DUPLOMATIC E.M.DDC4-400V/RK RELEASE 1.9 07-09
EM DDC4-400-RK-0709gb.doc 18
EXTENDED ALARM DESCRIPTION/TROUBLESHOOTING
In case an alarm is present on ALBITxx signals, the ALPOSxx signals give the sub-group code to better identify
the cause of the problem.
The I/O board is provided by LED to give the status of each output.
ALARM Description
1.0
Fault in resolver supply:
-short on resolver line.
If, after the short removal, the alarm persist, replace the controller.
1.1
Fault in three phase supply when the motor is enabled:
- check the 400 V supply.
If the voltage is OK and the alarm persist, replace the controller.
1.2,1.3,
1.4,1.6
Fault on internal auxiliary supply.
If the alarm persist, replace the controller
1.5
Fault on internal 24 V supply to switches:
-short on switches cable or defective switch.
If the alarm persist, replace the controller
2.0
Overvoltage on three-phase line:
-if random, ensure that three phase supply is under specification and in case provide additional stabilizers
If the alarm persist, replace the controller
2.1
Overvoltage reached during dynamic braking:
-the inertia loaded on disc is too high: try to reduce the inertia.
If the alarm persist, replace the controller.
3.0
Motor Overcurrent.
-short between servomotor wires
-short between servomotor wire and ground
-wrong resolver connection.
-poor resolver cable shielding.
To avoid thermal overload on power bridge due to repeated alarms, it is necessary to switch off the controller to clear the
alarm.
3.1
Motor Overload.
-inertia loaded on disc exceeds limits (check that the turret is set to the right inertia value by the PTAB03 signal - LK3 on
connection box);
-the unbalanced load exceeds limits;
-crash during disc rotation;
-zero switch or zero cam are not well positioned (if the alarm happen when the turret is locking at the reference cycle
completion);
-wiring to the motor or to the resolver is defective.
-mechanical hardening
3.2
Position controller error exceeds limits:
-inertia loaded on disc exceeds limits (check that the turret is set to the right inertia value by the PTAB03 signal - LK3 on
connection box);
-the unbalanced load exceeds limits;
-the tool touch the piece slowly during disc rotation;
-the wiring to the resolver is defective.
-mechanical hardening
3.3
The time limit to execute the cycle has been reached:
-the tool touch the piece slowly at the end of the cycle so cannot reach the final position;
3.4
The reference cam is out of the expected position (after the reference cycle have been performed)
-reference switch is damaged or out of position
-reference cam is damaged or out of position.
-mechanical damage
3.5
The thermal detector of the motor :
-indexing frequency too high;
-defective motor;
-the thermal detector is not connected.
-wiring
3.6
Resolver fault.
-wrong wiring
-resolver excitation is off.
3.7
Ambient temperature on controller side too high.
3.8
Heatsink temperature too high.
3.11
General cycle timeout.
A problem not covered by other alarms has occurred.
4.0
The signal of the locking switch stays on during the unlocking phase:
-unlocking pressure too low;
-bad position of locking switch;
-bad switch connection/wiring (remote application mainly);
-the locking switch is defective.
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