Rockwell Automation RELIANCE ELECTRIC SP500 - 9.2 Troubleshooting the Drive Using Fault Codes

9.2 Troubleshooting the Drive Using Fault Codes
Table 9.1 defines the fault codes for user-correctable faults, lists possible causes, and
suggests actions to take to correct the problem. All other faults require replacement
of the drive.
If a fault occurs, do the following:
Step 1. Try to clear the fault first by pressing the STOP/RESET key or asserting the
IET reset input (remote operation). If the fault reoccurs, continue with step 2.
Step 2. Refer to table 9.1 to identify the fault code and the possible causes.
Step 3. Perform the suggested corrective action(s).
Step 4. Clear the fault by pressing the STOP/RESET key or asserting the IET reset
input.
Table 9.1 — Drive Faults and Corrective Actions
FL = FUNCTION LOSS
The function loss input signal has been asserted (terminals 10 and 11).
Possible Cause Corrective Action
The external equipment connection to the function loss Check the external equipment wired to the
terminals has failed or is giving repeated stop requests. remote function loss terminals (10 and 11).
Refer to chapter 5.
Check the function loss input connections.
HU = HIGH BUS VOLTAGE
The DC bus is charged above the electronic trip threshold. Note that the fault will not clear until the bus falls
below the high bus level.
Possible Cause Corrective Action
The deceleration rate setting in F-02 is too fast. Decrease the deceleration rate in F-02. Refer to
chapter 8 for the F-02 parameter description.
Install the optional snubber resistor braking kit.
The drive was started into a forward-running load that Install the optional snubber resistor braking kit.
has a high inertia.
High input line. Verify that the AC input is within specification.
Install an isolation transformer if required.
Troubleshooting Reference 9-3