| The
Motor Drive Controller (MDC) regulates
motor speed by varying an isolated DC
control signal to a motor drive system.
There are two modes of operation, Master
and Follower. Master Mode provides
control of a motor directly via
programmed speed setpoints in the MDC.
Regulation is maintained by a feedback
frequency to the MDC taken from the
motor shaft or a downstream shaft pulse
encoder. Follower Mode controls a
motor’s speed as a ratio to a second
motor’s speed or outside frequency
source. Ratio setpoints are programmed
into the MDC causing the motor to
"follow" the lead motor or frequency at
a fixed speed ratio. Master Mode has two
speed setpoints and two ramp setpoints.
Follower Mode has two ratio setpoints
and two ramp setpoints. Both modes share
a jog speed setpoint and a jog ramp
setpoint. All setpoints are retained in
non-volatile memory when the unit is
powered down.
The Motor
Drive Controller has the added feature
of allowing real time adjustment of the
Speed (Master Mode) or Ratio (Follower
Mode) setpoint while the unit is
operating a motor drive system. The
setpoint may be adjusted via the front
panel keypad using the "Up" or "Down"
arrow keys, or via 2 User Inputs
programmed for increment setpoint and
decrement setpoint.
The unit
is factory configured for an isolated 0
to 10 VDC drive output signal. The
output drive signal can be adjusted to
span from 0 to 15 VDC via an accessible
potentiometer. The drive output is
jumper selectable for an external
reference. To use the external
reference, the MDC is connected to the
drive in place of an external
potentiometer.
The Motor
Drive Controller has a light weight,
high impact plastic case with a clear
viewing window. The sealed front panel
meets NEMA 4X/IP65 specifications for
wash-down and/or dusty environments,
when properly installed. Plug-in style
terminal blocks simplify installation
and wiring change-outs. |
