Wiring single-ended inputs – Rockwell Automation 1746-NI16V SLC 500 Analog I/O Modules User Manual

Page 11

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SLC 500™ Analog Input Modules 11

Publication 1746-IN001B-US-P

Wiring Single-Ended Inputs

The diagram below shows typical wiring for the 1746-NI16I module.

(1) There are two common terminals for all of the 16 current inputs. These two analog common terminals are

connected internally.

(2

All shield wires should be connected to chassis mounting screws.

(3) Unused channels should be connected to the analog common terminals (0 Volts).

(4) If separate shielded cables are used for each analog input channel, interposing terminal blocks are needed

to terminate up to 16 common wires. Then 1 to 4 common wires should be wired from the interposing
terminal block to the 2 common terminals on the 1746-NI16I module.

(5) The module does not provide loop power for analog inputs. Use a power supply that matches the transmitter

specifications.

(6) More than one power supply can be used if all supplies are class 2.

NOTE

Although the above diagram has 12 unused inputs, only 4
channels are shown connected to the Analog Com as an
example.

+

+

+

+

-

IN0

IN1

IN3

IN2

IN4

IN5

IN7

IN6

Analog
Com

Analog
Com

IN9

IN8

IN10

IN11

IN13

IN12

IN14

IN15

+

+

+

+

+

+

-

-

Channel 0
2-wire current
Transmitter

-

-

Channel 2
2-wire current
Transmitter

Channel 4
2-wire current
Transmitter

Channel 6
3-wire current
Transmitter

-

-

(2)

(3)

(3)

(3)

(3)

(2)

(2)

(2)

(4)

Vdc
power supply

(5)

Optional second
Vdc power
supply

(6)

(1)

(1)

@JO#VTQQE

@JO#VTQQE

".

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