SVD-208-053

INSTRUCTION MANUALAC VOLTAGE ALARM SETTER
SVD-□-105
SVD-□-105D(With contact delay circuit)

SVD-208-053

Thank you for purchasing DAIICHI ELECTRONICS product.
Read this instruction manual carefully before installation, wiring, and using this product.

Safety precautions
 Environment conditions
Please be sure to use this product in a place that meets the following conditions. In places that do not meetthis condition, malfunctions and failures, and performance and product life may be reduced.
 Within the range of ambient temperature -10 to +55 ℃, humidity 30 to 85% RH.
 Environment with low corrosive gas, dust, salt and oil smoke. (Corrosive gas：SO2 / H2S, etc.)
 Environment that is not affected by vibration or shock.
 Environment with less external noise.
 Altitude 1000m or less.
 Outdoor use conditions
 These products are not a dustproof, waterproof, and splash proof construction.
Please avoid the place with much dust. Moreover, please install in the place not exposed to rain or
water drop.
 Please do not install in the place where sunlight hits directly.
Discoloration and degradation of a name plate, and deformation of the case by the surface temperaturerise may occur.
 Mounting and wiring
Please refer to this instruction manual for mounting and the wiring.
 Please refer to connection diagram for the wiring.
 Please avoid hot line work.
 Please use an electrical wire size suitable with the rated current.
 Please check the tightening of the screw.
 Preparation
This product must be set before use.

Please set correctly after reading this instruction manual.

 Maintenance and inspectionInspection in energized state is dangerous.
This product has no parts to replace during regular inspections.

Please wipe off lightly with the dry soft cloth. Please do not use the organic solvent, chemicals,
cleaners, etc., such as an alcohol, for cleaning.
 Storage
Please store in a place that meets the following conditions.
 The ambient temperature within -30 to +60 ℃ (storage temperature).
 Daily average temperature 40 ℃ or less.
 Location corresponding to the usage environment and use conditions.
 Aluminum electrolytic capacitors are used in products. Please energize the power supply within one
year after purchase.
 Countermeasures against troubles
If trouble occurs within the warranty period, DAIICHI ELECTRONICS will repairs this product.
 Disposal
Please dispose this product as industrial waste (non-combustible).
Mercury parts and a nickel-cadmium battery are not used for this product.
 Warranty period
The warranty period of the product is one year after the date of delivery.

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SVD-208-053

Contents

Safety concerns ･･････････････････････････････････････････････････････････････

1

1. Product outline ･･･････････････････････････････････････････････････････････

3

1.1 Features of product ･････････････････････････････････････････････････････

3

2. Handling explanation
2.1 Outline dimension ･･･････････････････････････････････････････････････････

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2.2 Cautions on mounting ････････････････････････････････････････････････････

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2.3 Example of combination mounting ･････････････････････････････････････････

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2.4 Installation ････････････････････････････････････････････････････････････

5

2.4.1 The mount to DIN rail, and the method of detachment ･････････････････

5

2.4.2 Mounting by screws ･･････････････････････････････････････････････････

5

2.5 Connections ･････････････････････････････････････････････････････････････

6

2.6 Cautions on connections ･････････････････････････････････････････････････

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2.7 Handling explanation ････････････････････････････････････････････････････

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2.7.1 Settings ････････････････････････････････････････････････････････････

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2.8 Control output condition ････････････････････････････････････････････････

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3. Principle of operation
3.1 Block-diagram ･･･････････････････････････････････････････････････････････

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3.2 Explanation of operation ････････････････････････････････････････････････

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4. Specifications and performance
4.1 Specifications ･･････････････････････････････････････････････････････････

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4.2 Performance ･････････････････････････････････････････････････････････････ 10
5. Composition of type ･･･････････････････････････････････････････････････････ 112

SVD-208-053

1. Product outline
This product is a plug-in type alarm setter that receives AC voltage as an input, compares it with a preset value,detects excess or deficiency, and outputs a contact signal.

1.1 Features of product This product is the high quality and high reliability and noise-proof design.
 The detection action can be confirmed with a LED.
(LED color：Red, Detection：LED ON, Non-detection：LED OFF) The dead-band range can do variable.
 The digital switch makes the setting clear.
 This product is compact plug-in type.

2. Handling explanation
2.1 Outline dimension

Setting switch (1) Setting switch (2)
HH

H1

H2

LL

L2

L1

HL

L

H

H

―

H

L

―

L

3

SVD-208-053

2.2 Cautions on mounting
Please install indoors in a place with low mechanical vibration, dust, and corrosive gas.
And, please select indoors that are not affected by a strong electromagnetic field by large current bus, saturable
reactor etc. in the vicinity.
The product life is affected by the ambient temperature, so please avoid installing it in a hot and humid place.
There is no restriction on mounting position.
Mounting can be done on 35mm width DIN rail mounting or screw mounting.
For screw mounting, please install with M4 screw. (However, the screw is not attached. The tightening torqueof a screw, M4：1.00 to 1.30N･m)
In consideration of heat dissipation and wiring space, provide a space equal to or greater than that in section
2.3 "Example of combination mounting dimensions" for horizontal and vertical intervals.
Please leave space between terminal and metal panel for 10mm or more.

2.3 Example of combination mounting (Unit mm)
Panel mounting

40

Rail mounting

Over 55

40

2-M4screw

40

Over 55

Over 55

Over 535

Over 5

Over 180

Over 180

Over 55

40

40

40

Please use rail of IEC, DIN technical standard 35mm width rail
(reinforced type).
 Consider the heat dissipation due to the natural convection of the air, and provide installationintervals greater than the above.
 If the duct for wiring is used, please detach 20 mm or more from the upper surface and the undersurface
of a body.

4

SVD-208-053

2.4 Installation
2.4.1 The mount to DIN rail, and the method of detachment<Note> If it insert and remove the body section from a socket, please carry out after shutting down a power
supply and an input signal.
(1) How to fix a socket.
Set the base socket so that its slider is at
the bottom. Position the upper hook at therear side of base socket on the DIN rail andpush in the lower.

(2) How to fix a body to a socket.
Do in the direction which can read a label
character correctly, and insert a body straightly.
After inserting it all the way in, please fix themain body with the yellow stopper of the socket.

Stopper(3) How to remove a body from a socket.
Remove the stopper of the socket from the main
body. Please pull a body to straight near side.

(4) How to remove a socket.
Push down the slider utilizing a minus
screwdriver and pull.

Minus screwdriver<Note>
If a transducer body is taken out and inserted
aslant, the terminal of a body will bend and aloose connection etc. will occur.
(2) Mounting by screws

Remove the stopper of the socket from the main body. Please pull a body to straight near side.
Install the socket with M4 screw and attach the main unit after wiring.
(However, screws are not included, tightening torque of screw M4：1.0 to 1.3 N･m)

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SVD-208-053

2.5 Connections
AUX.
SUPPLY INPUT
＋
～

8

7

～

6

5
4

SOCKET

HH
LL
HL
H
L

9

3

10 11 1

2

H1
L2
L
－
－

H2
L1
H
H
L

2.6 Cautions on connections(1) An external connection terminal is M3.5 screw terminal.
Please use a solderless contact for connection with a terminal.
The tightening torque of a screw is 0.7 to 0.9N･m.
(2) When connecting an inductive load such as an electromagnetic relay to the contact output, we recommend
installing a diode or surge killer near the load, as shown in the example below.
《 An example of a spark elimination circuit 》

R

Ｒ

Ｒ

Ｒ

C
～

～

2.7 Handling explanation
The usage of this product should check the name plate and specification of actual goods, and should performthe right handling.
2.7.1 Settings(1) The setup of operation value.
Please set to needed operation value in a front digital switch.
It can set to 10 to 99％ (1％ step), using rated voltage as 100％.
<Caution> If a digital switch is set in the state of power-supply applying, detection action may be doneeven if it does not exceed set value. (This is not a product defect.)(2) Variable of dead band.
The dead band variable VR can continuously vary the dead band from 0.5 to 5%.

6SVD-208-053

2.8 Control output conditions ( H type
Auxiliary supply / Input
Auxiliary supply OFF
Not based on input.
Auxiliary supply ON
INPUT ＜ H
Auxiliary supply ON
H ≦ INPUT

Input state

Auxiliary supply ON
INPUT ≦ L
Auxiliary supply ON
L ＜ INPUT

Contact state

LED status

H

H

F.S

0

1

2

OFF

3

H

H
F.S

0

1

2

OFF

3

H

H
F.S

0

 L type
Auxiliary supply / Input
Auxiliary supply OFF
Not based on input.

: Input)

1

2

Input state

3

ON

Contact state

LED status
L

L
F.S

0

1

2

3

OFF
L

L
F.S

0

1

2

3

ON

L

L
F.S

0

1

2

3

OFF

 HL type
Auxiliary supply / Input
Auxiliary supply OFF
Not based on input.
Auxiliary supply ON
INPUT ≦ L
Auxiliary supply ON
L ＜ INPUT ＜ H
Auxiliary supply ON
H ≦ INPUT

Contact state

Input state
L

L

H
F.S

0
L

F.S

9

11

2

1

3

10

9

11

2

1

3

H
F.S

0
L

10

H

0
L

LED status

H

10

9

11

2

1

3

H
F.S

0

10

9

11

2

1

3

L

H

OFF

OFF

L

H

ON

OFF

L

H

OFF

OFF

L

H

OFF

ON

 HH type
Auxiliary supply / Input
Auxiliary supply OFF
Not based on input.
Auxiliary supply ON
INPUT ≦ H1
Auxiliary supply ON
H1 ＜ INPUT ＜ H2
Auxiliary supply ON
H2 ≦ INPUT

Contact state

Input state
H1

H2

H1

H2

H1

H2

H1

H2

H1
F.S

0

F.S

0

F.S

0

F.S

0

10

10

10

10

9

9

9

9

LED status

H2
11

11

11

11

2

2

2

2

1

1

1

1

3

3

3

3

H1

H2

OFF

OFF

H1

H2

OFF

OFF

H1

H2

ON

OFF

H1

H2

OFF

ON

 LL type
Auxiliary supply / Input
Auxiliary supply OFF
Not based on input.
Auxiliary supply ON
INPUT ≦ L2
Auxiliary supply ON
L2 ＜ INPUT ＜ L1
Auxiliary supply ON
L1 ≦ INPUT

Contact state

Input state
L2

F.S
L2

F.S

9

11

2

1

3

10

9

11

2

1

3

L1
F.S

0
L2

10

L1

0
L2

LED status

L1

L1

0

0

L2

10

9

11

2

1

3

L1
F.S

7

10

9

11

2

1

3

L2

L1

OFF

OFF

L2

L1

ON

OFF

L2

L1

OFF

ON

L2

L1

OFF

OFF

SVD-208-053

3. Principle of operation
3.1 Block-diagram
AC voltage input

AC/DC

AmplifierComparator

Drive circuit

Ry1

Drive circuit

Ry2

Setting
part
Referencevoltage
Comparator±12V
AUX. SUPPLY

Setting
part±5V

Referencevoltage＋12V

3.2 Explanation of operation
After than AC-voltage input is transforming into DC voltage, constant value is made to amplify and it
considers as the input of comparator.
And, the reference voltage obtained from the control power source is divided in a setting part's digital
switch, this is considered as the input of the comparator of another side, and voltage comparison is
performed.
An output operates a relay through a drive circuit.

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SVD-208-053

4. Specifications and performance
4.1 Specifications
Item

Specification① 0 to 300V (1mA)

50/60Hz

② 0 to 220V (1mA)

50/60Hz

③ 0 to 173.2V [300/√3V] (1mA)④ 0 to 150V (1mA)

Input(Input current)

50/60Hz50/60Hz

⑤ 0 to 127V [220/√3V] (1mA)⑥ 0 to 110V (1mA)

50/60Hz50/60Hz

⑦ 0 to 86.6V [150/√3V] (1mA)

50/60Hz

⑧ 0 to 63.5V [110/√3V] (1mA)

50/60Hz① AC･DC80 to 264V (AC100/110V 50/60Hz, AC200/220V 50/60Hz, DC100/110V)
AC power：5.7VA, DC power：2.2W

Auxiliary supply② DC19 to 29V (DC24V) 2.2W
Contact output

Change over contact (1c contact)

Contact capacity

Maximum switching load：AC250V 2A (cosφ=1)，
DC110V 100mA (L/R＝7ms)
Minimum switching load：DC5V 10mA

Output

G6C-2114PUS (OMRON Corporation)
Mechanical life：50 million times(Switching frequency, 300 times/minute)

Relay

Electric life：100,000 times(Switching frequency, 30 times/minute)
H
Setting range

Dead band

L

H ： －

HL

H ：10 to 99％ (1％ step) ，L ：10 to 99％ (1％ step)，L ：10 to 99％ (1％ step)

HH

H1：10 to 99％ (1％ step) ，H2：10 to 99％ (1％ step)

LL

L1：10 to 99％ (1％ step) ，L2：10 to 99％ (1％ step)

0.5 to 5％ continuation variable

Starting delay time (１)Contact delay

H ：10 to 99％ (1％ step) ，L ： －１( )0.5 second (Standard) (Production is possible in 0.5～10s in 0.5s step.)
Option(Production is possible in 0.5～10s in 0.5s step.)

Operating temperature limits-10 to +55℃ ，Operating humidity limits

30 to 85％ RH

Storage temperature limits-30 to +60℃

Accessories

Socket：11PFA or 11PFA-W (OMRON Corporation)

Material

Main body

ABS(V-0)

SocketPBT resin

Case color

Black (Munsell N1.5)

Mass

Approx. 320g

Warranty period

One year１

Note( ) Starting delay and contact delay (option) cannot be designated simultaneously.
［In case of starting delay designation.］(TYPE：SVD-□-105)
Contact delay is set to below 0.3 seconds of input-and-output response of product.
［In case of contact delay designation.］（TYPE：SVD-□-105D）
Starting delay becomes almost the same as the time of contact delay.

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SVD-208-053

4.2 Performance
Item

Specification

Setting accuracy±1.0％ (% of maximum input value)

Repeatability±1.0％ (% of maximum input value)

Response time
Influence oftemperature
Influence ofauxiliary supply

Operating time90⇔110％ of step input to operation value.

Less than 300ms

Reset time

110⇔90％ of step input to operation value.

Less than 300ms

Error of operation value：1.0% (% of maximum input value)
Error of operation time and contact delay：10.0％
Error of operation value：1.0% (% of maximum input value)
Error of operation time and contact delay：10.0％
Error of operation value：1.0% (% of maximum input value)

Influence of
frequency

Error of operation time and contact delay：10.0％

Influence ofdistorted wave

Error of operation time and contact delay：10.0％

Overload capacity

Insulation
resistance

Error of operation value：1.0% (% of maximum input value)

By 23±20℃
Within the auxiliary
supply range
By 45 to 65Hz
3rd-harmonic, 15% mixing

Voltage input

2 times 10 seconds, 1.2 times continuation of rated voltage.

Auxiliary supply

1.5 times 10 seconds of rated voltage.
Upper limit of the auxiliary supply voltage range is continued.

Between electric circuit and case.
Between input terminals and auxiliary supply
terminals and contact output terminals.

Above 50MΩ at DC500V.

Between electric circuit and case.
Withstand voltage

Impulse withstandvoltage

Noise-capacity

Vibration
Shock

Between input terminals and auxiliary supply
terminals and contact output terminals.

AC2000V (50/60Hz) 1 minute.

Between electric circuit and case.

5kV 1.2/50μs. Both positive andnegative polarity, for 3 times each.

Between auxiliary supply terminals.

3kV 1.2/50μs. Both positive andnegative polarity, for 3 times each.

Oscillatory surge voltage
If a vibration damping waveform (1 to 1.5MHz, Peak voltage：2.5 to 3kV) is repeated andadded, there is no malfunction.
Auxiliary supply circuit (Normal / Common)
AC input circuit (Normal / Common)
Contact output circuit (Common)
Square wave impulse noise
If a noise (1μs, 100ns width) is repeated and added, there is no malfunction.
Auxiliary supply circuit (Normal / Common) Over 1.5kV
AC input circuit (Normal / Common) Over 1.5kV
Contact output circuit (Common) Over 1.0kV
Electric wave noise
If intermittence irradiation of the electric wave of a 150,400MHz band is done by (1W, 1m),there is no malfunction.
Electrostatic noise±8kV (at the case of energization) is that there is no malfunction.
±10kV (at the case of no-voltage) should not have damage or the abnormalities of parts.
Malfunction：Frequency 16.7Hz, Double amplitude 1mm to X, Y, Z direction for 10 minute.
Durability ：Frequency 10 to 25Hz, Double amplitude 2mm to X, Y, Z direction for 2 hours.
Malfunction：Shock of 98m/s2 to X,Y,Z direction for 3 times.
Durability ：Shock of 294m/s2 to X,Y,Z direction for 3 times.

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SVD-208-053

5. Composition of type
SVD- (1) -105 (2)
(1)
Mark
H
L
HL
HH
LL

(2)
Mark
－
D

Contents
High limit setting
Low limit settingHigh and low limit setting
2 steps of high limit setting
2 steps of low limit setting

Contents
With no contact delay circuit
With contact delay circuit

Tokyo Office : 11-13, Hitotsuya 1-chome, Adachi-ku, Tokyo, 121-8639, JAPAN.
TEL：+81-3-3885-2411 , FAX：+81-3-3858-3966
Kyoto Office : 1-19, Ichinobe-Nishikawahara, Jyoyou-shi, Kyoto, 610-0114, JAPAN.
TEL：+81-774-55-1391 , FAX：+81-774-54-1353
Revision A,

DATE：November 8, 202211