mDT001 HazMon System Tester Technical Manual /9
CMC INDUSTRIAL ELECTRONICS LTD
Phone: (604) 421-4425 Toll Free: (888) 421-4425 Fax: (604) 421-7734
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The Industry Leader in HazMon Technology
Up 3
Sensor Data High
The data high voltage level on the network is displayed.
If this voltage is too low the sensor has resistance
between the green data wire and the white common
wire.
Sensor test on mTC002 and mDC002
To perform this test the tester must be connected to single controller card connected to the
backplane and cables which should be read are connected to designated terminals. No more
than one controller card can be read at the same time. The card needs to be isolated from a
system if installed in one. It is enough to disconnect incoming and outgoing branches using the
dip switches on backplanes.
mTC002
If the card works correctly and Real-time display menu in sensor test is selected the tester will
circle between the mTC002 card status (see mTC002 manual for more information on status),
ambient temperature of the board and then values of connected thermocouple sensors. It takes
time for the mTC002 card to provide the data so it circles between status and ambient
temperature for a while. It depends on position of thermocouple sensors how it will be
displayed. If 7 thermocouple sensors are connected to the first card and first connector the
sensors will be reported under numbers 1-7 as on example below:
The same will be read if the connector on the mTC002-TC is closed and if there is no sensor
connected and the switch is open the display will show error for open wire.
mDC002
If the card works correctly and Real-time display menu in sensor test is selected the tester will
circle right away between the controller card status, ambient temperature and the values from
the connected sensors.
The test of the mDC002 by EZTester is more sophisticated than on the mTC002 and can help
to troubleshoot the card with the sensor cables. The EZTester only reads data provided by the
mDC002 card and detailed description of the data is in manual of the mDC002. Description
below shows just the interpretation of the data on the EZTester.
Status
Of mDC card
Message
Description
OK!
No problem, everything is working good.
F
ROM memory problem, card should be replaced
P
Power up problem, card should be replaced
S
Presence of short on one of the cables
A
Ambient temperature sensor on card failure
O
One of previously read cables is disconnected
Cables
Reading
Each cable read temperature in
°
C and
°
F and is represented by a number. The
number shows the position of each sensor. If the cable has 20 sensors and it is
mTC002
1
23°C 73°F
mTC002
2
25°C 77°F
mTC002
3
24°C 75°F
