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Figure 23: Internal buzzer operation – time diagram
The buzzer can be configured so as not to be triggered at all.
6
Options for SCL connection in a gas detection system
Below we present some examples for connecting Sigma Control L Unit connections with other gas detection
system components.
p. 29|38
User's Manual: POD-026-ENG R17
Figure 24: A connection example: power supply 230 V AC and 24 V DC indicators
Pushbutton
Buzzer
status
Warning level 2
Gas concentration
Warning level 1
time
t
DEZ
Gas risk, buzzer on
Risk stops, buzzer
mute
Operator presses
pushbutton, temporary
deactivation
New alarm, buzzer
resumes operation
Operator presses
pushbutton, temporary
deactivation
Parameter,
deactivation
time
Deactivation
time expired,
buzzer resumes
operation
24V DC INDICZTORS
Sigma Control L
Q1
SmArtGas 4
SmArtGas 4
L
N
PE
230V AC
