Datasheet

Single Channel Wiring
SIM23xx Motor Controller Datasheet 5
Precautions and Optional Connections
Note 1: A backup battery is recommended to ensure motor operation with weak or discharged batteries.
Connect a second battery to the Power Control terminal via the SW1 switch.
Note 2: Use precharge 1K, 0.5W Resistor to prevent switch arcing.
Note 3: Insert a high-current diode to ensure a return path to the battery during regeneration in case the fuse
is blown.
Note 4: Users have the option to ground the VMot terminal when the controller is Off.It is recommended that
users do this if there is any concern that the motors could be made to spin and generate voltage in excess of
60V.
Note 5: Connect the controller’s bottom plate to a wire connected to the Earth while the charger is plugged in
the AC main, or if the controller is powered by an AC power supply.
Note 6: Be careful not to create a path from the ground pins on the I/O connector and the battery minus
terminal.
Single Channel Wiring
On the Single Channel SIM23xxS, each of the motor wires must be connected to both output terminals of the
same letter as shown in Figure 3, below. Use the Encoders of Channel 1 for operation.
U1
V1
W1
U2
V2
W2
U
V
W
FIGURE 3. Single Channel Wiring Diagram
Important Warning
The wiring shown in Figure 3 must be done only on the single channel version of the controller.
Paralleling the wires on a dual channel product will cause permanent damage. Verify that your
controller is an SIM2360S before you wire in this manner.
Use of Safety Contactor for Critical Applications
An external safety contactor must be used in any application where damage to property or personal injury can
occur due to uncontrolled motor operation resulting from a failure in the controller’s power output stage.