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Connecting Power and Motors to the Controller
36 AX3500 Motor Controller User’s Manual Version 1.9b. June 1, 2007
It will be safe to wire in parallel the controller’s outputs only after you have verified that
both outputs react identically to channel 1 commands.
Power Fuses
For low Amperage applications (below 30A per motor), it is recommended that a fuse be
inserted in series with the main battery circuit as shown in the Figure 10 on page 32.
The fuse will be shared by the two output stages and therefore must be placed before the
Y connection to the two power wires. Fuse rating should be the sum of the expected cur-
rent on both channels. Note that automotive fuses are generally slow will be of limited
effectiveness in protecting the controller and may be omitted in high current application.
The fuse will mostly protect the wiring and battery against after the controller has failed.
Important Warning
Fuses are typically slow to blow and will thus allow temporary excess current to flow
through them for a time (the higher the excess current, the faster the fuse will blow).
This characteristic is desirable in most cases, as it will allow motors to draw surges
during acceleration and braking. However, it also means that the fuse may not be
able to protect the controller.
Xilinx
Single Channel
Jumper "open"
MCU
Place solder ball to close
jumper and enable single
channel mode
FIGURE 13. Solder Jumper setting for Single Channel Operation
Xilinx
Jumper In for
Single Channel
MCU
FIGURE 14. Jumper setting for Single Channel Operation - RevB Hardware