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Statuses of the R4 FAILURE are shown on the illustration below:
Figure 3: Status of contacts for the R4 FAILURE relay
7
System architectures
The drawing below presents a typical solution for the Gas Detection System based on the Control Unit
Module Alpa MOD LED1.
Figure 4: Connection of peripheral equipment to the Control Unit within an open control loop
Please refer to Appendix [2] for details about the number of detector that can be connected within the
open loop control architecture.
Figure 5: Connection of peripheral equipment to the Control Unit within a closed control loop
Please refer to Appendix [2] for details about the number of detector that can be connected within the
open loop control architecture.
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User Manual: POD-015-ENG R02
No failure
NO
NC
COM
COM
NO
NC
Failure
NO
NC
COM
COM
NO
NC
Closed-loop control
Alpa MOD
LED1
EcoWent
XT
EcoDet
XT
EcoWent
XT
II BIEG WENTYLACJI (PRÓG 2)
I BIEG WENTYLACJI (PRÓG 1)
AWARIA (USZKODZENIE SYSTEMU)
BMS i/lub zał. wentylacji II bieg
ZAŁĄCZENIE TABLIC TOA (PRÓG 3)
EcoWent
XT
EcoDet
XT
EcoWent
XT
Open-loop control
ZAŁĄCZENIE TABLIC TOA (PRÓG 3)
II BIEG WENTYLACJI (PRÓG 2)
I BIEG WENTYLACJI (PRÓG 1)
AWARIA (USZKODZENIE SYSTEMU)
BMS i/lub zał. wentylacji II bieg
Alpa MOD
LED1
