C&S Controls Laser LT RD-1550, Техническое руководство

Страница: 10 / 44

6 LaserLight LT 1550 Technical Manual
2.3 Wiring
The Laser LT remote display provides two cord grips located on the underside of the enclosure for cabling; one for
inputs, and one for outputs. An AC power cord is supplied with the unit. Only the serial communications cable
must be connected. Use the following steps to wire the remote display.
WARNING
The Laser LT remote display has no on/off switch. Before opening the unit, ensure the power cord is
disconnected from the power outlet.
Open the remote display by unlatching the lid (shown in Figure 2-2).
2.3.1 Cable Grounding
Except for the power cord, all cables routed through the cord grips should be grounded against the Laser LT
enclosure. Do the following to ground shielded cables:
• Use the lockwashers, clamps, and kep nuts provided in the parts kit to install grounding clamps on the
enclosure studs adjacent to cord grips. Install grounding clamps only for cord grips that will be used; do
not tighten nuts.
• Route cables through cord grips and grounding clamps to determine cable lengths required to reach cable
connectors. Mark cables to remove insulation and shield as described below:
• For cables with foil shielding, strip insulation and foil from the cable half an inch (15 mm) past the
grounding clamp (see Figure 2-3). Fold the foil shield back on the cable where the cable passes through the
clamp. Ensure silver (conductive) side of foil is turned outward for contact with the grounding clamp.
• For cables with braided shielding, strip cable insulation and braided shield from a point just past the
grounding clamp. Strip another half inch (15 mm) of insulation only to expose the braid where the cable
passes through the clamp (see Figure 2-3).
Cord grip
Insulated cable
Foil (silver side out)
Grounding clamp
Shield wire (cut)
Length of foil before folding
back on cable insulation
Cut insulation here
for foil-shielded cables
Braid
Cut insulation here
for braided cables
NOTE: Install lockwashers
first, against enclosure,
under grounding clamp
Figure 2-3. Grounding Clamp Attachment for Foil-Shielded and Braided Cabling
• Route stripped cables through cord grips and clamps. Ensure shields contact grounding clamps as shown in
Figure 2-3. Tighten grounding clamp nuts.
• Finish installation using cable ties to secure cables inside of indicator enclosure.