SCANCLIMBER 65H Series, Instruction Manual

Page: 113 / 164

31
T r o u b l e s h o o t i n g
V115E_09.20
Series-65H Hoist Pos 4
Fault Tracing vacon • 67
24-hour s358 (0)40 837 1150 • Email: vacon@vacon.com
8 8 8 8
8. FAULT TRACING
When a fault is detected by the frequency converter control electronics, the drive is stopped and the
symbol
F together with the ordinal number of the fault, the fault code and a short fault description
appear on the display. The fault can be reset with the Reset button on the control keypad or via the
I/O terminal. The faults are stored in the Fault History menu, which can be browsed. The different
fault codes you will find in the table below.
The fault codes and their possible causes are presented in the table below.
Fault
code
Fault Possible cause
1
Overcurrent Frequency converter has detected too high a current (>4*I
n
) in the motor cable:
-
sudden heavy load increase
-
short circuit in motor cables
-
unsuitable motor
2 Overvoltage The DC-link voltage has exceeded the limits defined in Table 4-1.
-
too short a deceleration time
-
high overvoltage spikes in utility
3
Earth fault Current measurement has detected that the sum of motor phase current is not
zero.
insulation failure in cables or motor
5 Charging switch The charging switch is open, when the START command has been given.
-
faulty operation
-
component failure
6
Emergency stop Stop signal has been given from the option board.
7
Saturation trip Defective component
8 Unknown fault The frequency converter troubleshooting system is unable to locate the fault.
9 Undervoltage DC-link voltage is under the voltage limits defined in Table 4-2 of the Vacon NX
User's Manual.
Most probable causes:
-
too low a supply voltage
-
frequency converter internal fault
10
Input line
supervision Input line phase is missing.
11 Output phase
supervision Current measurement has detected that there is no current in one motor phase.
12 Brake chopper
supervision
-
no brake resistor installed
-
brake resistor is broken
-
brake chopper failure
13 Frequency
converter under-
temperature
Heatsink temperature is under –10
°
C
14 Frequency
converter
overtemperature
Heatsink temperature is over 90
°
C.
Overtemperature warning is issued when the heatsink temperature exceeds
85
°
C.
15 Motor stalled Motor stall protection has tripped.
16 Motor
overtemperature Motor overheating has been detected by frequency converter motor temperature
model. Motor is overloaded.
17
Motor underload Motor underload protection has tripped.
The fault codes and their possible causes are presented in the table below.
The alphanumeric control keypad features
9 push-buttons that are used for control of
the frequency conventer (and motor), pa-
rameter setting and value monitoring.