The MODEL 110
MOTOR CONTROL is a half wave (four quadrant) regenerative unit that
controls the speed and direction of shunt wound or PM motors with
outputs ranging up to 1/8 HP.
These controls are designed to be easily interfaced to low level
analog circuitry. Analog input signals are opto-isolated from the
motor and power line circuits with a minimum isolation voltage of
1500 VDC. This eliminates crosstalk, ground loops, and other noise
The Model 110s isolated analog front end circuitry obtains
its DC operating power directly from the users system. Any
available voltage within the range of 4.5 VDC to 18 VDC may be used.
Current drain is 10 mA at 5 VDC and 25 mA at 15 VDC.
Motor output speed is in ratio proportion to the front end supply
voltage, with zero motor speed obtained when the analog input is
50% of the front end supply voltage. Full speed CW is obtained when
the input is at 70% of supply voltage and full speed CCW is obtained
when the analog input is at 30% of supply voltage. For example,
with a 5 VDC front end supply voltage, zero motor speed is obtained
at 2.5 VDC input, full speed CCW is at 1.5 VDC input and full speed
CW is at 3.5 VDC input. With a 15 VDC front end supply voltage,
zero motor speed is at 7.5 VDC input, full speed CCW is at 4.5 VDC
input. and full speed CW is at 10.5 VDC input. A failsafe circuit
de-energizes the motor if control power is not present.
The Model 110 operates from a nominal 115 VAC, 50/60 Hz power source,
and drives DC motors with 90 VDC rated armatures. A field circuit
can provide either 50 VDC or 100 VDC for shunt wound fields.
The units are of open frame construction. Connections to the digital
inputs may be made via a standard insulation displacement ribbon
connector, or by solder eyelets. Connections to the motor and power
line may use a plug-in screw terminal barrier strip, or solder eyelets.