MSA 9010 SIL, Руководство по эксплуатации

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Operation
GB
Model 9010/9020 SIL
4 Operation
4.1 Start-Up
Before energizing the control unit, make sure that:
• Mechanical and electrical installation conforms to what is described in chapter 3 and also
conforms to the valid standards.
• The serial number of the control unit corresponds to the specified detector type (for pre-cali-
brated version only).
As soon as supply voltage is connected to the control unit, the start-up procedure is performed for
each channel to check the correct operation of control unit and connected devices. The start-up
procedure takes 2 min.
All modules which are installed in 19" rack are tested simultaneously during start-up operation.
WARNING!
At the beginning of the startup procedure, the output relays are checked. This leads to a temporary
change of output contacts. It may activate an external horn or additional circuits. During the startup
procedure, the alarms are inhibited and the 4/20 mA analog output is as set in Access Code 4,
P20. The FAILURE indication is activated if the ATEX mode is set.
Sequence shown here for 9010 SIL:
During start-up procedure the green POWER LED on the front panel flashes.
At the end of the start-up procedure, the CAL symbol is shortly displayed and the control unit starts
the regular operating mode.
The start-up procedure can be accelerated with the front keys:
• Press Enter/Up/Down key to display next item immediately.
• Press ESC key to skip the start-up procedure
Detector warm up runs in the background during the start-up procedure. If this warm up
takes longer than the start-up procedure, the warming detector countdown is displayed
at the end of start-up procedure.