Asco joucomatic POSIMATIC 606 Série Manuel D'installation page 16

POSIMATIC
25: SETP RAMP
Setpoint ramp
The setpoint ramp is activated in the manual and automatic mode. It limits the speed of the actuator in the event of a quick
rate-of-change of the setpoint.
In the setting SETP RAMP = auto the slower of the two positioning times calculated during initialisation is used for the
setpoint ramp.
26: SPLIT START
Setpoint for start of split range (Fig. 9: Split range operation)
27: SPLIT END
Setpoint for end of split range
Parameters 26 and 27 together with parameter 24 limit the effective setpoint range. This is a solution for split range
applications with
❑
rising / falling
❑
falling / rising
❑
falling / falling
❑
rising / rising
characteristic curves.
28: SETP FUNCTN
Setpoint function (Fig. 10: Characteristic valve curves)
This function enables the linearisation of non-linear characteristic curves of valves and the mapping of arbitrary flow
characteristics of linear characteristic curves of valves.
The device is provided with four characteristic curves:
❑
linear
❑
equal percentage 1 : 25
❑
equal percentage 1 : 50
❑
free (factory setting: 1 : 25 inverse)
A curve with 11 points can be entered at 30: when "free" is selected.
30: FREE 0%
.
.
.
40: FREE 100%
1 6
Stroke x (%)
Setpoint range
Positioner 1:
rising
steigend
Fig. 9: Split range operation (example)
Setpoint w (%)
Setpoint range
Positioner 2:
rising
steigend
INSTALLATION