Parker Hannifin S.p.A S.B.C. Division
SLVDN User’s Manual
Page 177 of 181
18.Appendix E: Alarms
Code Alarm
0
Drive OK
1
Over Voltage on the D.C. Link.
Check the three-phase power line.
Check the break circuit and the braking resistor
2
Under Voltage on the D.C. Link.
Check the three-phase power line.
3
Over current.
Check for any mechanical blockage and make sure the
motor is the appropriate size for its current use.
Check the motor connections and for any phase-phase
or phase-ground short-circuits.
Check the machine speed and the service cycle.
Make sure a line trap isn’t connected to the motor!
4
Resolver.
Check the connections of the resolver and the
connectors on both sides (drive-motor).
5
PTC motor alarm
-Check the PTC connection cable.
-If the alarm persists, disable the drive, remove power
from the motor and de-energize the drive (24VDC).
Remove the PTC connector from the drive, short –
circuit the PTC (connecting PTC+ and PTC-) on the
same drive terminal block.
Supply power to the drive (24VDC). If the alarm
persists, either the drive is in fault state, or the PTC on
the motor is in fault state. (at the end of the test,
remove the PTC short-circuiting connection).
6
Drive Over Temperature.
Check the cooling fans and for any restrictions to air
flow.
Check the breaking cycle.
Check the environmental temperature of the electrical
control panel where the drive is installed, as well as
the external room temperature.
7
External alarm
8
Auxiliary alarm
10
check sum PLC
11
check sum parameters
14
Brake overload.
Braking resistance use overload
15
Default parameter
17
Calibration error
22
Ambient over temperature
Check the temperature
24
Braking transistor protection
Short-circuit braking resistance. If an external braking
resistor is connected to the drive, check the resistor
statures and wiring. Can be only reset at the next
power on.
25
Feedback speed error
Check the selection of feedback and the connection.
“….”
Limitation of current (I
2
T)
The drive goes in I
2
T mode due to an overload (it
required more current that was available).
Check:
The cables between motor and
SLVD-N
(there should
be no inverted phases). Take special care with motors
with terminals rather than the connector: it’s easy to
make a mistake. Adhere strictly to the wiring
diagrams.