Overload Gain - Delta ASDA-A3 Series User Manual

ASDA-A3

11.7.5 Overload gain

The overload gain setting is for protecting the motor from overheating. Under normal
circumstances, set PM.019 and PM.020 to 100% (default) or adjust the values according to the
following table. These parameters do not affect the motor performance. You can monitor the motor
load (overload counter) with the monitoring variable -91, which value range is from 0 to 100.
When the value reaches 100, it means the motor is overloaded and the servo alarm AL006
occurs.
The operating time in this section means the time required for the motor protection level to
reach the overload level from the normal level. When the protection level reaches the overload
level, AL006 is triggered. The measurement basis of the load ratio is 100%. When the ratio is
above 100%, it refers to the Load increase gain (PM.019); when the ratio is less than 100%, it
refers to the Load decrease gain (PM.020). The load ratio determines whether the overload
count is accumulated. When the load ratio accumulates over 100%, the operating time must be
taken into consideration, or else AL006 occurs. If the load ratio is below 100%, you do not need
to consider the operating time.
Load ratio
20%
40%
60%
80%
100%
120%
140%
160%
180%
200%
220%
240%
Note: for detailed parameter description, refer to Chapter 8 Parameters.
Operating time
0 12 sec × PM.020
12.3 sec × PM.020
13.6 sec × PM.020
16.3 sec × PM.020
22.6 sec × PM.020
N/A
263.8 sec × PM.019
35.2 sec × PM.019
17.6 sec × PM.019
11.2 sec × PM.019
8 sec × PM.019
6.1 sec × PM.019
4.8 sec × PM.019
Linear Motor and Third-Party Motor
Load ratio Operating time
260% 3.9 sec × PM.019
280% 3.3 sec × PM.019
300% 2.8 sec × PM.019
320% 2.5 sec × PM.019
340% 2.2 sec × PM.019
360% 2.0 sec × PM.019
380% 1.8 sec × PM.019
400% 1.6 sec × PM.019
420% 1.4 sec × PM.019
440% 1.3 sec × PM.019
460% 1.2 sec × PM.019
480% 1.1 sec × PM.019
500% 1 sec × PM.019
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