JUMO 709061 TYA 201 - Single-Phase Power Controller Operating Manual - Manual (Page 95)

2012-12-01/00561071 [SCR Power Controller TYA201] 93
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 4.1.2 "Displaying measured values"
Examples
Fault message Cause Remedy
Limit value monit.
Min. value reached The value has gone below the set limit val-
ue 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 defec-
tive 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 elec-
tronics L1/N does not have the same
phase as the load circuit U1/U2. Check wiring
4. SCR in the master power controller de-
fective (only with three-phase economy cir-
cuit 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
resistance 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