Promag CON-485 Series Instruções de Operação Página 80

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9 Trouble-shooting Memo-Graph S
80 Endress+Hauser
9.3 Searching for and eliminating faults
Problem Cause Remedy
Analogue input shows “---” The signal lines are incorrectly connected or not connected. Please check the connections.
The input signal does not correspond to the configured sig-
nal.
Please check the input signal and the configuration.
The sensor is defective. Please check the input signal and replace the sensor.
Display does
not function
No LED lights
up
No power Please check the power supply and the mains supply.
Device fuse defective Please check the fuse on the power unit (1 A time-lag)
(see Chapter 9.4.1)
Power unit or CPU defective Please replace power unit or CPU (depending on
fault).
LED lights up Display defective Please replace the back lighting
CPU defective Please replace the CPU
ATA flash drive does not function ATA flash drive defective Please replace the ATA flash drive
CPU defective Please replace the CPU
Digital input does not function Incorrect connection Please check the connection and the digital input cir-
cuit.
Incorrect configuration Please check the digital input configuration.
Digital I/O board defective Replace digital I/O board.
Power unit defective Replace power supply board
Relays do not function Incorrect connection Please check the connection and the digital input cir-
cuit.
Incorrect configuration Please check the digital input configuration.
Digital I/O board defective Replace digital I/O board.
Multifunction output board defective Replace multifunction output board
Power unit defective Replace power supply board
Analogue outputs do not function Incorrect connection Please check the connection and the analogue output
circuit.
Incorrect configuration Please check the analogue output configuration.
Power unit defective Replace power supply board
Multifunction output board defective Replace multifunction output board
Configuration is locked Not logged in Please log in
Rear wall checking is active Only the administrator can log in.
Light barrier is defective Replace power supply board.
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