22
Indication of system malfunctions
Measuring channel 1:
Alarm
LED 1 is flashing slowly
Temperature sensor interrupted / short circuited,
excessively high temperature in temp. transmitter.
Measuring channel 2:
Alarm
LEDs 2 – 4 are flashing slowly
Temperature sensor interrupted / short circuited,
excessively high temperature in temp. transmitter.
Measuring channel 1:
Alarm
LED 1 is flashing quickly
Communication between temperature transmitter and
control unit disturbed, high-frequency interference
Measuring channel 2:
Alarm
LEDs 2 – 4 are flashing quickly
Communication between temperature transmitter and
control unit disturbed, high-frequency interference
Indication of system malfunctions in the control unit
Malfunction
in control unit
LED bus status is flashing slowly Faulty communication in the CAN bus system.
HF interference
LED Power is flashing slowly
Bus supply voltage below 18 V.
System malfunctions
- continued -
Indication of system malfunctions
Fig. 10
Assignment of signal LED / push button / equipment:
LED 1 / Push button 1 / Output relay 1: Measuring channel 1
LED 2 / Output relay 2: Measuring channel 2, temperature control
LED 3 / Output relay 3: Measuring channel 2, temperature control
LED 4 / Push button 4 / Output relay 4: Measuring channel 2
Error message
Control unit and
bus status LED
Signal
LED
Power LED
Control keys
