SCR Safety Relays (Previous Generation)

IDEM’s range of SCR Safety Relays are designed in accordance with EN60204-1 for safety circuits and they may be used in conjunction with Mechanical Interlock Guard Switches, Emergency Stop Switches, Non Contact Guard Switches or Light Curtains to achieve redundant monitoring and fault checking up to PLe Category 4 ISO13849-1.

When dual circuit monitoring is used they can check the switch contacts for correct opening and re-closing, monitor for wiring short circuits and can be configured to check for correct opening of external machine contactors. For applications requiring time controlled delays after opening of the guard switch, versions with time delayed output contacts are available (variable 0 to 30 seconds).

IDEM’s SCR range features:

Dual force guided relay output contacts -internally monitored – high current outputs up to 8A.

Up to PLe Category 4 to ISO13849-1 (EN954-1) and SILCL3 EN62061.

Single or Dual Channel input with LED indication of input status.

Feedback loop for monitoring contactors.

Short circuit and earth fault monitoring.

DIN Rail Mounting – either 22mm or 44mm wide housings.

Automatic or Manual start.