Ashcroft GC35 Instrukcja instalacji i konserwacji - Strona 14
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In "Comparator setting mode" , user can change settings on the comparator outputs provided by
the unit. (Two comparator outputs or one for analog output unit are provided). The available selec-
tions of this mode varies based on the selections made in Function setting mode and comparator
output type selection. For the unit provided with two comparator outputs, settings of each output
can be done independently with the exception of the operation mode.
•
Hysteresis Mode
Settings of comparator operation point (A) and comparator operation point (b)
•
Window Comparator Mode
Settings of comparator operation point (A) and dead band (b)
For operation points (A & B) setting, it is fixed at 1 %F.S. in the comparator OFF direction (win-
dow comparator mode).
Also, as common parameters between each operation mode, comparator ON time delay and
comparator OFF time delay can be selected in the range of 0.00~2.00 seconds.
Loop check mode allows the user, without actually applying pressure to the unit, to vary pres-
sure display value by using
will vary based on the pressure display value chosen. This function allows the user to confirm
outputs or output settings manually. This function is also useful in checking proper wiring and other
simulations.
Comparator 1: Use/No Use
If the comparator 1 was set to No use, LED (OUT1) will turn off
Comparator 2: Use/No Use
Only available with two comparators LED (OUT2) will turn off when comparator 2 is set to No Use.
Comparator Setting Point A & b
In case comparator 1 is disabled, this menu is not available. Only available with two comparator option.
Note: When setting the dead band (b) in "Hysteresis", if the set value is too small, there is a risk of
chattering occurring. Be careful when setting dead band (b). For dead band (b), it is recom-
mended that a value greater than 1%FS of pressure range is selected.
Note: When the deadband (b) in "hysteresis" is set to negative, comparator is ON at low point (A)
and OFF at high point (A)–(b).
Note: Comparator output setting values are checked and recalculated when a setting related to
comparator operation is altered in order to prevent any inconsistencies in comparator opera-
tion. The comparator's output setting value is recalculated, if the calculation result is beyond
setting range and the comparator output setting value will be changed automatically so that
it will be within the setting range. Possible calculated error of ±1digit may be observed at
comparator output setting values when the comparator output setting value is recalculated.
Comparator ON/OFF delay time
In case comparator 1 is disabled, this menu is not available.
Comparator 2 ON/OFF delay time
Only available with two comparator option.
Saving Comparator Setting
The comparator settings can be saved to the memory within the unit. The units' current compara-
tor settings will be saved therefore a comparator setting must be set prior to saving.
What data is saved? Comparator(s) Use/No Use setting, comparator operation point (A), dead
band (b) and ON/OFF Time delay.
What is not saved? Comparator mode and/or output type will not be saved.
Loading comparator setting
What is loaded? Comparator(s) Use/No Use setting, comparator operation point (A), dead band
(b), and ON/OFF Time delay.
k
k
key or
key. As a result, comparator(s) and analog outputs
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