Rice Lake 920i Wall Mount Enclosure - Manual (Page 2)

2 920i Wall Mount Enclosure Installation Instructions
Wall mount models of the
920i
provide eleven cord
grips for cabling into the indicator. The parts kit
includes cord grip plugs to prevent moisture from
entering the enclosure. Install these plugs into all cord
grips that will be not be used in your application. Use
the cable grounding instructions below for wiring into
the indicator.
Cable Grounding
Cables routed through the cord grips should be
grounded against the indicator 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). 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.
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. Grounding Clamp Attachment for Foil-Shielded
and Braided Cabling
• For load cell cables, cut the shield wire just past
the grounding clamp. Shield wire function is
provided by contact between the cable shield and
the grounding clamp.
• Route stripped cables through cord grips and
clamps. Ensure shields contact grounding clamps
as shown in Figure 2. Tighten grounding clamp
nuts.
• Finish installation using cable ties to secure
cables inside of indicator enclosure.
Power Specifications
Line Voltages 115 or 2 30 VAC
Frequency 50 or 60 Hz
Maximum Power Consumption, 65W on secondary
Primary power consumption: 100W TRMS
Constant current:
1.5 A TRMS (115VAC);
1.0 A TRMS (2
30VAC)
Fusing
115 VAC and 2 30 VAC North American
2 x 3.15A TR5 subminiature fuses
Wickmann Time-Lag 19
374 Series
UL Listed, CSA Certified and Approved
2 30 VAC European
2 x 3.15A TR5 subminiature fuses
Wickmann Time-Lag 19 372 Series
UL Recognized, Semko and VDE Approved
See the 920i Installation Manual, PN 67887, for
additional specifications.
Parts Kit Contents
Table 1 lists the parts kit contents for wall mount
models of the
920i
.
Table 1. Parts Kit Contents
PN Description
14626 Kep nuts, 8-
32NC (6)
151 33 Lock washers, No. 8, Type A (6)
156 31 Cable ties (4–single A/D, 6–dual A/D)
15665 Reducing glands for 1/2 NPT cord grips (11)
15887 6-position screw terminal for load cell
connection (1–single A/D, 2–dual A/D)
195
38
Cord grip plugs (10–single A/D, 9–dual A/D)
42 350 Capacity label (1–single A/D, 2–dual A/D)
5
3075 Cable shield ground clamps (6)
70599 6-position screw terminals for J2 and J10 (2)
71125 3-position screw terminal for J11 (1)
71126 4-position screw terminal for J9 and optional
keyboard connection (2)