MODEL: WJPAD2

WJPAD2 SPECIFICATIONS

ES-2275 Rev.2 Page 3/5

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

24 V: Approx. 16 V / 4.7 mA: ≥ 200 kΩ: ≤ 200 Ω

Detecting level: 2 V (Detecting voltage in the internal

circuit.)

Detecting pulse edge: OFF (input monitor LED ON) to ON

(input monitor LED OFF)

■ Voltage Pulse

Waveform: Square or sine

Input impedance: 10 kΩ min.

Pulse amplitude: 0.1 – 100 Vp-p

Max. voltage between input terminals: 50 V

Detecting level: 0 – 5 V

(Detecting voltage in the internal circuit.)

Detecting pulse state: A pulse rise detected when the input

voltage goes above the detecting level; a pulse sink

detected when it goes below the level.

■ Two-wire Current Pulse

Input resistance: Receiving resistor 100 Ω

Input range: 0 – 25 mA

Minimum pulse amplitude: 10 mA

Detecting level: 0 – 5 V

(Detecting voltage in the internal circuit.)

Detecting pulse state: The input resistor (100 Ω) converts

the current signal into 0 – 2.5 V. A pulse rise detected when

the voltage goes above the detecting level; a pulse sink

detected when it goes below the level.

50V max.

Amplitude

Vinp-p

t

Volts

DC Offset

■ Voltage pulse waveform

OUTPUT SPECIFICATIONS

■ DC Current: 0 – 20 mA DC

Minimum span: 1 mA

Offset: Max. 1.5 times span

Load resistance: Output drive 12 V max. for Output 1;

7 V max. for Output 2

■ DC Voltage: -10 – +10 V DC

Minimum span: 10 mV

Offset: Max. 1.5 times span

Load resistance: Output drive 1 mA max.; at ≥ 0.5 V

■ Alarm Output: Relay contact

Rated load: 30V DC @ 1 A (resistive load)

Maximum switching voltage: 110 V DC

Maximum switching power:30 W

Minimum load: 10 mV DC @ 0.1 mA

For maximum relay life with inductive loads, external

protection is recommended.

INSTALLATION

Power input

•AC: Operational voltage range 85 – 132 V,

47 – 66 Hz, approx. 6.6 VA

•DC: Operational voltage range: Rating ±10 %, or 85 – 150

V for 110 V rating; ripple 10 %p-p max.; Approx. 3.9 W (145

mA at 24 V)

Operating temperature: -5 to +60°C (23 to 140°F)

Operating humidity: 30 to 90 %RH (non-condensing)

Mounting: Surface or DIN rail

Weight: 300 g (0.66 lb)

PERFORMANCE in percentage of span

Accuracy: Input accuracy + output accuracy

Input accuracy: ±0.05% of the selected freq. range

Inversely proportional to the input span.

[Example] Open collector input, 0 – 50 kHz

Selected Freq. Range 100 kHz ÷ Input Span 50 kHz ×

Accuracy 0.05 % + Output Accuracy 0.05 % = ±0.15 %

Output accuracy: ±0.05 % of the output range

Alarm setpoint accuracy: ±0.1 % (or ±0.2 % at ≥ 10 kHz)

Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)

Response time: 0.5 sec. + 1 pulse cycle (0 – 90 %)

Line voltage effect: ±0.1 % over voltage range

Insulation resistance: ≥ 100 MΩ with 500 V DC

Dielectric strength: 2000 V AC @1 minute

(input or alarm output to output 1 or output 2 to power to

ground)

1000 V AC @ 1 minute (output 1 to output 2)