EMERGENCY SHUTDOWN

Emergency Shutdown

• Power Off Emergency Button (POEB) (I 33.1)

POEB button is a NC switch which is on when no emergency.

• PLC Nodes 2 – 5 & 7- 8 (DB1.dbx0.3, DB1.dbx0.4, DB1.dbx0.5, DB1.dbx0.6,

DB1.dbx1.0, DB1.dbx1.1) & PLC Node 10 (DB1.dbx1.3 – Bearing Temp Option

Only)

These signals indicate that each of the ET200 I/O stations have communication with the S7 416 CPU and have fully functioning I/O. The following will cause a node to be faulty: • Profibus cable connection faulty • Profibus terminating resistor switch set incorrectly • No 24 V power supplied to the node. • An IM 153 interface module needs replacing

• PLC Nodes 2 – 7 Analog I/O (DB1.dbx3.4, DB1.dbx3.5, DB1.dbx3.6, DB1.dbx3.7,

DB1.dbx4.0, DB1.dbx4.1) & PLC Node 10 (DB1.dbx4.2 – Bearing Temp Option

Only)

These signals indicate that the analog cards of each of the 6 listed I/O stations are

OK. If an analog card is faulty or 24 V supply is not connected, the signal will indicate not OK. (NOTE: after problem has been fixed it may be necessary to cycle the

S7 CPU 416 to STOP mode and back to RUN mode to make the fault disappear.

Shovel must be taken out of service first.)