Presys DCY-2057 Technical Manual page 65

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Instruments
Make sure the input type to be used for the output calibration has already
been properly calibrated.
Make the connections listed in table 10 according to which output and output
type should be calibrated.
Output type
current (0 to 20mA)
voltage (0 to 10V)
voltage(0 to 5V)
Table 10 - I/O terminal connections for output calibration
Now enter Calibration level 8 and select which of the two outputs will be
calibrated. Select the output type (0 to 20mA, 0 to 5V or 0 to 10V) and press ENTER.
The display will show the mnemonic corresponding to the first calibration point.
There are two output calibration points.
In the case of current output the mnemonics correspond to electrical signals
from 0 to 20mA. In the case of voltage the mnemonics correspond to signals from 0
to 5V or from 0 to 10V.
By pressing ENTER when the mnemonic corresponding to the first or second
calibration point is displayed, the display will show the output value. It will then be
possible to have the output value adjusted to the electrical level indicated by the
mnemonics with the help of the UP and DOWN keys. Press ENTER after adjusting.
When calibrating the first point (0mA, 0V) care should be taken to avoid output signal
saturation.
Return to normal operating level by moving back until level zero.
Returning to factory calibration
The Controllers store the factory calibration parameters in the non-volatile
memory and these can be retrieved at any time.
Should there be any suspicion that some instrument malfunction might be due
to an improper recalibration procedure use the RECUP option (see figure 38).
RECUP - this is the option allowing the retrieval of factory calibration values.
This option is valid for both the inputs and outputs.
Enter calibration level 8 and select whether to retrieve input or output values.
Select the option RECUP and press ENTER to reload factory values.
DCY - 2057 Pressure Controller
Output 1 with Input 2
terminal 13 (+) with 4 (+)
terminal 14 (-) with 6 (-)
terminal 13 (+) with 5 (+)
terminal 14 (-) with 6 (-)
Output 2 with Input 2
terminal 15 (+) with 4 (+)
terminal 16 (-) with 6 (-)
terminal 15 (+) with 5 (+)
terminal 16 (-) with 6 (-)
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