11
10
The following image appears in the display in
manual mode
:
To start or stop the controller in manual mode, press the enter key
This image appears in
external operation
:
If a request comes from the controller signal, the desired frequency is displayed and the controller
goes into operation.
6. Trouble-shooting and fault messages
Trouble-shooting:
Error-free running, for example 50% demand, is indicated with the following image:
A c t . f r e q . : 8 0 H z
M a n . f r e q . :
8 0 H z
A c t . f r e q . : 0 0 H z
N o m . f r e q . :
0 0 H z
A c t . f r e q . : 4 0 H z
N o m . f r e q . :
4 0 H z
If the following image should appear instead:
Check the following table of errors.
Search method for KR4/KR7 base controller
(no display is visible) test the fuse / check the mains voltage
Controller not enabled.
No fault message!
Test thermal contact/PTC-resistor. The fault message contact is activated when the overtemperature fault
occurs
Connection of thermal contact/PTC resistor to controller
A supply voltage of 24V = must be on terminals 5, 7 and 9 to earth (terminal 3 or 4). If no voltage is avail-
able, check control cables, possibly remove short-circuit.
A c t . f r e q . : 0 0 H z
C o n t r . b l o c k e d !
H i g h t e m p e r a t u r e
E r r o r ! M o t o r
E : 0 1 !
H a r d w a r e e r r o r :
