DE-STA-CO F5-B AC Inverter Drive - Manual (Page 40)

40
Adjustment of the Drive
This parameter can be used to regulate the output voltage in relation to the
rated frequency. With this function active, voltage variations at the input
as well as on the DC bus will have only a small influence on the output
voltage (V/Hz-characteristic). This function can be used to adapt the
output voltage for special motors and can also prevent damage to the
motor resulting from over or under voltage supply.
Adjustment range: 1...650 V (off)
Resolution: 1 V
Factory setting: PSD
Note: Enter-Parameter
In the example below using a motor rated at 230 V / 60Hz, the output
voltage is too high due to our supply being 250 V and CP.17 off. By setting
CP.17 to the correct rated motor voltage of 230 V, the voltage is clamped
thereby giving the motor the correct voltage.
Voltage stabiliza-
tion
When starting the frequency inverter into a spinning motor, an E.OC fault
can be triggered because of the difference between the actual motor
speed and the inverter set speed. By activating speed search, the inverter
searches for the actual motor speed, adjusts its output frequency to
match. It will then accelerate with the adjusted ramp time to the given set
value. During speed search CP.2 displays "SSF". This parameter deter-
mines under which conditions the function will operate. Parameter values
can be selected individually or any combinations.
Example: CP.16=12 means after reset or after auto-restart (E.UP). Speed search
condition
Adjustment range: 0...15
Resolution: 1
Factory setting: 8
Note: Enter-Parameter
Value Condition
0 Function off
1 Control release enabled ( terminal 16 )
2 Power on
4 After fault reset
8 After auto-restart (reset) E.UP
PSD
(Power Stage
Dependent)