Delta MM300 Instruction Manual Page 28

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CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION
MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL 2–9
NOTE
NOTE:
It is recommended that you install a circuit disconnection system for control power, near
the device, which should be easily accessible after installation of the unit. This is in case an
emergency power shut-down of the unit is required.
Figure 10: Typical module arrangement
2.2.1 Power supply module
The power supply module in slot A supplies control power to the MM300 system. A supply
voltage between 60 to 300 V AC or 84 to 250 V DC is required to power the MM300.
CAUTION
CAUTION:
Check the voltage rating of the unit before applying control power! Control power
outside of the operating range of the power supply will damage the MM300.
2.2.2 CPU module
The main CPU module and optional communications board is contained in slot B. This
module provides a Modbus RTU RS485 port, a thermistor input, and a 50:0.025 CBCT input.
The optional communications board provides Fieldbus and Ethernet ports.
2.2.2.1 Ground current input
The MM300 CPU module has a sensitive ground input suitable for a 50:0.025 CT. There is
also a residual ground input on the CT module (IO_A) with the same rating as the phase
current inputs. Only one ground CT input can be used at any time.
1. Wire gauge size remains constant; increased pitch distance reflects higher voltage
rating.
14
13
12
11
10
9
8
7
6
5
4
3
2
1
PSU
60-300 VAC
84-250 VDC
L
g
MULTILIN
LISTED
IND.CONT.EQ.
52TL
E200434
Technical Support:
Tel: (905) 294-6222
(North America) 1-800-547-8629
Fax: (905) 201-2098
www.GEMultilin.com
N
MS
NS
THERM RS485
V-
10/100
ETHERNET
GROUND
CT I/P
I
L
C
H
V+
+
C
+
FIELD BUS
8
7
6
5
4
3
2
1
ABCDE
F
GH
Slot position
Base unit Expansion modules
853749A1.CDR
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3
2
1
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R
SG
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