mps100 motor protection system advantages additional information

mps100 motor protection system advantages additional information
MPS100
MPS100
MOTOR PROTECTION
SYSTEM
The MPS100 Motor Protection System is a microprocessor based digital
relay which provides comprehensive motor protection including metering,
communications, data recording and diagnostics.
ADVANTAGES
• Extensive protection package including 21 protective functions.
Includes Current and Thermal based protection and 2 external fault
contact inputs.
• Programmable output functions and “Time to Trip” indications enable
operator intervention for abnormal conditions and controlled reset.
• Easy local interactions with front panel display and manual interface.
Remote communications via RS485 serial link, with Modbus™ protocol.
• Compact, panel mount package.
• UL, C-UL component recognized.
APPLICATION
Page 2
FUNCTIONAL
DESCRIPTION
Pages 3-5
CONNECTIONS
Page 4
WINDOWS® SOFTWARE
Interface for setting and communicating with Basler protection products
Request BESTCOMS™ for MPS100, specify Windows® 3.1 or Windows® 95/NT
ADDITIONAL INFORMATION
INSTRUCTION MANUAL
Request publication 9-3254-00-990
SPECIFICATIONS
Page 6
ORDERING
INFORMATION
Page 8
MODBUS™ INSTRUCTION MANUAL
Request publication 9-3254-00-991
P. O. BOX 269 HIGHLAND, ILLINOIS, U.S.A. 62249 PHONE 618-654-2341 FAX 618-654-2351
UPC-1
4-98
MPS100
APPLICATION
The MPS100 Motor Protection System relay is suitable for low voltage, 3Φ induction motors. The MPS100 includes
all current based protection functions, along with thermistor. Additionally, monitoring functions and communications are included. While motors are very rugged and reliable when operating within their design limits, they are
usually operated close to these limits. However, most motors have minimal margins for operating under abnormal
conditions. A motor protection system is necessary to allow the motor to operate close to its limits and to protect
the motor from abnormal operating conditions. The MPS100 relays provide a comprehensive protection package.
PROTECTION
MONITORING AND COMMUNICATIONS
MPS relays include 21 distinct protective functions as
listed in Table 2. The relay can be configured for any of
these functions to operate any or all of the 4 output
contacts (Alarm, Trip, and 2 Auxiliary). Function reset
can also be configured, with Automatic, Front Panel,
and Programmable Logic Controller (PLC) reset
options. The relay will display a "Time to Trip" value,
which can enable corrective actions to prevent tripping. MPS relays include a Thermal Modeling algorithm, which computes the protected motor's thermal
capacity. The algorithm dynamically responds to
system conditions and includes both tripping and reset
characteristics.
MPS relays include a backlit Liquid Crystal Display
(LCD), along with a keypad to enable local interaction.
Users can apply settings, read parameters and retrieve
detailed trip and alarm data. An RS485 serial link is
also provided for remote interaction with the relay. This
terminal uses Modbus™ communications protocols.
The RS485 link enables multiple MPS relays to be
connected to a single host computer. The data values
available are listed in Table 1.
Data Type
Available Data
Measured Data
Phase and Ground currents, Thermistor resistance
Calculated Data
Statistical Data
Motor load (% of full load), Thermal capacity (%), Time to trip, Time to start, Unbalance Current (%)
Total running hours, number of starts, number of trips, last start time, last starting peak current
Fault Data
Last trip, Last alarm, Phase and Ground currents at time of trip
Table 1 - Real Time and Recorded Data
2
MPS100
FUNCTIONAL DESCRIPTION
CURRENT INPUTS
HUMAN MACHINE INTERFACE (HMI)
The relay monitors three phase and ground currents
individually. The ground current can be obtained from
a ground sensor (doughnut) or residually connected
current transformer. Nominal current input can be 1 or
5 amperes, based on style chart configuration.
The Human Machine Interface (HMI) includes a backlit
2-line LCD display and a keypad to allow local interaction with the relay. Likewise, all measured, calculated
and recorded data can be accessed. Three (3) LEDs
are also included to indicate the status of the relay and
the associated equipment.
THERMISTOR INPUT
MPS100 relays include 1 Thermistor input. The thermistor may be either positive temperature coefficient
(PTC) or negative temperature coefficient (NTC),
0.1Ω-30KΩ.
CONTACT INPUTS
A personal computer based program is available for
interaction with MPS relays. This provides logical,
screen-based, program for relay setup.
OUTPUTS
All MPS relays include 4 form C output relays. Each
relay can be programmed to operate on a combination
of protection functions.
Max. Start Time
Too Many Starts
Undercurrent Level 1
Undercurrent Level 2
Load Increase
Overcurrent Level 1 - Stall
Overcurrent Level 2 - Short
Thermal Level 1
Thermal Level 2
Unbalance Level 1
Unbalance Level 2
Phase Sequence
Ground Fault Level 1
Ground Fault Level 2
Comm. Port Failure
Internal Relay Failure
External Fault 1
External Fault 2
Thermistor Level 1
Thermistor Level 2
Unstable Current
The relay includes an RS485 communications port
which can be used for communications with a remote
computer. The communications link enables monitoring of the settings and available data.
GRAPHICAL USER INTERFACE (GUI)
2 Contact inputs are provided for connection of
external protective devices or for remote reset.
Function
REMOTE COMMUNICATIONS
SELF TESTS
MPS relays include extensive self test capabilities. This
includes power-up tests, manual tests and continuous
(background) tests. Any self test failure is reported as
an Internal Failure, which can be configured as an
alarm or trip condition.
ANSI Code
When Active
48
66
37
37
51L
51R
50
49/51
49/51
46
46
47
50G
50N
3
3
86 or 94
86 or 94
49R
49R
---
Starting
Starting
Running
Running
Running
Running
Always
Always
Always
Always
Always
Starting
Always
Always
Always
Always
Always
Always
Always
Always
Always
Range
1-250 Seconds
1-10 starts within 1-60 minute period
10-90% full load, 1-60 seconds
10-90% full load, 1-60 seconds
60-150% full load, 5 seconds
100-500% full load, 0.5-10 seconds
400-1200% full load, 0.0-0.4 second
50-99% of Thermal Capacity
100% of Thermal Capacity
50% of Unbalance Level 1, 1 second
10-40% full load, 20-120 seconds
n/a
1-100% of full load, 1-60 seconds
1-100% of full load, 0.0-2.0 seconds
3 consecutive parity/CRC errors
n/a - Relay Self Test
n/a - External Contact
n/a - External Contact
100 - 30kΩ, 2 seconds
100 - 30kΩ, 2 seconds
10% max. of full load, 1% min. of full load
Table 2 - MPS Protective Functions
3
MPS100
FUNCTIONAL DESCRIPTION, continued
Figure 1 - Typical Connections for MPS100
4
MPS100
FUNCTIONAL DESCRIPTION, continued
Figure 2 - Front Panel
5
MPS100
SPECIFICATIONS
CURRENT SENSING INPUTS
Sensing Method: True RMS, 0.5 msec sample time
Rated current: 1 or 5 ampere, depending on
style chart configurtion
Maximum continuous current: 3 x rated
1 Second rating: 30 x rated
Input Burden: ≤0.5 VA @ 5A (% A rated), ≤20mΩ
CONTACT SENSING INPUTS
Voltage level: Internally connected to control power no external voltage required
THERMISTOR INPUTS
Type: Positive Temperature Coefficient (PTC) or
Negative Temperature Coefficient (NTC) depending
on configuration and settings.
Impedance range: 0.1Ω-30KΩ
OUTPUT CONTACTS
Make and carry: 30A for tripping duty (5 cycles) @
250 Vdc, 5A continuous
Break: 0.4A @ 125 Vdc Resistive, (1A @ 48 Vdc)
0.3A @ 125 Vdc Inductive, (0.7A @ 48 Vdc),
L/R=0.04
AC POWER SUPPLY
Input: 88-125 Vac or 165-260 Vac, depending on style
selection
Power Consumption: ≤10 VA
ACCURACIES AND RANGES
Phase Current: ± (3% + 0.02 x nominal) below 0.9 x
nominal current
±1.5% between 0.9 and 1.5 x nominal
±5% above 1.5 x nominal
Current Range: 0.05 to 12 x nominal
Ground Fault Current: ±3% of full scale
Thermistor: ±0.1kΩ up to 5kΩ, ±3% above 5kΩ
6
ENVIRONMENTAL
Isolation
1500Vac for 1 minute between ground and:
• current inputs
• Power supply inputs
• Output terminals
Impulse
Meets IEC-255-4 (1976) & Amend #1 (1979)
Meets IEC-255-5 (1977)
5 kV common-mode test
5 kV transverse mode test
Surge Withstand
In accordance with: ANSI C37.90.1 (1990),
IEC 255-4 (1976) and Amend #4 (1979) Class III,
IEC 255-22-2 (1988) Class III
Oscillatory: 2.5kV peak
Fast transient: 4kV crest voltage
Radio Frequency Interference (RFI)
In accordance with ANSI C37.90.2
Electrostatic Discharge (ESD)
6kV contact, 8kV air discharge, in accordance with
Level 3 of EN61000-4-2, performance criteria A.
Ambient Temperature Range
0° to +50°C
WEIGHT
2.15 lbs.
CASE SIZE
5.665"h (143.89mm) x 3.750"w (95.25mm) x 4.665"d
(118.49mm)
MPS100
NOTES
7
MPS100
ORDERING
Specify a part number from the chart shown below.
ROUTE 143, BOX 269, HIGHLAND, ILLINOIS U.S.A. 62249
P.A.E. Les Pins, 67319 Wasselonne Cedex FRANCE
PHONE 618-654-2341 FAX 618-654-2351
PHONE (33-3-88) 87-1010 FAX (33-3-88) 87-0808
http://www.basler.com, info@basler.com
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