MDR Series (Bidirectional Electronic Counter)
INSTRUCTION MANUAL

MDR-244M

MDR-166M

MODEL SELECTION
Models
MDR - 144M
MDR - 166M
MDR - 244M
MDR - 266M

Digits
4646Preset Level
12Preset Digits
4646

Preset Range
1 - 9999
1 - 999999
1 - 9999
1 - 999999

MemoryWeight950 g1050 g

SPECIFICATIONS
Models
Display
Input Method / Signal

MDR - 144M
MDR - 166M
Red LED, 14.22 x 8.13mm (Zero Supress)
Contact Input: Relay, Microswitch
Non-Contact Input : L: 0 - 1V ; H: +4.5 - 27V

MDR - 244M

MDR - 266M

Count Mode
Count Speed
Pulse Width
Make (Duty)

90°Quadrature (directional) / Add/Subtract
Contact Input : 20 Hz max.
/
Non-Contact Input : 5000 Hz max.
Contact Input : 25 msec min. /Non-Contact Input : 100 sec min.
1:1

Output TypeContact output: Relay Type 1C (AC230V, 2.5A max. load) * for each output
Non-contact output : NPN open collector (DC30V, 100mA maximum)

Output Display

Turns ON during output time

Output Time

One-shot mode
Overrun mode

Reset

Remote reset (100msec min.)Auto reset : One-shot reset (Output relay : 0.1 - 3sec reset)

MemoryPower Source for Sensor
Input ImpedancePower Source
Power Consumption
Operating Temperature
Operating Humidity
Hi-pot Test
Dielectric TestConnection: 0.1 - 3sec (adjustable): Infinite

E²PROM (10 yrs. retention, 10,000 times)
DC12V 100mA maximum
5k
AC100/110V or AC200/220V ±10%, 50/60 Hz
Approximately 5.5VA
0 - +40°C (Non-freezing)
45 - 85%RH (Non-condensing)AC1500V (1 minute)
20M min. (DC500V megger)
M3 Terminal Screw

Preset Level 1 : Infinite
Preset Level 2 : Infinite or 0.1 - 3sec (adjustable)FEATURES· Fits DIN 72 mm x 144 mm Panel.
· Large high brightness LED.
· Change of preset value during operation can be made without any
accidental tripping of output relay.
· Switch or Pulse input and output is available.
· Operating modes selectable on rear terminals.
· A power supply module is built-in for input devices or power source
application.

· Dust-proof preset switches.
· Input can be inhibited through a terminal connection.
· Output at zero available (option).

CONNECTIONSPower Supply

14 15 16

Other Connections
OverrunResetAC
100/110V
AC200/220VInput

364590° Quadrature input
12,13 ( Common )Output B

ResetOutput ATerminals 6 and 7 (Counter can be reset by conventional switch or relay etc.)+12V

Change of Operating Modes
Add a jumper between 8 and 12 for overrun operation.
Disconnect the jumper between 8 and 12 for instantaneous rest operation.

Output(Subtract)
GND

59 10 11 12 13MemoryGND

48GND

690° quadrature input(Two output type sensor,
rotary encoder, etc.)

Pulse Input

7Latched output

Output TimeOutput time for 0.1 to 3 sec. can be set by turning the screw on the front panel.
Add a jumper between 9 and 12 for latched output.

6Input
Add a jumper between 10 and 13 for 90° quadrature input.
Disconnect the jumper between 10 and 13 for the other input modes.

GND
Output (Add)

MemorySubtracting

Switch Input

1 2

Make sure connect terminals 11 and 12.
And please make a remote reset after turning the power supply on only at
the first time.

3

Input Inhibition
Add a jumper between 25 and 26 to stop input signals.

AddingInhibit
Input

Output

NCCOMNC

Switch Output25 26COMNONOGND

17 18 19 20 21 22CAUTION

SET 1

SET 2

Use SET 2 for output on standard 1 level preset model.

· Do not apply voltage to switch input terminal or remote reset terminal.
· The display is blanked, input or reset is inhibited, and output relay is notlatched during power interruption.

With internal power supply
Pulse Output

1 2· Switch and sensor inputs cannot be used at the same time.

3· Subtracting and adding inputs cannot be used at the same time.

SET 1 load· Use shielded cable for input or reset, and also use shielded cable on otherlong lines.

SET 2 load

23 24
Use SET 2 for output on standard 1 level preset model.

· Mount the counter, as far as possible, away from motor starters, large
relays,etc.

SET 1 load

With internal power supply

23 24 25 26
SET 2 load

Use SET 2 for output on standard 1 level preset model.

6 ~ 45 V DC
PowerSupply

OPERATING MODES
INSTANTANEOUS RESET TYPEOVERRUN INSTANTANEOUS OUTPUT TYPE

PowerPowerInput

Preset Value1Input

23n-1n12Output (one shot)
Display

Display
23n-1n3n-1n23n-1nn+1n+2n+1nn-1

0.1~3sOutput

0.1~3s113123n+1n+2n+301123n-1nn+1n+2

0.1~3sn+1nn-1

OVERRUN TYPE
Power
1Input2

latchedOutput
1Display2

3n-1nn+1100ms min.

Remote Reset

DIMENSIONS - MILLIMETERSCONNECTIONS TO TERMINALS1

MDR-144M
MDR-244M
MDR-166M
MDR-266M
Switch Input A ( Adding )2

Switch Input B ( Subtracting )3+12 V

4Pulse Input A ( Adding ) Sensor input

5Pulse Input B ( Subtracting ) Sensor input

6GND

7Reset8Overrun

9Latched Relay

10Input Selection

11Memory

12Common1314Common
NeutralNO.
SET0.1

3 SEC

72

ZERO

2 3 4 5234567891011121367.6

1

14414151617181920212223

24

25

26

SET0.1

3 SEC

72

ZERO

139.6

1 2 3 4 5 6144

SET20.1

3 SEC

SET28

2 5 8 7 3 4 5 8107.5

144

Panel Cutout
SET2

SET1

SET2

15100 / 110 VAC

16200 / 220 VAC

17COM.

18N.O.

19N.C.

2 3 4 5 6 7 3 4 5 6 7 8

SwitchOutput(SET)

LINE SEIKI CO., LTD

37-7, CHUO-CHO, 2-CHOME
MEGURO-KU, TOKYO
JAPAN 152-0001
TEL: +83-3-3716-5151
FAX: +83-3-3710-4552
E-MAIL: webtrade@line.co.jp
URL: http://www.lineseiki.com

N.O.
N.C.
COM.

21

N.O.
N.C.

22
23

Pulse Output( SET )

140±0.7

SwitchOutput(SET2)
SwitchOutput(SET1)

Pulse Output( SET 2)
Pulse Output( SET 1)

24
144

COM.

20

3 SEC

720.1

ZERO

9.5

68.0±0.7

SET172ZERO

25

Input is Inhibited

26

GND

This manual was last revised May 13, 2010. 4MDR001B*Subject to change without prior notice.
All Rights Reserved,Copyright © 2010,LINE SEIKI CO.,LTD.