Lenze SMD Series - Page 16

14
Commissioning
Code Possible Settings
IMPORTANT
No. Name Lenze Selection
C10
Minimum output
frequency
0.0 0.0 {Hz} 240 • Output frequency at 0% analog
setpoint
• C10 not active for fixed setpoints or
setpoint selection via c40
C11
Maximum output
frequency
50.0 7.5 {Hz} 240 • Output frequency at 100% analog
setpoint
• C11 is never exceeded
WARNING!
Consult motor/machine manufacturer before operating above rated frequency.
Overspeeding the motor/machine may cause damage to equipment and injury to
personnel!
C12
Acceleration time 5.0 0.0 {s} 999 • C12 = frequency change 0 Hz...C11
• C13 = frequency change C11...0 Hz
• For S-ramp accel/decel, adjust c82
C13
Deceleration time 5.0 0.0 {s} 999
C14
Operating Mode 2 0 Linear characteristic with
Auto-Boost
• Linear characteristic: for standard
applications
• Square-law characteristic: for fans
and pumps with square-law load
characteristic
• Auto boost: load-dependent output
voltage for low-loss operation
1 Square-law characteristic with
Auto-Boost
2 Linear characteristic with constant
V
min
boost
3 Square-law characteristic with
constant V
min
boost
C15
V/f reference point 50.0 25.0 {Hz} 999
Set the rated motor frequency
(nameplate) for standard applications
smd006
C16
V
min
boost
(optimization of
torque behavior)
4.0 0.0 {%} 40.0
Set after commissioning: The unloaded
motor should run at slip frequency
(approx. 5 Hz), increase C16 until
motor current (C54) = 0.8 x rated motor
current
C17
Frequency threshold
(Q
min
)
0.0 0.0 {Hz} 240 See C08, selection 7
Reference: setpoint
C18
Chopper frequency 2 0 4 kHz • As chopper frequency is increased,
motor noise is decreased
• Observe derating in Section 2.2
• Automatic derating to 4 kHz at 1.2 x I
r
1 6 kHz
2 8 kHz
3 10 kHz
C21
Slip compensation 0.0 0.0 {%} 40.0 Change C21 until the motor speed no
longer changes between no load and
maximum load
C22
Current limit 150 30 {%} 150
Reference: smd rated output current
• When the limit value is reached, either
the acceleration time increases or the
output frequency decreases
• When C90 = 2, max setting is 180%
C24
Accel boost 0.0 0.0 {%} 20.0 Accel boost is only active during
acceleration