Protection Relays and Controls
Motor Protection–Advanced
MPS SERIES (PGR-6300)
Motor Protection System
Description
The MPS Motor Protection System monitors voltage, current,
and temperature to provide a comprehensive package of
22 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.
1
Operator Interface (MPS-OPI)
1
g
Large, bright, 4 x 20 vacuum-fluorescent display
Display metered values
Access set points
Powered by Control Unit
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
g
g
g
g
g
g
g
Control Unit (MPS-CTU)
2
g
2
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
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Simplified Circuit Diagram
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g
PHASE CT
GF CT
A
B
g
PHASE CT
PHASE CT
g
M
g
RTD x 8
g
RS-485 network communications (Standard)
DeviceNet™, Profibus®, or Ethernet communications available
g
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ꢀPꢄꢂCꢅꢁ
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L1
L2
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2
Accessories
A
B
ꢀPꢄꢂꢉPꢃ
Phase CurrentTransformers
Phase CTs are required to detect phase
currents.
1
ꢀꢉꢂerator ꢁnterfaceꢅ
Ordering Information
ORDERING NUMBER COMMUNICATIONS
Ground-Fault CurrentTransformer
Required zero-sequence current transformer
detects ground-fault current. Available with 5-A
and 30-A primary ratings for low-level pickup.
MPS-CTU-01-00
MPS-CTU-02-00
MPS-CTU-03-00
MPS-CTU-04-00
RS-485
RS-485 & DeviceNet™
RS-485 & Profibus®
RS-485 & EtherNet/IP™ & Modbus® TCP
C
D
MPS-RTDTemperature Input Module
Optional module provides 8 inputs to connect
Pt100, Ni100, Ni120, and Cu10 RTDs.
ACCESSORIES
MPS-OPI-01-00
Phase CTs
REQUIREMENT
Recommended
Required
MPS-DIF Differential Current Module
Optional motor differential protection,
compatible with core balance and summation
current transformer connections.
Ground-Fault CT
MPS-RTD-01-00
MPS-DIF-01-00
SE-IP65CVR-M
Recommended
Optional
Optional
Optional
Rev: 4-B-061517
Based on Manual Rev: 6-F-022117
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