Baldwin Boxall OmniCare - 6.1.3 Description of Loop Integrity Check (Power Cables)

OmniCare EVC System
Installation & Commissioning Manual
OmniCare issue 1
71
C O M M U N I C A T I O N S
6.1.3 Description of Loop Integrity Check (Power
Cables)
Figure 6.2 — Illustration of Testing the Power Cable Integrity
Performing this test next has the following benefits:
• Since the 0V check has proved the integrity of the loop,
power can be safely applied without the risk of damaging
Remote Units.
• This check ensures the continuity of the +V cabling using the
Remote Unit’s power switching feature:
Remote Units test the next +V cable for short circuits before
switching the power to the next Remote.
• Either the Front Panel LEDs on the Remote Units or the
Commissioning Process can be used to diagnose the location
of any faults.
• Successfully completing this test reduces the scope of further
wiring faults from 3 wires to 2 wires, with the remaining
cables being data only.
Refer to Section 6.2.3 for details.