User Manual

Rockwell Automation Publication 20P-UM001K-EN-P - July 2014 229
Troubleshooting Chapter 4
The motor reaches maximum speed immediately
Testpoint Codes and
Functions
Select a testpoint with Par 1381 [TestPoint Sel]. Values can be viewed with Par
1382
[TestPoint Data].
Drive Symptom Action
The motor accelerates to maximum speed and cannot be
controlled.
Check the analog input voltage and speed reference values:
• Parameters 1404 [Analog In1 Value], 1405 [Analog In2 Value], 44 [Speed Ref A] and 48 [Speed Ref B]
• Check the setting of switch S9 and parameter 71 [Anlg In1 Config], S10 and 76 [Anlg In2 Config] or S11 and 81
[Anlg In3 Config].
The feedback device, encoder, resolver, or DC analog tachometer is not connected/configured, incorrectly connected
or has failed.
• Change parameter 414 [Fdbk Device Type] to 3 “Armature” to test the encoder or DC analog tachometer feedback.
No.
(1)
(1) Enter in [TestPoint Sel].
Description Values
Minimum Maximum Default
566 Rx count
0 65535 0
567 Tx count
568 BusLoss count
569 Port 1 Timeout
570 Port 2 Timeout
571 Port 3 Timeout
572 Port 4 Timeout
573 Port 5 Timeout
574 Port 6 Timeout
575 Internal gain of P188 (x100)
576 Internal gain of P189 (x100)
577 Internal gain of P190 (x100)
578 Internal gain of P191 (x100)
579 Internal gain of P192 (x100)
580 Internal gain of P193 (x100)