Siemens Midimaster Eco - Hardware Set-Up; Pid Process Control

ECO REFERENCE MANUAL
13-34
PID PROCESS CONTROL
Together with open loop motor control, PID closed loop process control can be applied to any process
which is a function of motor speed and for which a transducer is available to provide a suitable
feedback signal (
see Figure below ). When closed loop process control is enabled (P201 = 001), all
setpoints are calibrated between zero and 100%, i.e. a setpoint of 50.0 = 50%.
Motor
Process
(eg. fan)
Transducer
(eg. duct
pressure
sensor)
Dip
Switches
V or I
Signal
Type
V or I
Filtering
P323
P206
P210
Feedback
Monitoring
Scaling
P211
P212
Transduce
r Type
P208
PID
on/off
P201
Frequency
Limits
Accel /
decel
P012
P013
P002
P003
Intergral
Derivative
Proportional
Integral
Capture
Range
+
+
Reference
Setpoint
Source
-
P207
P203
P202
P204
P006 / P910
Scaling
Setpoint
Memory
P021
P022
P011
P051 to P055, P356
Fixed Digital
via terminal
rail
Analog
Input 1
Digital
Frequency
Set
p
oint
P005
Up/Down
Keys on
Ke
yp
ad
Note: All inputs become percentages
P001=7
Feedback Display %
P001=1
Setpoint Display %
P001=0
Output Frequency Display
P006=1
P006=0
P006=2
Hz
P041 to P044
P046 to P049
%
Dip
Switches
V or I
Signal
Type
V or I
P023
%%
%
%
%
%
Setpoint
from USS
P910
P910
Intergral
Scaling
P205
=
+
+
Closed Loop Process Control
HARDWARE SET-UP
Make sure that the DIP selector switches 4 and 5
are correctly set ( VHH WKH ',3 6HOHFWRU 6ZLWFKHV ILJXUH LQ
WKLV VHFWLRQ ) and in agreement with P323 for
unipolar voltage or current feedback signal inputs.
Connect feedback transducer between control
terminals 10 and 11 (analogue input 2). This
analogue input accepts a 0/2 - 10 V or a 0/4 - 20
mA input signal (determined by the setting of the
DIP selector switches 4 and 5 and P323) has 10-
bit resolution and permits a differential (floating)
input. Make sure that the values of parameters
P006, P024 are set to 000.
15 V dc power for the feedback transducer can
be supplied from terminal 9 on the control
terminal block.