Zero-Speed Mode; V/F Curve Selection - Delta MS300 Series User Manual

CALL NOW 800-985-6929
Chapter 12 Description of Parameter SettingsMS300

Zero-speed Mode

Settings
 When the frequency command of drive is less than Fmin (Pr. 01-07, Pr. 01-41), the drive will operate
by this parameter.
 When it is set to 0, the AC motor drive will be in waiting mode without voltage output from terminals U,
V, W.
 When it is set to 1, it will execute DC brake by Vmin (Pr. 01-08 and Pr. 01-42) in V/F and SVC modes.
 When it is set to 2, the AC motor drive will run by Fmin (Pr. 01-07, Pr. 01-41) and Vmin (Pr. 01-08, Pr.
01-42) in V/F and SVC modes.
 In V/F, SVC modes:

V/F Curve Selection

Settings
 When setting to 0, refer to Pr. 01-01~01-08 for motor 1 V/F curve. For motor 2, please refer to
Pr. 01-35~01-42.
 When setting to 1 or 2, 2
 If motor load is variable torque load (torque is in direct proportion to rotating speed, such as the load
of fan or pump), load torque will be low at low rotating speed, decrease input voltage to make
magnetic field of input current smaller, which will reduce flux loss and iron loss of the motor to raise
the entire efficiency.
 When setting high power of V/F curve, it is lower torque at low frequency, and the drive is not suitable
for rapid acceleration / deceleration. It is recommended NOT to use this parameter for the rapid
acceleration / deceleration.
CALL NOW 800-985-6929
http://www.deltaacdrives.com
0: Output waiting
1: Zero-speed operation
2: Fmin (Refer to Pr. 01-07, 01-41)
fout
01-34=0
stop output
fmin
01-07
0Hz
stop waiting for output
0: V/F curve determined by Pr. 01-00~01-08
th
1: 1.5 V/F curve
nd
2: 2 V/F curve
nd rd
and 3 voltage frequency setting are invalid.
01-02
Voltage %
100
90
80
70
60
50
40
30
20
10
0
20
http://www.deltaacdrives.com
01-34=1
0Hz
0Hz oper ation
(DC br ake)
1.5 power c urve
Square curve
80 100
40 60
12.1-01-11
Email: info@deltaacdrives.com
Factory Setting: 0
01-34=2
Factory Setting: 0
01-01
F requenc y%
Email: info@deltaacdrives.com