Combinations With Corresponding Led And Relay Status - Dräger Polytron 8100 Notice D'utilisation

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5.7.3

Combinations with corresponding LED and relay status:

Combination(s) Diagram
Case: Alarm is acknowledged before the alarm condition cleared.
Latching
Acknowledgeable
Non-latching
Acknowledgeable
Case: Alarm is acknowledged after the alarm condition cleared.
Latching
Acknowledgeable
Latching
Pre-acknowledgeable
Latching
Non-acknowledgeable
Case: Alarm is acknowledged before the alarm condition cleared.
Latching
Pre-acknowledgeable
Non-latching
Pre-acknowledgeable
Case: Alarm is not acknowledged.
Non-latching
Non-acknowledgeable
Non-latching
Acknowledgable,
20
a
b
c
d
1 2 3
a
b
c
d
1 2 3
a
b
c
d
1 2 3
a
b
c
d
1 2
Relay (if a realy board is installed), LED, and symbol status
1 Alarm condition is present.
Relay (b) is energized and symbol (b) is active.

LED (c) starts flashing.

2 Alarm condition is acknowledged (d) but is still present.
Relay (b) and symbol (b) are reset.

LED (c) is lit continously to indicate the present alarm condition.

3 Alarm condition clears.
LED (c) is off.

1 Alarm condition is present.
Relay (b) is energized and symbol (b) is active.

LED (c) starts flashing.

2 Alarm condition clears.
Relay (b) stays energized and symbol (b) stays active.

LED (c) keeps flashing.

3 Alarm is acknowledged (d)
Relay (b) and symbol (b) are reset

LED (c) is off.

1 Alarm condition is present.
Relay (b) is energized and symbol (b) is active.

LED (c) starts flashing

2 Alarm is about to be acknowledged (d), but acknowledging is not
possible.
Relay (b) stays energized and symbol (b) stays active.

LED (c) is continuously lit.

3 Alarm condition cleared.
Relay (b) and symbol (b) are reset without acknowledging.

LED (c) is off without acknowledging.

1 Alarm condition is present.
Relay (b) is energized and symbol (b) is active.

LED (c) starts flashing.

2 Alarm condition cleared.
Relay (b) and symbol (b) are reset without acknowledging.

LED (c) is off without acknowledging.

Dräger Polytron 8100