Lenze 8200 Frequency inverters - Manual (Page 132)

Commissioning
8200SHB0199 5-27
Application FIG 5-5:
The air conditioning system of a department store is to be controlled according to
the number of persons present. The fans must circulate an amount of air that
depends on the number of people (e.g. data provided by a person counter).
Functions used
- Belt monitoring
- Flying-restart circuit on coasting motor
- Suppression of mechanical resonances
- Smooth start and stop with S-ramps
Code settings for unit 1:
Code Name Possible settings Code Name
Lenze Choice Info
C001 Operating mode -0- -0- Setpoint selection via term. 8 (jumper setting, se
chapter 4.2.8.2)
Control via terminals parameter setting with 8201BB
C005 Configuration -0- -0- Operation with open-loop control via terminal 8
C008 Function relay K1 -1- -14- Apparent motor current (C054) < Current threshold
C156 and acceleration finished (Belt monitoring)
C014 Control mode -0- -3- Square characteristic V f
d
2 with constant V
min
boost
C142 Start condition -1- -3- Automatic start, if term. 28 HIGH, flying-restart circuit
active
C156 Current threshold 0 50 %
C182 t
integration
RFG S-shape 0.00 0.50 s Smooth start / stop
C625 Skip frequency 1 480.00 30.00 HzRemoval of mechanical resonances
C628 Skipping bandwidth, f
skip
0.00 10.00 %
Procedure for setting skip frequencies
Stop!
If the mechanical resonance points are approached, the mechanics may be
damaged.
1. Remain C625 to C628 in factory setting.
2. Detect mechanical resonances (if not already known).
3. Detect the bandwidth of the mechanical resonances.
4. Set C625 to C628 according to the data available.
Note!
Terminal E3 must always be at L level (PAR2: normal operation; PAR1: QSP).
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