IDEM VIPER SCR-i Safety Relays
IDEM VIPER SCR-i Safety Relays have been designed in accordance with EN60204-1 for safety circuits and they can be used in conjunction with mechanical interlock guard switches, emergency stop switches, non contact guard switches or safety light curtains to achieve redundant monitoring and fault checking up to PLe/Cat4 ISO13849-1.
When dual circuit monitoring is being 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 delay after opening of the guard switch, versions with time delayed output contacts are available (this is variable from 0 to 30 seconds).
Increased LED diagnostics have been incorporated into the design to show the status of input and output circuits and the reset (feedback) circuit.
The VIPER SCR-21-i safety monitoring relay with added diagnostics from IDEM have been designed and manufactured in the United Kingdom to meet the latest safety standards and offer enhanced LED diagnostics and simplified wiring.
Applications include the monitoring of safety interlock switches (guard door monitoring), emergency stop devices and sensors.
The SCR-21-i internal logic uses force guided relays to achieve cross monitoring, this ensures that a single fault does not lead to the loss of the safety function and that all faults are detected at or before the next safety demand.
FEATURES:
- Outputs 2NC contacts and 1NO contact.
- Feedback circuit to monitor external contacts.
- Easy diagnosis of status via visual indication of LEDs.
- Up to PLe, SILCL 3, Category 4.
- Monitored manual or automatic start.
- Single and dual channel operation.
- Output expansion units available to increase number of outputs.
If you are interested in finding out more about IDEM VIPER SCR-i Safety Relays, or any other IDEM products, please call 01244 288138 or email info@dbicontro.co.uk for more.
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