Digilent DMC60C 참조 매뉴얼 - 페이지 4

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Functional Description

1 Power Input Connections

The DMC60C's black and red wires, labeled GND and V+ on the housing, respectively, are used to

carry input power from a chosen power source to the DMC60C. The black wire is to be connected to

the ground or negative terminal of the power source. The red wire is to be connected to the positive

terminal of the power source. When powering the DMC60C via a Power Distribution Panel (PDP),

this typically means that the DMC60C's red wire should be connected to the PDP's red terminal and

the DMC60C's black wire should be connected to the PDP's black terminal.

The DMC60C does not feature output short protection, and as such, shorting the output leads can

result in catastrophic failure. Therefore it is recommended that a 40 Amp breaker (or fuse) be placed

in line with the DMC60C's positive input lead (red wire).

The DMC60C does NOT include input reverse polarity protection. Reversing the polarity of the

inputs may result in permanent damage to the DMC60C.

2 Motor Output Connections

The DMC60C's green and white wires, labeled M- and M+ on the housing, respectively, are used to

carry a control signal from the DMC60C to a connected motor. The green wire is to be connected to

the negative lead of the motor. The white wire is to be connected to the positive lead of the motor.

The stall current associated with the motor may be very high. Therefore it is recommended that

these connections be made through crimped connectors or by soldering the leads directly together.

If the DMC60C output leads are not long enough to reach the motor then they may be extended. It is

recommended that 12 AWG (or thicker) stranded wire be used and that the wires be soldered

directly together.

3 Input Signal Cable Connections

The DMC60C can either be controlled by CAN signals applied on the input signal cables, or by PWM

input signals applied via one of the two input signal cables. Usage of the CAN protocol to control the

DMC60C is outside of the scope of this manual. Take a look at one of the guides on the

DMC60C

Resource Center

for more information on how to use the CAN protocol to control the DMC60C.

The DMC60C continually measures the positive pulse width of the PWM Input Signal applied to the

Input Signal Cable and maps it to an output voltage, or duty cycle. By default, a positive pulse width

of 1.0 milliseconds corresponds to 100% duty cycle in the reverse direction (current flow from M- to

M+), a positive pulse width of 2.0 milliseconds corresponds to 100% duty cycle in the forward

direction (current flow from M+ to M-), and a positive pulse width of 1.5 milliseconds (+/- 4%)