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Control Unit Mounting; Wire Routing - Siemens PAD-4 Installation, Operation And Maintenance Manual

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PAD-4 Installation, Operation and Maintenance Manual
2.3

CONTROL UNIT MOUNTING

PAD-4-MB is configured out of the box for ULC
operation. Remove jumper on J2 for UL installa-
tions. Leave jumper on J2 for ULC installations.
Refer to Figure 2-5 for location of this jumper. To
install the main board, install 4 screws loosely into
the 4 bottom mounting holes for the PAD-4-MB in
the enclosure. Slide the bottom of the board
behind the screws, aligning the screws with the
slots in the board. Install a screw in the top left
and top right corners of the main board. Tighten
all fasteners. All mounting hardware is included
with the PAD-4 main board. See Figure 2-3 below
for details.
PAD-4 Enclosure
PAD-4-MB
Mounting
6/32 x 1/4 screws
(6 places)
Figure 2-3
Mounting the PAD-4-MB
2.4

WIRE ROUTING

Notes:
All high voltage and non-power limited wiring
must be kept separate from power limited
wiring. A ¼" separation must be maintained,
with high voltage and non-power limited
wiring running in separate conduit openings
from power wiring.
To avoid induced noise (transfer of electrical
energy from one wire to another), keep input
wiring isolated from high current output and
6
power-limited wiring. Improper wiring installa-
tion may cause improper operation. Avoid
pulling one multi-conductor cable for the
entire system. Instead, separate high current
input/output from low current.
Wiring within the cabinet should be routed
around the perimeter of the cabinet. It should
not cross the printed circuit board where it
could induce noise into the sensitive
microeletronics or pick up unwanted RF noise
from the switching power supply circuit.
A
B
C
D
A.
Non-power Limited - High Voltage (AC power) or B
B.
Non-power Limited - High Voltage (AC power) or A
C.
Non-power Limited - Battery wiring, if separate
enclosure required) or D
D.
Non-power Limited - Battery wiring, if separate
enclosure required) or C
E.
Power Limited or F or G
F.
Power Limited or E or G
G.
Power Limited or E or F
Figure 2-4
PAD-4 Wire Routing
G
E
F

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