Sustained Alarm Relay
|
Terminal Block |
Connection Point |
Block Name |
User Relay Settings |
|
|---|---|---|---|---|
|
Normally De-energized |
Normally Energized | |||
|
P2 |
Term 5 |
ALM_SUS 2 |
Sustained Alarm NO |
Sustained Alarm NC |
|
P2 |
Term 6 |
ALM_SUS 1 |
Sustained Alarm NC |
Sustained Alarm NO |
|
P2 |
Term 7 |
ALM_SUS CM |
Sustained Alarm Common |
Sustained Alarm Common |
|
NOTE: NO = Normally Open; NC = Normally Closed |
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The connections are to the single pole, double throw (SPDT) SUSTAINED ALARM relay. SUSTAINED 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 per Switch Selectable Options. 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 Time Delay Settings. 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 SUSTAINED 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 SUSTAINED ALARM relay contact rating is 8 A @ 24 VDC. Refer to the figure in Sustained Alarm Relay for all relay connections. |