Yokogawa AXFA14G/C - Manual (Page 63)

IM 01E20F02-01E A-4
APPENDIX 1. APPLICATION, SETTING AND CHANGE OF BASIC PARAMETERS
A1.4 Setting the Transducer
Block
To access the AXF-specific functions in the transducer
block, the Device Description (DD) for AXF needs to
have been installed in the configuration tool used.
(1)Setting the damping time constant
Access the PRIMARY_VALUE_FTIME parameter. Set the
damping time constant (in units of seconds).
FA0106.EPS
(2)Setting the output signal Low Cut
Set the low cut of flow rate.
Access the PRIMARY_VALUE_LOWCUT parameter. Set the
value subject to low cut in % of PRIMARY_VALUE_RANGE.
FA0107.EPS
(3)Setting the limit switch functions
Set up limit switches 1 and 2. Limit switch statuses can
be read from a host as outputs of DI blocks.
Access the LIMSW_1_ACT_DIRECTION parameter and
select the direction of limit switch 1’s actions.
1: LO LIMIT Low alarm
2: HI LIMIT High alarm
Access the LIMSW_1_SETPOINT parameter and set the
threshold for tuning on limit switch 1 in unit specified in the
parameter LIMSW_1_UNIT. As necessary, the on/off
hysteresis can be modified by changing the value of the
LIMSW_1_HYSTERESIS parameter (only a positive value
can be set).
Access the LIMSW_1_TARGET parameter and select the
primary value to be monitored by limit switch 1. (In AXF
series limit switch target is always 1:Primary value so please
confirm the setting.)
1: PRIMARY_VALUE
FA0108.EPS
The above shows the setting procedure for limit switch 1.
As necessary, also set up limit switch 2.
(4)Setting the LCD display
Select the data to be displayed on the LCD indicator
and the display refresh cycle.
ex. DISPLAY_SELECT1
1:Flow Rate(%)
2:Flow Rate
3:Integrator1 Out
4:Integrator2 Out
5:Arithmetic Out
Access the DISPLAY_CYCLE parameter and set display
cycle. The display cycle is can be selected from 200ms to 8s.
It defaults to 2(400 ms), but if the LCD display looks unclear
when used in lower temperature environments, increase the
value as required.
Access the DISPLAY_SELECT1-3 parameter and
set the item of display.
FA0109.EPS
For detail, please refer to 5.6 "Integral LCD indicatior".