Rockwell-automation 1769-OF4VI Compact I/O Isolated Analog Modules User Manual download pdf (Page 33)

Publication 1769-UM014B-EN-P - May 2010

Installation and Wiring 2-17

4. Tighten the terminal screw making sure the pressure plate secures the

wire. Recommended torque when tightening terminal screws is 0.68 Nm

(6 lb-in).

Wire Size and Terminal Screw Torque

Each terminal accepts up to two wires.

Table 2.4 Terminal Wire Considerations

Wire the Modules

After the analog module is properly installed, follow the wiring procedure

below. To ensure proper operation and high immunity to electrical noise,

always use Belden 8761 (shielded, twisted-pair) or equivalent wire.

TIP

If you need to remove the finger-safe cover, insert a

screwdriver into one of the square, wiring holes and gently

pry the cover off. If you wire the terminal block with the

finger-safe cover removed, you will not be able to put it

back on the terminal block because the wires will be in the

way.

Wire Type Wire Size Terminal Screw

Torque

Retaining Screw

Torque

Solid Cu-90 °C (194 °F) 0.325…2.080 mm

(22…14 AWG)

0.68 Nm (6 lb-in) 0.46 Nm (4.1 lb-in)

Stranded Cu-90 °C (194 °F) 0.325…1.310 mm

(22…16 AWG)

0.68 Nm (6 lb-in) 0.46 Nm (4.1 lb-in)

ATTENTION

To prevent shock hazard, care should be taken when wiring

the module to analog signal sources. Before wiring any

analog module, disconnect power from the system power

supply and from any other source to the analog module.

ATTENTION

When wiring an analog input, take care to avoid connecting

a voltage source to a channel configured for current input.

Improper module operation or damage to the voltage

source can occur.

Never connect a voltage or current source to an analog

output channel.

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Rockwell-automation 1769-OF4VI Compact I/O Isolated Analog Modules User Manual Page 33