GE MM300 Manual page 149
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)
Table of Contents
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CHAPTER 4: FIELDBUS INTERFACE
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE
ATTRIBUTE NO.
DESCRIPTION
(HEX VALUE)
26
Number of UV Restarts
27
Motor Running Hours
28
Cause of Last Trip
29
Time of Last Trip
2A
Date of Last Trip
2B
Phase A Pre Trip Current
2C
Phase B Pre Trip Current
2D
Phase C Pre Trip Current
2E
Pre Trip Ground Current
2F
Pre Trip Motor Load
30
Pre Trip Current Unbalance
31
Pre Trip Vab Voltage
32
Pre Trip Vbc Voltage
33
Pre Trip Vca Voltage
0x
Pre Trip Van Voltage
35
Pre Trip Vbn Voltage
36
Pre Trip Vcn Voltage
37
Pre Trip System Frequency
38
Pre Trip Real Power
39
Pre Trip Reactive Power
3A
Pre Trip Apparent Power
3B
Pre Trip Power Factor
3C
Trip Status 3
3D
Trip Status 2
3E
Trip Status 1
3F
Alarm Status 3
40
Alarm Status 2
41
Alarm Status 1
42
Overload Lockout Block
43
Start Timer 1
44
Start Timer 2
45
Start Timer 3
46
Start Timer 4
47
Start Timer 5
48
Time Between Starts Lockout Time
49
Restart Block Lockout
4A
Starts Hour Block Lockout Time
4B
Motor Status
4C
Motor Thermal Capacity Used
4D
Contact Input 64 - 33 Status
4E
Contact Input 32-1 Status
4F
Contact Output 32-1 Status
DEVICENET PROTOCOL
UNIT
FORMAT
SIZE IN
CODE
BYTES
None
F1
2
Hours
F9
4
None
FC134
2
None
F19
4
None
F18
4
Amps
F10
4
Amps
F10
4
Amps
F10
4
Amps
F10
4
%
F1
2
%
F1
2
Volts
F1
2
Volts
F1
2
Volts
F1
2
Volts
F1
2
Volts
F1
2
Volts
F1
2
Hz
F3
2
Kw
F13
4
Kvar
F13
4
Kva
F2
2
None
F21
2
None
FC185
4
None
FC184
4
None
FC183
4
None
FC181
4
None
FC180
4
None
FC179
4
Reserved
2
Secs
F1
2
Secs
F1
2
Secs
F1
2
Secs
F1
2
Secs
F1
2
Secs
F1B
2
Secs
F1
2
Secs
F1
2
None
FC129
1
%
F1
2
None
FC168
4
None
FC167
4
None
FC167
4
4–71
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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