FL4000
31
3.6.1 Alarm
Relay
Table 8: Alarm Relay Terminals
Terminal Block
Connection Point
Block Name
User Relay Settings
Normally De-
energized
Normally
Energized
P2
Term 5
ALM2
Alarm NO
Alarm NC
P2
Term 6
ALM1
Alarm NC
Alarm NO
P2
Term 7
ALMC
Alarm Common
Alarm Common
NOTE
: NO = Normally Open; NC = Normally Closed
Description: The connections are to the single pole, double throw (SPDT) ALARM relay.
ALARM output is time delayed for 0, 8, 10, or 14 seconds. This time delay can be set by
MODBUS (RS-485) or the user selectable dipswitch (Section 3.7 ). Note that a minimum time
delay of 8 seconds can be applied if the flame source is removed within 50% of set delay time
from the start of flame. Please refer to Sec.3.7.1. If set via MODBUS below 8 seconds, the
detector may go into alarm even if the flame source is removed within 50% of the delay time.
The ALARM output can be normally energized or de-energized, latching or non-latching, and
these options are also set via MODBUS or by a dipswitch. The ALARM relay contact ratings
are 8 A @ 250 VAC and 8 A @ 30 VDC. Refer to Figure 20 for all relay connections.
Figure 20: Terminal Connections
7
7
For ULC-recommended wiring, please see Figure 5.