5.TROUBLESHOOTING B-70315EN/02
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No. Cause of trouble Solution
1 Invalid parameter
setting
Check whether the values of PRM Nos. 15240,
15241, and 15242 are set as indicated in the
attached parameter table. If a different value is
set, set the value specified in the data sheets.
2 Anomaly of turbo
blower
Replace the turbo blower. The possible causes
of the faulty turbo blower are listed below. Check
them.
1) Damaged impeller
2) Failed bearing
The bearing may have failed as a result of one or
more of the following causes:
1) Deteriorated oil
2) Foreign matter in the bearing
So, always replace the oil at the recommended
intervals.
4 Invalid inverter setting Set the inverter correctly as explained in Section
7.7.
4 Inverter abnormal Replace the inverter.
ALM No.4101
OUT OF FREQUENCY 1
This alarm is issued, if a frequency reached signal is not received
within 120 seconds after the turbo blower is started.
Alarm output condition
This alarm is issued if a turbo blower is used as a fan (bit 5 of parameter
No.15003 = 1) and the frequency reach signal does not become "1"
within 120 seconds after the blower is started.
Related parameters
PRM.15003#5 TON Oscillator with a turbo blower
Related data
DGN.962#1 *AR1 Frequency reach signal
No. Cause of trouble Solution
1 Cable connection
abnormal
Check whether the cable is securely connected
to the inverter. If not, reattach the cable.
2 Invalid parameter
setting
Check whether the values of PRM Nos. 15240,
15241, and 15242 are set as indicated in the
attached parameter table. If a different value is
set, set the value specified in the data sheets.
3 Anomaly of turbo
blower
Replace the turbo blower. The possible causes
of the faulty turbo blower are listed below. Check
them.
1) Damaged impeller
2) Failed bearing
The bearing may have failed as a result of one or
more of the following causes:
1) Deteriorated oil
2) Foreign matter in the bearing
4 Invalid inverter setting Set the inverter correctly as explained in Section
7.7.
5 Inverter abnormal Replace the inverter.