7
3. Electrical Installation
Access for the electrical wires to the terminal module is made via the PG16 cable
gland located at the bottom of the mounting bracket assembly. The cable gland can be
removed and replaced with a suitable conduit fitting if required. The wire routing of a
typical installation is shown in the diagram below.
Diagram 4. Simplified Schematic Diagram 5. Wiring Diagram
The terminals used are suitable for conductors of 24 to 14 AWG (0.5 to 1.8mm Dia.).
The use of 16 AWG (1.5 mm Dia.) conductors is recommended.
If Power over Ethernet (PoE) is used to power the device, then 24 VDC power must not
also be connected to the device, (or conversely if 24 VDC is used to power the Midas
®
,
then electrical power via the Ethernet port must not be applied). Failure to observe this
requirement may cause damage to the gas detection system and will not be covered by
the standard warranty.
When connecting the wires ensure that the power switch is in the off position.
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