GE MM3 User manual

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MM3
MOTOR MANAGER 3®
Instruction Manual
MM3 Revision: 1.00
Manual P/N: GEK-106295 (1601-0107-A2)
Copyright © 2001 GE Power Management
GE Power Management
215 Anderson Avenue, Markham, Ontario
Canada L6E 1B3
Tel: [phone] Fax: [phone]
Internet:
KWWSZZZ*(LQGXVWULDOFRPSP
Units must be powered up at least once per year to avoid deterioration
of electrolytic capacitors and subsequent relay failure.
NOTE
Manufactured under an
ISO9001 Registered system.
g
GE Power Management
STOP
RUNNING RELAY ARELAY A
STOPPED RELAY BRELAY B
TRIPPED AUX RELAY 1AUX RELAY 1
ALARM AUX RELAY 2AUX RELAY 2
VALUE
MESSAGE
AUTAUTOMANUALMANUAL
STSTOREORE
RESETRESET
ACTUALACTUAL
SETPOINTSETPOINT
START
A
START
A
START
B
START
B

These instructions do not purport to cover all details or variations in equipment nor provide for
every possible contingency to be met in connection with installation, operation, or maintenance.
Should further information be desired or should particular problems arise which are not covered
sufficiently for the purchaser’s purpose, the matter should be referred to the General Electric Com-
pany.
To the extent required the products described herein meet applicable ANSI, IEEE, and NEMA stan-
dards; but no such assurance is given with respect to local codes and ordinances because they
vary greatly.

GE Power Management MM3 Motor Manager 3
i
TABLE OF CONTENTS
1. INTRODUCTION 1.1 OVERVIEW
1.1.1 DESCRIPTION .......................................................................................... 1-1
1.1.2 FEATURES................................................................................................ 1-1
1.1.3 ORDER CODES........................................................................................ 1-3
1.1.4 ACCESSORIES......................................................................................... 1-3
1.2 TECHNICAL SPECIFICATIONS
1.2.1 MM3 SPECIFICATIONS............................................................................ 1-4
2. INSTALLATION 2.1 MOUNTING
2.1.1 DESCRIPTION .......................................................................................... 2-1
2.2 WIRING
2.2.1 TYPICAL WIRING DIAGRAM.................................................................... 2-3
2.3 INPUTS AND OUTPUTS
2.3.1 OVERVIEW................................................................................................ 2-4
a PHASE CT INPUTS................................................................................... 2-4
b GROUND FAULT CT INPUT (19/20)......................................................... 2-4
c SUPPLY VOLTAGE (22/23/24) ................................................................. 2-4
d GROUND (21/48) SURGE......................................................................... 2-4
e EXTERNAL CONNECTIONS .................................................................... 2-4
f THERMISTOR INPUT (17/18)................................................................... 2-4
g
ANALOG INPUT (28/29)............................................................................ 2-4
h AUX 2 COIL (34/35)................................................................................... 2-5
i OUTPUT RELAYS (36 - 47) ...................................................................... 2-5
j SERIAL COMMUNICATION PORT (25/26/27).......................................... 2-5
k SWITCH INPUTS (1 - 16)..........................................................................2-6
l PROGRAMMABLE SWITCH INPUTS (1 - 10)..........................................2-6
m STOP (11).................................................................................................. 2-6
n START A (12) AND START B (13)............................................................ 2-6
o LOCAL ISOLATOR N/O (14)..................................................................... 2-6
p CONTACTOR STATUS (A: 15, B: 16)....................................................... 2-6
q DIELECTRIC STRENGTH TESTING........................................................2-7
3. HARDWARE 3.1 USER INTERFACE
3.1.1 DESCRIPTION .......................................................................................... 3-1
3.1.2 MESSAGE DISPLAY................................................................................. 3-1
3.1.3 INDICATOR LEDS..................................................................................... 3-2
3.2 KEYPAD
3.2.1 SETPOINTS KEY ...................................................................................... 3-3
3.2.2 ACTUAL VALUES KEY ............................................................................. 3-3
3.2.3 STORE KEY .............................................................................................. 3-4
3.2.4 STOP KEY................................................................................................. 3-4
3.2.5 RESET KEY............................................................................................... 3-4
3.2.6 START A KEY............................................................................................ 3-4
3.2.7 START B KEY............................................................................................ 3-4
3.2.8 MESSAGE UP/DOWN KEYS.................................................................... 3-5
3.2.9 MESSAGE LEFT/RIGHT KEYS................................................................. 3-5
3.2.10 VALUE UP/DOWN KEYS.......................................................................... 3-5
3.3 HARDWARE DESCRIPTION
3.3.1 MM3 DESIGN............................................................................................ 3-6

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MM3 Motor Manager 3 GE Power Management
TABLE OF CONTENTS
4. SETPOINTS 4.1 OVERVIEW
4.1.1 DESCRIPTION .......................................................................................... 4-1
4.1.2 SETPOINT MESSAGE ABBREVIATIONS ................................................ 4-1
4.1.3 SETPOINTS MESSAGE SUMMARY ........................................................4-2
4.2 S1 CONFIGURATION
4.2.1 DESCRIPTION .......................................................................................... 4-3
4.2.2 COMMUNICATIONS .................................................................................4-3
4.2.3 MOTOR IDENTIFICATION........................................................................ 4-4
4.2.4 STARTER.................................................................................................. 4-4
4.2.5 CT/VT INPUTS .......................................................................................... 4-6
4.2.6 THERMISTOR........................................................................................... 4-7
4.2.7 FAULT MODE............................................................................................ 4-7
4.2.8 STATISTICS .............................................................................................. 4-8
4.2.9 PROGRAMMABLE MESSAGE ................................................................. 4-8
4.2.10 PREFERENCES........................................................................................ 4-8
4.3 S2 PROTECTION
4.3.1 DESCRIPTION .......................................................................................... 4-9
4.3.2 MOTOR PROTECTION – THERMAL...................................................... 4-10
4.3.3 MOTOR PROTECTION – GROUND FAULT........................................... 4-11
4.3.4 MOTOR PROTECTION – OPTIONS....................................................... 4-13
4.3.5 LOAD PROTECTION...............................................................................4-15
4.3.6 UNDER/OVERVOLTAGE PROTECTION ............................................... 4-17
4.4 S3 PROCESS
4.4.1 DESCRIPTION ........................................................................................ 4-18
4.4.2 PROGRAMMABLE INPUTS.................................................................... 4-19
4.4.3 INTERLOCK NAMES...............................................................................4-23
4.4.4 STOP CONFIGURATION........................................................................ 4-24
4.4.5 ANALOG INPUT ...................................................................................... 4-24
4.4.6 PROCESS OPTIONS .............................................................................. 4-26
4.5 S4 CONTROL
4.5.1 DESCRIPTION ........................................................................................ 4-27
4.5.2 UNDERVOLTAGE AUTO RESTART ...................................................... 4-27
4.5.3 AUX 1/2 RELAY CONFIG........................................................................ 4-28
4.6 S5 MONITORING
4.6.1 DESCRIPTION ........................................................................................ 4-31
4.6.2 PLANT CONDITION ................................................................................ 4-31
4.6.3 PRESET COUNTERS AND TIMERS ...................................................... 4-32
4.7 S6 FACTORY DATA
4.7.1 DESCRIPTION ........................................................................................ 4-33
4.7.2 PRODUCT FIRMWARE IDENTIFICATION............................................. 4-33
4.7.3 PRODUCT MODEL IDENTIFICATION.................................................... 4-34
4.7.4 FACTORY SERVICE DATA ....................................................................4-34
4.8 MM3 STANDARD OVERLOAD CURVES
4.8.1 OVERLOAD CURVE TRIP TIMES ..........................................................4-35
4.9 NEMA COMPATIBLE OVERLOAD CURVES
4.9.1 NEMA CURVE TRIP TIMES....................................................................4-37
4.10 S7 TESTING
4.10.1 DESCRIPTION ........................................................................................ 4-39
4.10.2 TEST CONFIGURATION......................................................................... 4-39
4.10.3 TEST RELAYS AND LEDS...................................................................... 4-40
4.10.4 CURRENT SIMULATION ........................................................................ 4-41
4.10.5 ANALOG OUTPUT SIMULATION ........................................................... 4-42
4.10.6 ANALOG INPUT SIMULATION ............................................................... 4-43

GE Power Management MM3 Motor Manager 3
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TABLE OF CONTENTS
4.10.7 SWITCH INPUTS SIMULATION.............................................................. 4-44
4.10.8 THERMISTOR SIMULATION .................................................................. 4-46
5. ACTUAL VALUES 5.1 OVERVIEW
5.1.1 DESCRIPTION .......................................................................................... 5-1
5.1.2 DEFAULT MESSAGE SELECTION .......................................................... 5-1
5.1.3 ACTUAL VALUES MESSAGE ABBREVIATIONS..................................... 5-2
5.1.4 ACTUAL VALUES MESSAGE SUMMARY ...............................................5-2
5.2 ACTUAL VALUES MESSAGES
5.3 A1 DATA
5.3.1 DESCRIPTION .......................................................................................... 5-3
5.3.2 MOTOR DATA........................................................................................... 5-3
5.3.3 PROCESS DATA....................................................................................... 5-4
5.3.4 PROGRAMMABLE MESSAGE ................................................................. 5-4
5.4 A2 STATUS
5.4.1 DESCRIPTION .......................................................................................... 5-5
5.4.2 TRIP DATA................................................................................................ 5-5
5.4.3 ALARM DATA............................................................................................ 5-6
5.4.4 MOTOR STATUS ...................................................................................... 5-8
5.5 A3 INPUTS
5.5.1 DESCRIPTION .......................................................................................... 5-9
5.5.2 INPUT CONTACTS STATUS.................................................................... 5-9
5.6 A4 STATISTICS
5.6.1 DESCRIPTION ........................................................................................ 5-11
5.6.2 TIMERS ................................................................................................... 5-11
5.6.3 COUNTERS............................................................................................. 5-12
6. COMMUNICATIONS 6.1 MM3 MODBUS PROTOCOL
6.1.1 OVERVIEW................................................................................................ 6-1
6.1.2 ELECTRICAL INTERFACE ....................................................................... 6-1
6.1.3 DATA FRAME FORMAT AND DATA RATE.............................................. 6-1
6.1.4 DATA PACKET FORMAT.......................................................................... 6-2
6.1.5 ERROR CHECKING.................................................................................. 6-2
a CRC-16 ALGORITHM................................................................................ 6-3
6.1.6 TIMING ...................................................................................................... 6-3
6.2 MM3 SUPPORTED FUNCTIONS
6.2.1 DESCRIPTION .......................................................................................... 6-4
6.2.2 FUNCTION CODE 01H ............................................................................. 6-4
6.2.3 FUNCTION CODE 03H ............................................................................. 6-5
6.2.4 FUNCTION CODE 04H ............................................................................. 6-6
6.2.5 FUNCTION CODE 05H ............................................................................. 6-7
6.2.6 FUNCTION CODE 06H ............................................................................. 6-8
6.2.7 FUNCTION CODE 07H ............................................................................. 6-9
6.2.8 FUNCTION CODE 08H ........................................................................... 6-10
6.2.9 FUNCTION CODE 10H ........................................................................... 6-11
6.3 ERROR RESPONSES
6.3.1 DESCRIPTION ........................................................................................ 6-12
6.4 APPLICATIONS
6.4.1 PERFORMING COMMANDS USING FUNCTION CODE 10H............... 6-13

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MM3 Motor Manager 3 GE Power Management
TABLE OF CONTENTS
6.4.2 STORING COMMUNICATIONS ADDRESS USING THE BROADCAST
COMMAND.............................................................................................. 6-14
6.4.3 USING THE USER DEFINABLE MEMORY MAP ................................... 6-15
6.4.4 USER DEFINABLE MEMORY MAP DEFAULT VALUES .......................6-16
6.5 MEMORY MAP
6.5.1 DESCRIPTION ........................................................................................ 6-18
6.5.2 MEMORY MAP TABLE............................................................................6-18
6.6 DATA FORMATS
6.6.1 DATA FORMATS TABLE ........................................................................ 6-37
7. TESTING 7.1 INJECTION TESTING
7.1.1 PRIMARY INJECTION TESTING..............................................................7-1
7.1.2 SECONDARY INJECTION TESTING........................................................ 7-1
7.2 FUNCTIONAL TESTS
7.2.1 PHASE CURRENT FUNCTIONS ..............................................................7-2
7.2.2 UNBALANCE EXAMPLES......................................................................... 7-3
a EXAMPLE #1............................................................................................. 7-3
b EXAMPLE #2............................................................................................. 7-3
7.2.3 GROUND FAULT CURRENT FUNCTIONS.............................................. 7-3
7.2.4 INPUT FUNCTIONS .................................................................................. 7-4
7.2.5 THERMISTOR INPUT TESTS................................................................... 7-4
7.2.6 POWER FAIL TEST...................................................................................7-4
8. MM3PC SOFTWARE 8.1 OVERVIEW
8.1.1 DESCRIPTION .......................................................................................... 8-1
8.1.2 HARDWARE & SOFTWARE REQUIREMENTS .......................................8-1
8.1.3 CHECKING IF INSTALLATION/UPGRADE IS REQUIRED......................8-2
8.2 INSTALLING MM3PC
8.2.1 SOFTWARE INSTALLATION/UPGRADE ................................................. 8-3
8.3 CONFIGURATION
8.3.1 CONFIGURING MM3PC ........................................................................... 8-4
8.3.2 MM3PC PROGRAM MENUS .................................................................... 8-5
8.4 USING MM3PC
8.4.1 SAVING SETPOINTS TO A FILE..............................................................8-6
8.4.2 MM3 FIRMWARE UPGRADES ................................................................. 8-7
8.4.3 LOADING SETPOINT FILES.....................................................................8-8
8.4.4 ENTERING SETPOINTS........................................................................... 8-9
8.4.5 VIEWING ACTUAL VALUES................................................................... 8-10
8.5 CHASSIS MOUNT UNITS
8.5.1 DESCRIPTION ........................................................................................ 8-12
8.5.2 SETTING THE BAUD RATE AND PARITY.............................................8-12
9. STARTER TYPES 9.1 FV NON-REVERSING STARTER
9.1.1 DESCRIPTION .......................................................................................... 9-1
9.1.2 MM3 SEQUENCES ...................................................................................9-1
9.2 FV REVERSING STARTER
9.2.1 DESCRIPTION .......................................................................................... 9-3

GE Power Management MM3 Motor Manager 3
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TABLE OF CONTENTS
9.2.2 MM3 SEQUENCES ................................................................................... 9-4
9.2.3 NOTES....................................................................................................... 9-4
9.3 TWO SPEED STARTER
9.3.1 DESCRIPTION .......................................................................................... 9-6
9.3.2 MM3 SEQUENCES ................................................................................... 9-7
9.4 SLIP RING STARTER
9.4.1 DESCRIPTION ........................................................................................ 9-11
9.4.2 MM3 SEQUENCES ................................................................................. 9-12
9.5 PRIMARY RESISTANCE STARTER
9.5.1 DESCRIPTION ........................................................................................ 9-14
9.5.2 MM3 SEQUENCE.................................................................................... 9-15
9.6 INVERTER STARTER
9.6.1 DESCRIPTION ........................................................................................ 9-17
9.6.2 MM3 SEQUENCES ................................................................................. 9-17
9.7 AUTOTRANSFORMER OPEN TRANSITION STARTER
9.7.1 DESCRIPTION ........................................................................................ 9-19
9.7.2 MM3 SEQUENCES ................................................................................. 9-20
9.8 AUTOTRANSFORMER CLOSED TRANSITION STARTER
9.8.1 DESCRIPTION ........................................................................................ 9-23
9.8.2 MM3 SEQUENCES ................................................................................. 9-24
9.9 PART WINDING STARTER
9.9.1 DESCRIPTION ........................................................................................ 9-27
9.9.2 MM3 SEQUENCE.................................................................................... 9-27
9.10 WYE-DELTA OPEN TRANSITION STARTER
9.10.1 DESCRIPTION ........................................................................................ 9-28
9.10.2 MM3 SEQUENCES ................................................................................. 9-29
9.11 WYE-DELTA CLOSED TRANSITION STARTER
9.11.1 DESCRIPTION ........................................................................................ 9-31
9.11.2 MM3 SEQUENCE.................................................................................... 9-32
9.12 DUTY/STANDBY STARTER
9.12.1 DESCRIPTION ........................................................................................ 9-34
9.12.2 MM3 SEQUENCES ................................................................................. 9-34
9.13 SOFT STARTER
9.13.1 DESCRIPTION ........................................................................................ 9-36
9.13.2 MM3 SEQUENCE.................................................................................... 9-36
10. CONTROL WIRE
APPLICATIONS 10.1 TWO WIRE CONTROL
10.1.1 DESCRIPTION ........................................................................................ 10-1
10.1.2 CONTROL OPERATION......................................................................... 10-1
10.2 HAND/OFF/AUTO CONFIGURATION
10.2.1 2-WIRE HAND / 2-WIRE AUTO............................................................... 10-3
10.2.2 CONTROL OPERATION......................................................................... 10-3
10.2.3 3-WIRE HAND / 2-WIRE AUTO............................................................... 10-5
10.2.4 CONTROL OPERATION......................................................................... 10-5
10.2.5 3 WIRE HAND / 3 WIRE AUTO.............................................................. 10-7
10.2.6 CONTROL OPERATION......................................................................... 10-7
10.3 HAND/AUTO CONFIGURATION
10.3.1 3-WIRE HAND / 2-WIRE AUTO............................................................... 10-9
10.3.2 CONTROL OPERATION......................................................................... 10-9

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MM3 Motor Manager 3 GE Power Management
TABLE OF CONTENTS
A. MM3 COMMISSIONING
SUMMARY A.1 COMMISIONING SUMMARY
A.1.1 DESCRIPTION ..........................................................................................A-1
B. FREQUENTLY ASKED
QUESTIONS B.1 MM3 FAQ
B.1.1 QUESTIONS AND ANSWERS..................................................................B-1
C. DO’S AND DONT’S C.1 DO’S AND DONT’S
C.1.1 CHECKLIST...............................................................................................C-1
a MM3 GROUNDING....................................................................................C-1
b GROUNDING OF PHASE AND GROUND CTS........................................C-1
c RS485 COMMUNICATIONS PORT ..........................................................C-1
d SWITCH INPUTS.......................................................................................C-2
e THERMISTOR AND ANALOG INPUTS ....................................................C-2
f STOP SWITCH INPUT ..............................................................................C-2
g
CONTACTOR STATUS FEEDBACK.........................................................C-2
D. ASYMMETRICAL
STARTING CURRENT D.1 ASYMMETRICAL CURRENT
D.1.1 OVERVIEW................................................................................................D-1
E. CT ISOLATION E.1 CT ISOLATION
E.1.1 MM3 CT WITHSTAND...............................................................................E-1
E.1.2 CT SIZE AND SATURATION ....................................................................E-1
F. TABLES AND FIGURES F.1 TABLES AND FIGURES
F.1.1 LIST OF TABLES.......................................................................................F-1
F.1.2 LIST OF FIGURES ....................................................................................F-1
G. EU DECLARATION OF
CONFORMITY G.1 EU DECLARATION OF CONFORMITY
H. WARRANTY H.1 WARRANTY
H.1.1 GE POWER MANAGEMENT WARRANTY...............................................H-1

GE Power Management MM3 Motor Manager 3 1-1
1 INTRODUCTION 1.1 OVERVIEW
1
1 INTRODUCTION 1.1 OVERVIEW 1.1.1 DESCRIPTION
The MM3 combines control functions normally found in a low voltage motor control center (MCC) with motor
protection. This compact, microprocessor based device, provides sophisticated control and protective relaying
at significant cost savings over an MCC design using discrete devices.
Standard features simplify maintenance and plant expansion. One MM3 is required for every starter unit in the
MCC. The contactor can be energized and de-energized using the MM3's direct-wired inputs or via the serial
port. Full voltage non-reversing, full voltage Reversing, two-speed, autotransformer, inverter, wye-delta, slip
ring, and part winding type starters may be completely controlled by the MM3 using the two contactor outputs.
Motor protection is included for the most common causes of failure to prevent costly shutdowns and rewinds.
These include three-phase overload, stalled rotor, ground fault and loss of phase.
A two-wire RS485 Modbus communications port is provided for high speed communications with a complete
line-up of MCCs. Any MM3 may be interrogated on demand to determine both actual and setpoint operating
parameters. Fast response time to a request for alarm or trip status makes real time control of a complete pro-
cess possible. Statistical recording of running hours and number of starts and trips assists with predictive
maintenance scheduling.
1.1.2 FEATURES
The MM3 has been developed with economy in mind. The customer is able to choose from different options to
achieve maximum benefit from the relay when integrated into the process environment. The standard MM3
comes with three-phase overload protection (49/51), single-phase, 4 control inputs (Start, Stop, Local Isolator,
Contactor A status) plus 2 programmable inputs. The full version adds the following additional features:
•2
nd contactor control (wye/delta, two speed, reversing, etc.) including all timers, relays and control inputs
• Undercurrent/underpower protection (37)
• Thermistor (49) input which accepts PTC and NTC thermistor types
• Analog input/output
• 6 more programmable inputs plus 2 control inputs
Table 1–1: MM3 OPTIONS
OPTION 1 (STANDARD) OPTION 2 (FULL)
Contactor A Contactor A
Serial Communications Serial Communications
4 Programmable Inputs 10 Programmable Inputs
4 Control Inputs 6 Control Inputs
3 Phase Inputs 3 Phase Inputs
1 Ground Fault Input 1 Ground Fault Input
Aux 1 Relay Aux 1 Relay
Aux 2 / ESD Relay Contactor B
VT Input Aux 2 / ESD Relay
VT Input
Thermistor Input
Analog Input
Analog Output

1-2 MM3 Motor Manager 3 GE Power Management
1.1 OVERVIEW 1 INTRODUCTION
1
Figure 1–1: FUNCTIONAL BLOCK DIAGRAM

GE Power Management MM3 Motor Manager 3 1-3
1 INTRODUCTION 1.1 OVERVIEW
1
1.1.3 ORDER CODES
This instruction manual describes the features of a MM3 with all options included.
Examples:
• MM3–2–E–N–120: full-featured MM3, ESD relay, Chassis mount unit with 120 V AC control power
• MM3–1–A–W–240: basic MM3 with Aux. 2 relay, Local Display and 240 V AC control power
1.1.4 ACCESSORIES
•MM3PC Software: Software package to aid in setting up MM3 operating parameters (free)
•RS-232/485: RS232 to RS485 converter box designed for harsh industrial environments
•5A Phase CT: 300, 350, 400, 500, 600, 750, 1000
•50:0.025 Ground CT: For sensitive ground detection on high resistance grounded systems
•Control key cover: Covers the auto/manual LEDs, keys and keypad start buttons
Table 1–2: SELECTION GUIDE
MM3 gggg
Base Unit MM3 |||| ProductFamily
MM3 Options 1 | | | Option 1: Basic Unit
2 | | | Option 2: Full Unit
E | | ESD Relay
A | | Aux 2 Relay
Display N | No Display (Chassis Unit)
W | With Local Display
Power 120 120 V AC Control Voltage
240 240 V AC Control Voltage
NOTE

1-4 MM3 Motor Manager 3 GE Power Management
1.2 TECHNICAL SPECIFICATIONS 1 INTRODUCTION
11.2 TECHNICAL SPECIFICATIONS 1.2.1 MM3 SPECIFICATIONS
PHASE CURRENT INPUTS
CONVERSION: true RMS, sample time 1.67 ms
RANGE: 0.1 to 8 ×Phase CT Primary Amps
setpoint when external CTs used
0.2 to 250 A; FLC <32 A
1 to 2000 A; FLC ≥32 A
ACCURACY: ± (2% +1) †
GROUND FAULT CURRENT INPUT
CONVERSION: true RMS, sample time 1.67 ms
RANGE: 0.1 to 1.0 ×FLC Amps setpoint
(Residual Connection)
0.5 to 15.0 A (50:0.025 CT)
FULL SCALE: 1.5 ×FLC Amps setpoint
(Residual Connection)
15 A (50:0.025 CT)
ACCURACY: ± (2%+2), FLC <32 A †
± (2%+6), FLC ≥32 A †
(Residual Connection)
± 0.3 A (50:0.025 CT) †
† Accuracy given as: ± ([% of reading] + [number of least
significant digits])
VOLTAGE INPUT / POWER READING
CONVERSION: true RMS, sample time 1.67 ms
VOLTAGE FULL
SCALE: 1.5 ×VT Primary
VOLTAGE
ACCURACY: ± 2% of VT Primary
or
2% of read-
ing, whichever is greater
POWER ACCURACY:± 5% of nominal
or
± 5% of reading,
whichever is greater
INPUT VOLTAGE: Nominal: 120 VAC or 240 VAC
Max: 250 VAC
VT BURDEN: 0.01 VA
OVERLOAD CURVES
TRIP TIME
ACCURACY: ± 200 ms up to 10 seconds
± 2% of trip time over 10 seconds
DETECTION LEVEL: ± 1% of primary CT Amps
GROUND FAULT TRIP TIME
ACCURACY: –0 ms/+50 ms
0.0 = less than 50 ms
ACCELERATION TIME
RANGE: 0.5 to 125 seconds or OFF
ACCURACY: ± 0.5 sec.
THERMAL COOLING TIMES
RANGE: 5 to 1080 min. when motor stopped
50% of motor stopped value when
motor running.
ACCURACY: ± 1 minute
SINGLE PHASE
RANGE: greater than 30% U/B
ACCURACY: ± 2 percentage points
TRIP DELAY: 5 sec., ±1 sec.
CALCULATION METHOD:
where:
I
AV
= average phase current
I
M
= current in a phase with maximum deviation from
I
AV
IFLC = motor full load current setting
UNDERCURRENT
RANGE: 10 to 100% ×motor FLC or OFF
DELAY RANGE: 1 to 60 seconds
ACCURACY: ±1 sec.
STALLED ROTOR
RANGE: 1.15 to 4.50 ×FLC or OFF
DELAY RANGE: 0.5 to 5 seconds
ACCURACY: ± 0.5 sec.
THERMISTOR INPUTS
SENSOR TYPES: positive temperature coefficient
PTC
R
HOT
= 100 to 30000 Ω
negative temperature coefficient
NTC
R
HOT
= 100 to 30000 Ω
DELAY: 1 second
ACCURACY: ± 5% or 100 Ω
(whichever is greater)
ANALOG INPUT
RANGE: 4 to 20mA
ACCURACY: ± 1% of full scale
ALARM: programmable 4 to 20 mA
TRIP: programmable 4 to 20 mA
ACCURACY: ±2% of full scale reading
ISOLATION: 15 V isolated, active source
ANALOG OUTPUTS
OUTPUT: 4 to 20 mA
MAX LOAD: 600 Ω
MAX OUTPUT: 21 mA
ACCURACY: ±2% of full scale reading
ISOLATION: 36 V isolated, active source
if
IAV IFLC
≥:
UB
%
IMIA
–
IAV
------------------- 100
×
=
if
IAV IFLC
<:
UB
%
IMIA
–
IFLC
------------------- 100
×
=

GE Power Management MM3 Motor Manager 3 1-5
1 INTRODUCTION 1.2 TECHNICAL SPECIFICATIONS
1
RELAY CONTACTS
MM3 CONTACTOR A & B OUTPUT RELAYS:
MM3 CONTACTOR AUX1 & AUX2 OUTPUT RELAYS:
UNDERVOLTAGE - SUPPLY VOLTAGE
UNDERVOLTAGE: 65% of nominal (120 or 240 VAC)
immediate restart for maximum dip
time of 0.1 to 0.5 seconds or OFF
delayed restart for maximum dip
time of 0.1 or 10.0 seconds or
UNLIMITED time
DELAY RESTART RANGE: 0.2 to 300 seconds
DELAY RESTART ACCURACY: ±0.2 seconds
SUPPLY VOLTAGE
AC NOMINAL: 115 V AC, range 80 to 135 V AC
230 VAC, range 150 to 250 VAC
FREQUENCY: 50/60 Hz
POWER: 25 VA (maximum), 7 VA (nominal)
COMMUNICATIONS
TYPE: RS485 2-wire, half duplex
BAUD RATE: 1200 to 57K baud
PROTOCOL: Modbus RTU
FUNCTIONS: Read/write setpoints
Read coil status
Read actual values
Read device status
Execute commands
Loopback Test
TYPE TESTS
TRANSIENTS: ANSI/IEEE C37.90.1 Oscillatory/
Fast Risetime Transients
IEC 801-4 Electrical Fast Transient/
Burst Requirements
IMPULSE: IEC 255-5 5kV Impulse Voltage Test
RFI: 150 MHz, 450 MHz 5W Handheld
Transmitter @ 25cm
STATIC: IEC 801-2 Electrostatic Discharge
HIPOT: 1500V, 1 Minute All input > 30 Volts
ENVIRONMENT / GENERAL INFORMATION
POLLUTION DEGREE: 2
OVERVOLTAGE CATEGORY: 2
INSULATION VOLTAGE: 300 V
OPERATING TEMPERATURE RANGE: 0°C to 60°C
IP CLASS: IEC 529 - IpX0
WEIGHT
MAX WEIGHT: 6 lbs. 12 oz. (3.1 kg)
SHIPPING BOX SIZE:12" ×9" ×7.5"
350 mm ×229 mm ×190 mm
FUSE TYPE / RATING
0.5 A, 250V Fast Blow, High breaking capacity
INSTALLATION
WARNING!: HAZARD may result if the product is not used for
its intended purpose
VENILATION REQUIREMENTS: None
CLEANING REQUIREMENTS: None
CERTIFICATION / COMPLIANCE
CE: IEC 947-1,IEC 1010-1
Registered to CSA CAN3.Z299.3-1985 & ISO 9001-1994
Design and specifications subject to change without notice.
It is recommended that all MM3 relays are powered up at least once per year to avoid deterioration of
electrolytic capacitors in the power supply.
VOLTAGE MAKE/CARRY
CONTINUOUS
MAXIMUM
OPERATING
CURRENT
MAXIMUM
SWITCHING
CAPACITY
RESISTIVE
30 VDC 8 A 8 A 2500 VA
300 W
250 VAC 8 A 8 A 2500 VA
300 W
INDUCTIVE
(PF=0.4)
30 VDC 3.5 A 8 A 1250 VA
220 W
250 VAC 3.5 A 8 A 1250 VA
220 W
CONFIGURATION SPST-NO ---CONTACTOR A & B
— FORM A
CONTACT MATERIAL SILVER ALLOY (A
g
CdO)
MAX OPERATING
VOLTAGE 380 VAC, 125 VDC
MIN PERMISSIBLE
LOAD 5 VDC, 10 mA
VOLTAGE MAKE/
CARRY
CONTINUOUS
Maximum
Operating
Current
Maximum
Switching
Capacity
RESISTIVE
30 VDC 8 A 8 A 2000 VA
240 W
250 VAC 8 A 8 A 2000 VA
240 W
INDUCTIVE
(PF=0.4)
30 VDC 3.5 A 8 A 875 VA
170W
250 VAC 3.5 A 8 A 875 VA
170 W
CONFIGURATION SPST-NO + SPST-NC --- AUX 1 & 2
— FORM C
CONTACT MATERIAL SILVER ALLOY (A
g
CdO)
MAX OPERATING
VOLTAGE 380 VAC, 125 VDC
MIN PERMISSIBLE
LOAD 5 VDC, 10 mA

1-6 MM3 Motor Manager 3 GE Power Management
1.2 TECHNICAL SPECIFICATIONS 1 INTRODUCTION
1

GE Power Management MM3 Motor Manager 3 2-1
2 INSTALLATION 2.1 MOUNTING
2
2 INSTALLATION 2.1 MOUNTING 2.1.1 DESCRIPTION
Cut the panel as shown below to mount the MM3. Use either the #8-32 or #6 x 1/2” mounting screws provided
to mount the MM3 to the panel.
Figure 2–1: MM3 DIMENSIONS

2-2 MM3 Motor Manager 3 GE Power Management
2.1 MOUNTING 2 INSTALLATION
2
Figure 2–2: FEATURES
STATUSINDICATORS:
RUNNING: Contactor is energized
andmotor isrunning.
STOPPED: Contactor is not ener-
gizedand motorisnot running.
TRIPPED: Contactor is not ener-
gized. Motor is not running. The
MM3 has tripped the motor due to
a fault. Normally a cause of trip
messagewill bedisplayed.
ALARM: One or more alarm condi-
tions are present. Normally a
cause of alarm message will be
displayed.
GROUNDCT INPUT
50:0.025groundfault
input.
Rear View
Front View
DISPLAY:
2 line, 40 character illuminated display
communicates all messages in simple
English for easy interpretation by users
unfamiliar with unit.
SUPPLYVOLTAGE
requiredto powerthe MM3
VOLTAGEINPUT
PhaseA voltageinput for
voltageand powermonitoring.
SWITCH INPUTS
Opto-isolated 120/240 VAC live inputs for various interlock functions. The
interlock inputs are fully programmable and can be assigned to such
functions as setpoint access, plant interlock, test, and various others.
COMMUNICATIONS
RS485 2 wire serial
communication port
operates at 1200 - 57,600
bps for remote
commands, monitoring
and setpoint store.
ModBus®RTU protocol.
Ground
safety and
surge
THERMISTOR
NTCorPTC thermistor
inputforhot winding
detection.
ANALOG INPUT/OUTPUT
4-20mA input forprocess
controlmonitoring/
alarming/tripping.
4 RELAYS
■Contactor A: direct on
line / forward / wye
■ContactorB: reverse /delta
■Userprogrammable relay
(AUX1)
■Userprogrammable relay
(AUX2)
PROGRAM KEYS:
ACTUAL VALUES: Press to enter
actual values mode to display actu-
al motor values such as current,
groundleakage,thermal capacity.
SETPOINTS: Press to enter setpoint
modeto alter orexaminesetpoints.
STORE: Save a newly entered
setpoint.
RESET: ResettheMM3 after atrip.
MESSAGE: Move to the desired
setpoint or actual value message.
VALUE: Increment or decrement
currently displayed setpoint value.
CONTROL KEYS:
AUTO: Selects
operation of start via communi-
cation port.
MANUAL: Selects manual opera-
tion of motor using start key.
START A: Energize contactor A.
START B: Energize contactor B.
STOP: De-energize contactors.
RELAY INDICATORS:
RELAY A: ContactorAenergized.
RELAY B: ContactorBenergized.
AUX 1: Userprogrammablerelay 1 energized.
AUX 2: Userprogrammablerelay 2 energized.
CONTROL POWER
120/240 VAC supply voltage
selector switch and fuse
access door
Ground safety
RESIDUALGROUND INPUT
PHASE CT INPUTS
3isolatedphase CT inputs

GE Power Management MM3 Motor Manager 3 2-3
2 INSTALLATION 2.2 WIRING
2
2.2 WIRING 2.2.1 TYPICAL WIRING DIAGRAM
Figure 2–3: TYPICAL WIRING DIAGRAM
∗
∗
∗
eGE Power Management

2-4 MM3 Motor Manager 3 GE Power Management
2.3 INPUTS AND OUTPUTS 2 INSTALLATION
2
2.3 INPUTS AND OUTPUTS 2.3.1 OVERVIEW
a) PHASE CT INPUTS
For motor full-load currents up to 250 A, the phase conductors can be directly connected to the MM3 without
phase CTs. If external CTs are required, the secondary winding should be looped though the MM3 doughnut
opening.
Selected CTs should be capable of supplying the required current to the total secondary load which consists of
the connection wiring burden. The CT must not saturate under maximum current conditions which can be up to
8 times motor full load during starting.
b) GROUND FAULT CT INPUT (19/20)
The ground fault detection consists of a 50:0.025 input (Terminal 19) and a common input (Terminal 20), or
residual connection of phase CTs (
only the common input should be externally grounded ). The 5 A input on the
ground CT is used for 5 A secondary CTs or for residual connection of phase CTs. Residual ground fault pro-
tection provides a sensitivity of 10% of motor full load current. The 50:0.025 core balance (zero-sequence) CT
input can be used for improved sensitivity when measuring the ground fault current.
Care must be taken when turning ON the Ground Fault Trip feature. If the interrupting device
(contactor or circuit breaker) is not rated to break ground fault current (low resistance or sol-
idly grounded systems), the feature should be disabled. The 50:0.025 input is only recom-
mended to be used on resistance grounded systems. Where the system is solidly grounded
or high levels of current are to be detected use the 5 A ground input.
c) SUPPLY VOLTAGE (22/23/24)
A supply voltage of 120/240 VAC at 50/60 Hz is required to power the MM3. The label on the back of the unit
specifies the voltage that has been internally set. To change the voltage setting, open the sliding door on the
back of the MM3 and locate the supply voltage selector slide switch. The selector slide switch has a label
affixed to show the 120/240 V AC positions. Set the slide switch to the desired voltage.
d) GROUND (21/48) SURGE
This is an additional ground terminal provided for dissipating transient signals and surges. This must be con-
nected by a thick wire or braid to the system ground for reliable operation.
e) EXTERNAL CONNECTIONS
Signal wiring is to box terminals that can accommodate wire as large as 12 gauge. CT connections are made
using #8 screw ring terminals that can accept wire as large as 8 gauge. Consult Figure 2–3: TYPICAL WIRING
DIAGRAM on page 2–3. Other features can be wired as required.
f) THERMISTOR INPUT (17/18)
Either a Positive Temperature Coefficient (PTC) or Negative Temperature Coefficient (NTC) thermistor may be
directly connected to the MM3. By specifying the hot and cold thermistor resistance, the MM3 automatically
determines the thermistor type as NTC or PTC. Use thermistors with hot and cold resistance values in the
range 100 to 30000 Ω. If no thermistor is connected, the S1: CONFIGURATION \ THERMISTOR \ THERMISTOR TRIP
and S1: CONFIGURATION \ THERMISTOR \ THERMISTOR ALARM setpoints must be set to DISABLE.
g) ANALOG INPUT (28/29)
The MM3 accepts an analog input from a standard 4 to 20 mA source. This input can be used for process con-
trol monitoring to provide status and/or alarm and tripping signals related to the input signal level. The analog
input messages (S3: PROCESS \ ANALOG INPUT setpoints page) can be programmed to show user-defined
names and units.
NOTE