"The servo PWM input controls motor speed and direction. The digital signal must meet the timing
and voltage requirements listed in the MDL-BDC24 specifications. The center pin (+) has no
internal connection. Because the signal is optically isolated, both the signal (S) and GND (-) pins
must be connected to the signal source.
The servo-style PWM input is optically isolated. All other control inputs are non-isolated and are
referenced to the power supply (-)."
Where's the "MDL-BDC24 specification?
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