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Message
Description
bit 3 – incorrect internal voltage of the device
bit 4 – incorrect temperature inside the device
bit 5 – front panel missing or malfunction
bit 6 – incorrect program memory checksum
bit 7 – incorrect configuration memory checksum
Table 12: Error codes for valve controller
5.6
Buzzer – internal acoustic warning /alarm device
The control module contains an internal audible warning/alarm device (buzzer) designed to horn an audible
signal when intervention of the system operator is required, for instance when a gas hazard is detected or
when any part /component of the system reports an error.
The buzzer is activated under the following circumstances:
gas alarms – exceeding of the first, second or third alarm threshold is reported by any of gas
detectors connected to the control module,
defects /errors – a defect /error is reported by any of gas detectors connected to the control
module or failure of communication with detectors or a defect of the control module itself.
The activated buzzer produces a modulated audible signal with 0.5 s of sound and 0.5 s of silence.
The buzzer can be switched off (deactivated) for a specific period of time. If so, the buzzer shall horn no
sound, even in case when a triggering signal is active. However, after expiration of the deactivation time the
buzzer is restarted (reactivated). In addition, any new gas alarm
or a system defect /error that are reported
during the time when the buzzer is off are capable of the buzzer reactivation. Upon disappearing of the
triggering signal the buzzer goes off.
The buzzer can be deactivated by means of the keypad (see section 5.1.4). The functionality of temporary
deactivation is handled in a different way for gas alarms and for defect. The possible duration of the buzzer
deactivation time are:
for gas alarms: from 1 to 90 minutes,
for defects /errors: from 1 to 168 hours (1 week) or permanent deactivation (the buzzer shall
never be reactivated).
Settings for the foregoing parameters can be adjusted by the system user from the level of the control
module menu (see section 5.8).
The buzzer can be also configured in such a way that shall be never activated (see details in section 5.8).
6
A new gas alarm is understood as exceeding of the next (higher) alarm threshold on the same detector or appearing of any threshold exceeding
on another detector.
s. 20|31
User's Manual: POD-051-ENG R02
