NOVUS n1500lc - Manual (Page 11)

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9.6 CALIBRATION CYCLE
All input and output types are factory calibrated. This cycle should only be accessed by
experienced personnel. If this cycle is accidentally accessed do not touch the
or
keys, just press the key a few times to go back to the Work Cycle.
In.lo( Input Low Calibration - Sets the Process Variable low calibration (offset).
Several key strokes at
or might be necessary to increment one
digit.
In.ki( Input Hi Calibration - Sets the Process Variable span calibration (gain).
Ov.lo( Analog Output Low Calibration - Sets the analog current output low
calibration (offset).
Ov.Ki( Analog Output Span Calibration - Sets the analog current output high
calibration (span) of the analog output (20 mA).
k.type Hardware Type - This parameter adapts the firmware to the actual indicator
hardware (optional features) and should not be changed by the user.
2 Alarms ...............................................3
2 Alarms and 4-20 mA.........................19
2 Alarms and RS485 ...........................35
2 Alarms, 4-20 mA and RS485.............51
4 Alarms .............................................15
4 Alarmes and 4-20 mA .......................31
4 Alarmes and RS485 .........................47
4 Alarmes, 4-20 mA and RS485........... 63
9.7 AUTOMATIC CALIBRATION CYCLE
This is an alternative calibration method where the user teaches the indicator the desired indication
values for two extreme input signals. First a low signal is applied to the indicator input (for example, 0
kg) and the desired value (0) is entered in A(ALL parameter. Then a high signal is applied to the
input (close to the upper measurement limit, for example 40000 kg) and the desired indication value
(40000) is entered in A(ALk parameter. After this 2 calibration steps, the internal calibration
parameters are automatically calculated to achieve the desired indication range.
To access this cycle press and keep pressed and for 30 seconds.
A(all Automatic calibration of input low value – Low calibration value. Must only
be entered during a calibration procedure while applying a known input signal
to the indicator.
A(alk Automatic calibration of input high value – High calibration value. Must
only be entered during a calibration procedure while applying a known input
signal to the indicator.