Konecranes CU1 - APPENDIX 2: CU1 Error Messages

26.03.1996 • KHH SEENXL13A
•For Authorized KCI Service Agents Only•
KCI Hoists Corporation reserves the right to alter or amend the above information without notice
Page 27
XL
Service Manual
CU1
KCI KONECRANES GROUP
KCI HOISTS CORPORATION
APPENDIX 2:
APPENDIX 2:APPENDIX 2:
APPENDIX 2: CU1 error messages
CU1 error messagesCU1 error messages
CU1 error messages
Some error messages are shown continuously and other messages are displayed for a
moment only (i.e. as long as the failure is active).
In the case that two error messages are displayed one after another, notice the first
one displayed because it may be the most relevant.
Err_0: SETUP ERROR - A wrong code has been entered as password_1.
Normal action: Repeat the setup routine. Check the password code. If this does
not help, change the CU1.
Err_1: MEMORY ERROR, RESET - Memory content or check sum is not correct after a
reset or switching power on.
Normal action: Switch the power off for at least 5 seconds. If this does not help,
change the CU1.
Err_2: MEMORY ERROR, DRIVE - Memory content or check sum is not correct after a
drive (the CU1 is not able to correct the error).
Normal action: Switch the power off for at least 5 seconds. If this does not help,
change the CU1.
Err_3: MAINS UNDERVOLTAGE - CU1 detects that supply (control) voltage is too low
Normal action: Measure the 11 VAC power supply for the CU1 (CU1:5 and CU1:6).
It should be about 11 VAC (see Appendix 11). Measure the voltage at the CU1's
connector.
-If the 11 VAC voltage is out of range, check the hoist's control voltage and
the voltage at the CU1's transformer (O-T2).
-If the 11 VAC voltage is out of range during starting the hoisting
machinery, check the power supply cables.
-If the 11 VAC voltage is OK, change the CU1.
Err_4: HIOK OUTPUT CIRCUIT FAILURE (≥ P2.10) - The voltage detector circuit may be
faulty (the HIOK circuit checks that the CU1's hoist inhibit switch between CU1:9 and
CU1:10 operates correctly).
Normal action: If this error message appears repeatedly, change the CU1.