1S9STOEN_26-5-17_ADL300_STO_STO Pag. 30/30
With respect to above prescriptions we can notice that:
1. System Control Unit uses both ENABLE and SAFETY ENABLE signals by means of two
different relays (K2M, K3M)
2. SCU monitors both feedback relays: SAFETY OK and CONTACTORLESS OK (which is
configured as Digital Inp Monitor ENHW)
3. Any time Motor comes to a stop SAFETY OK relay and CONTACTORLESS OK shall be
monitored by SCU, switch from open status to closed status. In case of unexpected relay
status (SAFETY OK, CONTACTORLESS OK) is found SCU will not issue a restart (K2M,
K3M, Emergency Failure remain open) until condition is cleared.
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