![background image](http://html1.mh-extra.com/html/oldham/mx-43/mx-43_user-manual_3709870022.webp)
22 MX43
User
manual
Alarm and Relay Thresholds
Alarm thresholds, relay programming, the management of time delays, and
methods of release are controlled over the COM43 application.
Note: It is possible to modify an alarm limit via the
Programming
menu of
MX43.
Parameters of Detector alarms
It is possible to program the following for each detector:
■
3 alarm thresholds.
■
Each value is configurable in increasing or decreasing values.
■
Each alarm is configurable as an instantaneous and/or average alarm of
15 to 480 minutes.
■
Each alarm has an adjustable lag of 0 to +3% (or -3% for a negative alarm)
for the value of the range of measurement, by pitch steps of 1%.
■
A high-range excess alarm (OVS:
over scale
).
■
A UDS low-range excess alarm (UDS:
underscale
).
■
A “clear doubt” alarm (in the case of explosive gas detectors).
The alarms may be programmed for automatic or manual release (except
OVS, UDS, and clear doubt).
Automatic deletion of alarms
The release (resetting) of alarms does not require any intervention. The
management of alarms (relays, indicators, buzzer) is carried out according to
the following table:
Event
Message
screen
Alarm relay
(normal)
Alarm
Relay
(buzzer)
LED alarm
Internal
buzzer
Appearance
AL (1,2,3)
and inverse
video of the
detector
Activated
Activated
Fixed light:
Activated
Press
alarm
reset
AL (1,2,3)
and inverse
video of the
detector
Activated
Deactivated
Fixed light:
Deactivated
Disappearan
ce
Normal
display
Deactivated
Deactivated
Off:
(a)
(a): Manual release compulsory to stop the internal buzzer.
(b): Automatic deactivation upon the disappearance of an alarm, even if no release has been
requested before the disappearance of the alarm.
(c): If programmed
Table 2: Automatic deletion of alarms.
Manual deletion of alarms
Release (resetting) by the operator is compulsory. The management of alarms
Summary of Contents for MX 43
Page 3: ...Introduction to the Application 3...
Page 14: ...14 MX43 User manual...
Page 24: ...24 MX43 User manual...
Page 42: ...42 MX43 User manual...
Page 56: ...9 Certificate of Compliance 56 Chapter 9 Certificate of Compliance...
Page 59: ...Locking Wall mounted version by 2 locks with a key Rack version none...
Page 63: ......
Page 66: ...66 MX43 User manual...
Page 67: ......