Spectrum Controls 1769sc-IF8u - Manual (Page 38)

28 Compact IO ™ Universal Input module
Wire Size and Terminal Screw Torque
Each terminal accepts up to two wires with the following restrictions:
Wire Type Wire Size Terminal Screw Torque Retaining Screw Torque
Solid Cu-90°C (194°F) #14 to #22 AWG 0.68 Nm (6 in-lbs) 0.46 Nm (4.1 in-lbs)
(1.63 to 0.65 mm)
Stranded Cu-90°C (194°F) #16 to #22 AWG 0.68 Nm (6 in-lbs) 0.46 Nm (4.1 in-lbs)
(1.63 to 0.65 mm)
!
ATTENTION! Use supply wires suitable for 20°C
above surrounding ambient.
Wiring the Module
!
ATTENTION! To prevent shock hazard, care should be taken when
wiring the module to analog signal sources. Before wiring any module,
disconnect power from the system power supply and from any other source
to the module.
After the module is properly installed, follow the wiring procedure below,
using the proper thermocouple extension cable, Belden 8761 for non-
thermocouple applications excluding RTDs and Belden 9533 or 83503 for
RTD/Resistance type inputs.
To wire your module follow these steps.
1. At each end of the cable, strip some casing to expose the individual
wires.
2. Trim the signal wires to 2-inch (5 cm) lengths. Strip about 3/16 inch (5
mm) of insulation away to expose the end of the wire.
!
ATTENTION! Be careful when stripping wires. Wire fragments that fall into a
module could cause damage at power up.