Interlock Switches with Solenoid
HS1T 2-Contact/4-Contact

Slim interlock switcheswith 5000N locking force
Supporting safety for advancing technology

Interlock switches with 5000N locking force
Locking force of more than 5000N (40mm-wide slim model)
Greatly downsized from IDEC’s HS1L interlock switches.

Downsized

129

143

Volume70% less

Approx.

88

40

63

40
All dimensions in mm.

Conventional (HS1L): Volume 715 cm3Locking force 3000N

HS1T: Volume 229 cm3
Locking force 5000N

The head can be rotated to allow the actuator entry direction to be changed easily• Head rotating structure. Can be roated without removing the head.
• Prevents invalid operation. (On usual interlock switches, the NC contact closes when the head is removed)
HS1T
1

2

Change orientation of
the head in 3 easy steps

3

Align

➀ Turn the flathead screwdriver in➁ Rotate the head to the desired

the direction shown above until
the head stopper screw stops
and is lifted up.

➂ Align the  marks indicated on

position.

the head and body and tighten
the head stopper screw.

Many screws ...

Conventional IDEC interlock switches (HS5L)
1
1

2

2

3

4

➂ Attach to the desired position.

➃ Tighten the four screws.

43➀ Loosen the four screws usinga cross point screwdriver.

2➁ Remove the head.

Lock status can be identified from the front – Rear unlock mechanical indicator
Mechanical indicator function allows the lock status to be easily identified from the front while the rear unlock mechanical indicator ispressed.
Note: Interlock switches with rear unlock mechanical indicator function only.

Before unlock

Conventional (HS5L)

After unlock
Rear unlocking
button is pressed

Button is pressed

If HS1T
is usedMechanicalindicator

In conventional models, because the lockstatus cannot be identified from the front,
the system cannot be restarted when thesafety circuit is on. Therefore, it is necessary
to find out which safety circuit is on.

The lock status can be easily identified from the front even when thelock is released.

Angle adjustable actuator (vertical/horizontal)

Energy efficient 200mA solenoid consumption

New angle adjustable actuators available with retention force of5000N.
Strength enforced with a metal cover.
Rear and side mount possible.

Because the solenoid current for locking operation is 200mA,
the solenoid can be activated without using a relay.
Controllersolenoid can be
activated directly

Metal cover

HS1T

Rear mountcontact surface

New angle adjustable actuator

Side mountcontact surface

Rear & side mount(vertical/horizontal)

Right angle Straight actuator

Rear unlocking button
Door lock can be unlocked inside thebarrier by a worker left inside a hazardous
area.

Rear unlocking
buttonSpring clamp terminals
Spring clamp terminals offer excellent
vibration resistance, preventing wires
from loosening. No need for additionaltightening.

Side-conduit model
Cables can be connected to the right, left,or bottom (for straight cable orientation) of
the terminal cover. Long marking tubes canbe used on the wiring cables.

Driver port
Wiring port
Left cableorientation

Right cableorientation

Driver port
Wiring port

Straight cableorientation

3

HS1T Interlock Switches with Solenoid
Ideal for use on large doors and large equipment requiring strong locking force• 5000N locking force.
• Rear unlock mechanical indicator allows the lock status to be
identified from the front and back.
• Head rotating function enables the actuator entry direction to bechanged easily.
• Side-conduit model available.
• Two- and four-contact models available.
• Spring clamp terminal prevents loosening of wires.
• Energy efficient 200mA solenoid consumption.
• Solenoid lock and spring lock models available.
• Mechanical durability: 2,000,000 operations

Specifications

Operating Temperature–25 to + 55°C (no freezing)

Relative Humidity

20 to 95% (no condensation)

Applicable Standards

Storage Temperature–40 to +80°C (no freezing)

Pollution Degree
Impulse Withstand
VoltageInsulation Resistance(500V DC megger)
Electric Shock Protection
Degree of Protection

3 (contacts: 2)
2.5kV (between LED, solenoid and grounding: 0.5kV)

Between live and dead metal parts: 100MΩ min.
Between terminals of different poles: 100MΩ min.
Class II (IEC61140)
IP67 (IEC60529) Type 4X Indoor Use Only
Operating extremes: 100m/s2 (10G),
Shock Resistance
Damage limits: 1000m/s2 (100G)
Operating extremes: 10 to 55Hz, amplitude 0.35 min.
Vibration Resistance
Damage limits: 30Hz, amplitude 1.5mm min.
Actuator Operating Speed 0.05 to 1.0m/s
Direct Opening Travel
12mm min.
Direct Opening Force
120N
Actuator Retention ForceFzh = 5,000N min. (GS-ET-19) (*3)(*1)
Operating Frequency
900 operations per hour
Rear Unlock Button
3,000 times min. (HS1T-L)
Mechanical Durability
Mechanical Durability

2,000,000 times min.

Electrical Durability

100,000 times min. (AC-15 0.75A/250V)
2,000,000 times min. (24V AC/DC, 100mA)(Operating Frequency: 900 operations per hour)

Conditional Short-circuit
Current

50A (250V) (*2)

Cable
Weight (approx.)

0.3mm2 min. and 1.5mm2 max. or AWG22 min. to
AWG16 max. stranded wire or solid wire
450g*1) See page 17 regarding actuator retention force.
*2) Use 250V/10A fast-blow fuse for short-circuit protection.
*3) The actuator retention force of HS1T is 5000N at static load.
Make sure that a force exceeding the above specification is not applied.
In the event where the actuator retention force might exceed the expected load,
add a system that can detect the opening of the door and stops the machine, suchas adding another safety switch without lock (such as HS5D) or a sensor.

4

Additional Marking to indicate Lock Monitoring
This new international marking for lock monitoring is described in clause
9.2.1 of ISO14119 and is used to satisfy the requirements shown below.
5.7.1 General requirements
5.7.2.2 Locking monitoring
The lock monitor circuit (contacts) with this marking can monitor both thestatus of protective doors and locking function. (locking monitor contact[circuits] opens when the protective door is closed and locked)
Both HS1T spring lock and solenoid lock models have marking for lockmonitoring. Note that solenoid lock models can be used in applications where
lock for safety purpose is found unnecessary after a risk assessment, e.g.
locking is needed for purposes such as in production process.

Ratings

Contact Ratings
Rated Insulation Voltage (Ui)250V (between LED, solenoid and grounding: 30V)
Rated Current (Ith)
2.5A
Rated Voltage (Ue)
30V
125V
250V
Resistive Load (AC-12)
—
2.5A
1.5A
AC
Inductive Load (AC-15)
—
1.5A
0.75A
Resistive Load (DC-12)
2.0A
0.4A
0.2A
DC
Inductive Load (DC-13)
1.0A
0.22A
0.1A

Rated
Current (Ie)*Type and Coded level

EN ISO / ISO14119, IEC60947-5-1 (pending),
EN60947-5-1 (TÜV approval), GS-ET-19 (TÜV approval),
UL508 (UL Listing approval),
CSA C22.2 No.14 (c-UL Listing approval),
GB/T 14048. 5 (CCC)
IEC60204-1/EN60204-1
Type 2 low level coded interlocking device (ISO14119)• Minimum applicable load (reference): 3V AC/DC, 5mA(Applicable range may vary with operating conditions and load types.)* UL, c-UL rating: Pilot Duty AC 0.75A/250V, Pilot Duty DC 1.0A/30V
TÜV rating: AC-15 0.75A/250V, DC-13 1.0A/30V
CCC rating: AC-15 0.75A/250V, DC-13 1.0A/30V

Solenoid
Locking Mechanism
Rated Voltage
Rated Current
Coil Resistance
Pickup Voltage
Dropout Voltage
Maximum Continuous Applicable Voltage
Maximum Continuous Applicable Time
Insulation Class

Spring Lock
Solenoid Lock
100% duty cycle at 24V DC
200mA (initial value)120Ω (at 20°C)
Rated voltage × 85% max. (at 20°C)
Rated voltage × 10% min. (at 20°C)
Rated voltage × 110%
Continuous
Class F

Indicator
Rated Voltage
Rated Current
Light Source
Illumination Color

24V DC 100% duty cycle
10mA
LED
G (Green)HS1T Interlock Switches with Solenoid
4-Contact (Spring Lock/Solenoid Lock)

Door Monitor
Monitor
Door
Monitor
Door

Door
Monitor(Actuator
inserted)
Door(Actuator
inserted)(Actuator
inserted)
Door Monitor
Monitor(Actuator(Actuator inserted)
inserted)(Actuator
inserted)

Door Monitor:
Monitor: 1NC,1NO
Door
1NC,1NO
Door
Monitor:
1NC,1NO
Door
Monitor:
1NC,1NO
Door Monitor
Monitor:
1NC,1NO11
Circuit:11
Monitor Circuit:
Circuit:
MonitorMonitor Circuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorMonitor Circuit:
Circuit:
Monitor Circuit:

VB

VC

VD

11
11
11
23
11
23
23
23
23

Door
Monitor:
1NC,1NO
Door
Monitor:
1NC,1NO
Door
Monitor:
1NC,1NO
Door
Monitor:
1NC,1NO
Door Monitor
Monitor:
1NC,1NO11
Circuit:11
Monitor Circuit:
MonitorMonitor Circuit:
Circuit:
MonitorMonitor Circuit:
Circuit:
Monitor Circuit:
Circuit:
MonitorMonitor Circuit:
MonitorMonitor Circuit:
Circuit:
Monitor Circuit:
Door Monitor: 2NC

11
11
11
23
11
23
23
23
23
23

Monitor Circuit:
Circuit:
MonitorMonitorCircuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:

11
11
11
11
11
21
11
21
21
21
21

12
12
12
12
12
22
12
22
22
22
22

Monitor Circuit:
Circuit:
MonitorMonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:

11
11
11
11
21
21
21
21

Door Monitor: 2NC
Door
Monitor:
2NC
Door
Monitor:
2NC
Door Monitor
Monitor:
2NC
Circuit:

Door
Monitor:
2NC
Door
Monitor:
2NC
Door
Monitor:
2NC
Door
Monitor:
2NC
Door Monitor
Monitor:
2NC
Circuit:

12
12
12
12
22
22
22
22
32
32
32
32
32

Monitor Circuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:

11
11
21
11
21
21
21
21
33
21
33
33
33

12
12
12
22
12
22
22
22
22
34
22
34
34
34

MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:

11
11
11
11
11

12
12
12
12
12

MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:

11
11
11
11
11
11

12
12
12
12
12
12

Monitor Circuit:
Circuit:
MonitorMonitorCircuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
Monitor Circuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:

13
13
13
13
13
13

14
14
14
14
14
14

Monitor Circuit:
Circuit:
MonitorMonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:

13
13
13
13
13
13

14
14
14
14
14
14

Door Monitor:
Monitor: 1NC
1NC
Door
Door
Monitor:
1NC
Door
Monitor:
1NC
Door Monitor
Monitor:
1NC
Circuit:
Monitor Circuit:
VH

Door Monitor:
Monitor: 1NC
1NC
Door
Door
Monitor:
1NC
Door
Monitor:
1NC
Door Monitor
Monitor:
1NC
Circuit:
Monitor Circuit:
VJ

Door
Monitor:
1NO
Door
Monitor:
1NO
Door
Monitor:
1NO
Door
Monitor:
1NO
Door Monitor
Monitor:
1NO
Circuit:
VW

Door
Monitor:
1NO
Door
Monitor:
1NO
1NO
Door
Monitor:
Door
Monitor:
1NO
Door Monitor
Monitor:
1NO
Circuit:
VX

12
12
12
12
22
22
22
22

11
11
MonitorCircuit:11
MonitorCircuit:11
MonitorCircuit:
21
21
MonitorCircuit:
MonitorCircuit:21
MonitorCircuit:21
Monitor Circuit:
Circuit:
31
Monitor
31
MonitorCircuit:
31
MonitorCircuit:
31
MonitorCircuit:
MonitorCircuit:
Door Monitor: 2NC,1NO31

Door
Monitor:
2NC,1NO
Door
Monitor:
2NC,1NO
Door
Monitor:
2NC,1NO
Door Monitor
Monitor:
11
Circuit:
VG

12
12
12
12
12
24
12
24
24
24
24

12
12
12
12
12
24
12
24
24
24
24
24

Door Monitor:
Monitor: 3NC
3NC
Door
Door
Monitor:
3NC
Door
Monitor:
3NC
Door Monitor
Monitor:
3NC
Circuit:
Monitor Circuit:
VF

Gland
Port Size

Contact Configuration

Circuit Code

VA

Package Quantity: 1
Spring lockSolenoidPart No.

Lock Monitor
Monitor
Lock

MonitorSpringLock
lock→SolenoidOFF
Springlock→Solenoid
OFF
Lock
MonitorSpringlock→Solenoid
Lock
Monitor OFF
Springlock→Solenoid
Solenoid
lock→Solenoid
ON
Solenoid
lock→SolenoidOFF
ON
Springlock→Solenoid
OFF
Solenoid
lock→SolenoidON
Springlock→Solenoid
OFF
Solenoid
lock→Solenoid
ON
Solenoid lock→Solenoid
lock→Solenoid
ON
(+)
(–)
Solenoid
ON
(+)
(–)

(+)
(+)
(+)
A2
(+)
A2
A2
A2
A2

(–)
(–)
A1
(–)
A1
A1
A1
A1

Lock
Lock Monitor
Monitor Circuit:
Circuit: 1NC,1NO
1NC,1NO
Lock
MonitorCircuit:
1NC,1NO
Lock
MonitorCircuit:Lock
Circuit: 1NC,1NO
1NC,1NO
41
42(Note)
41 Monitor
42
41
41
41
41
53
53
53
53
53

42
42
42
42
54
54
54
54
54

(Note)(Note)(Note)(Note)(Note)

41
41
41
41
51
51
51
51
51
51

42
42
42
42
52
52
52
52
52
52

(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)

41
41
41
41
53
53
53
53
53
53

42
42
42
42
54
54
54
54
54
54

(Note)(Note)(Note)(Note)

41
41
41
51
51
51
51
51
51

42
42
42
52
52
52
52
52
52

(Note)(Note)(Note)(Note)(Note)

41
41
41
41

42
42
42
42

(Note)(Note)(Note)(Note)

Lock
MonitorCircuit:
2NC
Lock
MonitorCircuit:
2NC
Lock
MonitorCircuit:
2NC
Lock
MonitorCircuit:
2NC
Lock
MonitorCircuit:2NC
42
41(Note)
41 42

Lock Monitor Circuit: 1NC,1NO
Lock
MonitorCircuit:
1NC,1NO
Lock
MonitorCircuit:Lock
Circuit: 1NC,1NO
1NC,1NO(Note)
41
42(Note)
41 Monitor
42

Lock Monitor
Monitor Circuit:
Circuit: 2NC
2NC
Lock
Lock
MonitorCircuit:
2NC
Lock
MonitorCircuit:
2NC
Lock
MonitorCircuit:2NC
41
42(Note)
41 42

M20

M20

M20

(Note)(Note)(Note)(Note)(Note)(Note)

M20

Lock Monitor
Monitor Circuit:
Circuit: 1NC
1NC
Lock
Lock Monitor
Monitor Circuit:
Circuit: 1NC
1NC
Lock
41 42
42
(Note)
41
42
42
42
42

(Note)(Note)(Note)(Note)

HS1T-VA7Y4ZM-G

HS1T-VA44ZSM-G

HS1T-VA7Y4ZSM-G(side-conduit model)(side-conduit model)

HS1T-VB44ZM-G

HS1T-VB7Y4ZM-G

HS1T-VC44ZM-G

HS1T-VC7Y4ZM-G

HS1T-VC44ZSM-G

HS1T-VC7Y4ZSM-G(side-conduit model)(side-conduit model)

HS1T-VD44ZM-G

HS1T-VD7Y4ZM-G

HS1T-VD44ZSM-G

HS1T-VD7Y4ZSM-G(side-conduit model)(side-conduit model)

HS1T-VF44ZM-G

HS1T-VF7Y4ZM-G

HS1T-VF44ZSM-G

HS1T-VF7Y4ZSM-G(side-conduit model)(side-conduit model)

HS1T-VG44ZM-G

HS1T-VG7Y4ZM-G

HS1T-VG44ZSM-G

HS1T-VG7Y4ZSM-G(side-conduit model)(side-conduit model)

M20

Lock Monitor
Monitor Circuit:
Circuit: 1NC
1NC
Lock
Lock
MonitorCircuit:
1NC
Lock
MonitorCircuit:Lock
Circuit: 1NC
1NC(Note)
41 Monitor
4241
42(Note)

41
41
41
41

HS1T-VA44ZM-G

M20

Lock Monitor
Monitor Circuit:
Circuit: 3NC
3NC
Lock
Lock
MonitorCircuit:
3NC
Lock
MonitorCircuit: 3NC
3NC
Lock
Circuit:
41 Monitor
42(Note)
41
42(Note)
41
41
41
51
41
51
51
51
51
61
51
61
61
61
61
61

42
42
42
52
42
52
52
52
52
62
52
62
62
62
62
62

(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)

M20

HS1T-VH44ZM-G

HS1T-VH7Y4ZM-G

41
41
41
51
41
51
51
51
51
63
51
63
63
63
63
63

42
42
42
52
42
52
52
52
52
64
52
64
64
64
64
64

(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)

M20

HS1T-VJ44ZM-G

HS1T-VJ7Y4ZM-G

M20

HS1T-VW44ZM-G

HS1T-VW7Y4ZM-G

M20

HS1T-VX44ZM-G

HS1T-VX7Y4ZM-G

Lock Monitor
Monitor Circuit:
Circuit: 2NC,
2NC, 1NO
1NO
Lock
Lock Monitor
Monitor Circuit:
Circuit: 2NC,
2NC, 1NO
Lock
Lock
Circuit: 2NC, 1NO
1NO
41 Monitor
42(Note)
41
42(Note)

Lock
MonitorCircuit:
3NC
Lock Monitor
Monitor Circuit:
Circuit: 3NC
3NC
Lock
Lock
MonitorCircuit:Lock
Circuit: 3NC
3NC
41 Monitor
42(Note)
41
41
41
41
51
41
51
51
51
61
51
61
61
61
61
61

42
42
42
42
52
42
52
52
52
62
52
62
62
62
62
62

(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)

41
41
41
41
51
41
51
51
51
51
63
51
63
63
63
63

42
42
42
42
52
42
52
52
52
52
64
52
64
64
64
64

(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)(Note)

Lock
MonitorCircuit:
2NC,
1NO
Lock Monitor
Monitor Circuit:
Circuit: 2NC,
2NC, 1NO
1NO
Lock
Lock
MonitorCircuit:
2NC,
1NO
Lock
Circuit:
2NC,
1NO
41 Monitor
42(Note)• The contact configuration shows the status when the actuator is inserted and the switch is locked.
• Actuators are not supplied with the interlock switch and must be ordered separately.
• For safety circuit input, connect to the monitor circuit with marking.
• For side-conduit model, contact IDEC for details. (Part No: HS1T-SM-G)• See page 9 to 12 for circuit diagrams and operating characteristics.
Note: Both spring lock and solenoid lock models have marking for lock monitoring. Note that solenoid lock models can be used in applications where lock for safety
purpose is found unnecessary after a risk assessment, e.g. locking is needed for purposes such as in production processes.

5HS1T Interlock Switches with Solenoid
2-Contact (Spring Lock/Solenoid Lock)
Contact ConfigurationLock Monitor

Circuit Code

Door Monitor(Actuator inserted)

Door Monitor
Monitor
Door

Door Monitor(Actuator
inserted)(Actuator
inserted)(Actuator inserted)

XD

Door Monitor: 1NC
Door Monitor:
Monitor: 1NC
1NC
Door
Door Monitor
Monitor:
1NC
Circuit:
Monitor Circuit:
MonitorMonitor Circuit:
Circuit:
MonitorMonitor Circuit:
Circuit:
Monitor Circuit:

11

12

11
11
11

12
12
12

Door Monitor

Door Monitor: 2NC (Actuator inserted)
Door Monitor:
Monitor: 2NC
Door
2NC
Door Monitor
Monitor:2NC 11 12
Circuit:
XF

Monitor Circuit:
MonitorMonitor Circuit:
Circuit:
MonitorMonitor Circuit:
Circuit:Circuit:
DoorMonitor
Monitor:
1NC

21
11
11
11
21
21
21

Door Monitor: 1NC, 1NO
11
Monitor Circuit:
Door
Monitor:
1NC, 1NO
1NO
Door Monitor
Monitor:
1NC,
Circuit:
Door Monitor
Monitor:
1NC, 1NO
11
Circuit:
XG

22
12
12
12
22
22
22

12

Monitor Circuit:
Monitor Circuit:
Circuit:
MonitorMonitorMonitor Circuit:
Circuit:Circuit:
DoorMonitor
Monitor:
2NC

23
11
11
11
23
23
23

12
24
12
12
12
24
24
24

Monitor Circuit:
Monitor Circuit:

11
21

12
22

Door Monitor: 1NC, 1NO
XH

Package Quantity: 1

Monitor Circuit:
Monitor Circuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorMonitor Circuit:
Circuit:
Monitor Circuit:

11
23

12
24

Spring lockSolenoid OFF
Lock
Monitor
Lock
Monitor ON
Solenoid
lockSolenoid
Monitor OFF
Springlock→Solenoid
SpringLock
lock→Solenoid
OFF
(+)
(–)
Spring lock→Solenoid
Solenoid
lock→SolenoidOFF
ON
Solenoid
lock→Solenoid
ON
Solenoid
lock→Solenoid
ON
A2
A1

(+)
(+)
(+)
A2
A2
A2

Spring lockSolenoidPart No.

(–)
(–)
(–)
A1
A1
A1

Lock Monitor Circuit: 1NC
Lock Monitor
Monitor Circuit:
Circuit: 1NC
1NC
Lock
Lock Monitor Circuit: 1NC
41

Gland
Port Size

42

M20

HS1T-XD44ZM-G

HS1T-XD7Y4ZM-G(Note)

41(Note)
41 42
42(Note)
41 Lock
42 Monitor(Note)

Spring lockSolenoid OFF
Solenoid lockSolenoid ON

(+)
A2

(–)
A1

M20

HS1T-XF7Y4ZM-G

M20

HS1T-XG7Y4ZM-G

Lock Monitor Circuit: 1NC
41

42(Note)

HS1T-XH44ZM-G

Lock Monitor Circuit: 2NC
Lock
Lock Monitor
Monitor Circuit:
Circuit: 2NC
2NC
Lock Monitor Circuit: 2NC
41

42(Note)

41
41
51
41
51
51
51

42
42
52
42
52
52
52

(Note)(Note)(Note)(Note)(Note)(Note)

HS1T-XH44ZSM-G

HS1T-XH7Y4ZM-G(side-conduit model)

M20

HS1T-XH44ZLM-G(rear unlock button model)

HS1T-XH44ZLSM-G(rear unlock button model,
side-conduit model)

HS1T-XH7Y4ZSM-G(side-conduit model)

Lock Monitor Circuit: 1NC, 1NO
XJ

Monitor Circuit:
Monitor Circuit:

M20
41

42

53

54

HS1T-XJ44ZM-G

HS1T-XJ7Y4ZM-G(Note)• The contact configuration shows the status when the actuator is inserted and the switch is locked.
• Actuators are not supplied with the interlock switch and must be ordered separately.
• For safety circuit input, connect to the monitor circuit with marking.
• For side-conduit model, contact IDEC for details. (Part No: HS1T-SM-G)• See page 13 to 14 for circuit diagrams and operating characteristics.
Note: Both spring lock and solenoid lock models have marking for lock monitoring. Note that solenoid lock models can be used in applications where lock for safety
purpose is found unnecessary after a risk assessment, e.g. locking is needed for purposes such as in production processes.

6HS1T Interlock Switches with Solenoid
4-Contact/Rear Unlock Button (Spring Lock)
Circuit CodePackage Quantity: 1

Door Monitor
Door Monitor

Door Monitor(Actuator
inserted)
Door Monitor(Actuator
inserted)(Actuator
inserted)
Door Monitor(Actuator
inserted)(Actuator inserted)

VA

Door Monitor:
Monitor: 1NC,1NO
Door
Door Monitor: 1NC,1NO
1NC,1NO
Door Monitor
Monitor:
1NC,1NO11
Circuit:
Door Monitor
Monitor:
1NC,1NO11
MonitorCircuit:11
Circuit:
Monitor Circuit:
Circuit:
MonitorMonitorCircuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorMonitor Circuit:
Circuit:
Monitor Circuit:

23
11
23
23
11
23
23

VB

Door
Door Monitor:
Monitor: 1NC,1NO
1NC,1NO
Door
Monitor:
1NC,1NO
Door Monitor
Monitor:
1NC,1NO
Circuit:
11
Door Monitor
Monitor:
1NC,1NO
Monitor Circuit:
Circuit:11

VC

Door Monitor:
Monitor: 2NC
Door
Door Monitor: 2NC
2NC
Door Monitor
Monitor:
2NC
Circuit:
Door Monitor
Monitor:
2NC
MonitorCircuit:Circuit:

VD

Door
2NC
Door Monitor:
Monitor: 2NC
2NC
Door
Monitor:
Door Monitor
Monitor:
2NC
Circuit:
Door Monitor
Monitor:
2NC
Monitor Circuit:
Circuit:

VF

Monitor Circuit:
Circuit:
MonitorMonitorCircuit:
MonitorCircuit:
Monitor Circuit:
Circuit:
MonitorMonitorCircuit:
Monitor Circuit:
Monitor Circuit:
MonitorCircuit:
Monitor Circuit:
Circuit:
MonitorMonitor Circuit:
Circuit:
MonitorMonitor Circuit:
Circuit:
MonitorMonitor Circuit:
Monitor Circuit:

MonitorCircuit:
MonitorCircuit:
MonitorCircuit:
Monitor Circuit:
Circuit:
MonitorMonitorCircuit:
MonitorMonitor Circuit:
Circuit:
Monitor Circuit:

Door
Door Monitor:
Monitor: 3NC
3NC
Door
Monitor:
3NC
3NC
Door Monitor
Monitor:Circuit:
Door Monitor
Monitor:
3NC
Monitor Circuit:
Circuit:
Monitor Circuit:
Circuit:
MonitorMonitor Circuit:
Circuit:
MonitorMonitorCircuit:
Monitor Circuit:
Circuit:
MonitorMonitor Circuit:
Monitor Circuit:

Door
Door Monitor:
Monitor: 1NC
1NC
Door
Monitor:
1NC
Door Monitor
Monitor:
1NC
Circuit:
1NC
Door Monitor
Monitor:Circuit:
Monitor Circuit:
VJ

Gland
Port Size

Contact Configuration

MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
MonitorCircuit:
Monitor Circuit:
MonitorCircuit:
MonitorMonitor Circuit:
Circuit:
Monitor Circuit:

Lock Monitor
Lock Monitor

Lock Monitor(Solenoid
OFF)
Lock Monitor(Solenoid
OFF)(Solenoid
OFF)
Lock Monitor(Solenoid
OFF)
(+)
(–)
(+)
(–)
(Solenoid OFF)
(+)
(–)

A2
(+)
A2
(+)
A2
A2
A2

11
23
11
23
23
11
23
23
11
11
11
21
11
21
21
11
21
21

12
12
12
22
12
22
22
12
22
22

11
11
11
21
11
21
21
11
21
21

12
12
12
22
12
22
22
12
22
22

11
11
11
21
11
21
21
31
11
21
31
31
21
31
31

12
12
12
22
12
22
22
32
12
22
32
32
22
32
32

11
11
11
11
11

12
12
12
12
12

A1
(–)
A1
(–)
A1
A1
A1

M20

HS1T-VA44ZLM-G

Lock
Lock Monitor
Monitor Circuit:
Circuit: 2NC
2NC
Lock
MonitorCircuit:
2NC
Lock Monitor Circuit: 2NC
42
41 Monitor(Note)
Lock
Circuit:2NC
41 42(Note)

M20

HS1T-VB44ZLM-G

Lock Monitor
Monitor Circuit: 1NC,1NO
Lock
1NC,1NO
Lock Monitor Circuit:
Circuit: 1NC,1NO
Lock
Circuit: 1NC,1NO(Note)
41 Monitor
42
Lock
MonitorCircuit:
1NC,1NO(Note)
41 42
42(Note)
41

M20

HS1T-VC44ZLM-G

Lock
MonitorCircuit:
2NC
Lock Monitor
Monitor Circuit:
Circuit: 2NC
2NC
Lock
Lock
Circuit: 2NC
41 Monitor
42(Note)
Lock
MonitorCircuit:
41 42
42(Note) 2NC
41(Note)

Lock Monitor
Monitor Circuit: 1NC,1NO
1NC,1NO
Lock
Lock Monitor Circuit:
Circuit: 1NC,1NO
Lock
Circuit: 1NC,1NO
41 Monitor
42(Note)
Lock
MonitorCircuit:
41
42(Note) 1NC,1NO
41 42(Note)

12
12
12
24
12
24
24
12
24
24

12
12
12
24
12
24
24
12
24
24

Spring lockPart No.

41
53
41
53
53
53
53

42
54
42
54
54
54
54

(Note)(Note)

41
41
51
41
51
51
51
51

42
42
52
42
52
52
52
52

(Note)(Note)(Note)(Note)(Note)(Note)(Note)

41
53
41
53
53
53
53

42
54
42
54
54
54
54

(Note)(Note)

41
51
41
51
51
51
51

42
52
42
52
52
52
52

(Note)(Note)(Note)(Note)(Note)(Note)

M20

41
41

42
42

(Note)(Note)

M20

Lock
Lock Monitor
Monitor Circuit:
Circuit: 1NC
1NC
Lock
MonitorCircuit:
1NC
Lock
MonitorCircuit:
1NC(Note)
41 Monitor
42
Lock
Circuit:
1NC(Note)
41
42(Note)
41 42

HS1T-VD44ZLM-G(side-conduit model)

HS1T-VF44ZLM-G

42
52
52
42
52
64
52
64
52
64
64
64

(Note)(Note)(Note)(Note)(Note)

HS1T-VF44ZLSM-G(side-conduit model)

Lock
Lock Monitor
Monitor Circuit:
Circuit: 2NC,1NO
2NC,1NO
Lock
MonitorCircuit:
2NC,1NO
Lock
MonitorCircuit: 2NC,1NO
41
42(Note)
Lock
MonitorCircuit:
41
42(Note)
41 42(Note) 2NC,1NO
41
51
51
41
51
63
51
63
51
63
63
63

HS1T-VD44ZLSM-G

M20

HS1T-VJ44ZLM-G• See page 8 to 9 for circuit diagrams and operating characteristics.

4-Contact/Dual Safety Circuit (Spring Lock)

Package Quantity: 1
Gland
Port Size

Contact Configuration

Circuit CodeMain Circuit: 1NC+1NC, 1NC+1NC

Door Monitor(Actuator inserted)

Lock Monitor(Solenoid OFF)

(+)
A2

DD
Monitor Circuit:
Monitor Circuit:

11
21

12
22

Spring lockPart No.

41
51

HS1T-DD44ZM-G

(–)
A1
42
52

M20
HS1T-DD44ZSM-G(Note)(Note)(side-conduit model)• See page 12 for circuit diagrams and operating characteristics.

4-Contact/Dual Safety Circuit/Rear Unlock Button (Spring Lock)

Package Quantity: 1
Gland
Port Size

Contact Configuration

Circuit CodeMain Circuit: 1NC+1NC, 1NC+1NC

Door Monitor(Actuator inserted)

Lock Monitor(Solenoid OFF)

(+)
A2

DD
Monitor Circuit:
Monitor Circuit:

11
21

12
22

Spring lockPart No.

41
51

HS1T-DD44ZLM-G

(–)
A1
42
52

M20
(Note)(Note)

HS1T-DD44ZLSM-G(side-conduit model)• See page 12 for circuit diagrams and operating characteristics.
• The contact configuration shows the status when the actuator is inserted and the switch is locked.
• Actuators are not supplied with the interlock switch and must be ordered separately.

7

HS1T Interlock Switches with Solenoid
Circuit Diagrams and Operating Characteristics
4-Contact/Rear Unlock Button (Spring Lock)
Interlock Switch Status

When unlocking manually

Status 1

Status 2

Status 3

Status 4

Door closed
Machine ready to operate
Solenoid de-energized

Door closed
Machine cannot be operated
Solenoid energized

Door open
Machine cannot be operated
Solenoid energized

Door open
Machine cannot be operated
Solenoid de-energized

Door closed
Machine cannot be operated
Solenoid de-energized
Press

Door Status•Turn the•Press the rearmanualunlockingunlock key (*1) button (*2)

(−)
A1

(+)
A2

Circuit Example: HS1T-VA4

Door
HS1T-VA4
Door Monitor(Actuator inserted)

Monitor Circuit: 11 12
Monitor Circuit: 23 24
Monitor Circuit:

HS1T-VB4
Monitor Circuit: 11 12
Monitor Circuit: 23 24
Monitor Circuit:

HS1T-VC4Part No. and Circuit Diagram

Monitor Circuit: 11 12
Monitor Circuit: 21 22
Monitor Circuit:

HS1T-VD4
Monitor Circuit: 11 12
Monitor Circuit: 21 22
Monitor Circuit:

HS1T-VF4
Monitor Circuit: 11 12
Monitor Circuit: 21 22
Monitor Circuit: 31 32

HS1T-VG4
Monitor Circuit: 11 12
Monitor Circuit: 21 22
Monitor Circuit: 33 34

HS1T-VH4
Monitor Circuit: 11 12
Monitor Circuit:
Monitor Circuit:

(+)
A2

(−)
A1

(+)
A2

(−)
A1

(+)
A2

(+)
A2

(−)
A1

(−)
A1

11

12

41

42

11

12

41

42

11

12 41

42

11

12

41

42

11

12

41

42

23

24

53

54

23

24

53

54

23

24 53

54

23

24

53

54

23

24

53

54

Closed (locked)

Closed (unlocked)

Open

Open

Closed (unlocked)

OFF (de-energized)

ON (energized)

ON (energized)

OFF (de-energized)

OFF (de-energized)

Monitor Circuit(door closed)
11−12Lock Monitor
Circuit(Solenoid OFF) Monitor(door open)
(+)
(–)
23−24
A2
A1
Monitor Circuit(locked)
41−42
41 42
Monitor Circuit(unlocked)
53 54
53−54
Monitor Circuit(door closed)
11−12Monitor Circuit(door open)
23−24
41 42
Monitor Circuit(locked)
41−42
51 52
Monitor Circuit(locked)
51−52
Monitor Circuit(door closed)
11−12Monitor Circuit(door closed)
21−22
41 42
Monitor Circuit(locked)
41−42
53 54
Monitor Circuit(unlocked)
53−54
Monitor Circuit(door closed)
11−12Monitor Circuit(door closed)
21−22
41 42
Monitor Circuit(locked)
41−42
51 52
Monitor Circuit(locked)
51−52
Monitor Circuit(door closed)
11−12Monitor Circuit(door closed)
21-22
41 42
Monitor Circuit(door closed)
31-32
Monitor Circuit(locked)
41-42
Monitor Circuit(door closed)
11−12Monitor Circuit(door closed)
21-22
41 42
Monitor Circuit(door open)
33-34
Monitor Circuit(door locked)
41-42
Monitor Circuit(door closed)
11-12
Monitor Circuit(locked)
41-42
41 42
Monitor Circuit(locked)
51 52
51-52
61 62
Monitor Circuit(locked)
61-62

Solenoid Power A1-A2 (all models)• The contact configuration shows the status when the actuator is inserted and the switch is locked.
• Monitor Circuit: Sends monitoring signals of protective door open/closed status (door monitor) or protective door lock/unlock status (lock monitor).
*1) Actuator can be unlocked manually for confirming the door movement before wiring and energizing, and also for emergency situation such as power failure.
*2) When an operator is confined within a dangerous zone, the actuator can be unlocked manually by pressing the rear unlock button (rear unlock button model).

8

HS1T Interlock Switches with Solenoid
Circuit Diagrams and Operating Characteristics
4-Contact/Rear Unlock Button (Spring Lock)
Interlock Switch Status

When unlocking manually

Status 1

Status 2

Status 3

Status 4

Door Closed
Machine ready to operate
Solenoid de-energized

Door Closed
Machine cannot be operated
Solenoid energized

Door open
Machine cannot be operated
Solenoid energized

Door open
Machine cannot be operated
Solenoid de-energized

Door Closed
Machine cannot be operated
Solenoid de-energized
Press

Door Status•Turn the•Press the rearmanualunlockingunlock key (*1) button (*2)

(−)
A1

(+)
A2

Circuit Example: HS1T-VA4

Door
HS1T-VJ4
Door Monitor

Part No. and Circuit Diagram(Actuator inserted)

Monitor Circuit: 11 12
Monitor Circuit:
Monitor Circuit:

HS1T-VW4
Monitor Circuit: 13 14
Monitor Circuit:
Monitor Circuit:

HS1T-VX4
Monitor Circuit: 13 14
Monitor Circuit:
Monitor Circuit:

(−)
A1

(+)
A2

(+)
A2

(−)
A1

11

12

41

42

11

12

41

42

11

12 41

42

23

24

53

54

23

24

53

54

23

24 53

54

(+)
A2
11
23

12
24

41
53

(+)
A2

(−)
A1

(−)
A1

42

11

12

41

42

54

23

24

53

54

Closed (locked)

Closed (unlocked)

Open

Open

Closed (unlocked)

OFF (de-energized)

ON (energized)

ON (energized)

OFF (de-energized)

OFF (de-energized)

Monitor Circuit(door closed)
11−12Lock Monitor(Solenoid OFF) Monitor Circuit(locked)
(+)
(–)
41−42
A2
A1
Monitor Circuit(locked)
41 42
51−52
51 52
Monitor Circuit(unlocked)
63 64
63−64
Monitor Circuit(door open)
13−14
Monitor Circuit(locked)
41−42
41 42
Monitor Circuit
51 52(locked)
61 62
51−52
Monitor Circuit(locked)
61−62
Monitor Circuit(door open)
13−14
Monitor Circuit(locked)
41 42
41−42
51 52
Monitor Circuit(locked)
63 64
51−52
Monitor Circuit(unlocked)
63−64

Solenoid Power A1-A2 (all models)• The contact configuration shows the status when the actuator is inserted and the switch is locked.
• Monitor Circuit: Sends monitoring signals of protective door open/closed status (door monitor) or protective door lock/unlock status (lock monitor).
*1) Actuator can be unlocked manually for confirming the door movement before wiring and energizing, and also for emergency situation such as power failure.
*2) When an operator is confined within a dangerous zone, the actuator can be unlocked manually by pressing the rear unlock button (rear unlock button model).

Operating Characteristics (Reference)
0 (Actuator Mounting Reference Position)
Approx. 4.2 (Locked position)
Approx. 9.8
Approx. 28.5 (mm)Approx. 10.3
: Contacts ON
Door Monitor Circuit (door open, NO)(closed)Door Monitor Circuit (door closed, NC)
Lock Monitor Circuit (unlocked, NO)
Lock Monitor Circuit (locked, NC): Contacts OFF(open)• The characteristics shown in the chart above are of the straight actuator (HS9Z-A11T) and right-angle actuator (HS9Z-A12T).
• The operation characteristics show the contact status when the actuator enters the entry slot of an interlock switch.

9

HS1T Interlock Switches with Solenoid
Circuit Diagrams and Operating Characteristics
4-Contact (Solenoid Lock)
Interlock Switch Status

Status 1

Status 2

Status 3

Status 4

Unlocking using Manual Unlock Key

Door closed
Machine ready to operate
Solenoid energized

Door closed
Machine cannot be operated
Solenoid de-energized

Door open
Machine cannot be operated
Solenoid de-energized

Door open
Machine cannot be operated
Solenoid energized

Door closed
Machine cannot be operated
Solenoid de-energized  energized

(+)
A2

(+)
A2

Door Status
When unlocking manually

Circuit Example: HS1T-VA7Y

Door
HS1T-VA7Y
Door Monitor(Actuator inserted)

Lock Monitor(Solenoid ON)(+)

A2
Monitor Circuit:
Monitor Circuit:
Monitor Circuit:

11 12
23 24

(–)

A1

41 42

(*3)

53 54

Part No. and Circuit Diagram

HS1T-VB7Y
Monitor Circuit:
Monitor Circuit:
Monitor Circuit:

11 12
23 24

41 42

(*3)

51 52

(*3)

41 42

(*3)

HS1T-VC7Y
Monitor Circuit:
Monitor Circuit:
Monitor Circuit:

11 12
21 22

53 54

HS1T-VD7Y
Monitor Circuit:
Monitor Circuit:
Monitor Circuit:

11 12
21 22

41 42

(*3)

51 52

(*3)

(−)
A1

(−)
A1

(+)
A2

(−)
A1

(+)
A2

(+)
A2

(−)
A1

(−)
A1

11

12

41

42

11

12

41

42

11

12

41

42

11

12

41

42

11

12

41

42

23

24

53

54

23

24

53

54

23

24

53

54

23

24

53

54

23

24

53

54

Closed (locked)

Closed (unlocked)

Open

Open

Closed (unlocked)

ON (energized)

OFF (de-energized)

OFF (de-energized)

ON (energized) (*2)

OFF (de-energized)
 ON (energized) (*1) (*2)

Monitor Circuit(door closed)
11−12Monitor Circuit(door open)
23−24
Monitor Circuit(locked)
41−42
Monitor Circuit(unlocked)
53−54
Monitor Circuit(door closed)
11−12Monitor Circuit(door open)
23−24
Monitor Circuit(locked)
41−42
Monitor Circuit(locked)
51−52
Monitor Circuit(door closed)
11−12Monitor Circuit(door closed)
21−22Monitor Circuit(locked)
41−42
Monitor Circuit(unlocked)
53−54
Monitor Circuit(door closed)
11−12Monitor Circuit(door closed)
21−22Monitor Circuit(locked)
41−42
Monitor Circuit(locked)
51−52

Solenoid Power A1-A2 (all models)• The contact configuration shows the status when the actuator is inserted and the switch is locked.
• Monitor Circuit: Sends monitoring signals of protective door open/closed status (door monitor) or protective door lock/unlock status (lock monitor).
*1) Do not attempt manual unlocking when the solenoid is energized.
*2) Do not energize the solenoid for a long time while the door is open or when the door is unlocked manually.
*3) Both spring lock and solenoid lock models have marking for lock monitoring. Note that solenoid lock models can be used in applications where lock for safety
purpose is found unnecessary after a risk assessment, e.g. locking is needed for purposes such as in production processes.

Operating Characteristics (Reference)
0 (Actuator Mounting Reference Position)
Approx. 4.2 (Locked position)
Approx. 9.8
Approx. 28.5 (mm)Approx. 10.3
: Contacts ON
Door Monitor Circuit (door open, NO)(closed)Door Monitor Circuit (door closed, NC)
Lock Monitor Circuit (unlocked, NO)
Lock Monitor Circuit (locked, NC): Contacts OFF(open)• The characteristics shown in the chart above are of the straight actuator (HS9Z-A11T) and right-angle actuator (HS9Z-A12T).
• The operation characteristics show the contact status when the actuator enters the entry slot of an interlock switch.

10

HS1T Interlock Switches with Solenoid
Circuit Diagrams and Operating Characteristics
4-Contact (Solenoid Lock)
Interlock Switch Status

Status 1

Status 2

Status 3

Status 4

Unlocking using Manual Unlock Key

Door closed
Machine ready to operate
Solenoid energized

Door closed
Machine cannot be operated
Solenoid de-energized

Door open
Machine cannot be operated
Solenoid de-energized

Door open
Machine cannot be operated
Solenoid energized

Door closed
Machine cannot be operated
Solenoid de-energized  energized

Door Status
When unlocking manually(+)
A2

Circuit Example: HS1T-VA7Y

Door
HS1T-VF7Y

Door Monitor(Actuator inserted)

Lock Monitor(Solenoid ON)(+)

A2
Monitor Circuit:
Monitor Circuit:
Monitor Circuit:

11 12
21 22
31 32

(–)

A1

41 42

(*3)

41 42
51 52
61 62

(*3)
(*3)
(*3)

41 42

(*3)

41 42
51 52
63 64

(*3)
(*3)

41 42
51 52
61 62

(*3)
(*3)
(*3)

41 42
51 52
63 64

(*3)
(*3)

HS1T-VH7Y
Monitor Circuit:
Monitor Circuit:
Monitor Circuit:

11 12

Part No. and Circuit Diagram

HS1T-VG7Y
Monitor Circuit:
Monitor Circuit:
Monitor Circuit:

11 12
21 22
33 34

HS1T-VJ7Y
Monitor Circuit:
Monitor Circuit:
Monitor Circuit:

11 12

HS1T-VW7Y
Monitor Circuit:
Monitor Circuit:
Monitor Circuit:

13 14

HS1T-VX7Y
Monitor Circuit:
Monitor Circuit:
Monitor Circuit:

13 14

Solenoid Power A1-A2 (all models)

(−)
A1

(+)
A2

(−)
A1

11

12

41

42

11

12

41

42

23

24

53

54

23

24

53

54

(+)
A2
11
23

12
24

41
53

(−)
A1

(+)
A2

(+)
A2

(−)
A1

(−)
A1

42

11

12

41

42

11

12

41

42

54

23

24

53

54

23

24

53

54

Closed (locked)

Closed (unlocked)

Open

Open

Closed (unlocked)

ON (energized)

OFF (de-energized)

OFF (de-energized)

ON (energized) (*2)

OFF (de-energized)
 ON (energized) (*1) (*2)

Monitor Circuit(door closed)
11−12Monitor Circuit(door closed)
21−22Monitor Circuit(door closed)
31−32
Monitor Circuit(locked)
41−42
Monitor Circuit(door closed)
11−12Monitor Circuit(locked)
41−42
Monitor Circuit(locked)
51−52
Monitor Circuit(locked)
61−62
Monitor Circuit(door closed)
11−12Monitor Circuit(door closed)
21−22Monitor Circuit(door open)
33-34
Monitor Circuit(locked)
41−42
Monitor Circuit(door closed)
11−12Monitor Circuit(locked)
41−42
Monitor Circuit(locked)
51−52
Monitor Circuit(unlocked)
63-64
Monitor Circuit(door open)
13-14
Monitor Circuit(locked)
41−42
Monitor Circuit(locked)
51−52
Monitor Circuit(locked)
61-62
Monitor Circuit(door open)
13-14
Monitor Circuit(locked)
41−42
Monitor Circuit(locked)
51−52
Monitor Circuit(unlocked)
63-64• The contact configuration shows the status when the actuator is inserted andthe switch is locked.
• Monitor Circuit: Sends monitoring signals of protective door open/closed status(door monitor) or protective door lock/unlock status (lock monitor).
*1) Do not attempt manual unlocking when the solenoid is energized.
*2) Do not energize the solenoid for a long time while the door is open or when
the door is unlocked manually.
*3) Both spring lock and solenoid lock models have marking for lock monitoring.
Note that solenoid lock models can be used in applications where lock forsafety purpose is found unnecessary after a risk assessment, e.g. locking isneeded for purposes such as in production processes.

Operating Characteristics (Reference)
0 (Actuator Mounting Reference Position)
Approx. 4.2 (Locked position)
Approx. 9.8
Approx. 28.5 (mm)Approx. 10.3
: Contacts ON
Door Monitor Circuit (door open, NO)(closed)Door Monitor Circuit (door closed, NC)
Lock Monitor Circuit (unlocked, NO)
Lock Monitor Circuit (locked, NC): Contacts OFF(open)• The characteristics shown in the chart above are of the straight actuator(HS9Z-A11T) and right-angle actuator (HS9Z-A12T).
• The operation characteristics show the contact status when the actuator
enters the entry slot of an interlock switch.

11

HS1T Interlock Switches with Solenoid
Circuit Diagrams and Operating Characteristics
4-Contact/Dual Safety Circuit, 4-Contact/Dual Safety Circuit/Rear Unlock Button (Spring Lock)
Interlock Switch Status

Status 1

Status 2

Status 3

Status 4

Door closed
Machine ready to operate
Solenoid de-energized

Door closed
Machine cannot be operated
Solenoid energized

Door open
Machine cannot be operated
Solenoid energized

Door open
Machine cannot be operated
Solenoid de-energized

Unlocking using Manual Unlock Key
Door closed
Machine cannot be operated
Solenoid de-energized
Press

Door Status•Turn the•Press the rearmanualunlockingunlock key (*1) button (*2)(+)
A2

Circuit Example: HS1T-DD4

DoorPart No. and Circuit Diagram

HS1T-DD44
Door Monitor(Actuator inserted)

Lock Monitor(Solenoid OFF)(+)

A2
Monitor Circuit: 11 12
Monitor Circuit: 21 22

(+)
A2

(+)
A2

(−)
A1

(+)
A2

(−)
A1

(−)
A1

(+)
A2

(−)
A1

11

12

41

42

11

12

41

42

11

12

41

42

11

12

41

42

11

12

41

42

21

22

51

52

21

22

51

52

21

22

51

52

21

22

51

52

21

22

51

52

Closed (locked)

Closed (unlocked)

Open

Open

Closed (unlocked)

OFF (de-energized)

ON (energized)

ON (energized)

OFF (de-energized)

OFF (de-energized)

Main Circuit
11−42

(–)

A1

41 42
51 52

HS1T-DD44L
Monitor Circuit: 11 12
Monitor Circuit: 21 22(−)
A1

Main Circuit
21−52
Main Circuit
11−42

41 42
51 52

Main Circuit
21−52

Solenoid Power A1-A2 (all model)• The contact configuration shows the status when the actuator is inserted and the switch is locked.
• Main Circuit: Connected to the control circuit of machine drive part, sending interlock signals of the protective door.
• For safety circuit input, connect to the monitor circuit.
*1) Actuator can be unlocked manually for confirming the door movement before wiring and energizing, and also for emergency situation such as power failure.
*2) When an operator is confined within a dangerous zone, the actuator can be unlocked manually by pressing the rear unlock button. (rear unlock button model)

Operating Characteristics (Reference)
0 (Actuator Mounting Reference Position)
Approx. 4.2 (Locked position)
Approx. 9.8
Approx. 28.5 (mm)Approx. 10.3
Main Circuit: Contacts ON (closed): Contacts OFF (open)• The characteristics shown in the chart above are of the straight actuator (HS9Z-A11T) and right-angle actuator (HS9Z-A12T).
• The operation characteristics show the contact status when the actuator enters the entry slot of an interlock switch.

12

HS1T Interlock Switches with Solenoid
Circuit Diagrams and Operating Characteristics
2-Contact (Spring Lock)
Interlock Switch Status

When unlocking manually

Status 1

Status 2

Status 3

Status 4

Door closed
Machine ready to operate
Solenoid de-energized

Door closed
Machine cannot be operated
Solenoid energized

Door open
Machine cannot be operated
Solenoid energized

Door open
Machine cannot be operated
Solenoid de-energized

Door closed
Machine cannot be operated
Solenoid de-energized
Press

Door Status•Turn the•Press the rearmanualunlockingunlock key (*1) button (*2)(+)
A2

Circuit Example: HS1T-XD4
11

Door
HS1T-XD4

Door Monitor(Actuator inserted)(+)

Part No. and Circuit Diagram

HS1T-XH4
Door Monitor(Actuator
MonitorCircuit: inserted)
Monitor Circuit:
Monitor Circuit: 11 12
Monitor Circuit:

42

11

12

41

(−)
A1
42

(+)
A2
11

12

41

(+)
A2

(−)
A1
42

11

12

41

(−)
A1
42

(+)
A2
11

12

41

(−)
A1
42

Closed (locked)

Closed (unlocked)

Open

Open

Closed (unlocked)

OFF (de-energized)

ON (energized)

ON (energized)

OFF (de-energized)

OFF (de-energized)

(–)

A1

41 42

Monitor Circuit(locked)
41-42
Monitor Circuit(locked)Lock Monitor
41-42(Solenoid
41 42 OFF)(+)51 52(–)
Monitor Circuit
A2
A1

41 42

HS1T-XJ4
Monitor Circuit:
Monitor Circuit:

41

(+)
A2

Monitor Circuit
Lock Monitor (door closed)(Solenoid OFF)
11-12

A2
Monitor Circuit: 11 12
Monitor Circuit:

12

(−)
A1

41 42
53 54

(locked)
51-52
Monitor Circuit(locked)
41-42
Monitor Circuit(locked)
53-54

Solenoid Power A1-A2 (all model)• The contact configuration shows the status when the actuator is inserted and the switch is locked.
• Monitor Circuit: Sends monitoring signals of protective door open/closed status (door monitor) or protective door lock/unlock status (lock monitor).
*1) Actuator can be unlocked manually for confirming the door movement before wiring and energizing, and also for emergency situation such as power failure.
*2) When an operator is confined within a dangerous zone, the actuator can be unlocked manually by pressing the rear unlock button. (rear unlock button model)

Operating Characteristics (Reference)
0 (Actuator Mounting Reference Position)
Approx. 4.2 (Locked position)
Approx. 9.8
Approx. 28.5 (mm)Approx. 10.3
: Contacts ON
Door Monitor Circuit (door open, NO)(closed)Door Monitor Circuit (door closed, NC)
Lock Monitor Circuit (unlocked, NO)
Lock Monitor Circuit (locked, NC): Contacts OFF(open)• The characteristics shown in the chart above are of the straight actuator (HS9Z-A11T) and right-angle actuator (HS9Z-A12T).
• The operation characteristics show the contact status when the actuator enters the entry slot of an interlock switch.

13

HS1T Interlock Switches with Solenoid
Circuit Diagrams and Operating Characteristics
2-Contact (Solenoid Lock)
Interlock Switch Status

Status 1

Status 2

Status 3

Status 4

Unlocking using Manual Unlock Key

Door closed
Machine ready to operate
Solenoid energized

Door closed
Machine cannot be operated
Solenoid de-energized

Door open
Machine cannot be operated
Solenoid de-energized

Door open
Machine cannot be operated
Solenoid energized

Door closed
Machine cannot be operated
Solenoid de-energized  energized

Door Status
When unlocking manually(+)
A2

Circuit Example: HS1T-XD7Y
11Door
HS1T-XD7Y

Door Monitor(Actuator inserted)

Lock Monitor(Solenoid ON)(+)

A2
Monitor Circuit:
Monitor Circuit:

11 12

HS1T-XF7Y (*3)
Door Monitor(Actuator
MonitorCircuit: inserted)
11 12Part No. and Circuit Diagram

Monitor Circuit:
Monitor Circuit:
Monitor Circuit:

41 42

(*4)

Lock Monitor(Solenoid ON)

21 22 (+)
A2
11 12

(–)

A1

(–)

A1

41 42

11 12
21 22
23
24

11 12
23 24

11

12

41

42

(+)
A2
11

12

41

(+)
A2

(−)
A1
42

11

12

41

(+)
A2

(−)
A1
42

11

12

41

(−)
A1
42

Closed (locked)

Closed (unlocked)

Open

Open

Closed (unlocked)

OFF (energized)

OFF (de-energized)

OFF (de-energized)

ON (energized) (*2)

OFF (de-energized)
 ON (energized) (*1) (*2)

Monitor Circuit(door closed)
11-12
Monitor Circuit(locked)
41-42
Monitor Circuit(door closed)
11-12

Monitor Circuit(door open)
23-24

41 42
51 52

HS1T-XJ7Y
Monitor Circuit:
Monitor Circuit:

42

(−)
A1

Monitor Circuit(door closed)
11-12

HS1T-XH7Y
Monitor Circuit:
Monitor Circuit:

41

(+)
A2

Monitor Circuit(door closed)
(*4)
21-22

HS1T-XG7Y (*3)
Monitor Circuit:
Monitor Circuit:

12

(−)
A1

41 42
53 54

Monitor Circuit(locked)
41-42
(*4)
(*4)

Monitor Circuit(locked)
51-52
Monitor Circuit(locked)
41-42(*4)
Monitor Circuit(locked)
53-54

Solenoid Power A1-A2 (all models)• The contact configuration shows the status when the actuator is inserted and the switch is locked.
• Monitor Circuit: Sends monitoring signals of protective door open/closed status (door monitor) or protective door lock/unlock status (lock monitor).
*1) Do not unlock manually while the solenoid is energized.
*2) Do not energize the solenoid for a long period of time while the door is open or while the door is unlocked manually.
*3) Circuit codes XF and XG do not have signals to notify whether the switch is locked or unlocked. A different method should be used to check the lock status.
*4) Both spring lock and solenoid lock models have marking for lock monitoring. Note that solenoid lock models can be used in applications where lock for safety
purpose is found unnecessary after a risk assessment, e.g. locking is needed for purposes such as in production processes.

Operating Characteristics (Reference)
0 (Actuator Mounting Reference Position)
Approx. 4.2 (Locked position)
Approx. 9.8
Approx. 28.5 (mm)Approx. 10.3
: Contacts ON
Door Monitor Circuit (door open, NO)(closed)Door Monitor Circuit (door closed, NC)
Lock Monitor Circuit (unlocked, NO)
Lock Monitor Circuit (locked, NC)

14: Contacts OFF(open)• The characteristics shown in the chart above are of the straight actuator(HS9Z-A11T) and right-angle actuator (HS9Z-A12T).
• The operation characteristics show the contact status when the actuator
enters the entry slot of an interlock switch.

HS1T Interlock Switches with SolenoidInterlock Switch Dimensions and Mounting Hole LayoutsAll dimensions in mm

HS1T-4ZM-G
When using angle adjustable actuator(HS9Z-A15T)

7.1

When using horizontal mounting/straight actuator(HS9Z-A11T)

7 to 8

Accessories (supplied)30

Manual Unlock Key(Material: Plastic)
ø103

HS9Z-A11T
Actuator

(24)
15 9

17.8

Mounting Hole Layout

3-M5 Screw

18

6.5

20

40

(24.5)

20.8

143

7 to 8

97.8

17.8

HS1T-4ZSM-G (side-conduit model)

When using horizontal mounting/straight actuator (HS9Z-A11T)
7.1

7

1
RP: Reference mounting position

4.7

40

61.6
56.8
RP

6.5

1
5.

4.7

30

.2

56.2

(5.1+1.2- 0.5 )✽

35

2.5

Mounting Hole Layout
30

HS9Z-A11T
Actuator

3-M5 Screw

125.5

40.1

4.6

Slot Plug
(*1)

(8)

104.6

125.5

104.6

170

ø5

20.8

59.4
RP

9

ø

(2.6 +1.2- 0.5 )✽ 20

40

30
22

45

7 to 8

22.5

7

1

ø10

3

97.8

(24)
15 9

40.1

18
(24.5)

7 to 8

2.5

6.5

(24)
15 9

3

HS9Z-A11T
Actuator
HS9Z-A15T
Actuator
18
6.5(24.5)

97.8

56.2

40

40.1

4.6
4.7

9

30

ø5

20

40

59.4
RP

6.5

Slot Plug
(*1)

.2

40

1
35

3-M5 Screw

143
97.8

4.7
17.8

97.8

ø

1

56.2

ø5
.2

7.1
56.2

143

7

5.1

(Material: Plastic)

Manual Unlock Key(5.1+1.2- 0.5 )✽

(8)

Manual Unlock Ke

HS9Z-A15T
Actuator

61.6
56.8
RP
30
22

4

ø6.

97.8

(2.6 +1.2- 0.5 )✽

4.7
9
4.6
4.7

20.8

40.1

20.8
ø5
.2

30

RP: Reference mounting position(2.6 +1.2- 0.5 )✽

9
4.6
4.7

HS9Z-A11T
Actuator

35

6.6

7

44.0
3-M5 Screw
Slot Plug(*1)

Accessories (suppl

30(5.1+1.2- 0.5 )✽

47.8 2.5(Material: Plastic)
9.1
1.7

4.2

30

.1

Mounting Hole Layout
Accessories (supplied)(8) 64.6

30

ø5

50.4

59.4
RP

2.5

30
22

67.2

Slot Plug(*1)(5.1+1.2- 0.5 )✽

35

59.4
RP

.1

ø5

(8)
(2.6 +1.2- 0.5 )✽

4.7

61.6
56.8
RP
30
22

61.6
56.8
RP
Mounting Hole Layout

ø10

7.1

RP: Reference mounting position
RP: Reference mounting position

17.5

40

20

40

7

• Dimensions above are at factory setting.
*1) Be sure to plug unused actuator entry slots using square plugs so that dust does not enter into the entry slots. (Square plug is inserted at factory setting.)✽ Actuator mounting reference position

15

6.5

HS1T Interlock Switches with SolenoidInterlock Switch Dimensions and Mounting Hole LayoutsAll dimensions in mm

HS1T-4ZLM-G (with rear unlock button)
When using Horizontal Mounting/Straight Actuator (HS9Z-A11T)
7.1

Mounting Hole Layout

Manual Unlock Key

RP: Reference mounting position(Material: Plastic)

.1

9

ø5

HS9Z-A11T
Actuator

ø10

3

18
6.5
(24.5)

2.5

Rear Unlock Button
7 to 8

27

40.1

4.6
4.7

15 9

(24)

35

Slot Plug
(*1)

7.7

Rear Unlocking
Button

17.8

ø5

.2

56.2
97.8
143

20.8

30

ø2
0

(5.1+1.2- 0.5 )✽

(8)

(2.6 +1.2- 0.5 )✽

30
22

20.8

3-M5 Screw

97.8

4.7

40

30

61.6
56.8
RP

59.4
RP

Accessories (supplied)

7

1
40

HS1T-4ZLSM-G (side-conduit model/rear unlock button)

7.1

When using Horizontal Mounting/Straight Actuator (HS9Z-A11T)

4.7

RP: Reference mounting position
61.6
56.8
RP
(8)

30

Rear unlock
button20.8

3-M5 Screw

40.1

4.7

Mounting Hole Layout

125.5

Rear unlock
mechanicalindicator

104.6

170

104.6

ø5

.2

56.2

125.5

20.8

59.4
RP

4.6

Slot Plug
(*1)

2.5

ø20

9

ø

30

(5.1+1.2- 0.5 )✽

35

5.1

(2.6 +1.2- 0.5 )✽

30
22

45

7 to 8

22.5

7

17.5

1
40

20

40

7

• Dimensions above are at factory setting.
*1) Be sure to plug unused actuator entry slots using square plugs so that dust does not enter into the entry slots. (Square plug is inserted at factory setting.)✽ Actuator mounting reference position

16

HS1T Interlock Switches with Solenoid
Actuator / Accessory
Actuator
Description

Part No. (Ordering Part No.)

Package Quantity

Straight with rubber bushings

HS9Z-A11T

1

Right-angle with rubber bushings

HS9Z-A12T

1

Angle adjustable

HS9Z-A15T

1

Remarks
Actuator retention force is Fzh=5,000N.

• Above actuators can only be used for HS1T. Do not used on other models.
Note) Use dedicated actuators only. When other actuators are used, the interlock switch may be damaged.

Accessory
Description

Part No. (Ordering Part No.)

Package Quantity

Remarks

HS9Z-T3

1

Material: Plastic(Used if the HS1T is installed far inside the equipment toreach to the manual lock.)

Manual Unlock Key (long)

Interlock Switch Dimensions and Mounting Hole LayoutsAll dimensions in mm

Actuator

Accessory

Mounting Hole Layout

0.8

5
-M

rew

Sc

ø7.6

When
mounted (8)

90

5.1

3

78

40

22

2

ø5.1

Actuator Cover(supplied)When
mounted (8)
ø5

12.3

(42.5)
40

123

.1

40
22

18.6
43

ø15

20.5
11.5

18.6
43

5

22.5

47
19.3
0.8

ø1

Manual Unlock Key (long) (Plastic)
HS9Z-T3°

5.1

9

Right-angle with rubber bushings
HS9Z-A12T

22

Straight with rubber bushings
HS9Z-A11T

3

ø4

Angle adjustable
HS9Z-A15T

Mounting Hole Layout
for 2-M6 screw

20°

26

44

44

(M4 screw)

Stopper film *(supplied)

44

Vertical direction
angle adjustment screw(M4 screw)(Horizontal swing)

Vertical direction
angle adjustment screw

R3

.2

16.8

2
26.8

28.4

(Vertical swing)

18.6

60

Stopper film *(supplied)

0.3

3

20°

3

3

3
21.6

* A stopper film is used for positioning the actuator.
After positioning is complete, remove the film.

17

HS1T Interlock Switches with Solenoid
Safety Precautions• Turn power off before installation, removal, wiring, maintenance, orinspection of the interlock switch. Otherwise electric shock or fire
may occur.
• If relays are used in the circuit between the interlock switch andthe load, use only safety relays, since welded or sticking contacts ofstandard relays may invalidate the functions of the interlock switch.
Perform a risk assessment and make a safety circuit which satisfies
the requirements of the safety category.
• Do not place a PLC in the circuit between the interlock switch and theload. Safety security can be endangered in the event of a malfunctionof the PLC.
• Do not disassemble or modify the interlock switch, otherwise
malfunction or accident may occur.
• Do not install the actuator in a location where a human body may
come into contact. Otherwise injury may occur.

• Solenoid lock is locked when energized, and unlocked when deenergized. When energization is interrupted due to wire disconnection
or other failures, the interlock switch may be unlocked causing
possible danger to the operators. Solenoid lock must not be used inapplications where locking is strictly required for safety. Perform arisk assessment and determine whether solenoid lock is required.
• HS11T interlock switches are Type 2 low level coded interlocking
devices (ISO14119). According to EN ISO/ ISO14119, the following
is required to minimize defeat when installing and constructing
systems:
1.	Prevent dismantling or de-positioning of the elements of
the interlocking device by use of non-detachable fixing (e.g.
welding, gluing, one-way screws, riveting). However, use ofnon-detachable fixing can be an inappropriate solution in cases
where a failure of the interlocking device during lifetime of themachinery can be expected and a fast change is necessary.
In this case, measures mentioned below should be used toprovide the required level of risk reduction.
2.	Apply at least one out of the four measures below.
 Mounting out of reach.
 Physical obstruction or shielding.
 Mounting in hidden position.
	Integration of defeat monitoring by means of statusmonitoring/cyclic testing.

Instructions

For details on installation, wiring, and maintenance, see the Instruction Sheet and User’s Manual from the URL.
https://product.idec.com/?product=HS1T

Installation• Do not apply excessive shock to the interlock switch when opening
or closing the door. A shock to the interlock switch exceeding
1,000 m/s2 may cause damage to the interlock switch.
• Install a guide on the door and make sure that force is not applied in
the direction other than the actuator entry direction.
• Do not pull the actuator during lock status. Do not use the interlock
switch as a locking device regardless of the door type. To installa locking device, use a bracket as mentioned in page 3 of the
instruction manual.
• Make sure that the installation surface of the interlock switch is flatand has sufficient strength to not deform when the interlock switch
is installled. Also, do not place foreign objects between the interlock
switch and the installation surface. The interlock switch may not
operate properly if the surface is not flat of a foreign object is placedin between.
• If the operating atmosphere is contaminated, use a protective cover
to prevent entry of foreign objects into the interlock switch throughthe actuator entry slots. Entry of foreign objects into the interlock
switch may affect the mechanism of the interlock switch and cause
a breakdown.
• Make sure that the actuator does not scape the entry of the metal
head. Otherwise, damage may occur.
Install the interlock switch in a location where there is no risk ofdamage.
Also, perform risk assessment before use and take measures such asattaching a protective cover if necessary.

18• While the solenoid is energized, the interlock switch temperaturerises approximately 40°C above the ambient temperature (toapproximately 95°C while the ambient temperature is 55°C). To
prevent burns, do not touch. If cables come into contact with theinterlock switch, use heat-resistant cables.
• The solenoid has polarity. Make sure of the correct polarity whenwiring. Do not apply overvoltage, otherwise the solenoid will be burnt.
• When wiring, make sure that water or oil does not enter from the endof the cable.
Use dedicated actuators only. If other actuators are used, the interlock
switch may be damaged.
• When wiring to the terminal block using a screwdriver while holding
the interlock switch in the hands, be careful not to damage fingers
with the tip of the screwdriver.
• Do not push in the screwdriver with excessive force when wiring to
the terminal block. Internal parts may crack and cause damage.
• Regardless of door types, do not use the interlock switch as a door
stop. Install a mechanical door stop at the end of the door to protect
the interlock switch against excessive force.
• Safety function of the door interlock switch will be lost if a spare key
is inserted into the interlock switch. Make sure that a spare key is not
used on the interlock switch.
• Do not cut or modify the actuator. Otherwise, damage may occur.
• If multiple safety components are wired in series, the Performance
Level to EN ISO 13849-1 will be reduced due to degradation of the
failure detection function.
• Insulation of the cable should withstand environmental influences.
• The entire concept of the control system, in which the safety
component is integrated, must be validated to EN ISO 13849-2.

HS1T Interlock Switches with Solenoid
Instructions
Minimum Radius of Hinged Door

HS1T-4

When using the interlock switch for a hinged door, refer to theminimum radius of doors shown below. For the doors with small
minimum radius, use angle adjustable actuators (HS9Z-A15T).

The HS1T-4 allows manual unlocking of the actuator to pre-checkproper door operation before wiring or turning power on, as well as for
emergency use such as a power failure.

Note: The following values apply when the actuator does not interfere with theinterlock switch when opening and closing the door. Because deviation or
dislocation of hinged door may occur in actual applications, make sure of
the correct operation before installation.

HS1T-7Y

When the door hinge is on the extension line of the actuator mounting
surface:ss
R3 radiu
m
imu

Min

iu
R1
rad
m
imu

Min

s
R2 radiu
m
imu

Min

us
R4
adi
mr
imu
Min

Notes
• Before manually unlocking the interlock switch, make sure that themachine has come to a complete stop. Manual unlocking during
operation may unlock the interlock switch before the machine stops,
Door hinge
Door hinge
hinge of interlock switch with solenoid is lost.
Door hinge
and the Doorfunction• On solenoid lock models, do not manually unlock while the solenoid
When the door hinge is on the extension line of the interlock switch
is energized.
surface:• Do not apply excessive force (0.45 N·m or more) to the manual
unlock key hole, otherwise the hole will be damaged.
• Do not leave the manual unlock key attached to the interlock switch
during operation. This is dangerous because the interlock switch can
Door hinge
Door hinge
Door hinge
be unlocked while the machine is in operation.
us
R4
adi
mr
imu
Min

s
R3 radiu
m
imu

Min

s
R2 radium
imu

Min
Door hinge

The solenoid interlock switch does not unlock even when the solenoid
is de-energized. However, the interlock switch can be unlocked
manually in emergency cases.

Rear Unlock Button and Mechanical Indicator
HS1T-L

Minimum Radius of Hinged Door

Actuator
HS9Z-A11T

R1

R2

R3

R4

510mm

900mm

270mm

450mm

HS9Z-A12T

510mm

840mm

270mm

450mm

HS9Z-A15T

80mm

80mm

50mm

50mm

Rotating the Head
• The rotating head has an allowable movement range. Do not turn thehead exceed the movement range. Otherwise, damage may occur.
• Tightening the head stopper screw withoug aligning the  marks
indicated on the head and body and may cause damage• After installing the rear unlocking button, apply thread-locking
adhesive to the screw so that the screw does not loosen.
• Make sure that foreign objects do not enter between the head andbody when rotating the head.
• Make sure to tighten the head stopper screw securely. Loose screws
may cause malfunction.
• Do not loosen the head stopper screw other than when rotating thehead.

Manual Unlocking• When locking or unlocking the interlock switch manually, turn the key
fully using the manual unlock key supplied with the interlock switch
as shown below. Using the interlock switch with the key not fully
turned (less than 90°) may cause damage to the interlock switch oroperation failures.
• When manually unlocked, the interlock switch will keep the main
circuit disconnected and the door unlocked. Main circuit and lockmonitor circuit remain open.
Front manual unlock key hole

Manualunlock key(supplied)

LOCK

UNLOCK

Normal PositionLOCK

UNLOCK

Unlocked
Rear unlock
buttonNormal Position

Manual Unlocking Position• Use the rear unlock button when a worker is locked inside a safety
fence (hazard area). (Compliant with escape release described in
EN ISO/ ISO 14119 [2003] and GS-ET-19)• When the rear unlock button is pressed, the interlock switch is
unlocked and the door can be opened.
• To lock the interlock switch, pull back the button. When the button
remains pressed, the interlock switch cannot be locked even if thedoor is closed, and the main circuit remains open.
• When the rear unlock button is pressed, the mechanical indicator isdisplayed on the side of the interlock switch. The lock status can be
identified from outside the safety fence.
• Install the rear unlock mechanical indicator on either side of theinterlock switch.
Notes• Install the rear unlock button inside the safety fence (hazardous area)
where only the operator is accessible. Do not install where the rear
unlock button can be reached by an operator outside the safety fence(hazardous area). Otherwise, the interlock switch may be unlocked
during machine operation, causing danger.
• Operate the rear unlock button by hand only. Do not use a tool or withexcessive force. Do not apply force to the button from the direction
other than the proper direction, otherwise the button will be damaged.

Manual Unlocking Position

19

HS1T Interlock Switches with Solenoid

Ordering Terms and Conditions
Thank you for using IDEC Products.
By purchasing products listed in our catalogs, datasheets, and the like (hereinafter referred to as “Catalogs”) you agree to be bound by these terms and conditions. Please readand agree to the terms and conditions before placing your order.

1. Notes on contents of Catalogs

3. Inspections(1) Rated values, performance values, and specification values of IDEC products
listed in this Catalog are values acquired under respective conditions in
independent testing, and do not guarantee values gained in combined
conditions. Also, durability varies depending on the usage environment andusage conditions.
(2) Reference data and reference values listed in Catalogs are for reference
purposes only, and do not guarantee that the product will always operate
appropriately in that range.
(3) The specifications / appearance and accessories of IDEC products listed in
Catalogs are subject to change or termination of sales without notice, for
improvement or other reasons.
(4) The content of Catalogs is subject to change without notice.

2. Note on applications(1) If using IDEC products in combination with other products, confirm theapplicable laws / regulations and standards.
Also, confirm that IDEC products are compatible with your systems, machines,
devices, and the like by using under the actual conditions. IDEC shall bear no
liability whatsoever regarding the compatibility with IDEC products.
(2) The usage examples and application examples listed in Catalogs are forreference purposes only. Therefore, when introducing a product, confirm theperformance and safety of the instruments, devices, and the like before use.
Furthermore, regarding these examples, IDEC does not grant license to use
IDEC products to you, and IDEC offers no warranties regarding the ownershipof intellectual property rights or non-infringement upon the intellectual
property rights of third parties.
(3) When using IDEC products, be cautious when implementing the following.
i. Use of IDEC products with sufficient allowance for rating and 		
performanceii.	Safety design, including redundant design and malfunction prevention
design that prevents other danger and damage even in the event that an
IDEC product failsiii.	Wiring and installation that ensures the IDEC product used in yoursystem, machine, device, or the like can perform and function according
to its specifications(4) Continuing to use an IDEC product even after the performance has deteriorated
can result in abnormal heat, smoke, fires, and the like due to insulation
deterioration or the like. Perform periodic maintenance for IDEC products and thesystems, machines, devices, and the like in which they are used.
(5) IDEC products are developed and manufactured as general-purpose products
for general industrial products. They are not intended for use in the following
applications, and in the event that you use an IDEC product for theseapplications, unless otherwise agreed upon between you and IDEC, IDEC shallprovide no guarantees whatsoever regarding IDEC products.
i.	Use in applications that require a high degree of safety, including nuclear
power control equipment, transportation equipment (railroads / airplanes /ships / vehicles / vehicle instruments, etc.), equipment for use in outer space,elevating equipment, medical instruments, safety devices, or any otherequipment, instruments, or the like that could endanger life or human healthii.	Use in applications that require a high degree of reliability, such asprovision systems for gas / waterworks / electricity, etc., systems that
operate continuously for 24 hours, and settlement systems
iii.	Use in applications where the product may be handled or used deviatingfrom the specifications or conditions / environment listed in the Catalogs,
such as equipment used outdoors or applications in environments
subject to chemical pollution or electromagnetic interference
If you would like to use IDEC products in the above applications, be sure
to consult with an IDEC sales representative.

Head Office
USA
EMEA

4. Warranty(1) Warranty period
The warranty period for IDEC products shall be one (1) year after purchase ordelivery to the specified location. However, this shall not apply in cases where
there is a different specification in the Catalogs or there is another agreementin place between you and IDEC.
(2) Warranty scope
Should a failure occur in an IDEC product during the above warranty period
for reasons attributable to IDEC, then IDEC shall replace or repair that
product, free of charge, at the purchase location / delivery location of the
product, or an IDEC service base. However, failures caused by the following
reasons shall be deemed outside the scope of this warranty.
i. The product was handled or used deviating from the conditions / 		environment listed in the Catalogs
ii. The failure was caused by reasons other than an IDEC productiii. Modification or repair was performed by a party other than IDEC
iv. The failure was caused by a software program of a party other than IDEC
v. The product was used outside of its original purposevi.	Replacement of maintenance parts, installation of accessories, or the like
was not performed properly in accordance with the user’s manual and
Catalogs
vii. The failure could not have been predicted with the scientific and 		technical standards at the time when the product was shipped from IDEC.
viii.	The failure was due to other causes not attributable to IDEC (including
cases of force majeure such as natural disasters and other disasters)
Furthermore, the warranty described here refers to a warranty on the IDEC
product as a unit, and damages induced by the failure of an IDEC product are
excluded from this warranty.

5. Limitation of liability
The warranty listed in this Agreement is the full and complete warranty for IDEC
products, and IDEC shall bear no liability whatsoever regarding special damages,
indirect damages, incidental damages, or passive damages that occurred due to an
IDEC product.

6. Service scope
The prices of IDEC products do not include the cost of services, such as dispatching
technicians. Therefore, separate fees are required in the following cases.
(1) Instructions for installation / adjustment and accompaniment at test operation(including creating application software and testing operation, etc.)(2) Maintenance inspections, adjustments, and repairs(3) Technical instructions and technical training(4) Product tests or inspections specified by you
The above content assumes transactions and usage within your region. Please
consult with an IDEC sales representative regarding transactions and usage outsideof your region. Also, IDEC provides no guarantees whatsoever regarding IDEC
products sold outside your region.

www.idec.com

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ThailandIndia

IDEC Izumi Asia Pte. Ltd.
IDEC Asia (Thailand) Co., Ltd.
IDEC Controls India Private Ltd.

Specifications and other descriptions in this brochure are subject to change without notice.
Information in this brochure is current as of June, 2024.
2024 IDEC Corporation, All Rights Reserved.
EP1702-8

We ask that you implement inspections for IDEC products you purchase without
delay, as well as thoroughly keep in mind management/maintenance regarding
handling of the product before and during the inspection.

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