Error Messages And Alarms - JUMO 709061/8-01-032 Operating Manual

Cyclical
appearance
Examples
Error message
Limit value monit.
Min. value reached
Limit value monit.
Max. value reached
Fault at connected
load
Malfunction
Blown fuse
(red LED fuse is lit)
Malfunction
thyristor breakage
Thyristor
short circuit
Caution!
High temperature
V1.04/EN/00561071 [Thyristor Power Switch TYA 201]
The symbols for input, subordinate control loop, and operating mode are dis-
played alternately in the info line together with error messages or information
about special statuses.
v Chapter 4.1.2 "Appearance of measured values"
Cause
The value has dropped below the set limit
value for the min. alarm
The set limit value for the max. alarm has
been exceeded
Break or short-circuit of a load resistor.
v Chapter 6 "Special device func-
tions"
1. Semiconductor fuse defective
2. No voltage at terminal U1
3. The voltage supply for the control elec-
tronics L1/N does not have the same
phase angle as the load circuit U1/U2.
4. Thyristor in the master power controller
defective (only with three-phase economy
circuit where nominal voltage < 230 V)
Thyristor defective
Thyristor defective
Note:
Monitoring only works when the load resis-
tance is so low that at least 10 % of the
power controller nominal current is flowing.
Device temperature is higher than 100 °C
(Excess temperature)

8 Error messages and alarms

Remedy
-
-
Replace
ments.
v Chapter 8.2 "Replacing a defec-
tive semiconductor fuse"
- Check wiring
- Check the wire fuse for the load
circuit
Check wiring
The device must be returned to JUMO
for repair.
h Return the device
The device must be returned to JUMO
for repair.
h Return the device
The device must be returned to JUMO
for repair.
h Return the device
- Ensure adequate ventilation or
provide for additional cooling
- Reduce load current
- Use power controller with high-
er maximum load current
defective heating ele-
101