Delta MM300 Instruction Manual Page 9

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CHAPTER 1: INTRODUCTION OVERVIEW
MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL 1–3
Figure 2: Single line diagram
Table 1: MM300 protection functions
RS485 - Modbus RTU
Ethernet - Modbus TCP/IP
Profibus/DeviceNet
52
27
59 47
METERING
V, A, W, var, VA , PF, Hz
27X
51R
49
37
66 46
50G
51G
49
MOTOR
LOAD
Stator RTDs
Bearing RTDs
Phase CT 3
Ground CT 1
Power Fuse
BUS
MM300
MOTOR MANAGEMENT SYSTEM
Temperature
Thermistor
Control PT
Contactor
Control
fuse
Direct voltage inputs
(690 V AC maximum)
Ambient air
RTD
Expansion module,
two cards per module,
maximum of two modules
38
Optional
three-phase
voltage
card
Options:
Six inputs & two form-A outputs (max 5 cards)
?
?
Three-phase voltage card (max 1 card)
Options:
Three RTDs - 100 ohm Platinum (max 2 cards)
?
?
Four form-C contact outputs (max 4 cards)
853739A2.CDR
Six inputs and two outputs (standard)
Optional RTD card
ANSI device Description
27X Undervoltage, auxiliary input
27 Undervoltage, three-phase
37 Undercurrent and underpower
38 Bearing temperature RTD
46 Current unbalance
47 Voltage phase reversal
49 Thermal overload
50G Ground instantaneous overcurrent
51G Ground time overcurrent
51R Locked/stalled rotor, mechanical jam
59 Overvoltage, three-phase
66 Starts per hour and time between starts
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