The MPS series Motor Protection System offers comprehensive voltage protection and starter control for medium voltage motors. The system monitors voltage, current, and temperature to provide a comprehensive package of protective functions. The MPS is a modular system with integrated protection, motor control, metering, and data-logging functions. This system is typically used to provide protection for three-phase low- and medium-voltage, medium to high-horsepower induction motors.

Operation
The Control Unit (MPS-CTU) is the core module. It can operate as a standalone unit or with the Operator Interface (MPS-OPI), RTD Modules (MPS-RTD), and Differential Module (MPS-DIF). The CTU can be programmed using the OPI or the communications network. Programmable inputs and outputs provide a flexible hardware platform and custom software can be easily loaded from a PC to the CTU’s flash memory.

Operator Interface (MPS-OPI)

Large, bright, 4 x 20 vacuum-fluorescent display

Display metered values

Access set points

Panel mount or attach directly to Control Unit

Remote mounting (1.2 km or 4000 ft maximum loop length)

1/2 DIN size

Hazardous-location certified

Control Unit (MPS-CTU)

Current inputs—5-A or 1-A secondary phase current transformers

Voltage inputs—up to 600 V without PTs

Earth-leakage input—5-A or 1-A secondary or sensitive transformer

Tachometer (high-speed pulse) input

8 digital inputs, 5 relay outputs, 1 analog input and output

24-Vdc supply for OPI and RTD modules, and for digital inputs

IRIG-B time-code input

1/2 DIN size, surface mount

RS-485 network communications (Standard)

DeviceNet™, Profibus®, or Ethernet communications available

Series: PMA-13

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MPS