TROUBLESHOOTING
a) SAM does not program
If during the course of programming a SAM, the new address is not programmed in the module, verify that
the connections to both the loop and the conventional device are correctly made. Confirm supply polarity of
the conventional device. Always follow manufacturer’s instructions. Check loop voltage at the SAM terminals
followed by a verification of the conventional device voltage, measure voltage across the supply wires (black
& red). In normal operation it should always be greater than 16 V DC.
Verify the condition of the whole system in particular supplies (auxiliary and loop), earth leakage, loop length
too long, loop with a short or open circuit, panel and sub-panel communications. If all of these are OK then do
a system reset after which you should verify, using function 7.1, if there are devices with duplicated address. If
there are, clear those addresses and reprogram SAM’s that previously had identical addresses.
In the eventuality that one SAM does not program but there is no evidence of two devices having identical
addresses after a system reset has been performed, clear the last programmed address using function 6.4.3
and reprogram SAM. If that does not solve problem replace SAM module. Remember that a duplicate address
fault will only show with ASET mode disabled.
b) SAM with duplicate addresses
In an installation with SAM’s, should there be a fault of 2 devices or more with the same address (duplicate
address fault) two actions can be taken:
1) CLEAR LOOP. Clear the loop where some SAM’s have duplicate addresses. See function 6.4.2. This action
should only be applied when in a brand new installation where all SAM’s should have been blank (no
address programmed).
2) Alternatively the duplicated address can be erased using function 6.4.3
Reset the panel and verify, using function 7.1, the offending address and henceforth the associated FAULT
condition has disappeared. Re-program cleared devices. Repeat procedure until fault disappears. If after the
third time the address clearing procedure has been repeated the fault persists, replace those SAM’s with have
duplicate addresses.
It should be observed that this verification can only be performed when ASET mode is disabled, since the fault
condition where 2 devices have the same address, is not shown when in this particular mode.
Manufacturers of Fire Detection Equipment
globalfire.pt
INSTALLATION & COMMISSIONING MANUAL - V1. 03/2015
JUNIOR V4-L
- FIRE ALARM CONTROL PANEL