D841/D850 Installation Manual
008D-600-150
Page 5
2.2.
Important
The D841 and D850 remote display units contain precision electronics and must not
be subjected to shock, excessive vibration, or extremes of temperature, either
before or after installation.
The serial and power inputs of the displays are protected against electrical
interference; however excessive levels of electro-magnetic interference may affect
the operation of the instrument. The remote display units should be installed away
from any sources of electrical noise and the power and data cables should run
separately from other sources of electrical interference.
The housing is rated to IP65 with a breather valve located on the underside of the
extrusion to prevent condensation build up. This area should not be subject to high
pressure water or other fluids else internal damage may occur.
There are no user serviceable parts inside.
Warranty will be void if the housing is
opened or either of the seals are broken
. All connections are made at the
external sockets located on the bottom, right hand side. Ensure power cable is not
connected to a live source before terminating the power connector. Make sure the
environment is dry when terminating to prevent moisture ingress into sealed
connectors.
Disconnect
power before
opening cable
connector
2.3.
Power Connection
The D841 and D850
remote displays’ are available with two different power input
variants, AC and DC.
Note:
The power connection should be performed in accordance with local
regulations.
2.3.1. AC variant
Use an AC power source of 110-240VAC. The
Protective Earth
pin 4 MUST be
connected to AC mains earth for both safety and EMC regulation compliance.
Use a power cable of
min 0.75mm
2
(AWG
20) to max 2.5mm
2
(AWG 14)
Figure 3 - AC power supply socket connection
2.3.2. DC variant
Use a DC power source of nominal 24VDC (18- 36VDC) only. The
Earth
pin 4
MUST be connected for both safety and EMC regulation compliance.
Note:
DC power is not suitable for long cable runs. Be sure to allow for voltage drop
in the power cable. Failure to do so may result in the display not operating and/or
the power supply to be damaged.
