Rockwell Automation 23P PowerFlex Digital DC Drive User Manual
Page 220
220
Rockwell Automation Publication 20P-UM001K-EN-P - July 2014
Chapter 4
Troubleshooting
Overspeed
25
2
The encoder or tachometer feedback indicated a speed that is
more than the value of Par
[Overspeed Val].
Remove the excessive load or overhauling conditions or increase the
value of Par
[Overspeed Val].
Note: Configurable with Par 585 [Overspeed Val].
Params Defaulted
48
2
User parameters have been reset to their default values.
Informational only.
Port 1-5 Adapter
71…75
2
The communication card has a fault.
Check the DPI device event queue and corresponding fault
information for the device.
Port 1-5 DPI Loss
81…85
2
The DPI port stopped communicating.
1. Check the HIM connection.
2. If adapter was not intentionally disconnected, check the wiring
to the port. Replace the wiring, port expander, adapters, control
board or complete drive as required.
3. If an adapter was intentionally disconnected and the bit for that
adapter in Par
[Logic Mask] is set to “1”, this fault will occur.
To disable this fault, set the appropriate bit in [Logic Mask] for
the adapter to “0.”
Power Failure
3
2
Possible causes include:
There is a fault in the 24V control board supply - the voltage is
below the permitted value. In most cases the cause is in the
external I/O wiring.
• Pull the plug-in I/O terminal blocks out of the control circuit
board and reset the drive via
[Fault Clear]. If there are no
other faults, check the I/O wiring for a short-circuit including the
cable shielding.
• Check fuses F1 and F2 on the switching power supply circuit
board (frame A size drives only have one fuse - F1). Replace as
necessary.*
• Check varistor fuses F1, F2, and F3 on the pulse transformer or
Transient Noise Filter circuit boards for Frame C size drives.
Replace as necessary.*
• If this fault occurs again, an internal fault may be present.
Contact your Rockwell Automation sales office.
*Note: See Control Power Circuit Protection Fuses on page
fuse sizing information.
The incoming voltage to the control power terminals (U2, V2)
is too low due to:
• The AC input voltage is too low
• There are poor cable connections.
• The fuse(s) on the switching power supply circuit board
have blown.
• Verify AC input power level.
• Check all connections.
• Check and replace the fuse(s) if necessary.
Resolver Error
93
2
An error was detected with the resolver signal while it was
configured for use by the drive.
1. Verify the resolver wiring.
2. Verify the resolver configuration in Pars
[Reslvr Type Sel],
[Resolver Config].
3. Verify the resolver power supply.
Rev End Limit
96
2
A reverse direction end limit has been reached. When the end
limit is reached the contacts open and a drive current limit
stop occurs.
This fault is always enabled when assigned to a digital input (see
Pars
). If digital limits (hardware signals) are in use, verify
that the digital inputs are connected to normally closed contacts.
Rev Over Travel
98
2
A reverse direction over travel signal has occurred, causing the
drive to coast to a stop.
This fault is always enabled when assigned to a digital input (see
Pars
Shorted SCR
89
2
A shorted SCR fault condition has been detected. This fault
can only occur when Par
[SCR Diag Test En], bit 1
“OpenSCR Tst” is set (= 1). The SCR (or SCR pair) that caused
the fault are shown in Par
Replace failed SCR device(s).
Fault Name
Number Type
(1)
Description/Possible Cause(s)
Action(s)
IMPORTANT
Remove power from the drive before removing the I/O terminal blocks and/or
fuses.