gefran VDI100 Series

Control Mode Variable Carrier Frequency
(11-01 = 0)
Fixed Carrier Frequency
(11-01 = 2-16 kHz)
V/f and V/f + PG Available Available
SLV and SV Not available Available
Variable carrier frequency can be adjust with parameter 11-30 ~ 11-32.
Carrier
Frequency
(KHZ)
11-30
11-31
Fmax
(01-02)
OutputFrequency
(Fout, Hz)
Fout x (11-32) x K
K is a coefcient; the value of K is based on the following based on the maximum carrier frequency:
K=1: when 11-30 < 5 kHz
K=2: when 10 kHz > 11-30 ≥ 5 kHz
K=3: when 11-30 ≥ 10KHz
Notes:
- In V/f and V/f + PG control mode if the speed and torque are constant, the variable carrier frequency mode
(11-01=0) can be selected to reduce the carrier frequency based on output frequency.
- If the carrier frequency proportional gain (11-32) > 6 and 11-30 < 11-31, error message “SE01” out of range
will appear on the keypad.
- If the minimum limit (11-31) is set higher than the maximum limit (11-30), the minimum limit will be ignored
and the carrier frequency will be set at the highest limit (11-30).
- In xed carrier frequency mode (11-01 = 2-16) parameters 11-30, 11-31 and 11-32 are not used.
- In SLV and SV control mode, the maximum limit of the carrier frequency is xed at 11-30.
Code Parameter Name / Range
11-28 Frequency Gain of Over Voltage Prevention 2
1~200%
11-33 DC Voltage Filter Rise Amount
0.00~1.00 V
11-34 DC Voltage Filter Fall Amount
0.00~1.00 V
11-35 DC Voltage Filter Deadband Level
0.0~99.0 V
11-36 Frequency gain of OV prevention
0.000~1.000
11-37 Frequency limit of OV prevention
0.00~10.00 Hz
11-38 Deceleration start voltage of OV prevention
200~400 V :
230V
400~800 V : 400V
11-39 Deceleration end voltage of OV prevention
300~600 V :
230V
600~1200 V : 400V
11-40 OV prevention selection
0: Disable
1: OV prevention Mode 1
2: OV prevention Mode 2
3: OV Prevention Mode 3
VDI100 • Instruction manual
229