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Program
Description
Additional parameters
SA copy
The output copies the status of acoustic indicator output.
-
Impulse valve
control
When at any detector, alarm threshold is detected, the
output generates 3 pulses 1 s of activation / 1 s deactivation
∏_∏_∏_________
see figure 8.
Enable delay.
Disable delay.
Normally open (NO) operation
logic / normally closed (NC).
NC
valve
control
When an alarm threshold is detected on any detector, the
relay contact deactivates. It is possible to manually
deactivate/activate the output – for details, see section 4.6.
-
Monitoring
The output copies the status of SSO Monitoring indicator
-
Service
The output copies the status of SSO Service
-
Table 3: Relay output operation programs
Figure 6: Principle of operation the indicator's relay outputs
4.3
Digital Inputs DI
This input is designed to activate the status of EXTERNAL ALARM or EXTERNAL FAULT by using an external
signal coming from the automation system, alarm system or from a push button.
The dual input is galvanically isolated from the rest of unit circuits. To use it connect voltage with any
polarity to terminals (parameters – see section 10).
The current input status can be observed via the user’s interface (see section 5.7).
4.4
Visual and acoustic indicator outputs
The Control Unit is equipped with dedicated outputs for acoustic and visual indicator control.
The visual indicator output can operate in two modes: with backup and without backup. For the operation
principle of visual indicator output with backup see Figure 7. The input enables when warning 1 threshold
exceeding is detected at any detector. In the case of backup operation mode it disables when the
concentration drops below the warning 1 threshold and after pushing the button (see also section 5.5).
In the case of no backup operation, the input behaves as a relay operating in Warning 1 program (see
section 4.2). The output status can be observed via the user’s interface (see section 5.5). Input
specifications – see section 10.
p. 12|38
User's Manual: POD-026-ENG R17
Indicator
state
System state
Green
Warning 1
OK
Warning 2
Alarm
Fault
Red
Time
