Separate Amplifier Proximity SensorES series


Amplifier Unit, Main Unit, PNP


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One-line expansion system


Main unit

Operation mode

N.O./N.C. (switch-selectable)

Timer function

10-ms delay / timer OFF switchable*2




Control output

PNP open collector 100 mA max.
26.4 V, residual voltage 1 V max.

Disconnection alarm output

PNP open
collector 100 mA max.
26.4 V,
residual voltage 1 V or less*3

Response time

1 ms max.

Temperature characteristics

Within ±8% of detecting distance at 23°C
when within 0 to 50°C temperature range

Sensitivity adjustment

25-turn trimmer

Protection circuit

Reverse power connection protection, output
overcurrent protection, output surge protection


Power voltage

12 to 24 VDC, ripple (P-P) 10% max.

Current/power consumption

25 mA max.

Environmental resistance

Operating ambient temperature

0 to 50°C*4 , No condensation

Operating ambient humidity

35 to 85% RH (No condensation)


Approx. 65 g (including nuts and 2-m cable)

*1 The ES-M1(P)/M2(P) cannot be connected to the EH-422, 430, 440 or 290.
*2 During N.O. operating configuration, the off delay timer is 10 ms. During N.C., the on delay timer is 10 ms.
*3 Broken connection warning output is not available on the ES-M2(P).
*4 The ambient temperature changes according to the fo llowing conditions when expansion units are added. When adding units, always attach them to a DIN rail (metal plate) and set the output current to
20 mA or less.
1 to 10 expansion units: 0 to +50˚C
11 to 16 expansion units: 0 to +45˚C

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