Nortec MES2 User Manual Page 48

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MES2 Wiring Diagram
45 | Troubleshooting
Figure 27: MES2 Wiring Diagram
MES2 with Optional Modbus board
WIRING DIAGRAM
DIAGRAM NUMBER 2553788 Rev. B
DATE August 18, 2010
FILL
DRAIN
1
2
3
RS485/TTL
Install J26 For
Modbus Control
ON
OFF
Drain
1
2
3
Green LED
Yellow LED
2 or 3 electrode cylinder
Contactor
24 Vac
(by others)
L1
L2 L3
Primary
Terminal
Block
(by others)
NOTE: Dotted lines denote wiring by others with the exception of
Primary Voltage Wiring ( PVW ) units which will come with all
primary wiring to the cylinder and 10’ of wiring to run the electrical
back to the contactor
Capacity
adjust
Calibration
(Do not ajust!)
Control Signal
(0-10 Vdc, 2-10 Vdc)
(-) (+)
24 Vac Hot
ON/OFF
Safties
24 VAC Common
Modbus Interface
Board (1509592)
A
B
Common
1509591
Modulation:
Remove J10 for 0-10 VDC
Remove Jumper J10 and place it on J13 for 2-10VDC
R52
J7
J6
J5
J4
J3
J2
J1
Mains Voltage
Select Jumpers
J6 208V
J5 230V
J4 277V
J3 380-415V
J2 460V
J1 575V
HW Sensor Jumpers
J9 Low Voltage 200-277V
J8 High Voltage 380-600V
J9
J8
J10
J13
Fault
Indication
N.O
S
3 Amp
Fuse
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