Other Steps To Improve Noise Immunity - Maple Systems OIT 4160B Installation Manual

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3.4. Connect OIT to Power
WARNING Use only with Class 2 power source limited to 30 VDC
open circuit and 8A short circuit.
The power cable for the OIT should be 18AWG 2-conductor wire with a shield
wire and protective shield foil. Maple Systems sells cable P/N 6030-0009 by the
foot for user-built power cables.
Figure 4 OIT3160/4160 Power Supply Connection
STEPS
1. The power cable should not be any longer than necessary. Prepare the
cable as follows:
a) Cut the power cable to the appropriate length.
b) Strip the cable shield back to expose the two insulated wires and the
bare shield wire on both ends of the power cable.
c) Strip the insulation from the two insulated wires. For the OIT end, this
is 0.27 inch (7 mm).
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OIT3160B/4160B INSTALLATION MANUAL
• Keep the lengths of the OIT cables as short as possible. Do not coil excess cable
and place it next to AC powered equipment.

2.4. Other Steps to Improve Noise Immunity

• Always install the OIT's rear cover. This provides a shield against electrical
noise which can be generated in the control panel by relays, motors, power lines,
and/or high frequency equipment. Ensure that all rear cover mounting screws
are properly secured.
• Any equipment used in the enclosure that operates at high frequency or high
current levels can be covered with a grounded metal shield.
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