gazex MDP-4, Instruction Manual, Page: 14 / 24

1) Events – viewing on LCD allows for review of the history of past alarm, emergency and
configuration events. A screen with a sample description of one event has been presented
below.
Event number : 0123 / 1600
Detector 1 – Alarm A1
Start time
: 2010-12-14 12:05:11
End time : 2010-12-14 12:30:45
Change - press
, Exit - <OK>
Description of messages:
a) Event number – identification number of an event in unit’s memory. Successive numbers
from 1 to 1,600 are assigned to successive events. In the case of exceeding the capacity of
the buffer (1600 events), the oldest events are erased, i.e. event 1601 is registered as
number 1, etc.
b) Event description - specifies the type of the occurred alarm or failure, e.g.:
Detector no. - Alarm A1 (or TWA) Detector no. - Alarm A2 (or STEL)
Detector no. - Alarm A3 Detector no - short line '+' or 'S',
Detector no - open power line '+' Detector no - short signal line 'S'
Detector no. - open signal line 'S' Detector no. - power off
Alarm input - Alarm A1 Alarm input - Alarm A2
Zone 1 Valve - absent valve Zone 2 Valve - absent valve
Zone 1 Valve - impulses were generated Zone 2 Valve - impulses were generated
External power supply fault U<190VAC External power supply fault U>250VAC
External power supply fault U<10,5VDC External power supply fault U>15VDC
Internal power supply fault Uint=12VDC Internal power supply fault Udex1=9VDC
Internal power supply fault Udex2=9VDC Control Unit - reset
Control Unit - power on Control Unit - power off
Internal accumulator fault, no charging Internal accumulator fault - U<14,4VDC
Control Unit - settings changing Service Mode - enabled
Silent Mode - enabled Auto Reset Mode - enabled
System Time - changed MODBUS RTU Master - enabled
RWS - no communication MODBUS RTU Slave - enabled
c) Start time - date and time of the event,
d) End time - date and time of the event.
No date and time of the end of event means that the event lasted until the reset of the unit
or until its switching off.
2) Data transmission allows readout of the history of occurred alarm events by the RS232
serial port. This option requires installation of special software on a PC computer
(Windows 98, XP). The program enables filtration of events of individual detectors and
configuration events, as well as saving history to a text file.
5.4.4 Service Info.
Select:
Signal currents
Power voltages
Outputs test
Zero Settings
Exit
The first two options display parameters of internal circuits of the unit, helpful in solving
problems connected with system installation or in diagnosing the type and cause of unit’s
failure.
Output test - allows checking if all outputs are correctly switched on without the necessity to
generate alarms on unit’s inputs.
Denotes:
Active relay output: zone 1 - alarm 1
Relay output: zone 1, alarm 1
MDP-4(8,16)… Instruction Manual edition 6PU63en
©gazex’2011 v1101
Page 14 / 24