London Electronics INT-AH, Руководство пользователя

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Page 4
Getting Started
First, please check that the display will suit all the requirements of your
application. Page 4 has some important warnings - please check that all warnings
are covered.
If you have alarm relay output options, you may need to configure the board
before installing the meter in a panel. See the separate sections in this manual for
that option.
Check that your panel cutout is correct , 92mm wide, 45mm high. You must fit the
meter in a protective enclosure for installation class II service. Remove the 2
screws holding the U clamp at the rear of the case. Slide the meter into the cutout
and re-fit the U clamp and screws. Tighten the screws just enough to hold the
meter firmly in place and make sure the sealing gasket is evenly held between
the panel and the bezel.
Connect the signal and power cables, to the appropriate screw terminal connectors.
Check that you are using the correct terminals or you may cause damage to the
meter. Do not connect any output or alarm cabling yet.
Apply power, and confirm that the meter illuminates all segments for a few
seconds.
The lockout switch should be OFF to allow you to change the meter’s settings.
Set the scaling to suit your system, using one of the scaling methods described in
this manual. Check that the meter responds correctly. Now, adjust your alarm
settings, if necessary. Use a continuity tester to check that the relay contacts
operate correctly. Switch the meter off, and check alarm relay contact status.
Check that the contact status suits your system, in conditions of power loss to the
meter.
When you have verified all settings, you can connect the alarm relay cables, to
check that your system operation is satisfactory.
Remember to set the lockout switch ON when you have finished , to prevent
accidental loss of your settings.