24 Vdc Power Supply Requirements; Wiring Cable Requirements - Det-Tronics Open Path Eclipse Instructions Manual

Mounting Sequence
1. Attach the OPECL module to the pan-tilt mounting
plate and tighten the OPECL mounting bolts to 20
lb.-ft. minimum.
2. Install the lower mounting bracket.
3. Place the pan-tilt mounting plate on the lower
bracket and install the upper mounting bracket.
Tighten the mounting hardware to 20 lb.-ft. minimum.
Tighten the alignment bolts/nuts hand tight only.
Anti‑seize material (provided) must be applied to the
U‑bolt threads at the time of installation to prevent galling.

24 VDC POWER SUPPLY REQUIREMENTS

Calculate the total gas detection system power consumption
rate in watts from cold start-up. Select a power supply with
adequate capability for the calculated load. Ensure that
the selected power supply provides regulated and filtered
24 Vdc power for the entire system. If a back-up power
system is required, a float-type battery charging system is
recommended. If an existing source of 24 Vdc power is being
utilized, verify that system requirements are met.
If disconnection of power is required, separate
disconnect capability must be provided.
WARNING
All entries must contain appropriately rated plugs
or fittings. It is required that each plug or fitting be
wrench‑tightened to an appropriate installation
torque and meet the minimum thread engagement
requirements per the applicable local standards, codes,
and practices in order to retain the defined ratings.
PTFE sealant or equivalent should be used on NPT
threads.
B2305
Figure 5—OPECL Gas Detector Mounted to Vertical Post
11.3
NOTE
NOTE
MOUNTING BRACKET (2)
U-BOLT
PAN-TILT MOUNTING PLATE
OPECL MODULE
OPECL MOUNTING BOLT (2)
MOUNTING POST
*
APPLY ANTI-SEIZE MATERIAL TO U-BOLT
THREADS TO PREVENT GALLING.
Devices certified for hazardous locations shall be
installed in accordance with EN/IEC 60079‑14 and
NEC 505.

WIRING CABLE REQUIREMENTS

Always use proper cabling type and diameter for input
power as well as output signal wiring. 14 to 18 AWG
shielded stranded copper wire is recommended. For
EQP models, refer to the EQP system manual (95-8533)
for specific wiring requirements and recommendations.
Always install a properly sized master power fuse or
breaker on the system power circuit.
The use of shielded cable in conduit or shielded
armored cable is required for ATEX conformance.
In applications where the wiring is installed in
conduit, dedicated conduit is recommended. Avoid
low frequency, high voltage, and non‑signaling
conductors to prevent nuisance EMI problems.
The use of proper conduit installation techniques,
breathers, glands, and seals is required to prevent water
ingress and/or maintain the explosion‑proof rating.
MOUNTING BRACKET (2)
MOUNTING BOLT (2 PER BRACKET)
*
(2)
PAN-TILT MOUNTING PLATE
OPECL MODULE
OPECL MOUNTING BOLT (2)
FLAT MOUNTING SURFACE
Figure 6—OPECL Gas Detector Mounted to Flat Surface
12
IMPORTANT
NOTE
CAUTION
A2306
95-8556