Install Instructions
ICM
220
LOCKOUT RELAY
Low cost lockout relay helps 
eliminate nuisance lockouts 
due to impedance relay failure
LII278
www.icmcontrols.com
800-365-5525
ICM CONTROLS
7313 William Barry Blvd.
North Syracuse, NY 13212
SPECIFICATIONS
Input
• Voltage: 18-30 VAC
• Frequency: 50-60 Hz
Output 
•  Relay: SPDT
•  Relay Contacts: 2 amps maximum 
  @ 30 VAC resistive
•  Power Consumption:
  2 watts maximum during lockout
MODE OF OPERATION
Upon application of power with the safety 
switches closed, the load will energize. If any of 
the safety switches open for longer than 
600 ms, the fault light will come on and the load 
will stay de-energized regardless of the state 
of the safety switches. Power must then be 
removed for 100 ms and safety switches must 
be closed in order to reenergize the load, upon 
which the fault light will be off.
INSTALLATION
1.  Disconnect power.
2.  Connect terminals as shown in the wiring diagram below.
3.  Reapply power, check operation.
•Helpstoeliminatenuisancelockouts
•Replacesimpedancerelays83and93
WIRING DIAGRAM
24 VAC RC
3 1
2
4
Safety Switches
Load 
Contactor
Fault 
Light

