Technical data

8
Envoy Installation, Commissioning & Operating Manual
Additional Zone Cards
If fitting additional zone cards to the extendable version of the ENVOY control panel, first refit the main
circuit board. Slide additional cards into position using the locating pins, see figure.3. Particular
attention must be made to ensuring that the pins are located correctly in the connector.
Misalignment of these pins will result in damage to the zone card when the panel is powered up,
see figure.4.
Fix the card into position using clips and self tapping screws provided. Pre-drilled fixing holes have been
made in the mounting rail but they are obscured by a foam strip which is designed to protect tracks on
the back of the zone card. It is advisable to locate these fixing holes before attempting to screw down
the circuit board.
Mains Connections
The general requirements for mains wiring is described on page 6.
Do not connect the mains supply to the panel until you are fully conversant with the layout and features
of the equipment. A rating plate is fitted in the bottom left hand corner of the panel describing the nature
of the supply permitted.
The incoming mains supply should be brought into the panel in the bottom left hand corner, via the
knockout provided. A suitable cable gland must be used to secure the outer sheath of the cable used.
The earth must first be connected to the primary earth stud (peg) marked with a symbol using ring
crimp provided.
Sufficient earth lead should be left to allow Live and Neutral connections to be accidentally pulled from
terminal block, while leaving earth connection intact. Secondary earths may be connected to the brass
earthing block.
Figure 5: Mains block and earth stud connections
L
N
Earth Stud
Mains Supply
Input Cable