MODEL: M2PRU

M2PRU SPECIFICATIONS

ES-5076 Rev.18 Page 2/6

http://www.m-system.co.jp/

CAUTION

1) The M2PRU’s output waveform is not uniform due to its

scaling method. The user must be aware that it may be

inconvenient for certain types of application.

2) The M2PRU is designed to accept at the maximum of 100

kHz, which may cause errors due to chattering in the input

pulses.

A filter circuitry (time constant: approx. 1 msec.) is

incorporated to eliminate unwanted chattering when the

mechanical contact input is specified. It is effective for

most relay types, however, an external CR filter as indicated

below, could be added if the user need improvement. Limit

the input frequency to 10 Hz at maximum.

C

+

‒

Relay

R

PULSE

SCALER

C = 100 µF

R = 100Ω

GENERAL SPECIFICATIONS

Construction: Plug-in

Connection: M3 screw terminals (torque 0.8 N·m)

Screw terminal: Chromated steel (standard) or stainless

steel

Housing material: Flame-resistant resin (black)

Isolation: Input to output to power

Chattering protection: Filter provided for mechanical

contact input (time constant: approx. 1 msec.)

Input pulse sensing: DC coupled; capacitor coupling

(automatic trigger*) is field selectable with the side DIP

switch for the voltage pulse input.

*Capacitor coupling, with which the detecting levels are

automatically set within two peaks of the waveforms, is

effective way to detect those with DC offset. However, it

may be ineffective if the duty ratio is extremely high or low.

The automatic trigger method can compensate such

irregular pulses.

Scaling factor adjustment: 10-position rotary switch; 1.0000

specified when ordering

Output pulse width adjustment: Single-turn screwdriver

adjustment (front); 5 μsec. – 400 msec. (one-shot type);

Factory set to 5 μsec. except for the mechanical contact

input set to 15 msec. or AC/DC switch output set to 500

μsec.

(Min. 400 μsec. recommended for AC/DC switch output of

which the internal voltage drop value may increase with a

shorter pulse width.)

Output pulse width range selector: Double-throw SW (front)

INPUT SPECIFICATIONS

Excitation: Shortcircuit protection; limited to approx. 40 mA

at shortcircuit

■ Open Collector

Frequency range: 0 – 100 kHz

Pulse width time requirement: Min. 5 μsec. for ON and OFF

Sensing: Approx. 24 V DC @2 mA

Detecting levels: ≤ 400 Ω / 0.8 V for ON,

≥ 1200 Ω / 2.4 V for OFF

■ Mechanical Contact

Frequency range: 0 – 30 Hz

Pulse width time requirement: Min. 10 msec. for ON and OFF

Sensing: Approx. 24 V DC @2 mA

Detecting levels: ≤ 400 Ω / 0.8 V for ON,

≥ 1200 Ω / 2.4 V for OFF

■ Voltage Pulse

Waveform: Square or sine

Frequency range: 0 – 100 kHz

(min. 10 Hz for sine waves)

Pulse width time requirement: ≥ 5 μsec. for high and low

levels

Input impedance: ≥ 10 kΩ

Max. input voltage across the terminals: ±50 V

Detecting levels

DC coupled: ≥ 2 V DC for high level; ≤ 1 V DC for low level

Capacitor coupled: ≥ 2 Vp-p

■ Two-wire Current Pulse

Frequency range: 0 – 100 kHz

Pulse width time requirement: Min. 5 μsec. for high and low

levels

Detecting levels:

≥ 10 mA for high level

≤ 5 mA for low level

Maximum current: ±30 mA

Input resistance: Receiving resistor 200 Ω