ERDM425 - Delay On Make Timer Series

Series: ERDM
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The ERDM Series are a combination of digital electronics and a reliable electromechanical relay. These devices offer a DPDT relay output for relay logic circuits, and isolation of input to output voltages. Cost effective for OEM applications, such as random starting, sequencing ON, switch de-bouncing, anti-short cycling, and other common delay-on-make applications.


Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The output is de-energized before and during the time delay. At the end of the time delay, the output energizes and remains energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.

Property (Mouseover for details) Value
Input Voltage (V) 120 V ac
Input Tolerance (%) -20% - 10%
Input AC Line Frequency (Hz) 50/60
Output Type Isolated relay contacts
Output Form DPDT
Output Load Rating (VA) 10 A resistive @ 120/240 V ac and 28 V dc; 1/3 hp @ 120/240 V ac
Time Delay Type Digital
Time Delay Range 0.3 - 30 s adjustable
Time Delay Tolerance (%) ±10%
Recycle Time (ms) ≤150
Adjustment Type Onboard knob
Repeat Accuracy (%) ±0.5%
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤±2%
Insulation Resistance ≥100
Isolation Voltage (V) ≥1500 Vrms input to output
Polarity DC units are reverse polarity protected
Life Full load: 1 x 10⁶; Mechanical: 1 x 10⁷
Termination Type 0.25 in. (6.35 mm) male quick connect terminals
Mounting Method Surface mount with 2 #6 (M3.5 x 0.6) screws
Operating Temperature -40° to 65°C (-40° to 149°F)
Storage Temperature (F/C) -40° to 85°C (-40° to 185°F)
Dimensions 3.5 H x 2.5 W in. (88.9 x 63.5 mm)
Weight (lbs/g) 0 Kg
Dimensions 3.5 H x 2.5 W in. (88.9 x 63.5 mm)
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