Lenze E82MV251_2B

Application examples
Pressure control
13−8
L
EDB82MV752 EN 5.2
Application−specific configuration
Code Settings Important
No. Designation Value Meaning
C0014 Operating mode 3 V/f characteristic control V f
2
square−law characteristic with constant V
min
boost
C0019 Operating threshold −
automatic DC
injection brake (auto
DCB)
0 Automatic DC injection brake is deactivated
If the lower frequency limitation is activated
(C0239) or if C0181 is used as controller
setpoint (C0145), the automatic DC injection
brake must be deactivated!
C0106 Hold time − automatic
DC injection brake
(auto DCB)
0 Automatic DC injection brake is deactivated
C0070 Process controller
gain
1.00 Lenze default setting
Adapt to process, if required.
à Further information:  7−50 ff.
C0071 Process controller
reset time
100 Lenze default setting
C0074 Process controller
influence
100.0 0.0 {0.1 %} 100.0
C0145 Source of process
controller setpoint
0 Overall setpoint (PCTRL1−SET3) Setpoint = NSET1−NOUT + PCTRL1−NADD
(Main setpoint + additional setpoint)
C0181 Process controller
setpoint 2
(PCTRL1−SET2)
−650.00 {0.02 Hz} 650.0
C0238 Frequency precontrol 0 No feedforward control (only process controller) Process controller has full influence.
C0239 Lower frequency
limitation
 0 Prevent reversed rotation The value does not fall below the limit
independently of the setpoint.
Automatic DC injection brake (auto DCB) must
be deactivated with C0019 = 0 or C0106 = 0
C0412 Linking analog signal sources to internal analog signals
1 Setpoint 1
(NSET1-N1)
255
fixed free (disconnect from analog input) The analog input of the standard I/O (AIN1) is
linked factory−set to the speed feedforward
control. This connection must be separated so
that the input can be used for the analog
actual value (C0412/5).
2 Setpoint 2
(NSET1-N2)
255
5 Actual process
controller value
(PCTRL1−ACT)
1 Analog input X3/8 of the standard I/O Actual pressure value
) Note!
l The motor potentiometer in connection with the standard I/O may only be linked
with the signals NSET1−N1, NSET1−N2 or PCTRL1−NADD. The linkage with other
signals would cause a setpoint step−change.
l When selecting the setpoint via the motor potentiometer, we recommend the
acceleration and deceleration times  5s (C0220, C0221).