Wiring The Module - Spectrum Controls 1769sc-IF4IH User Manual

User' s Manual 0300215-03 Rev. A
NOTE: The terminal screws are non-captive. Therefore, it is possible to use a ring lug
[maximum 1/4 inch o.d. with a 0.139 inch minimum i.d. (M3.5)] with the module.
3. Tighten the terminal screw making sure the pressure plate secures the wire.
Recommended torque when tightening terminal screws is 0.68 Nm (6 in-lbs).
NOTE: 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 may not be able to put it back on the terminal block
because the wires will be in the way.
Wire Size and Terminal Screw Torque
Each terminal accepts up to two wires with the following restrictions:
Wire Type Wire Size
Solid Cu-90°C #14 to #22 AWG
(194°F) (1.63 to 0.65 mm)
Stranded Cu-90°C #16 to #22 AWG
(194°F) (1.63 to 0.65 mm)
Use supply wires suitable for 20°C above surrounding ambient.
!
Attention

3.7.5 Wiring the Module

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.
Attention
After the module is properly installed, follow the wiring procedure below, using the
proper cable, Belden 8761.
Figure 3-6
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.
Be careful when stripping wires. Wire fragments that fall into a module
!
could cause damage at power up.
Attention
3. At one end of the cable, twist the drain wire and foil shield together, bend them away
from the cable, and apply shrink wrap. Then earth ground at the preferred location
based on the type of sensor you are using. See Grounding for more details.
4. At the other end of the cable, cut the drain wire and foil shield back to the cable and
apply shrink wrap.
Chapter 3: Installation and Wiring
Terminal Screw
Torque
0.68 Nm (6 in-lbs)
0.68 Nm (6 in-lbs)
3-9
Retaining Screw
Torque
0.46 Nm (4.1 in-lbs)
0.46 Nm (4.1 in-lbs)