Burkert Type 1110 - Handbuch (Seite 56)

54 - 1110
DIGITAL INDUSTRIAL CONTROLLER
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Sub-menus to the Structure main menu
Ratio control
Scaling
Prh: Upper scaling value for the actual value of the ratio of control to
process variable. When setting Prh, a decimal point position is
defined, which will then be also valid for Prl, Pr+, Pr-, Srh and Srl.
In addition, the ratio value will be displayed with this decimal point
position. The display range for the ratio value will be set up here. If the
ratio value is outside this range, the area limit (Prh, Prl) that has
been exceeded will be displayed. The set-point and alarm limits can
be set up within this range. The alarm hysterisis also refers to this
range.
Setting range:
0000
≤ Prh ≤ 9999
Prl: Low scaling value for the ratio
Adjustment range: 0000
≤ Prl ≤ Prh
Alarm mode
Al: abs Absolute alarm; the programmed alarm has a fixed
reference to the scaling range.
Al: rel Relative alarm; the programmed alarm has a fixed reference to the
ratio
(alarm ratio).
Alarm limit
Pr+: High alarm limit, which refers to the ratio.
Adjustment range: Pr -
≤ Pr+ ≤ Prh
Pr-: Low alarm limit, which refers to the ratio.
Adjustment range: Prl
≤ Pr- ≤ Pr+
Hy: Alarm hysteresis
Adjustment range: 0.1
≤ Hy ≤ 20.0 (in % referred to the
Prl, Prh scaling range)
Setpoint limits
Srh: High ratio setpoint limit.
Adjustment limit: Srl
≤ Srh ≤ Prh
Srl: Low ratio setpoint limit.
Adjustment limit: Prl
≤ Srl ≤ Srh
6.5.4 Meanings of the symbols in the configuration menus