Siemens G120P

4
Application examples
Pump pressure control
38
Siemens AG CM2G5111en
2014-05-16
Parameter Value Description
p3881 1 ESM setpoint source: Fixed setpoint 15 (p1015)
p20046[0] r722.0 OR input I0
p20046[1] r1025.0 OR input I1
p20048 1 OR runtime group
p20218[0] 100% NSW input X0
p20218[1] 0 NSW input X1
p20219 r1025.0 NSW switch position I
p20221 5 NSW runtime group
Pump pressure control
 Macro 103 "Pump pressure control"
 Differential pressure regulated by integrated PID
controller
 Flying restart and automatic restart activated
 Error message: Digital output 0
 Status display: Digital output 2
When selecting this application using macro 103, the
technological unit remains unchanged at [%]. If
necessary, adapt the unit as described in the parameter
list. Select the values depending on the used sensor.
9
5
14
15
AI0+
AI0-
PTC A
PTC B
DI0
3
4
0 - 10 V
P24V
25
24
23
22
21
20
19
18
AO0+
AO0-
AO1+
AO1-
Optional
DO0
DO1
DO2
Pressure
sensor 0-10V,
e.g. QBE64-
DP4
28
69
GND
DI COM
2
GND
12
13
26
27
ON / OFF
Fault
Alarm
Operation
Speed
(0..20mA)
Output current
(0..20mA)
Parameter Value Description
p596 4 Reference variable of the technological unit
p0010 5 Parameter filter change, technological unit
p595 3 Selection of technological unit: bar
p0010 0 Parameter filter ready
p756[0] 0 Unipolar voltage input (0...10 V)
p0840 r722.0 ON / OFF (OFF1)
p1200[0] 1 Flying restart always active (start in setpoint direction)
p1210 26 Acknowledging all faults and restarting for an ON command
p2200[0] 1 Technology controller enable
p2201[0] 2 bar Technology controller fixed value 1
Set the pressure setpoint to suit the application. This example uses a 0...4 bar sensor (e.g.
QBE64).
p2253[0] p2201 Technology controller setpoint 1
p2257 30 s Technology controller setpoint ramp-up time
p2258 30 s Technology controller setpoint ramp-down time
p2264[0] r755[0] Technology controller actual value
p2265 10 s Technology controller actual value filter time constant
p2267 4.2 bar Technology controller upper limit actual value
p2268 -1 bar Technology controller lower limit actual value
4.2