Model 3600-I IR3 Flame Detector
Page 65 of 66
Appendix E.1.2.3. Using the Alarm Relay Contact for Alerting
1. The following parameters shall be set:
AUTOMATIC BIT Test = on
Connected to N.C. contact of Alarm Relay Terminals
Connected to Fault Relay Terminals
2.
The relay contacts (“alarm” – and “faulty relay”) must be protected with a fuse rated at 0.6
of the nominal specified relay contact current.
3. The maximum contact rating that is allowed per SIL-2 is 30VDC.
4. It is to be considered that the contact of the Alarm Relay opens if there is a fire alarm.
5. During the forwarding and evaluation of the alarm it must be noted that the relay contact
opens.
NOTE: The alarm relay can be used as low demand only.
Appendix E.1.2.4. Other
1. The complete function of the flame detector (flame detection, function of the 0-20mA
interface, the relays) must be examined at least every 30 days (see
),
when the flame detector must be switched OFF and ON.
2. The window of the sensor must be examined at appropriate time intervals for partial
contamination.
3. The HART and the RS-485 interfaces must not be used for the transmission of the safety-
related data.
