8.4.2 Application parameters 6 to 52
8.4.2.1 '6.SCUR' Current range of setpoint
Requirement: ● You have a positioner in the 2-wire, 3-wire, 4-wire version.
● Positioner is connected in accordance with the connection
graphics for 2/3/4-wire systems shown in section "Electrical wir‐
ing (Page 79)".
Possible settings: ● 0 MA
● 4 MA
Purpose: This parameter is used to set the current range of the setpoint. The
selection of the current range depends on the type of connection.
The "0 MA" setting (0 to 20 mA) is only possible for three-wire and
four-wire connections.
Factory setting: 4 MA
8.4.2.2 '7.SDIR' Setpoint direction
Possible settings: ● riSE
● FALL
Purpose: This parameter is used to set the setpoint direction. The setpoint
direction is used to reverse the direction of action of the setpoint.
● Rising (riSE): A higher value at the setpoint input results in
opening of the valve.
● Falling (FALL): A higher value at the setpoint input results in
closing of the valve.
The setpoint direction is primarily used for the split-range mode and
for single-acting actuators with the safety setting 'uP'.
Factory setting: riSE
8.4.2.3 '8.SPRA' Setpoint split range start / '9.SPRE' Setpoint split range start end
Adjustment range: 0.0 ... 100.0
Purpose: With these two parameters in combination with parameter "'7.SDIR'
Setpoint direction (Page 147)", you can limit the effective setpoint.
Solve split-range tasks with the following characteristic curves:
● Rising/falling
● Falling/rising
● Falling/falling
● Rising/rising
Factory setting: With "SPRA": 0.0 With "SPRE": 100.0
Parameter assignment
8.4 Description of parameters
SIPART PS2 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E00074631-AE 147
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