Commissioning
821XKlimaBA0399 5-19
Task (FIG 5 - 2 ):
Acentrifugalpump isused to ensureconstant pressureinapipeline
system (e.g. for water supply of residential and industrialpremises).
Theapplicationdoesnot onlyrequireremotecontrolfromacentral
operating panel but also setting possibilities at site. The pressure
is to be reduced to a fixed value during times when only few water
is required. By monitoring the actual pressure it is also possible to
detect burst pipes.
Functions used
- Internal PID controller for moisture control.
- Regular control, setpoint selection via fieldbus with
feedback via analog channel terminal 8.
- Networking via fieldbus (e.g. 2102).
- Manual / Remote changeover (M/R).
- Change between setpoint selection via fieldbus and
manual momentary-contact switch (terminal E1 = down,
terminal E2 = up).
- Fixed speed selection via JOG value.
- Electrical controller inhibit.
Code settings:
Code Name Possible settings IMPORTANT
Lenze Selection Info
C001 Operating mode -0- -3- Setpoint selection via LECOM
C005 Configuration -0- -7- Operation with closed-loop
control, setpoint via frequency
input E1 with analog feedback
via terminal 8
C007 Te rmi na l
configuration
-0- -26- Motorpotentiometer, JOG, CW/
CCW
C037 JOG value 1 20.00 16.67Hz Fixed reduction to 1/3 of the
rated speed.
C051 Actual PID
controller value
Only display
C070 Gain
PID controller
1.00 1.00
C071 Integral action
time
PID controller
100 100 ms
C072 Differential
component
PID controller
0.0 0.0
All other parameters are based on the factory setting. Set the rated motor data (depends on the motor used)under C088
(rated motor current) and C091 (motor cos
Ö
). The pressure setpoint cannot only be selected via a fieldbus but also via
the operating unit8201 BB (installationupto 10 mdistance possible)or ananaloginput signal (with module 8279). For
standardisation of the process value see chapter 5.5.1 .
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