Honeywell ESSER 8010 Operation And Installation Instructions Manual page 58

Extinguishing Control Computer 8010 – 19-Inch
In case of an associated event, the relay is activated and the voltage (24 V DC) is switched to the external unit.
In the resting state, a voltage of approximately 1 V DC to 2 V DC must be present at the relay terminals during
the monitored mode.
This requires an external connection, depending on the application:
D
1
+
relay
-
D
1
+
relay
D
2
-
+
R
relay
-
Fig. 42: Positive-switching / monitoring mode (Schematic wiring)
Only silicon diodes type BY251 must be used for this application!
58
R = low-resistance load R < 300 Ohm
L
R
L D = series diode BY251 (notice relays current max. 2 A)
1
L = inductive load
D = series diode BY251 (notice relays current max. 2 A)
L
1
D = recovery diode e.g. 1N4007 o.ä.
2
R = high-resistance load > 2 kOhm
L
R
L
R = parallel resistor 2 kOhm
FB 798955.GB0 / 09.07