Tips And Troubleshooting; Drive Fault On Enable - National Instruments NI 9503 C Series Getting Started

Table 10. Stepper Drive (with Encoder) Additional FPGA Loop Descriptions
FPGA Loop Name
Position Loop
Encoder Loop
DIO Config (Port A)
DIO Config (Port B)

Tips and Troubleshooting

Drive Fault on Enable

If you receive fault 7180 when you enable the NI 9503, verify that the Rated Phase Current
setting is set to the appropriate value for your motor in Amps/Phase. Refer to Table 2 for
information about how to determine this value.
Complete the following steps to correct the setting:
1. Set the Rated Phase Current in the Axis Configuration dialog box and click OK when
you are done.
2. Right-click the axis in the Project Explorer window and select Deploy from the shortcut
menu to deploy the updated setting.
16 | ni.com | NI 9503 C Series Stepper Drive Modules and SoftMotion Module
Table 11.
When used with encoder feedback, the Position Loop
calculates interpolated positions, filters the encoder velocity
using the user-specified filter settings, and returns the
feedback position and filtered velocity feedback
information to the SoftMotion Engine.
The encoder loop uses the signals from the NI 9411 module
to generate position and velocity feedback. Position Capture
operations are included in the encoder loop to perform the
Index capture operation for use with the SoftMotion Find
Index routine.
The DIO Config Port A loop manages the DIO contained in
DIO Port A. This includes the Forward Limit, Reverse
Limit, Home Switch, and Digital Inputs 0 though 3 from the
NI 9423 C Series module, and Digital Outputs 0 through 3
that are sent to the NI 9472 C Series module.
The DIO Config Port B loop manages the DIO contained in
DIO Port B. This includes the Position Capture Input and
Position Compare Output from the NI 9401 C Series
module, Digital Inputs 4 though 7 from the NI 9423 C
Series module, and Digital Outputs 4 through 7 that are sent
to the NI 9472 C Series module.
Description