Protection Relays and Controls
Motor Protection–Advanced
MPS SERIES (PGR-6300)
Motor Protection System
Description
PHASE CT
PHASE CT
PHASE CT
GF CT
M
RTD x 8
1
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)
g
g
(Current Input Module)
MPU-CIM
MPS-RTD
(Temperature
Input Module)
L1
L2
(Motor Protection Relay)
MPU-32
g
g
g
g
g
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
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
2
Control Unit (MPS-CTU)
2
g
g
Simplified Circuit Diagram
A
PHASE CT
PHASE CT
PHASE CT
g
g
g
g
B
GF CT
M
RTD x 8
MPS-RTD
g
g
g
g
L1
L2
MPS-CTU
(Control Unit)
2
C
(Temperature
Input Module)
Accessories
A
1
MPS-OPI
(Operator Interface)
Phase Current Transformers
Phase CTs are required to detect phase
currents.
Ordering Information
ORDERING NUMBER
COMMUNICATIONS
B
MPS-CTU-01-00
MPS-CTU-02-00
MPS-CTU-03-00
MPS-CTU-04-00
ACCESSORIES
RS-485
RS-485 & DeviceNet
™
RS-485 & Profibus
®
RS-485 & EtherNet
/IP™ & Modbus
®
TCP
REQUIREMENT
C
Ground-Fault Current Transformer
Required zero-sequence current transformer
detects ground-fault current. Available with 5-A
and 30-A primary ratings for low-level pickup.
MPS-RTD Temperature Input Module
Optional module provides 8 inputs to connect
Pt100, Ni100, Ni120, and Cu10 RTDs.
MPS-DIF Differential Current Module
Optional motor differential protection,
compatible with core balance and summation
current transformer connections.
MPS-OPI-01-00
Phase CTs
Ground-Fault CT
MPS-RTD-01-00
MPS-DIF-01-00
SE-IP65CVR-M
Recommended
Required
Recommended
Optional
Optional
Optional
Rev: 4-B-061517
Based on Manual Rev: 6-F-022117
D
© 2017 Littelfuse Protection Relays & Controls
Littelfuse.com/mps
Protection Relays and Controls
Motor Protection–Advanced
MPS SERIES (PGR-6300)
Motor Protection System
Features & Benefits
FEATURES
IEEE #
BENEFITS
Overload
Current unbalance/
Phase loss/Phase reverse
Overcurrent/Jam
Undercurrent
Ground fault
RTD temperature
Overvoltage
Undervoltage
Voltage unbalance
Phase differential
Dynamic thermal mode
Reduced overcurrent mode
Starter control
Metering
Data logging
Communications
Conformal coating
49, 51
46
50, 51
37
50G/N, 51G/N
38, 49
59
27
47
87
Extends motor life and prevents insulation failures and fires
Prevents overheating and extends motor life
Prevents catastrophic failures and fires and extends motor life
Detects low-level or no-load conditions
Prevents catastrophic failures and fires
Optional RTD temperature protection (MPS-RTD module) for
high ambient or loss of ventilation protection
Prevents stress to insulation
Prevents a start attempt when it will damage the motor
Detects unhealthy supply voltage
Provides sensitive protection for high-resistance winding faults
Provides protection through starting, running, overload, and cooling cycles
Minimizes Arc-Flash hazards during maintenance
Simplifies the installation by reducing component count
Displays the measured and calculated motor parameters
On-board 64-event recorder helps with system diagnosis
Remotely view measured values, event records & reset trips
Internal circuits are conformally coated to protect against corrosion and moisture
Wiring Diagram
MPS-OPI
OPERATOR
INTERFACE
(recommended)
Specifications
1
Protective Functions
(IEEE Device Numbers)
PHASE CURRENT
TRANFORMERS
(required)
GROUND-FAULT
CURRENT
TRANSFORMER
(required)
MPS-RTD
RTD MODULE
(optional)
A
B
MPS-DIF
PHASE
VOLTAGES
C
DIFFERENTIAL
MODULE
(optional)
D
33
22
30
29
27
26
23
22
20
......
17
60
56
53
I/0 MODULE
+
52
Input Voltage
Power-Up Time
Ride-Through Time
24-Vdc Source
AC Measurements
Frequency
Inputs
Output Contacts
Approvals
Communications
MPS-CTU
CONTROL UNIT
4-20 mA
ANALOG
INPUT
RELAY
OUTPUTS
RS-485
ANALOG
OUTPUT
4-20 mA
+
DIGITAL
INPUTS
1
2
5
......
16
35
......
37
39
40
43
......
51
2
Conformally Coated
Warranty 10 years
Mounting
(Control Unit)
(Operator Interface)
Overload (49, 51)
RTD temperature (38, 49)
Phase reverse (current) (46)
Unbalance (current) (46)
Overfrequency (81)
Underspeed (14)
Overcurrent (50, 51)
Starts per hour (66)
Jam
Phase loss (voltage) (47)
Underfrequency (81)
Overvoltage (59)
Ground fault (50G/N,
Differential (87)
51G/N)
Phase loss (current) (46)
Undercurrent (37)
Undervoltage (27)
Unbalance (voltage) (47)
Phase reverse (voltage) (47)
Failure to accelerate
Power factor (55)
65-265 Vac, 25 VA; 80-275 Vdc, 25 W
800 ms at 120 Vac
100 ms minimum
100 mA maximum
True RMS and DFT, Peak, 16 samples/cycle, and
positive and negative sequence of fundamental
50, 60 Hz or ASD
Phase current, Earth-leakage current, Phase voltage,
7 digital, tachometer, 1 analog
5 contacts — See Product Manual
CSA Certified, RCM (Australian), UL Recognized
Allen-Bradley
®
DFI and Modbus
®
RTU (Standard);
DeviceNet™, Profibus
®
, Ethernet (Optional)
Standard feature
Surface
Panel, Control-Unit mounted
CONTROL
POWER
© 2017 Littelfuse Protection Relays & Controls
Littelfuse.com/mps
Rev: 4-B-061517
Based on Manual Rev: 6-F-022117
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Littelfuse
:
PGR-6300-01-00 PGR-6300-01-00-CTU PGR-6300-02-00 PGR-6300-02-00-CTU PGR-6300-03-00 PGR-6300-03-
00-CTU PGR-6300-04-00 PGR-6300-04-00-CTU PGR-6300-OPI-01-00 MPS-DIF-01-00 MPS-CTU-03-00 MPS-OPI-
01-00 MPS-CTU-01-00 MPS-CTU-04-00 MPS-CTU-02-00 MPS-CTU-01-01
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