Description and Installation
NION Power and Serial Data Connections
24
NION-16C48M Installation & Operation Manual - P/N: 53347:Rev: A1 5/5/09
Each terminal board has four rows of plug-in screw terminal connectors to land input and output
points. All inputs are rated at 5VDC nominal, 2.5mA maximum current and 500 ohms maximum
resistance. The inputs and outputs map to the connectors as described by the following diagrams:
Figure 2.11 Terminal I/O Mapping
Figure 2.12 I/O Point Connections
Inputs 1-8
Inputs 9-16
Inputs 17-24
Outputs 1-8
Inputs 25-32
Inputs 33-40
Inputs 41-48
Outputs 9-16
Terminal board 1
Terminal board 2
P1
P2
P1
P2
P4
P3
P4
P3
NOTE:
For each terminal connector, the inputs and outputs are numbered from left to right.
Ground
A B C D E F G H
Input terminals (A-H represent any 8 inputs)
Output terminals (A-H represent any 8 outputs)
A B C D E F G H
Input
R-1K resistor
R-3.3K resistor
Ground
Input
R-3.3K resistor
4-State
2-State
Ground
NOTE:
Input ground is common except for inputs 21-24 and 45-48 when they are used for
switched voltage monitoring
.
Four-state NO or NC are wired the same for supervision
.
Two-state
NO and NC are not supervised and require no resistors.
