88 • vacon
CONTROL KEYPAD
7
Fault
code
Fault
Possible cause
Correcting measures
52
Keypad
communication
fault
The connection between the control
keypad (or NCDrive) and the AC drive is
broken.
Check keypad connection and possible
keypad cable.
53
Fieldbus fault
The data connection between the fieldbus
Master and the fieldbus board is broken
Check installation.
If installation is correct contact the
nearest Vacon distributor.
54
Slot fault
Defective option board or slot
Check board and slot.
Contact the nearest Vacon distributor.
56
PT100 board
temp. fault
Temperature limit values set for the
PT100 board parameters have been
exceeded
Find the cause of temperature rise
57
Identification
Identification run has failed.
Run command was removed before
completion of identification run.
Motor is not connected to AC drive.
There is load on motor shaft.
58
Brake
Actual status of the brake is different
from the control signal.
Check mechanical brake state and
connections.
59
Follower
communication
SystemBus or CAN communication is
broken between Master and Follower
Check option board parameters.
Check optical fibre cable or CAN cable.
60
Cooling
Coolant circulation on liquid-cooled drive
has failed.
Check reason for the failure on external
system.
61
Speed error
Motor speed is unequal to reference
Check encoder connection.
PMS motor has exceeded the pull out
torque.
62
Run disable
Run enable signal is low
Check reason for Run enable signal.
63
Emergency
stop
Command for emergency stop received
from digital input or fieldbus
New run command is accepted after
reset.
64
Input switch
open
Drive input switch is open
Check the main power switch of the
drive.
Table 7-4. Fault codes
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