Rockwell Automation 20P PowerFlex Digital DC Drive - Manual (Page 210)

210 Rockwell Automation Publication 20P-UM001I-EN-P - February 2013
Chapter 4 Troubleshooting
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