EXPro Installation Manual
Approved Document No: GLT-212-7-1
Page 13
Issue: 1.7 Author: MF/NRPJ Date: 05/07/2021
OTHER CONNECTIONS
The Premier EXPRO also has the following connections:-
FIELD MONITORING INPUTS
The EXPro has 5 field monitoring inputs:
Gas Fired
Manual Release
Auto/Manual Mode
Low Pressure
Abort
The inputs are monitored for Open Circuit & Short Circuit. To activate the input, a load of 1KΩ must
be switched between the +ve & -ve lines. If the equipment being connected has Normally Closed &
Normally Open contacts, then connect the 18KΩ end of line resistor & the 1kΩ resistor as follows:-
+VE
18KΩ
1KΩ
-VE
Figure 7. Wiring diagram for interfacing simple switched inputs
1
ST
STAGE & 2
ND
STAGE FIRE RELAYS
The Premier EXPRO has one first stage & one second stage volt free change over relay that operates
on an alarm. It is rated at 1amp, SELV. The relay remains operated until the panel has been reset.
FAULT RELAY
The Premier EXPRO has one volt free change over relay that operates on any fault condition. The
relay is normally energised, so that it gives a signal in the event of total power failure (mains &
battery backup). It is rated at 1amp, SELV. The relay remains operated until the fault has been
cleared.
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