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Message
Description
SENSOR LOCKED
The detector is in locked mode – last measured value has been latched. It does not measure.
CALIBRATION
The detector is in calibration mode – its indications are ignored.
TEST
The detector is in test mode – its indications are simulated, but all outputs are treated as
real. Possible gas alarms or faults.
WARMING UP...
Preparing detector for operation. Its indications are ignored.
INHIBIT MODE
The detector has been temporarily excluded from the system. In this status detector related
flags are ignored (see NOTES Table 12).
NO RESPONSE
The detector does not respond for a longer period. It is a special detector fault.
STOP
System operation stopped by the operator.
CAL.REQUIRED
Non-critical fault: exceeded time to periodic calibration.
Table 10: Text description of the detector status
5.7
Control Unit detailed view
The screen is divided into a few sections (see figure 21):
DI (Digital Input) – when the input is enabled, “1” is displayed.
Relay output status – this section shows the status of relay contact outputs R1 – R3 and fault relay.
Control Unit status
This section shows a text description for the status Control Unit. Possible messages include:
Message
Description
OPERATIONAL
The unit is operational.
AW <fault code >
Sigma Control L Unit is faulty. Fault code is a hexadecimal number. Text message explaining
fault code find in unit's menu – see section 5.9.
Table 11: Control Unit status text description
p. 24|38
User's Manual: POD-026-ENG R17
Figure 21: Screen with Control Unit detailed view
Pushbutton
functions
DI status
Control Unit
status
Relay output status
