User Manual

1640-N4X
1640-N4X Instruction Manual Rev. 0.0 Page 4 of 28
O
I
5A
O
I
5A
A
B
RS-485
Primary
A
B
+
RS-485 VDC
Primary Out
GROUND
VAC (L1)
NEU (L2)
4-20mA
INPUT
COMM
M
S
D
L
S
D
4-20mA
INPUT
COMM
M
S
D
L
S
D
4-20mA
INPUT
COMM
M
S
D
L
S
D
4-20mA
INPUT
COMM
M
S
D
L
S
D
4-20mA
INPUT
COMM
M
S
D
L
S
D
4-20mA
INPUT
COMM
M
S
D
L
S
D
4-20mA
INPUT
COMM
M
S
D
L
S
D
4-20mA
INPUT
COMM
M
S
D
L
S
D
VDC IN
COM 1
COM 2
ACV IN
+
L1
L2
E
A
B
S
A
B
S
FAULT ALARM3 ALARM2 ALARM1
NC NO NC NO NC NO NC NO
Alarm Reset Switch
Ground
Power and
Communications
Terminal Blocks
1640 Controller PCA
Alarm Relay Terminals
Up to eight (8)
Customer supplied modules.
Front Panel
Power
Supply
Figure 3 Unit Overview