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5.10. EXTERNAL CONNECTIONS
To access external connections, follow the steps
below:
1.
The Special Conditions for Safe Use detailed in
section 10 CERTIFICATION APPENDIX of this
manual must be observed at all times.
2.
Remove the REAR ENDCAP as described in
section 5.9 BATTERY REMOVAL of this manual.
3.
Remove the BATTERY COMPARTMENT (if fitted)
by first removing the TOP BATTERY PCB, and
batteries as described in section 5.9 BATTERY
REMOVAL of this manual. Then using a 3mm AF
Allen key, remove the 4xM4 cap screws which
hold the BATTERY COMPARTMENT in place and
remove the BATTERY COMPARTMENT to reveal
the external connections as shown.
All connections are made using 5.08mm pitch removable terminal blocks which can accept up to
(12AWG) wire size. All connections must be made using suitable crimp ferrules.
2.5mm
2
Connections are clearly labelled on the PCB and have the following functions:
NC1/NC2
- Normally closed contact of relay pole 1 and 2
COM1/COM2 - Common contact of relay pole 1 and 2
NO1/NO2
- Normally Open contact of relay pole 1 and 2
EX1,EX2,EX3 - Do NOT use
RS485-
- RS485 DATA (A) –
RS485G
- RS485 GND
RS485+
- RS485 DATA (B) +
0V
- 0V reference for the PCBs
ENCLOSURE - Electrical connection to the enclosure
TRIG±
- Do NOT use
SW
- Switch connection (CONTROL BUTTON)
CL±
- Current loop supply
VBAT
- Do NOT use
VEXT±
- External 24VDC supply
Note that a spring pin may be fitted at VBAT to make the connection to the BATTERY
COMPARTMENT (if fitted). Care must be taken to avoid damage or obstruction of this contact.
When replacing the BATTERY COMPARTMENT ensure that it is aligned correctly so that this
connection is made properly.
5.10.1. RELAY OUTPUT
The relay output is DPDT (Double Pole Double Throw) meaning that there are two separate sets
of contacts (NC1 / COM1 / NO1 and NC2 / COM2 / NO2). These may be connected to two
separate external circuits. Contact rating is 30VDC @ 2A.
While in the LISTENING state, the Normally Closed contacts of the relays will be connected to
their respective Common contacts and the Normally Open contacts will be open.
While in the DETECTION state, the Normally Closed contacts of the relays will be open, and the
Normally Open contacts will be connected to their respective Common contacts.
ID5001P_5001_B00
Page 23 of 36
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