Electrical Connection - Simtronics GD10-P00 Operating Manual

3.6.

Electrical connection

The terminal compartment is accessible by removing the circular terminal cover.
(Loosen the four M5 bolts).
The terminal compartment, including the terminals for electrical connection, is
shown below.
The installation wiring enters the terminal compartment via a single M20 Exe cable
gland, which can be mounted on either side of the compartment. The unused entry
is blanked with an Exe cover.
Figure 3.5 Terminal compartment
The detector housing must be connected to local ground via the external
!
earth point. The wire should be minimum 4 mm
possible.
The shield of the cable should be connected to instrument earth in the central
control module, and is normally not terminated at the detector. Exception: If extra
RFI protection is required, and the installations grounding principles/regulations
allows it, the shield is terminated to local ground via the internal earth point at the
detector.
On UL variants, the terminal compartment is not used. Cables are instead led out of
a bushing, and each cable termination is numbered as above.
GD10P
Internal earth point
Page 12 of 32
Terminal 5 Factory use only
Terminal 4 Factory use only
Terminal 3 4-20 mA output
Terminal 2 24 V return (0 V)
Terminal 1 +24 VDC
External earth point
2 (8 AWG) and as short as
850-811250-R05