GE MOTOR MANAGER 2 User Manual

6-12 MM2 Motor Manager 2
GE Power Management
6.2 MODBUS FUNCTIONS 6 COMMUNICATIONS
6
6.2.8 FUNCTION CODE 10H
Modbus Implementation: Preset Multiple Registers
MM2 Implementation: Store Multiple Setpoints
This function code allows multiple Setpoints to be stored into the MM2 memory. Modbus "registers"
are 16-bit (two byte) values transmitted high order byte first. Thus all MM2 setpoints are sent as two
bytes. The maximum number of Setpoints that can be stored in one transmission is dependent on
the slave device. Modbus allows up to a maximum of 60 holding registers to be stored. The MM2
response to this function code is to echo the slave address, function code, starting address, the num-
ber of Setpoints stored, and the CRC.
For example, consider a request for slave 17 to store the value 01F4 to setpoint address 1028 and
the value 2710 to setpoint address 1029. After the transmission in this example is complete, MM2
slave 17 will have the following setpoints information stored:
The master/slave packets have the following format:
Address Data
1028 01F4
1029 2710
Table 6–8: MASTER/SLAVE PACKET FORMAT FOR FUNCTION CODE 10H
MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION
SLAVE ADDRESS 1 11 message for slave 17
FUNCTION CODE 1 10 store setpoints
DATA STARTING ADDRESS 2 10 28 setpoint address 1028
NUMBER OF SETPOINTS 2 00 02 2 setpoints = 4 bytes total
BYTE COUNT 1 04 4 bytes of data
DATA 1 2 01 F4 data for setpoint address 1028
DATA 2 2 27 10 data for setpoint address 1029
CRC 2 33 23 CRC error code
SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION
SLAVE ADDRESS 1 11 message from slave 17
FUNCTION CODE 1 10 store setpoints
DATA STARTING ADDRESS 2 10 28 setpoint address 1028
NUMBER OF SETPOINTS 2 00 02 2 setpoints
CRC 2 C7 90 CRC error code

GE MOTOR MANAGER 2 Specifications

General

Mounting	DIN Rail
Storage Temperature	-40°C to +85°C
Protection Class	IP20
Communication Protocol	Modbus RTU, Modbus TCP/IP
Communication Ports	RS485, Ethernet
Supply Voltage	100-240 VAC
Power Consumption	<10W
Operating Temperature	-20°C to +70°C
Relative Humidity	5% to 95% (non-condensing)
Weight	0.5 kg

Summary

1 INTRODUCTION

1.1 OVERVIEW

Provides a general introduction to the MM2, covering its description and key features.

1.2 ORDERING AND ACCESSORIES

Details how to order the MM2, including order codes, accessories, and special order options.

1.3 SPECIFICATIONS

Outlines the technical specifications of the MM2, including input details, accuracy, and operating parameters.

2 INSTALLATION

2.1 MOUNTING

Describes how to mount the MM2 to a panel using specified screws and provides panel cutout dimensions.

2.2 INPUTS AND OUTPUTS

Details the various inputs and outputs of the MM2, including CTs, voltage, thermistor, analog, relays, and switch inputs.

3 HARDWARE

3.1 FACEPLATE FUNCTIONS

Explains the functions of the MM2 front panel, including the message display and indicator LEDs.

3.2 KEYPAD FUNCTIONS

Describes the functions of the MM2 keypad, covering setpoint/actual value keys, operational, and navigation keys.

3.3 THEORY OF OPERATION

Provides a hardware overview of the MM2, detailing its microcontroller, memory, display module, and input/output circuitry.

4 SETPOINTS

4.1 OVERVIEW

Introduces setpoints, explaining how to view/alter them and listing common abbreviations used.

4.2 S1 CONFIGURATION

Covers MM2 configuration setpoints for communications, motor identification, starter types, and CT/VT inputs.

4.3 S2 PROTECTION

Details setpoints for motor protection including thermal, ground fault, overload curves, load, and voltage protection.

4.4 S3 PROCESS

Covers process-related setpoints for programmable inputs, interlock names, stop configuration, and analog inputs.

4.5 S4 CONTROL

Details setpoints for control features like undervoltage auto-restart and auxiliary relay configurations.

4.6 S5 MONITORING

Covers setpoints for monitoring and motor maintenance, including plant condition and preset counters/timers.

4.7 S6 FACTORY DATA

Provides factory data including firmware versions, model identification, and service information.

5 ACTUAL VALUES

5.1 OVERVIEW

Introduces actual values, explaining their organization and how to select default messages.

5.2 A1 DATA

Displays real-time data including motor status, current, load, process data, and programmable messages.

5.3 A2 STATUS

Provides status information after alarms or trips, covering trip data, alarm data, and motor status.

5.4 A3 INPUTS

Details the 16 switch inputs and their status, showing OPEN or CLOSED states for various inputs.

5.5 A4 STATISTICS

Provides detailed running time and accumulated trip counts, including timers and counters.

6 COMMUNICATIONS

6.1 MM2 MODBUS PROTOCOL

Details the MM2's implementation of Modbus RTU, covering overview, electrical interface, and data formats.

6.2 MODBUS FUNCTIONS

Explains various Modbus function codes (01H to 10H) used for reading status, setpoints, and executing operations.

6.3 ERROR RESPONSES

Describes the MM2's error response codes for illegal function, data address, or data value.

6.4 APPLICATIONS

Covers applications of Modbus functions, including performing commands, storing addresses, and using the memory map.

6.5 MEMORY MAP

Details the MM2's data structure, explaining setpoints and actual values and providing a memory map table.

6.6 DATA FORMATS

Defines data formats (F1-F113) used in Modbus communications for MM2 parameters.

7 TESTING

7.1 INJECTION TESTING

Describes primary and secondary injection testing methods to verify MM2 operation and wiring.

7.2 FUNCTIONAL TESTS

Covers functional tests for phase current, unbalance, ground fault, inputs, thermistor, and power fail.

8 MM2PC® SOFTWARE

8.1 OVERVIEW

Introduces the MM2PC® software for easier setpoint management, firmware upgrades, and data viewing.

8.2 INSTALLING MM2PC®

Provides step-by-step instructions for installing or upgrading the MM2PC® software from a CD or website.

8.3 CONFIGURATION

Details configuring MM2PC® communication settings, including COM port, baud rate, parity, and control type.

8.4 USING MM2PC®

Explains how to use MM2PC® for saving setpoints, upgrading firmware, loading files, entering setpoints, and viewing actual values.

8.5 CHASSIS MOUNT UNITS

Addresses communication setup for chassis mount MM2 units, focusing on baud rate and parity configuration.

9 STARTER TYPES

9.1 FV NON-REVERSING STARTER

Describes the full voltage, across-the-line non-reversing starter type and its basic operation and MM2 sequences.

9.2 FV REVERSING STARTER

Describes the full voltage, across-the-line reversing starter and its operational logic with timing relays and MM2 sequences.

9.3 TWO SPEED STARTER

Explains the operation of a two-speed starter, including low speed, high speed, and transition sequences.

9.4 SLIP RING STARTER

Describes the slip ring starter for wound rotor motors, including secondary resistance and MM2 sequences.

9.5 PRIMARY RESISTANCE STARTER

Describes the primary resistance starter for reduced voltage starting and its MM2 sequences.

9.6 INVERTER STARTER

Describes the inverter starter, explaining its operation and the MM2 sequences for ramp-up and ramp-down.

9.7 AUTOTRANSFORMER OPEN TRANSITION STARTER

Describes the autotransformer open transition starter, outlining reduced voltage starting and MM2 sequences.

9.8 AUTOTRANSFORMER CLOSED TRANSITION STARTER

Describes the autotransformer closed transition starter, detailing reduced voltage starting and MM2 sequences.

9.9 PART WINDING STARTER

Describes the part winding starter functionality, noting it is currently under review, and its MM2 sequence.

9.10 WYE-DELTA OPEN TRANSITION STARTER

Describes the wye-delta open transition starter, outlining reduced voltage starting and MM2 sequences.

9.11 WYE-DELTA CLOSED TRANSITION STARTER

Describes the wye-delta closed transition starter, detailing reduced voltage starting and MM2 sequences.

9.12 DUTY/STANDBY STARTER

Describes the duty/standby starter type, allowing MM2 to control two motors in manual or automatic modes.

9.13 SOFT STARTER

Describes the soft starter, explaining its operation and the MM2 sequences for ramp-up and ramp-down.

10 CONTROL WIRE APPLICATIONS

10.1 TWO WIRE CONTROL

Describes the two-wire control scheme using a maintained contact in series with the starter coil for motor operation.

10.2 HAND/OFF/AUTO CONFIGURATION

Details control schemes for 2-wire and 3-wire HAND/OFF/AUTO configurations.

10.3 HAND/AUTO CONFIGURATION

Describes 3-wire hand / 2-wire auto control schemes and their operational procedures.

APPENDIX A A.1 COMMISSIONING SUMMARY

A.1.1 DESCRIPTION

Lists default setpoint values for MM2 configuration, protection, process, control, monitoring, and factory data.

S1: SYSTEM CONFIGURATION

Lists default values for System Configuration setpoints including communications, motor identification, starter, and CT/VT inputs.

THERMISTOR & FAULT MODE

Lists default values for Thermistor and Fault Mode setpoints, covering resistance, trip/alarm settings, and fault handling.

MOTOR PROTECTION OPTIONS & LOAD PROTECTION

Lists default values for motor protection options and load protection parameters like undercurrent, underpower, and acceleration.

UNDER/OVERVOLTAGE PROTECTION & S3: PROCESS

Lists default values for voltage protection and process programmable inputs, including interlock functions.

S4: CONTROL & S5: MONITORING

Lists default values for control setpoints like undervoltage restart and monitoring setpoints like motor greasing interval.

APPENDIX B B.1 MM2 FAQ

B.1.1 QUESTIONS AND ANSWERS

Addresses frequently asked questions about MM2 features, protection, and operational conditions.

MM2 Communications Issues

Troubleshoots common MM2 communication problems, including PLC network connectivity and analog device interface.

APPENDIX C C.1 DO’S AND DONT’S

C.1.1 CHECKLIST

Provides a checklist of essential steps and practices for proper MM2 grounding and communications wiring.

d) SWITCH INPUTS

Explains MM2 switch input operation at 120/240V AC and recommends using a common source and fused external source.

e) THERMISTOR AND ANALOG INPUTS

Recommends using shielded cable for thermistor and analog inputs due to low voltage levels to minimize noise.

f) STOP SWITCH INPUT

States the STOP switch input MUST be energized for MM2 availability and requires a jumper for external contactor sealing.

g) CONTACTOR STATUS FEEDBACK

Emphasizes MM2 must receive feedback within 1 second of closing contactors or an OPEN CONTROL CIRCUIT alarm will occur.

APPENDIX D D.1 ASYMMETRICAL CURRENT

D.1.1 OVERVIEW

Explains current phase difference with voltage and how RMS current varies based on voltage application timing.

MOTOR START THREE PHASE CURRENT

Discusses concerns regarding asymmetrical current during motor starts and its effect on relays and CTs.

APPENDIX E E.1 CT ISOLATION

E.1.1 MM2 CT WITHSTAND

Explains the importance of CT withstand for high current faults and systems with limited fault current capacity.

E.1.2 CT SIZE AND SATURATION

Explains methods to acquire CT characteristics and how to interpret CT ratings like 2.5C100.

Figure E–1: EXCITATION CURVES

Shows a typical CT excitation curve, illustrating secondary exciting voltage versus secondary exciting current.

APPENDIX F F.1 LISTS

F.1.1 LIST OF FIGURES

Lists figures related to MM2 mounting, dimensions, wiring diagrams, setpoints, testing, and software.

F.1.2 LIST OF TABLES

Lists tables related to selection guides, overload curves, Modbus packet formats, memory maps, and data formats.

APPENDIX G G.1 EU DECLARATION OF CONFORMITY

EU DECLARATION OF CONFORMITY

Declares conformity to EU directives and lists applicable standards for safety and EMC.

Manufacturer’s Name and Address

Identifies the manufacturer as General Electric Power Management Inc. and provides their address.

Manufacturer’s Representative in the EU

Lists the EU representative's contact details for GE Power Management.

Declaration of Conformity

Declares that the specified equipment conforms to the listed directives and standards, signed by management.

0.1 GE POWER MANAGEMENT WARRANTY

GE POWER MANAGEMENT RELAY WARRANTY

States the warranty terms for GE Power Management relays, covering defects in material and workmanship for 24 months.