GE MM300 Instruction Manual page 10

OVERVIEW
BUS
Power Fuse
Contactor
Phase CT 3
Ambient air
Ground CT 1
RTD
Thermistor
MOTOR
1–4
Figure 1-1: Single line diagram
52
Control PT
Control
fuse
Direct voltage inputs
(690 V AC maximum)
Stator RTDs
Bearing RTDs
Temperature
LOAD
RS485 - Modbus RTU
Ethernet - Modbus TCP/IP
Profibus/Device et
Table 1-1: MM300 protection functions
ANSI device
27X
27
37
38
46
47
49
50G
51G
51R
59
66
27X
Six inputs and two outputs (standard)
Optional
three-phase
27 59 47
voltage
card
METERI G
V, A, W, var, VA, PF, Hz
51R 49 37 66 46
50G 51G
49
38
MM300
MOTOR MA AGEME T SYSTEM
Description
Undervoltage, auxiliary input
Undervoltage, three-phase
Undercurrent and underpower
Bearing temperature RTD
Current unbalance
Voltage phase reversal
Thermal overload
Ground instantaneous overcurrent
Ground time overcurrent
Locked/stalled rotor, mechanical jam
Overvoltage, three-phase
Starts per hour and time between starts
MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION
Expansion module,
two cards per module,
maximum of two modules
853739A2.CDR