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GE Power Management
269Plus Motor Management Relay
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GE Power Management
269Plus Motor Management Relay
Offering optimum motor protection in situations
where other relays cannot, the 269 Plus Motor
Management Relay possesses the unique feature of
its ability to learn individual motor
parameters, giving it the flexibility to adapt to
each application by learning values of motor
inrush current, negative sequence current K
factor, cool down rates, start thermal capacity
and acceleration time.
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GE Power Management
269Plus Motor Management Relay
Presentation Overview

• Applications

• User Interface

• Metering and
• Monitoring

• Inputs and
• Outputs

• Protection and
• Control

• Typical Wiring

• Ordering

• Communications

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GE Power Management
269Plus Motor Management Relay
Applications
The 269 Plus is a microprocessor based product
designed to provide complete and accurate
protection for industrial motors and their
associated mechanical systems.

• Three phase AC motors

• Mechanical system protection

MAIN
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GE Power Management
Applications
FUNCTIONAL BLOCK DIAGRAM
Legend
MAIN
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GE Power Management
Applications
DEVICE
PROTECTION
14 Speed Device 37 Undercurrent/Minimum
Load 38 Motor/Load Bearing Overtemperature 46
Unbalance - Negative Sequence 48 Multiple
Starts/Locked Rotor 49 Stator Winding
Overtemperature 49/51 Overload
Curves/FlexCurves 50 Short Circuit/Mechanical
Jam/Rapid Trip 50G/51G Zero Sequence Ground
Fault 50N/51N Residual Ground Fault 52b
Breaker 74 One Alarm Relay, Two Auxiliary
Relays 86 Main Trip Latched Relay Auxiliary
Relay No. 1 Auxiliary Relay No. 2 87
Differential Relay Contact Input 66 Starts per
hour 47 Volts Phase Reversal (Meter Option) 27
Undervoltage (Meter Option) Frequency (Meter
Option) 55 Power Factor (Meter Option)
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GE Power Management
269Plus Motor Management Relay
Protection

• Stator winding
• overtemperature
• Bearing
• overtemperature
• Multiple starts
• Overloads
• 8 standard overload
• curves

• Phase reversal
• (meter option)

• User defined overload
• FlexCurveTM

• Ground fault

• Locked rotor

• Undercurrent

• Rapid trip/mechanical jam

• Variable lock out time

• Unbalance/single phasing

• Learns individual
• motor parameters

• Short circuit

MAIN
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GE Power Management
269Plus Motor Management Relay
Start and Running

• Motor is protected under both Acceleration and
  Running
• conditions

The 269 Plus can trigger an alarm or trip the
motor based on

• normal acceleration time
• number of starts per hour
• multiple starts
• time between starts
• motor overload conditions

MAIN
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GE Power Management
Protection
Overload

• One of eight standard overload curves may be
  programmed based on motor manufacturers locked
  rotor time capability.
• Alternately, the user may program in a custom
  curve using the built-in FlexCurve function.

View 8 Standard Overload Curves
MAIN
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GE Power Management
Protection
8 Standard Overload Curves

• The motors service factor value is entered as
  the overload pickup level

Full Load Current Setpoint
Multiples of Full Load Current Setpoint
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GE Power Management
Protection
FlexCurve
6500 HP, 13800 Volt INDUCED DRAFT FAN MOTOR
When a FlexCurve is programmed, the 269 Plus
develops a smooth custom overload curve within a
selected range.
FlexCurve can be used to protect motors which
have different rotor and stator damage, allowing
total motor design capacity with complete
protection.
Multiples of Full Load Current Setpoint
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GE Power Management
Protection
Thermal Modeling
The Thermal Model within the 269Plus has the
ability to compute the motor I2t value based on
actual motor load current.

• thermal model calculates value in terms of
  thermal capacity used
• RTDs (resistance temperature units) measuring
  stator temperature
• act as a thermal capacity check to confirm
  value calculated by
• thermal model. RTDs may be used for monitoring
  stator, bearing,
• ambient, or other temperature monitoring.
• thermal capacity used is then updated to reflect
  the higher of the
• two values

MAIN
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GE Power Management
Protection
Motor Match
MotorMatch modifies the initially entered relay
parameters to match actual measured motor
characteristics. The key elements include

• accumulated I2t in the memory
• RTD input to the memory
• learned cooldown time from run to stop
• learned cooldown time from run-
• overload to run-normal
• learned acceleration time
• learned negative sequence contribution (K-factor)

MAIN
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GE Power Management
Protection
RTD Hot Motor Compensation
When hot motor compensation is enabled

• RTD feedback from actual stator temperature
  checks
• the thermal capacity model
• User has the capability to match the motor
  thermal
• characteristics with a dual slope RTD bias
  curve
• The two part curve allows for easy fitting of
  hot and cold
• motor damage curves to the RTD bias feature

MAIN
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GE Power Management
269Plus Motor Management Relay
User Interfaces

• PC Software for setting, monitoring
• 48 character alpha-numeric backlit
• LCD display
• Five Target LED indicators
• MPM (meter) com port
• RS485 com port (ModBus RTU)

MAIN
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GE Power Management
User Interfaces

• HELP KEY
• Help key can be pressed at
• any time to provide additional
• information

• PROTECTIVE COVER
• Rugged, corrosion and flame
• retardant case
• Meets IP53/NEMA 12

MAIN
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GE Power Management
User Interfaces

• DISPLAY
• 48 Character alpha-numeric backlit
• LCD display for viewing actual
• values, causes of alarms and trips,
• and programming setpoints.

I 1120 I 2120 I 3121 (AMPS)

• STATUS INDCATORS
• 5 LEDs indicate when an output is
• activated. When an LED is lit the
• cause of the output relay operation
• will be shown on the display.

• KEYPAD
• Used to select the display of actual
• values, causes of alarms, causes of
• trips, fault diagnosis and to
• program setpoints.

MAIN
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GE Power Management
User Interfaces

• CONTROL POWER
• 120/125 AC/DC
• 240/250 AC/DC
• 24 AC/DC, 48 AC/DC

• 4 OUTPUT RELAYS
• Programmable alarm and trip conditions activated
  by
• programmable setpoints
• switch input
• remote communication control

• INPUTS/OUTPUTS
• Spare input
• MPM (meter) com port
• Differential relay input
• Speed switch input
• Access input
• Emergency restart
• External output
• Analog output
• RS485 com port

• RTD 7-10
• Can be assigned to monitor motor and load
  bearings, and ambient temperature

LINE

• RTD 1-3
• Typically used for stator
• winding protection

• RTD 4-6
• Typically used for stator
• winding protection

MAIN
Phase and ground CT inputs
Contrast dial
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GE Power Management
269Plus Motor Management Relay
Communications

• Protocol
• Modbus RTU protocol
• Terminals for RS485 located on rear port of the
  relay

• Successfull interface with many PLCs
• such as Modicon, Square D, Allen Bradley
• and GE Fanuc

MAIN
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GE Power Management
269Plus Motor Management Relay
Metering
Actual Values

• average and individual phase currents
• RTD temperatures (hottest, individual, maximum)
• unbalance ratio (In/Ip)
• ground leakage current
• thermal capacity remaining / estimated time to
  trip
• at present overload level
• motor load as a percent of full load
• phase to phase or phase to neutral voltage
• (meter option)
• W, var, MWhr, PF, Hz (meter option)

MAIN
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GE Power Management
269Plus Motor Management Relay
Monitoring
Prior Alarms

• immediate overload/stall warning
• ground fault
• mechanical jam
• unbalance
• undercurrent
• RTD overtemperature, broken RTD sensor,
• low temperature RTD
• self-test-service
• under/overvoltage (meter option)
• low power factor (meter option)

MAIN
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GE Power Management
269Plus Motor Management Relay
Monitoring
Fault Diagnosis

• 269 Plus displays the cause of the trip and
• will show the remaining lock-out time if
  applicable
• cause of the last trip and pre-trip values can
  be
• recalled for rapid fault diagnosis.

MAIN
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GE Power Management
269Plus Motor Management Relay
Monitoring
Statistical Data (StatTracTM)

• StatTracTM provides statistical data of motor
  use for
• operations monitoring, maintenance, and fault
  diagnosis.
• Using the Keypad, the user can display

• running hours and number of starts since last
  commissioning
• number of all trips
• number of specific types of trips
• total Watt-hours (with meter option)

MAIN
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GE Power Management
269Plus Motor Management Relay
Inputs

• Speed Switch Input

• enables the user to use an external speed device

• Differential Relay Input

• provided terminals to accept contact closure
  from an external
• differential relay
• all protective functions grouped through one
  main relay

• Spare Input

• spare input terminals configurable to represent
  either a standard contact input
• (ie-pressure switch), or a specific contact
  input (circuit breaker/contactor status)
• 52b contact from a circuit breaker positive
  identification of the position of the
• breaker(open or closed)

MAIN
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GE Power Management
269Plus Motor Management Relay
Outputs

• 4 Output Relay Contacts

• Trip Relay as main latched output relay
• Alarm output relay (latched or unlatched)
• Auxiliary 1 output relay (latched or unlatched)
• Auxiliary 2 output relay

• Analog output

• Used to indicate motor thermal capacity used,
• motor current, hottest stator RTD, bearing RTD,
  or CT
• secondary current

MAIN
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START
STOP
FUSE
269Plus TYPICAL WIRING
GROUND BUS
ALTERNATE CONNECTION FOR COMMON SHIELD
52b
METER COM PORT
EXTERNAL CONTACTS
EXTERNAL CONTACTS
JUMPER OR KEYSWITCH
KEYSWITCH
EXTERNAL RESET
AMMETER OR PROGRAMMABLE CONTROLLER
RS485 COM PORT
GROUNDED AT MASTER ONLY
PHASE A CT
MOTOR
PHASE B CT
PHASE C CT
500.025 GROUND CT
ZERO SEQUENCE GROUND CONNECTION
PHASE A CT
MOTOR
PHASE B CT
MAIN
PHASE C CT
RESIDUAL GROUND CONNECTION
(ALTERNATE)
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269PLUS
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269PLUS Motor Management
Relay SV Standard version
D/O Drawout version
Phase CT 1 Ground CT (required for D/O
only) 1 5 20001
2 5 5 3 1 20001
4 1 5 Relay fail safe code2
(required for D/O only) Trip Alarm Aux1 Aux2
1 FS NFS NFS FS 2 NFS FS NFS FS 3 FS F
S NFS FS 4 NFS NFS FS FS 5 FS NFS FS FS
6 NFS FS FS FS 7 FS FS FS FS 8 NFS NFS N
FS FS Relay contact arrangement3 (required
for D/O only) Alarm Aux1 Aux2
1 N.O. N.O. N.O. 2 N.O. N.O. N.C.
3 N.O. N.C. N.O.
4 N.O. N.C. N.C. 5 N.C. N.O. N.O.
6 N.C. N.O. N.C.
7 N.C. N.C. N.O. 8 N.C. N.C. N.C.
100P 100 Ohm platinum RTD
10C 10 Ohm copper RTD
100N 100 Ohm nickel RTD
120N 120 Ohm nickel RTD 120 120
AC/125 DC control voltage 240 240
AC/250 DC control voltage 24DC 24 DC
control voltage 48DC 48 DC control
voltage
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GE Power Management
Contact
GE Power Management 215 Anderson Ave., Markham,
Ont. Canada L6E 1B3 Tel [phone] Fax
905-201-2098 Email info.pm_at_indsys.ge.com
269Plus Motor Management Relay