ENGLISH
Pag. 30
5.9 Connection to optional boards
By opening the 5-6 pin of JP9 jumper on the main PCB, it is possible to activate optional
outputs available when using the following cards:
³
STS3REL, three-relay card with tension free changeover contacts. One relay is associa-
ted to Fault and Watch-dog. The remaining two are to be associated to two outputs of
the three preset alarm thresholds.
³
STS1REL, one-relay card to offer one tension free changeover contact, to be either as-
sociated to Fault or to Alarm status.
By configuring the dip-switches on the basic board differently, the alarm thresholds can be
changed. With the optional 3-relay board, it is also possible to modify the intervention thre-
sholds of the relays as indicated in the following table.
The alarm thresholds described below are related to the use of the STS3REL and STS1REL
card where the relays are not stored and are not limited in time. The alarm cannot be silen-
ced manually by the operator, but will be silenced automatically when the condition that
generated the alarm is no longer present.
handbook of STS.IDI interface. With the calibration keypad is possible to set the detector’s
address, to memorise it the dip-switch must be in 0 position (all keys positioned towards the
ON side).
The alarm thresholds will automatically set on the default configuration. When detectors are
RS485 connected, the proportional 4-20mA output remains active.
ON
1 2 3 4 5 6
1 3 5 7
2 4 6 8
1 2 3 4 5 6 7 8
-
+
POWER SUPPL
Y
A
B
B
A
GAS CONTROL UNIT
+
-
Figure 3) Detector connection to RS485 bus lines
Summary of Contents for SMART3G-GrI
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