MX32v2
ANALOG AND DIGITAL CONTROLLER
USER MANUAL
Revision D.0
Note: It is possible to modify a programmed alarm level via the
MX32v2’s
user interface
(
Program
menu).
4.3.1 Internal Relays and Buzzer
• Fully configurable Alarm relays are available.
• 1 Fault relay is available. This relay is not configurable and is activated on the
appearance of any failure. The Fault relay is powered in normal operation mode so it
does switch over in the event of a power supply failure.
• The internal buzzer is activated on the appearance of any event (failure or alarm). The
sound differs depending on the event: continuous in fault mode, discontinuous in alarm
mode and frequency increases according to the alarm level that is reached. The internal
buzzer can be deactivated permanently through the user interface or COM 32
application.
4.3.2 Alarms SettingsIt is possible to program for each detector:3 alarm levels
• each alarm can be increasing or decreasing
• each alarm can be configured as an instantaneous alarm and/or an averaged alarm
over 15 to 480 minutes
• each alarm has an adjustable hysteresis from 0 to +3% of the measuring range by
increments of 1%
• one over range alarm (OVS: over scale)
• one under range alarm (UDS: underscale)
• one “no ambiguity” alarm (for flammable gas detectors and concentrations above
100% LEL)
Alarms may be programmed for automatic or manual acknowledgement (except OVS, UDS,
“no ambiguity”).
4.3.3 Alarms Automatic AcknowledgementIn this mode, resetting an alarm
does not require any intervention. Alarm management (relays, visual indicators, buzzer) is as
follows:
Alarm Relay
(normal mode)
Alarm Relay
(buzzer mode)
Appearance
grayscale
mode
Alarm Reset
is
pressed
AL (1,2,3)
grayscale
mode
Activated
Deactivated
Solid
OFF
Disappearance
mode
(a)
(a)
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