JUMO 709062 TYA 202 - Three-Phase Power Controller Operating Manual - Manual (Page 93)

2012-12-31/00561073 [SCR power switch TYA202] 91
8 Fault messages and alarms
Cyclical
display The symbols for input, subordinate control, and operating mode are displayed
alternately in the info line together with fault messages or information about
particular statuses.
v Chapter 8 "Fault messages and alarms"
Examples
Fault message Cause Remedy
Limit value monit.
Min. value reached The value has gone below the set limit value
for the min. alarm -
Limit value monit.
Max. value reached The set limit value for the max. alarm has
been exceeded -
Fault at connected
load Break or short-circuit of a load resistor.
v Chapter 6.1 "Detection of load
faults"
Replace defective heating ele-
ments.
Malfunction blown
fuse
(red LED fuse is lit) 1. Semi-conductor fuse defective
v Chapter 8.2 "Replacing a
defective semi-conductor
fuse"
2. No voltage at terminal U1 - Check wiring
- Check the line fuse for the
load circuit
3. The voltage supply for the control electron-
ics L1/N does not have the same phase angle
as the load circuit U1/U2. Check wiring
4. SCR in the master power controller defec-
tive (only with three-phase economy circuit
where nominal voltage < 230 V) The device must be returned to
JUMO for repair.
h Return the device
Malfunction
SCR breakage SCR defective The device must be returned to
JUMO for repair.
h Return the device
SCR short circuit SCR defective
Note:
Monitoring only functions when the load re-
sistance is so low that at least 10 % of the
power controller nominal current is flowing. The device must be returned to
JUMO for repair.
h Return the device
Caution!
High temperature Device temperature is higher than 100 °C
(excess temperature) - Ensure adequate ventilation
- Reduce load current
- Use power controller with
higher maximum load current