Three configurations are appropriate for interlock applications. The parallel actuation can result in on/off/on signal if the actuator passes by the switch rather than coming to rest in proximity to it. This is NOT a recommended configuration for interlock applications.
The GuardSwitch Series 300 Safety Interlock Switch, models 341-BT and 343-BT DPST (double pole single throw) are designed for use with safety monitored relays or monitored circuits. To achieve the optimum defeat resistant features of the switch, both the switch circuit (Circuit 1) and the tamper circuit (Circuit 2) must be connected. An optional third circuit can be provided to indicate at the panel which guard is open.
The 371-BT Series DPST safety interlock switch is designed for use with safety monitored relays or monitored circuits. To achieve the optimum Series 300 defeat resistant feature of the 371-BT, both the switch circuit (Circuit 1) and the tamper circuit (Circuit 2) must be connected.
The GuardSwitch Series 300 Safety Interlock Switch, models 391-BT and 393-BT DPST (double pole single throw) are designed for use with safety monitored relays or monitored circuits. To achieve the optimum defeat resistance features of the switch, both the switch circuit (Circuit 1) and the tamper circuit (Circuit 2) must be connected. An optional third circuit can be provided to indicate at the panel which guard is open.
The INT-03-024 or INT-03-120 Safety Monitor Relay is intended for use as a part of a safety circuit in guard interlock applications. It is a safety relay which uses positive guided relays, configured for self- checking, to inhibit machine start-up in the event of an internal component failure.
The INT-04 Series Emergency-Stop (E-Stop) Safety Relays are designed for use as part of a safety circuit in emergency-stop or safety floor mat sensing applications. Each is a safety relay that uses positive-guided relays, configured for self-checking, to inhibit machine restart in case of internal component failure.
The INT-05-024 or INT-05-120 Expansion Safety Relay is intended for use as part of a safety circuit. It provides three additional safe output contacts when used with the INT-03 Safety Monitor Relay or INT-04 Emergency-Stop Safety Relay.
Only trained professional electricians may install, startup, modify, and retrofit this equipment! Disconnect the device / system from all power sources prior to starting any work! If installation or system errors occur, line voltage may be present at the control circuit in devices without DC isolation!
141 Series interlock/position switches are specially designed for use in washdown/chemical applications, such as commercial dishwashers and parts cleaning machines.
Set range at 20 mega ohms (switches with triac output, set ohm range at 20 kilo ohms). For a normally open switch, the meter will read a high impedance with the actuator away. It will read very high to infinity range (triac switches will read high kilo ohm to infinity range) with the actuator within sense range. You will see the opposite reading for a normally closed switch.
Set range at 20 mega ohms (switches with triac output, set ohm range at 20 kilo ohms). For a normally open switch, the meter will read a high impedance with the actuator away. It will read very high to infinity range (triac switches will read high kilo ohm to infinity range) with the actuator within sense range. You will see the opposite reading for a normally closed switch.
Set range at 20 mega ohms (switches with triac output, set ohm range at 20 kilo ohms). For a normally open switch, the meter will read a high impedance with the actuator away. It will read very high to infinity range (triac switches will read high kilo ohm to infinity range) with the actuator within sense range. You will see the opposite reading for a normally closed switch.
Set range at 20 mega ohms (switches with triac output, set ohm range at 20 kilo ohms). For a normally open switch, the meter will read a high impedance with the actuator away. It will read very high to infinity range (triac switches will read high kilo ohm to infinity range) with the actuator within sense range. You will see the opposite reading for a normally closed switch.
Set range at 20 mega ohms (switches with triac output, set ohm range at 20 kilo ohms). For a normally open switch, the meter will read a high impedance with the actuator away. It will read very high to infinity range (triac switches will read high kilo ohm to infinity range) with the actuator within sense range. You will see the opposite reading for a normally closed switch.
Set range at 20 mega ohms (switches with triac output, set ohm range at 20 kilo ohms). For a normally open switch, the meter will read a high impedance with the actuator away. It will read very high to infinity range (triac switches will read high kilo ohm to infinity range) with the actuator within sense range. You will see the opposite reading for a normally closed switch.
Set range at 20 mega ohms (switches with triac output, set ohm range at 20 kilo ohms). For a normally open switch, the meter will read a high impedance with the actuator away. It will read very high to infinity range (triac switches will read high kilo ohm to infinity range) with the actuator within sense range. You will see the opposite reading for a normally closed switch.
