Delta VFD9A0MS43ANSHA User Manual

Chapter 12 Description of Parameter SettingsMS300 (High Speed Model)
12-14-6
40
20
60
80
100
25 50 100 150
Motor coaxial cooling curve figure
Rated frequency of motor %
Rated current
of motor %
Rated current
of motor %
Rated frequency of motor %
Motor independent cooling curve figure
25 50 100 150
40
20
60
80
100
75 125 75 125
 The electronic thermal relay action condition should be follow the settings of Pr. 14-80 /
Pr. 14-82:
1. Pr. 14-80 / Pr. 14-82 set to 0:Inverter motor (with external forced cooling):
When drive output current is higher than the rated current 150 % of motor (please refer to the
motor independent cooling curve figure as above), drive starts to accumulate time if the
accumulation time exceeds the settings of Pr. 14-81 / Pr. 14-83, electronic thermal relay will be
actuated.
2. Pr. 14-80 / Pr. 14-82 set to 1:Standard motor (motor with fan on the shaft)：
When drive output current is higher than the rated current 150 % of motor (please refer to the
motor coaxial cooling curve figure as above), drive starts to accumulate time if the
accumulation time exceeds the settings of Pr. 14-81 / Pr. 14-83, electronic thermal relay will be
actuated. The electronic thermal relay action time will depend on the drive output current (load
rate of motor %) to make appropriate adjustments, the short action time when the current is
high, the long action time when the current is low, please see the figure showing as below:
50
200
100
150
0
250
300
F=50Hz
F=40Hz
F=20Hz
450
350
400
500
550
600
12 24 36 48 60 72 84 96
108 120 132 144 156 168 180 192
Operation time
(sec.)
Motor loading rate
(%)

Delta VFD9A0MS43ANSHA Specifications

General

Brand	Delta
Model	VFD9A0MS43ANSHA
Category	Controller
Language	English