Danfoss VLT 3000 Series Product Manual page 38

Example 7:
38
Connection examples
®
Use of the VLT frequency converter's internal PID regulator
with internal set-point (digital reference = 50%)
Feedback 0-10 bar ~ 4-20 mA
Min. speed = 10 Hz
Max. speed = 50 Hz
The following must be programmed:
Function Parameter no.
Activation of
PID regulator
Internal setpoint
Feedback type
Current signal
Min. speed
Max. speed
Regulator range
Proportional
amplification
Integration time
Differentiation time
®
MG.30.A7.02 - VLT is a registered Danfoss trademark
Parameter value
101 closed loop
205 50 %
114 current
413 4-20 mA
201 10 Hz
202 50 Hz
120 Depends on
application
121 Depends on
application
122 Depends on
application
123 Depends on
application
NB: Screen for control cables must be
connected as described in the chapter on
EMC-correct installation.
All settings are based on factory settings, but
motor data (parameters 103-105) must be set
according to the motor connected