GE MM300 Manual page 70
Motor management system/low voltage motor protection and control
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Also See for MM300:
- Instruction manual (198 pages) ,
- Quick start manual (77 pages) ,
- Installation recommendations (21 pages)
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FORMAT CODES
2–62
Code
Type
Bit 4
Bit 5
Bit 6
Bit 7
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15
Bit 16
Bit 18
Bit 19
Bit 20
Bit 21
Bit 22
Bit 23
Bit 24
Bit 25
Bit 26
Bit 27
Bit 28
Bit 29
Bit 30
Bit 31
FC180
32 bits
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 6
Bit 7
Bit 8
Bit 12
Bit 13
Bit 14
Bit 15
Bit 17
Bit 18
FC181
32 bits
FC182
32 bits
FC183
32 bits
Bit 0
Bit 1
Bit 2
CHAPTER 2: RS485 INTERFACE (MODBUS RTU)
Definition
Phase Reversal Alarm
UnderPower Alarm
UnderVoltage Alarm
OverVoltage Alarm
UnderCurrent Alarm
Unbalance Alarm
RTD 1 Alarm
RTD 2 Alarm
RTD 3 Alarm
RTD 4 Alarm
RTD 5 Alarm
RTD 6 Alarm
RTD Open/Short Alarm
Process ILock A Alarm
Process ILock B Alarm
Process ILock C Alarm
Process ILock D Alarm
Process ILock E Alarm
Process ILock F Alarm
Process ILock G Alarm
Process ILock H Alarm
Process ILock I Alarm
Process ILock J Alarm
Drive Failed to Start
Inverter Failed
Drive Stop Failed
Alarm Status 2
Aux U/V Alarm
Self-Test Alarm
Fuse Fail Alarm
Open Ctrl Cct Alarm
Thermistor Alarm
External Start A Alarm
External Start B Alarm
Welded Contactor
Load Increase Alarm
Drive Greasing Alarm
Contactor Inspect Alarm
Max Stopped Alarm
Self-Test Alarm
Comm Fail Alarm
Alarm Status 3 (Reserved)
Alarm Status 4 (Reserved)
Trip Status 1
Any Trip
Thermal O/L Trip
Ground Fault Trip
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE
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Do you have a question about the MM300 and is the answer not in the manual?
Questions and answers
we have a problem with device MM300. it says that the device is invalid through the software and does not read the device. the communication is through RS 485. is it possible to give us an advice or send us some reccomendations or instructions?
For a GE MM300 device that is not recognized by software and communicates via RS485, follow these troubleshooting steps:
1. Ensure correct RS485 wiring:
- Use two-wire RS485 in a daisy chain configuration.
- Install a 120 Ohm resistor in series with a 1 nF ceramic capacitor at each end of the link.
- Use shielded wire and ground the shield at only one location.
2. Check device addressing and termination:
- Confirm proper device address and ensure no address conflicts.
- Verify that termination networks are correctly installed at both ends.
3. Confirm half-duplex communication:
- Ensure that the system supports half-duplex communication and not sending and receiving data simultaneously.
4. If using USB for setup (e.g., USB-to-RS485 converter) and the device is not recognized:
- Repeat the connection procedure 2–3 times.
- If still not recognized, uninstall the USB driver from Device Manager under modems.
- Disconnect the USB cable, wait at least 10 seconds, then reconnect.
- When prompted by the Hardware Wizard, select "No, not this time," then "Install the software automatically," and press "Continue Anyway."
- Finish the installation and check if the USB device appears in the setup software.
These steps help ensure proper hardware connection and correct software recognition of the MM300 device.
This answer is automatically generated