How It Operates
The MP Controller accepts set point and
feedback voltage inputs and provides
output signals until the feedback voltage
matches the predetermined set point.
The input set point signal can accept
standard analog signals (0-50mVdc,
0-10Vdc, 0-1mA, and 4-20mA) or digital
interface (RS-232, IEEE-488 or RS-422).
Multiple set points may be programmed
for variable speed (time proportioning),
ramping and variable dwell.
The AC feedback signal may be cong-
ured to be compatible to your output
voltage. The AC feedback signal can
be user-programmed to acept peak to
peak, average, or rms measurements as
required for your specic application.
In addition, the MP Controller provides
output signals for feedback and/or your
external monitoring or control.
Outputs include:
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Three form “C” contact closures
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Eight 5 volt logic signals.
MP Controller
Input Power 120/240/277 VAC
User Supplied
Computer or
Controller
Options
2, 4, & 8
Decrease
Motor Control
Increase
Display
Terminal
External Process
Control Set Point
Optional Staco
Variable
Transformer
5 AMP – 1000 A
Load
Option T
Peak to Peak, rms,
or Avera
4-20 mA
0-1 mA
0-50 mVdc
0-10 Vdc
Option S
Feedback (1 Standard) (2 or 3 Optional)
MP Series Controller
Advantages
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Intelligent Microprocessor based.
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Controls variable voltage transformer
regulation to within +/-0.5 volts.
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Multi-channeled unit enables control
of one, two or three individual variable
transformers or each phase of a three
phase unit.
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LCD display of feedback signals and
set points.
N
Available with standard analog
control signals (0-1 mA, 4-20 mA,
0-50 mVDC, 0-10VDC) for set point
and control functions.
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Available with standard bi-directional
RS-232, RS-422, IEEE-488 communi-
cation ports for set point and control
functions.
N
Multiple set points, ramping and
dwells available.
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User programmable to accept
peak-to-peak, rms, or average AC
feedback signals
www.stacoenergy.comAutomatic Voltage Regulator
The MP Series Microprocessor based
controller provides for an easy interface
of a computer or process controller to a
Staco mtor driven variable transformer.
The basic MP controller provides for
single channel feedback and control, and
is supplied with an internally mounted
set point potentiometer and a series of
programmable DIP switches, all within a
NEMA 12 style enclosure. The microcon-
troller is capable of operating in several
dierent operational modes with select-
able control ranges—high/low variable
transformer motor speed, output voltage
ramping, serial/analog set point selection
and feedback voltage range.
The controller oers unlimited interface
exibility through a series of standard op-
tions for “customization” to meet virtually
any application or special requirement.
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Heavy duty wall mountable
NEMA 12 style enclosure
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Control of the unit can be local,
at a remote location, or both.
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Battery back-up RAM retins data if
power is lost
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Microterminal available for remote or
stand-alone monitoring and control.
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Precise control of voltage ramping
through the use
of state of the art PWM technology.
N
Expanded memory allows custom-
ization to specic application
requirements.
N
Field upgradable—options can be in-
stalled in the eld as your needs change.
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Fast data transfer at 9600 baud.
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Automatic shut-down or alarm
with phase loss detection.
