Operation
Operating Manual PNOZ mml1p
1002233-EN-06
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7
Operation
When the supply voltage is switched on, the PNOZmulti copies the configuration from the
chip card.
The PNOZmulti safety system is ready for operation when the "POWER" and "RUN" LEDs
on the base unit and the "READY" LED on the PNOZ mml1p are lit continuously.
7.1
LED indicators
Legend
LED on
LED flashes
LED off
LED
LED status
Meaning
Power
No supply voltage
Gree
n
Supply voltage is present
Ready
Gree
n
The unit is ready for operation
The unit is not ready for operation
Fault
Red External fault
Red Internal fault
No fault
Link
Yel-
low
Connection available to another link module
No connection available to another link module
7.2
Fault detection
Each base unit contains information about
}
its own link module (in order, defective, no supply voltage)
}
the status of the connection (yes, no)
}
the operating status of the connected base unit (RUN, STOP)
When the connection is interrupted, the base units switch the virtual inputs to zero. The
base units remains in a RUN condition.
Defective link module:
}
The corresponding base unit switches to a STOP condition. The virtual outputs on the link
module are set to zero.
}
The connected base unit remains in a RUN condition.
