ABB AO2020 User Manual

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 217
Manual start
The automatic calibration can be manually started on the display and control
unit. It is effected
• Only as zero-point calibration or
• Only as end-point calibration (for restrictions see "Calibration data for
automatic calibration" (see page 227)) or
• As a common zero-point and end-point calibration.
Manual start of an analyzer module is described in section "Manual start of
the automatic calibration" (see page 266).
Disable automatic calibration
The "Block automatic calibration" control signal is needed for blocking au-
tomatic calibration:
Level High Level 12 to 24 V. Automatic calibration is disabled as long as
the high level is active. The next automatic calibration after
switching to a Low level will be started according to the parame-
terized cycle time.
Input Digital input DI2 on Digital I/O module – "Status signals/ Exter-
nally controlled calibration" (see page 112) (standard function
block application)
Automatic calibration start, block and cancel
Start Block Cancel
Controlled by interval:
lf "Activation" parameter
is set to "on"
if "Activation" parameter
is set to "off" or
with the "Block Auto-
matic Calibration" con-
trol signal
by appropriate configu-
ration of the Cancel
management (see page
227) parameter or of the
function block
Automatic Calibration
Externally controlled:
with the "Start Auto-
matic Calibration" con-
trol signal
with the "Block Auto-
matic Calibration" con-
trol signal
As per interval controlled
Start
Manually activated:
with START with STOP
NOTE
Automatic calibration of an analyzer module is impossible when it is oper-
ated with the test and calibration software TCT and during setting up sys-
tem modules.
Message display
During automatic calibration an Autocal running message blinks in the
softkey line.

ABB AO2020 Specifications

General

Brand	ABB
Model	AO2020
Category	Measuring Instruments
Language	English