Wiring - Ametek Thermox 2000 ATEX Series User Manual

Wiring

3-22 | Thermox Series 2000 WDG-HPII / HPIIC - ATEX
Remove AC mains power from the controller and sensor before per-
!
forming wiring.
WARNING
Connections to the control unit are made through the wiring card (see
Figure 3-14). The wiring card is located on the front, bottom of the control
unit for all weatherproof versions and for the general purpose wall mount
version (see the "Control Unit Mounting" Section earlier in this chapter
for help).
To access the wiring card for all general purpose versions of the control
unit, unscrew the four screws on the wiring card chassis cover plate. For
the weatherproof versions of the control unit, first open the front door of
the weatherproof enclosure to gain access to the wiring card shield. Re-
move the three screws on this shield to gain access to the wiring card.
Any screw terminals on the wiring card not described in this section
are reserved for future use.
NOTE
This wiring section shows you how to make the following connections:
AC mains supply wiring to control unit
•
AC mains supply wiring to sensor
•
Control unit to sensor
•
Control unit to remote calibration unit
•
Control unit to alarm devices
•
Control unit to current output devices
•
Control unit to host computer (RS-485 communications)
•
In addition, this wiring section provides mandatory EMC grounding,
shielding, and noise protection requirements.