JUMO 709061/8-01-020, Operating Manual

Page: 106 / 125

8 Error messages and alarms
104 V1.04/EN/00561071 [Thyristor Power Switch TYA 201]
Slave: limit.
active high temp. Device temperature is higher than 105 °C.
Device too hot!
Output level is reduced.
(Limited power due to excess temperature)
- Ensure adequate ventilation or
provide for additional cooling
- Reduce load current
- Use power controller with high-
er maximum load current
Slave: supply volt.
too low Mains voltage is not within specified toler-
ance range
v
Chapter 10.1 "Voltage supply, load
current"
Check nominal voltage of the device
type
v
Chapter 1.3 "Order details"
Slave: supply volt.
too high Mains voltage is not within specified toler-
ance range
v
Chapter 10.1 "Voltage supply, load
current"
Check nominal voltage of the device
type
v
Chapter 1.3 "Order details"
Slave: Temp.drop in
mains voltage Dangerous temporary equal proportion for
transformer loads has been detected.
v
Chapter 5.1.5 "Monitoring"
Ensure stable mains supply.
Inhibit by
inhibit input A firing pulse inhibit has been triggered via
a potential-free contact.
No power from the power controller.
v
Chapter 3.3 "Connection dia-
gram"
Open contact between terminal 7 and
8 at screw terminal X_2.
Inhibit by
ext. inhibit The firing pulse inhibit has been triggered
via an interface.
v
Interface manual "Ext. inhibit"
Soft start phase This message appears in the display until
the soft start has been completed.
v
Chapter 5.1.2 "Power controller"
-> Soft start duration
Current limiting
active The required output level causes an exces-
sive load current and is limited to the set
value.
v
Chapter 5.1.2 "Power controller"
"Current limiting" on page 61
Resistance
limitation active The desired output level leads to current/
voltage values that exceed the set load re-
sistance. The output level is limited to the
admissible resistance to prevent overheat-
ing.
v
Chapter 5.1.2 "Power controller"
-> Resistance limit value
Error message Cause Remedy