User Manual

Table Of Contents
Power Connections
Advanced Digital Motor Controller User Manual 21
SECTION 1
Connecting
Power and
Motors to the
Controller
This section describes the controller’s connections to power sources and motors.
This section does not show connector pin-outs or wiring diagram. Refer to the datasheet
for these.
Important Warning
The controller is a high power electronics device. Serious damage, including fire,
may occur to the unit, motor, wiring, and batteries as a result of its misuse. Please
follow the instructions in this section very carefully. Any problem due to wiring
errors may have very serious consequences and will not be covered by the product’s
warranty.
Power Connections
Power connections are described in the controller model’s datasheet. Depending on the
model type, power connection is done via wires, fast-on tabs, screw terminals or copper
bars coming out of the controller.
Controllers with wires as power connections have Ground (black), VMot (red) power ca-
bles and a Power Control wire (yellow). The power cables are located at the back end of
the controller. The various power cables are identified by their position, wire thickness and
color: red is positive (+), black is negative or ground (-).
Controllers with tabs, screw terminals or copper bars have their connector identified in
print on the controller.
Contents
Power Connections 21
Controller Power 22
Controller Powering Schemes 23
Mandatory Connections 24
Connection for Safe Operation with Discharged Batteries (note 1) 25
Use precharge Resistor to prevent switch arcing (note 2) 25
Protection against Damage due to Regeneration (notes 3 and 4) 25
Connect Case to Earth if connecting AC equipment (note 5) 25
Avoid Ground loops when connecting I/O devices (note 6) 25
Connecting the Motors 26
Single Channel Operation 27
Power Fuses 27
Wire Length Limits 27
Electrical Noise Reduction Techniques 28
Battery Current vs. Motor Current 28
Measured and Calculated Currents 29
Power Regeneration Considerations 30
Using the Controller with a Power Supply 31