70 ACF5000 FTIR ANALYZER SYSTEM | OI/ACF5000-EN REV. A
Automatic adjustment
Definition
Automatic adjustment means: The adjustment of the zero point and end
point proceed automatically after starting.
Test gas infeed
The test gases are automatically fed in via external solenoid valves.
Starting the automatic adjustment
Automatic adjustment is started
at time intervals determined by the internal clock or
by an external control signal or
manually via the analyzer system's display and control
unit.
Internal start
Automatic adjustment is normally started cyclically on a time-controlled
basis by the internal clock.
The parameters of the cycle time are set with the adjustment data.
External start
The "Start automatic adjustment" control signal is needed for external
starting of automatic adjustment:
Level Low 0 to 3 V → High 12 to 24 V edge. The Low → High transition may
also be generated by an external contact. After the transition the
High level must be present for at least 1 s.
Input Digital input DI1 on the digital I/O module (standard function block
application "Status signals/Externally controlled adjustment")
Manual start
The automatic adjustment can be manually started on the display and con-
trol unit. It is effected
as a zero point adjustment individually or
as an end point adjustment individually or
as a zero point and end point adjustment jointly
.
Manual start of an automatic adjustment of the analyzer system is described
in the "Manual start of automatic adjustment" section (see page 101).
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