Delta Electronics VFD-M manual Pr.105, Control Mode, Pr.106, Pr.107, Pr.108, Pr.109, Pr.110

Pr.105 Control Mode

Chapter 4 Parameters

Factory Setting: 00

Settings 00	V/F Control
01	Sensor-less Control

Pr.106	Rated Slip
	Settings 0.00 to 10.00 Hz

Unit: 0.01Hz

Factory Setting: 3.0

Example of Slip calculation: The rated speed of 4 poles/3 φ/ 60Hz/ 220V on the nameplate is

1710RPM. The rated slip is then: 60-(1710/(120/P))=3Hz. (being P the number of poles)

Pr.107	Vector Voltage Filter		Unit: 2ms
	Settings	5 to 9999	Factory Setting: 10
Pr.108	Vector Slip Compensation Filter		Unit: 2ms
	Settings	25 to 9999	Factory Setting: 50
This parameter sets the low-pass filter in vector control.
Example: Pr. 107 = 10 X 2ms =20ms, Pr. 108 = 50 X 2 ms =100ms.
Pr.109	Selection for Zero Speed Control
			Factory Setting: 00
	Settings	00 No output
		01 Control by DC voltage
This parameter is used to select the control method at zero speed. If set to 01, the voltage in
Pr.110 is used for holding torque.
Pr.110	Voltage of Zero Speed Control		Unit: 0.1%
	Settings	0.0 to 20.0 % of Max. output voltage (Pr.05)	Factory Setting: 5.0

This parameter should be used in conjunction with Pr.109.

Example: if Pr.05 = 100 and this parameter is set to 20.0, the level of output voltage is 100X20.0% = 20.

Pr.111 Deceleration S Curve

Settings 00 to 07Factory Setting: 00

When this parameter is set differently to zero, it selects a deceleration S-curve and overrides Pr.14. Otherwise, Pr.14 sets the deceleration S-curve.

Revision May 2008, ME14, SW V3.04 4-75