GE MOTOR MANAGER 2 User manual

R
E
G
I
S
T
E
R
E
D
MM2
MOTOR MANAGER 2®
Instruction Manual
MM2 Firmware Revision: 4.0x
MM2 Software Revision: 4.0X or newer
Manual P/N: 1601-0056-DN (GEK-106294)
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

These instructions do not purport to cover all details or variations in equipment nor pro-
vide 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 Company.
To the extent required the products described herein meet applicable ANSI, IEEE, and
NEMA standards; but no such assurance is given with respect to local codes and ordi-
nances because they vary greatly.

GE Power Management
MM2 Motor Manager 2 i
TABLE OF CONTENTS
1. INTRODUCTION 1.1 OVERVIEW
1.1.1 DESCRIPTION..............................................................................1-1
1.1.2 FEATURES...................................................................................1-1
1.2 ORDERING
1.2.1 ORDER CODES ...........................................................................1-2
1.2.2 ACCESSORIES............................................................................1-3
1.2.3 SPECIAL ORDER.........................................................................1-3
1.3 SPECIFICATIONS
1.3.1 MM2 SPECIFICATIONS ...............................................................1-4
2. INSTALLATION 2.1 MOUNTING
2.1.1 DESCRIPTION..............................................................................2-1
2.2 INPUTS AND OUTPUTS
2.2.1 PHASE CT INPUTS......................................................................2-5
2.2.2 GROUND FAULT CT INPUT ........................................................2-5
2.2.3 SUPPLY VOLTAGE......................................................................2-5
2.2.4 GROUND SURGE ........................................................................2-5
2.2.5 EXTERNAL CONNECTIONS........................................................2-5
2.2.6 THERMISTOR INPUT...................................................................2-6
2.2.7 ANALOG INPUT ...........................................................................2-6
2.2.8 AUX 2 COIL ..................................................................................2-6
2.2.9 OUTPUT RELAYS........................................................................2-6
2.2.10 SWITCH INPUTS..........................................................................2-6
2.2.11 PROGRAMMABLE SWITCH INPUTS..........................................2-6
2.2.12 SERIAL COMMUNICATION PORT ..............................................2-7
2.2.13 STOP ............................................................................................2-7
2.2.14 START A / START B.....................................................................2-8
2.2.15 LOCAL ISOLATOR N/O................................................................2-8
2.2.16 CONTACTOR STATUS................................................................2-8
2.2.17 SWITCH COMMON ......................................................................2-8
2.2.18 DIELECTRIC STRENGTH TESTING ...........................................2-8
3. HARDWARE 3.1 FACEPLATE FUNCTIONS
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...............................................................................3-5
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 THEORY OF OPERATION
3.3.1 HARDWARE DESCRIPTION........................................................3-6

ii MM2 Motor Manager 2
GE Power Management
TABLE OF CONTENTS
4. SETPOINTS 4.1 OVERVIEW
4.1.1 DESCRIPTION............................................................................. 4-1
4.1.2 ABBREVIATIONS ........................................................................ 4-1
4.2 S1 CONFIGURATION
4.2.1 DESCRIPTION............................................................................. 4-3
4.2.2 COMMUNICATIONS.................................................................... 4-3
4.2.3 MOTOR IDENTIFICATION .......................................................... 4-3
4.2.4 STARTER..................................................................................... 4-4
4.2.5 CT / VT INPUTS........................................................................... 4-5
4.2.6 THERMISTOR.............................................................................. 4-6
4.2.7 FAULT MODE.............................................................................. 4-6
4.2.8 STATISTICS................................................................................. 4-7
4.2.9 PROGRAMMABLE MESSAGE.................................................... 4-7
4.2.10 PREFERENCES .......................................................................... 4-7
4.3 S2 PROTECTION
4.3.1 DESCRIPTION............................................................................. 4-8
4.3.2 STANDARD OVERLOAD CURVES............................................. 4-8
4.3.3 NEMA COMPATIBLE OVERLOAD CURVES........................... 4-10
4.3.4 MOTOR PROTECTION – THERMAL ........................................ 4-12
4.3.5 MOTOR PROTECTION – GROUND FAULT............................. 4-13
4.3.6 MOTOR PROTECTION – OPTIONS ......................................... 4-15
4.3.7 LOAD PROTECTION................................................................. 4-17
4.3.8 UNDER/OVERVOLTAGE PROTECTION.................................. 4-19
4.4 S3 PROCESS
4.4.1 DESCRIPTION........................................................................... 4-20
4.4.2 PROGRAMMABLE INPUTS ...................................................... 4-20
4.4.3 INTERLOCK NAMES................................................................. 4-25
4.4.4 STOP CONFIGURATION .......................................................... 4-25
4.4.5 ANALOG INPUT......................................................................... 4-26
4.5 S4 CONTROL
4.5.1 DESCRIPTION........................................................................... 4-28
4.5.2 UNDERVOLTAGE AUTORESTART.......................................... 4-28
4.5.3 AUX RELAY 1/2 CONFIG .......................................................... 4-29
4.6 S5 MONITORING
4.6.1 DESCRIPTION........................................................................... 4-32
4.6.2 PLANT CONDITION................................................................... 4-32
4.6.3 PRESET COUNTERS AND TIMERS......................................... 4-33
4.7 S6 FACTORY DATA
4.7.1 DESCRIPTION........................................................................... 4-34
4.7.2 PRODUCT FIRMWARE............................................................. 4-34
4.7.3 PRODUCT MODEL IDENTIFICATION ...................................... 4-34
4.7.4 FACTORY SERVICE DATA....................................................... 4-34
5. ACTUAL VALUES 5.1 OVERVIEW
5.1.1 DESCRIPTION............................................................................. 5-1
5.1.2 DEFAULT MESSAGE SELECTION............................................. 5-1
5.1.3 ABBREVIATIONS ........................................................................ 5-2
5.2 A1 DATA
5.2.1 DESCRIPTION............................................................................. 5-3
5.2.2 MOTOR DATA ............................................................................. 5-3

GE Power Management
MM2 Motor Manager 2 iii
TABLE OF CONTENTS
5.2.3 PROCESS DATA..........................................................................5-4
5.2.4 PROGRAMMABLE MESSAGE.....................................................5-4
5.3 A2 STATUS
5.3.1 DESCRIPTION..............................................................................5-5
5.3.2 TRIP DATA ...................................................................................5-5
5.3.3 ALARM DATA ...............................................................................5-6
5.3.4 MOTOR STATUS..........................................................................5-8
5.4 A3 INPUTS
5.4.1 DESCRIPTION..............................................................................5-9
5.4.2 INPUT CONTACTS STATUS .......................................................5-9
5.5 A4 STATISTICS
5.5.1 DESCRIPTION............................................................................5-11
5.5.2 TIMERS.......................................................................................5-11
5.5.3 COUNTERS................................................................................5-11
6. COMMUNICATIONS 6.1 MM2 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
6.1.6 CRC-16 ALGORITHM...................................................................6-3
6.1.7 TIMING..........................................................................................6-4
6.1.8 MM2 SUPPORTED FUNCTIONS.................................................6-4
6.2 MODBUS FUNCTIONS
6.2.1 FUNCTION CODE 01H.................................................................6-5
6.2.2 FUNCTION CODE 03H.................................................................6-6
6.2.3 FUNCTION CODE 04H.................................................................6-7
6.2.4 FUNCTION CODE 05H.................................................................6-8
6.2.5 FUNCTION CODE 06H.................................................................6-9
6.2.6 FUNCTION CODE 07H...............................................................6-10
6.2.7 FUNCTION CODE 08H...............................................................6-11
6.2.8 FUNCTION CODE 10H...............................................................6-12
6.3 ERROR RESPONSES
6.3.1 DESCRIPTION............................................................................6-13
6.4 APPLICATIONS
6.4.1 PERFORMING COMMANDS USING FUNCTION CODE 10H...6-14
6.4.2 STORING COMM ADDRESS USING THE BROADCAST
COMMAND.................................................................................6-15
6.4.3 USING THE USER DEFINABLE MEMORY MAP.......................6-16
6.4.4 USER DEFINABLE MEMORY MAP DEFAULT VALUES...........6-17
6.5 MEMORY MAP
6.5.1 DESCRIPTION............................................................................6-19
6.5.2 MEMORY MAP TABLE...............................................................6-20
6.6 DATA FORMATS
6.6.1 DATA FORMATS TABLE............................................................6-41

iv MM2 Motor Manager 2
GE Power Management
TABLE OF CONTENTS
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................................................. 7-3
7.2.2 UNBALANCE EXAMPLES........................................................... 7-4
7.2.3 GROUND FAULT CURRENT FUNCTIONS ................................ 7-5
7.2.4 INPUT FUNCTIONS..................................................................... 7-5
7.2.5 THERMISTOR INPUT TESTS ..................................................... 7-6
7.2.6 POWER FAIL TEST..................................................................... 7-6
8. MM2PC®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 MM2PC®
8.2.1 SOFTWARE INSTALLATION/UPGRADE.................................... 8-3
8.3 CONFIGURATION
8.3.1 CONFIGURING MM2PC®............................................................ 8-4
8.3.2 MM2PC®PROGRAM MENUS..................................................... 8-6
8.4 USING MM2PC®
8.4.1 SAVING SETPOINTS TO A FILE ................................................ 8-7
8.4.2 MM2 FIRMWARE UPGRADES.................................................... 8-8
8.4.3 LOADING SETPOINT FILES....................................................... 8-9
8.4.4 ENTERING SETPOINTS ........................................................... 8-10
8.4.5 VIEWING ACTUAL VALUES ..................................................... 8-11
8.5 CHASSIS MOUNT UNITS
8.5.1 DESCRIPTION........................................................................... 8-13
8.5.2 SETTING THE BAUD RATE AND PARITY ............................... 8-13
9. STARTER TYPES 9.1 FV NON-REVERSING STARTER
9.1.1 DESCRIPTION............................................................................. 9-1
9.1.2 MM2 SEQUENCES...................................................................... 9-1
9.2 FV REVERSING STARTER
9.2.1 DESCRIPTION............................................................................. 9-3
9.2.2 MM2 SEQUENCES...................................................................... 9-4
9.2.3 NOTES......................................................................................... 9-4
9.3 TWO SPEED STARTER
9.3.1 DESCRIPTION............................................................................. 9-6
9.3.2 MM2 SEQUENCES...................................................................... 9-7
9.4 SLIP RING STARTER
9.4.1 DESCRIPTION........................................................................... 9-11
9.4.2 MM2 SEQUENCES.................................................................... 9-12
9.5 PRIMARY RESISTANCE STARTER
9.5.1 DESCRIPTION........................................................................... 9-14
9.5.2 MM2 SEQUENCE...................................................................... 9-15

GE Power Management
MM2 Motor Manager 2 v
TABLE OF CONTENTS
9.6 INVERTER STARTER
9.6.1 DESCRIPTION............................................................................9-17
9.6.2 MM2 SEQUENCES.....................................................................9-18
9.7 AUTOTRANSFORMER OPEN TRANSITION STARTER
9.7.1 DESCRIPTION............................................................................9-20
9.7.2 MM2 SEQUENCES.....................................................................9-21
9.8 AUTOTRANSFORMER CLOSED TRANSITION STARTER
9.8.1 DESCRIPTION............................................................................9-24
9.8.2 MM2 SEQUENCES.....................................................................9-25
9.9 PART WINDING STARTER
9.9.1 DESCRIPTION............................................................................9-28
9.9.2 MM2 SEQUENCE.......................................................................9-28
9.10 WYE-DELTA OPEN TRANSITION STARTER
9.10.1 DESCRIPTION............................................................................9-29
9.10.2 MM2 SEQUENCES.....................................................................9-30
9.11 WYE-DELTA CLOSED TRANSITION STARTER
9.11.1 DESCRIPTION............................................................................9-32
9.11.2 MM2 SEQUENCE.......................................................................9-33
9.12 DUTY/STANDBY STARTER
9.12.1 DESCRIPTION............................................................................9-35
9.12.2 MM2 SEQUENCES.....................................................................9-35
9.12.3 NOTES........................................................................................9-36
9.13 SOFT STARTER
9.13.1 DESCRIPTION............................................................................9-38
9.13.2 MM2 SEQUENCE.......................................................................9-38
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
A. MM2 COMMISSIONING A.1 COMMISIONING SUMMARY
A.1.1 DESCRIPTION............................................................................. A-1
B. MM2 FAQ B.1 MM2 FAQ
B.1.1 QUESTIONS AND ANSWERS....................................................B-1

vi MM2 Motor Manager 2
GE Power Management
TABLE OF CONTENTS
C. DO’S AND DONT’S C.1 DO’S AND DONT’S
C.1.1 CHECKLIST .................................................................................C-1
D. ASYMMETRICAL
CURRENT D.1 ASYMMETRICAL CURRENT
D.1.1 OVERVIEW..................................................................................D-1
E. CT ISOLATION E.1 CT ISOLATION
E.1.1 MM2 CT WITHSTAND.................................................................E-1
E.1.2 CT SIZE AND SATURATION.......................................................E-1
F. FIGURES AND TABLES F.1 LISTS
F.1.1 LIST OF FIGURES....................................................................... F-1
F.1.2 LIST OF TABLES......................................................................... F-2
G. MISCELLANEOUS G.1 EU DECLARATION OF CONFORMITY
0.1 GE POWER MANAGEMENT WARRANTY

GE Power Management
MM2 Motor Manager 2 1-1
1 INTRODUCTION 1.1 OVERVIEW
1
1 INTRODUCTION 1.1 OVERVIEW 1.1.1 DESCRIPTION
The MM2 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 in every MM2 simplify maintenance and plant expansion. One MM2 is required for
every starter unit in the MCC. The contactor can be energized and de-energized using the MM2’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 com-
pletely controlled by the MM2 using the two contactor outputs.
Motor protection is included for the most common causes of failure to prevent costly shutdowns and
rewinds. These include 3 phase overload, stalled rotor, ground fault and loss of phase.
A two wire RS485 Modbus protocol communications port is provided for high-speed communications
with a complete line-up of MCCs. Any MM2 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 process possible. Statistical recording of running hours and
number of starts and trips assists with predictive maintenance scheduling.
1.1.2 FEATURES
The MM2 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 basic MM2 comes with 3 phase overload protection (49/51), single phase, 4 control inputs
(Start, Stop, Local Isolator, Contactor A status) plus 2 programmable inputs. Depending upon which
option is ordered, the following additional features are available:
•20
×2 alphanumeric display (Option PD)
• 8 additional programmable inputs (Option 1)
• 2 additional electromechanical relays: Aux Relay 1 and Aux Relay 2 (Option 1)
• 4 to 20 mA process analog input (Option 1)
• programmable undervoltage restart of motors following an undervoltage condition (Option 1)
• diagnostics which includes pretrip data and historical statistics (Option 1)
• 2nd contactor control (wye/delta, two speed, reversing, etc.) which includes all timers, relays and
control inputs (Option 2)
• ground fault trips (50G/51G) (Option 2)
• stalled rotor protection (48) (Option 2)
• single voltage input which allows the MM2 to calculate and display kW and kWh (Option 2)
• undercurrent/underpower protection (37) (Option 2)
• thermistor (49) input which accepts PTC and NTC thermistor types (Option 2)
• overvoltage (59) and undervoltage (27) protection (Option 2)

1-2 MM2 Motor Manager 2
GE Power Management
1.2 ORDERING 1 INTRODUCTION
11.2 ORDERING 1.2.1 ORDER CODES
This instruction manual describes the features of a MM2 with all options included.
All models contain three phase overload protection (49/51), single phase, 4 control inputs
(start, stop, local isolator, contactor A status), plus two programmable inputs and one output
relay. The control voltage can be changed in the field.
a) MOUNTING
Chassis Mount: “Black box” version of the MM2 mounted inside the MCC starter.
Panel Mount with Display: Mounted on a panel with a 20 ×2 display, LEDs, and keypad. This fea-
ture is only available with both options
b) OPTION 1
Process Control and Process Inputs: Includes 10 programmable switch inputs, 2 extra electrome-
chanical relays (Aux1 and Aux2), and a 4 to 20 mA input.
Undervoltage Auto-Restart: Programmable undervoltage restart following undervoltage condition.
Diagnostics: Alarms, pretrip data, and historical statistics about the motor or drive performance.
c) OPTION 2
2nd Contactor Control: Includes all timers, contactor A and B relays, and 2 programmable switch
inputs for two-contactor starter types such as wye/delta, two-speed, and reversing.
Enhanced Protection: Includes ground fault, stalled rotor, and undercurrent protection.
Power (kW): Includes a single VT input allowing for calculation of kW and kWhrs, as well as under-
power alarm.
Thermistor: Includes a thermistor input with alarm or trip settings for NTC and PTC type thermistors.
Table 1–1: SELECTION GUIDE
MM2 g g g g
Base Unit MM2 | | | | Product Family
Mounting PD ||| Panel Mount with Display (only available with both options)
C | | | Chassis Mount (Black Box)
Option 1 1 | | Option 1: Process control, 10 process inputs, undervoltage
autorestart, diagnostics
Option 2 2 | | Option 1: Enhanced protection, power (kW), thermistor, 2nd
contactor control, 2 process inputs
Power 120 120 V AC Control Voltage
240 240 V AC Control Voltage
NOTE
NOTE

GE Power Management
MM2 Motor Manager 2 1-3
1 INTRODUCTION 1.2 ORDERING
1
1.2.2 ACCESSORIES
MM2PC®Software: Software package to aid in setting up MM2 operating parameters (free)
RS-232/485: RS232 to RS485 converter box designed for harsh industrial environments
5A Phase CT: 50,75,100,150,200,250,300,350,400,500,600,750,1000
1A Phase CT: 50,75,100,150,200,250,300,350,400,500,600,750,1000
50:0.025 Ground CT: For sensitive ground detection on high resistance grounded systems
Collar: For reduced depth mounting
1.2.3 SPECIAL ORDER
MOD601 – 240 V AC Switch Inputs: Allows use of external 240 VAC supply to power switch inputs.
MOD602 – 24 to 48 V DC Switch Inputs: Allows use of external 24 to 48 V DC supply to power
switch inputs.
MOD603 – ESD Relay: Converts AUX Relay 2 into an Emergency Shutdown Relay.
MOD605 – Removable Rear Terminals: Allows terminals 13 to 58 to be unplugged from the MM2.
MOD610 – Conformal: Provides protection in harsh environments.
MOD613 – 240 VAC VT Input: Allows 240 V AC to be applied to the VT input.
MOD614 – 7200 VT Primary Setting: VT PRIMARY setpoint up to 7200 V and Variable Overload
Curve setting.
MOD615 – 7200 VT Primary Setting: VT PRIMARY setpoint up to 7200 V and Backspin Timer.

1-4 MM2 Motor Manager 2
GE Power Management
1.3 SPECIFICATIONS 1 INTRODUCTION
11.3 SPECIFICATIONS 1.3.1 MM2 SPECIFICATIONS
Design and specifications are subject to change without notice.
PHASE CURRENT INPUTS
CONVERSION: true RMS, sample time 1.67ms
RANGE: 0.1 to 8 ×PHASE CT PRIMARY AMPS setpoint
FULL SCALE: 8 ×PHASE CT PRIMARY AMPS setpoint
ACCURACY: ±2% of PHASE CT PRIMARY AMPS setpoint or ±2% of reading, whichever is greater
GROUND FAULT CURRENT INPUT
CONVERSION: true RMS, sample time 1.67 ms
RANGE: 0.1 to 1.0 ×G/F CT PRIMARY AMPS setpoint (for 5 A secondary CT)
0.5 to 15.0 A (for 50:0.025 CT)
FULL SCALE: 1.5 ×G/F CT PRIMARY AMPS setpoint (for 5 A secondary CT)
15 A (for 50:0.025 CT)
ACCURACY: for 5A CT: ±2% of full scale (5A CT)
for 50:0.025 CT: ±0.10 A (0.0 to 3.99 A)
±0.20 A (4.00 to 15.00 A)
VOLTAGE INPUT / POWER READING
CONVERSION: true RMS, sample time 1.67ms
VOLTAGE FULL SCALE: 1.5 ×VT Primary
VOLTAGE ACCURACY: ±2% of VT Primary or ±2% of reading, whichever is greater
POWER ACCURACY: ±5% of nominal or ±5% of reading, whichever is greater
INPUT VOLTAGE: Nominal: 120 V AC or 110 V AC
Maximum: 150 V AC
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 seconds
SINGLE PHASE
RANGE: greater than 30% U/B
ACCURACY: ± 2 percentage points
TRIP DELAY: 5 seconds ± 1 second
NOTE

GE Power Management
MM2 Motor Manager 2 1-5
1 INTRODUCTION 1.3 SPECIFICATIONS
1
CALCULATION METHOD: if I
AV
≥
I
FLC
:
if
I
AV
<
I
FLC
:
where
I
AV
= average phase current
I
M
= current in a phase with maximum deviation from I
AV
I
FLC
= MOTOR FULL LOAD CURRENT setpoint
THERMAL COOLING TIMES
RANGE: 5 to 1080 min when motor is stopped;
50% of motor stopped value when motor is running.
ACCURACY: ± 1 minute
UNDERCURRENT
RANGE: 10 to 100% ×motor FLC or OFF
DELAY RANGE: 1 to 60 seconds
ACCURACY: ±1 second
STALLED ROTOR
RANGE: 1.15 to 4.50 ×FLC or OFF
DELAY RANGE: 0.5 to 5 seconds
ACCURACY: ±0.5 second
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 20 mA
ACCURACY: ±1% of full scale
ALARM: programmable 4 to 20 mA
TRIP: programmable 4 to 20 mA
COMMUNICATIONS
TYPE: RS485 2 wire, half duplex
BAUD RATE: 1200 to 19200 baud
PROTOCOL: Modbus RTU
FUNCTIONS: Read/write setpoints, Read coil status, Read actual values, Read device status,
Execute commands, Loopback Test
UB%
I
M
I
AV
–
i
AV
---------------------- 100%
×
=
UB%
I
M
I
AV
–
i
AV
---------------------- 100%
×
=

1-6 MM2 Motor Manager 2
GE Power Management
1.3 SPECIFICATIONS 1 INTRODUCTION
1MM2 CONTACTOR A & B AND AUX 2 OUTPUT RELAY CONTACTS
CONFIGURATION: CONTACTOR A AND B: Form A
AUX RELAY 2: Form C
CONTACT MATERIAL: Silver Alloy (AgCdO)
MAX. OPERATING VOLTAGE: 280 V AC, 250 V DC
MAXIMUM PERMISSIBLE LOAD: 5 V DC, 100 mA
MM2 AUX 1 OUTPUT RELAY CONTACTS
CONFIGURATION: Dual Form C
CONTACT MATERIAL: Silver Alloy (AgCdO)
MAX. OPERATING VOLTAGE: 280 V AC, 125 V DC
UNDERVOLTAGE – SUPPLY VOLTAGE
UNDERVOLTAGE: 65% of nominal (120 V AC or 240 V AC);
Immediate restart for maximum dip time of 0.1 to 0.5 seconds or OFF;
Delayed restart for maximum dip time of 0.1 to 10.0 seconds or UNLIMITED time
DELAY RESTART RANGE: 0.2 to 300 seconds
DELAY RESTART ACCURACY: ±0.2 seconds
VOLTAGE BREAK MAKE/CARRY
CONTINUOUS MAKE/CARRY 0.2 seconds
RESISTIVE
30 V DC 10 A
10 A 30 A
125 V DC 0.5 A
250 V DC 0.3 A
INDUCTIVE
(L/R = 7 ms)
30 V DC 5 A
125 V DC 0.25 A
250 V DC 0.15 A
RESISTIVE 120 V AC 10 A
240 V AC
INDUCTIVE
(PF = 0.4) 120 V AC 10 A
225 V AC 8 A
VOLTAGE BREAK MAKE/CARRY
CONTINUOUS MAKE/CARRY 0.2 seconds
RESISTIVE 30 V DC 5 A
5 A 15 A
125 V DC 0.25 A
INDUCTIVE
(L/R = 7 ms) 30 V DC 2.5 A
125 V DC 0.1 A
RESISTIVE 120 V AC 5 A
240 V AC
INDUCTIVE
(PF = 0.4) 120 V AC 5 A
225 V AC 3 A

GE Power Management
MM2 Motor Manager 2 1-7
1 INTRODUCTION 1.3 SPECIFICATIONS
1
CT BURDEN
CT WITHSTAND (1 A / 5 A PHASE CTs; 5 A GROUND CT)
CT WITHSTAND (50:0.025 A GROUND CT)
CONTINUOUS: 150 mA
MAXIMUM: 12 A for 3 cycles
SUPPLY VOLTAGE
AC NOMINAL: 120 V AC, range 80 to 135 V AC
240 V AC, range 150 to 250 V AC
FREQUENCY: 50/60 Hz
POWER CONSUMPTION: 25 VA (maximum), 7 VA (nominal)
TYPE TESTS
TRANSIENTS: ANSI/IEEE C37.90.1 Oscillatory/Fast Risetime Transients
IEC 801-4 Electrical Fast Transient/Burst Requirements
IMPULSE: IEC 255-5 5 kV Impulse Voltage Test
RFI: 150 MHz, 450 MHz 5 W Handheld Transmitter at 25 cm
STATIC: IEC 801-2 Electrostatic Discharge
HI-POT: 1500 V, 1 minute; all inputs > 30 V
CT INPUT CURRENT BURDEN
VA OHMS
1 A PHASE CT
1 A 0.009
0.015 A 0.2
20 A 3.5
5 A PHASE CT
5 A 0.04
0.00225 A 0.9
100 A 16
5 A GROUND CT
5 A 0.04
0.00225 A 1.1
100 A 17
50:0.025
GROUND CT
0.025 A 0.07 116
0.1 A 1.19 119
0.5 A 30.5 122
CT INPUT 1 SEC 5 SEC CONTINUOUS
1 A PHASE CT
100 ×CT 40 ×CT 3 ×CT5 A PHASE CT
5 A GROUND CT

1-8 MM2 Motor Manager 2
GE Power Management
1.3 SPECIFICATIONS 1 INTRODUCTION
1ENVIRONMENT/GENERAL INFORMATION
POLLUTION DEGREE: 2
OVERVOLTAGE CATAGORY: 2
INSULATION VOLTAGE: 300 V
OPERATING TEMPERATURE RANGE: 0°C to 60°C
DUST & MOISTURE RATING: NEMA Type 12 and 12K
IP CLASS: IEC 529 - IP53
WEIGHT
MAX WEIGHT: 4 lbs. (1.8 kg)
SHIPPING BOX SIZE: 8.30” (211 mm) ×5.625” (143 mm) ×5.80” (147 mm)
FUSE TYPE/RATING
0.5 A; 250 V 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
CSA: Approved File No. LR41286
UL: Recognized File No. E83849
QUALITY ASSURANCE SYSTEM: Registered by QMI to CSA CAN3.Z299.3-1985 & ISO 9001-1994
It is recommended that all MM2 relays are powered up at least once per year to avoid
deterioration of electrolytic capacitors in the power supply.
NOTE

GE Power Management
MM2 Motor Manager 2 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 MM2. Use either the #8-32 or #6 ×½” mounting screws
provided to mount the MM2 to the panel.
Figure 2–1: MM2 MOUNTING INSTRUCTIONS

2-2 MM2 Motor Manager 2
GE Power Management
2.1 MOUNTING 2 INSTALLATION
2
The dimensions for the standard MM2 and the MM2 with reduced mounting collar are shown below:
Figure 2–2: MM2 DIMENSIONS
Figure 2–3: MM2 WITH DEPTH REDUCTION COLLAR DIMENSIONS