Inovance MD500T75G - Protections

MD500 User Manual 7. Description of Parameters
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7.6 Protections
This section introduces the functions on protecting the AC drive and the motor.
7.6.1 Motor Overload Protection
Function Code Parameter Name Setting Range Default
) Motor overload
protection selection
0: Disabled
1: Enabled
1
) Motor overload protection gain 0.20 to 10.00 1.00
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Figure 7-47 Inverse time-lag curve
Overload protection time
Current level (percentage
of rated motor current)
115% 125% 135%
145% 155% 165% 175%
80 min
40 min
15 min
6 min
185%
225%
30s
10s
245%
4 min
2.5 min
2 min
s
%
60s
When the motor running current reaches 175% of the rated motor current and the motor runs at this level for 2 minutes, Err11
(motor overload) is reported. When the motor running current reaches 115% of the rated motor current and the motor runs at this
level for 80 minutes, Err11 is reported.
Suppose that the rated motor current is 100 A.
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125 A for 40 minutes, Err11 is reported.
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125 A for 40 x 1.2 = 48 minutes, Err11 is reported.
Note
The motor overload protection supports the longest 80 minutes and the shortest 10 seconds.
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