Document: LT0439 Vigilant MX1-Au Operator Manual
Issue 1.73 23 October 2018 Page 11-33
The panel should then be in normal. If a fault is generated press
SILENCE BUZZER to stop the noise, then press FAULTS to determine
the fault conditions present.
If the wiring does not match the ex-factory configuration – for example,
the MX Loop is connected and wired in a loop, then a fault will be
generated.
Connect the battery.
Temporarily connect one of the 0V terminals on the controller to the gear
plate. Within 10 seconds, an earth fault should be indicated. Remove
the connection. The earth fault should clear within 10 seconds.
Note that connecting a PC to the Diag/Prog serial port may also generate
an earth fault (depending on the PC) if the PC is earthed. This is normal
and will clear when the PC is disconnected.
Do not connect an earthed PC if there is an existing earth
fault. This could damage the PC and the MX1. If an
earthed PC must be used, it is strongly recommended to
use an RS232 to RS232 isolation device.
The MX1 site configuration data file is configured off-line and loaded into
the MX1 using the SmartConfig software program.
At this stage, all the field wiring can be connected to the MX1. If an earth
fault occurs when a piece of wiring is connected, this wiring should be
checked and the fault cleared before proceeding further.
The contrast setting for the MX1 LCD has been preset in the factory to
provide adequate visibility over the MX1’s full operating temperature
range.
Setting of the contrast to suit a particular installation is possible using
control VR1 on the PA1057 MX1 LCD/Keyboard. However, doing so
may result in the LCD not having adequate visibility over the full range of
operating temperature.
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