Delta Electronics none manual Overload Characteristics, „ Overload Protection Function

Chapter 11 SpecificationsASDA-AB Series

11.4 Overload Characteristics

„Overload Protection Function

Overload protection is a built-in protective function to prevent a motor from overheating.

„Occasion of Overload

1.Motor was operated for several seconds under a torque exceeding 100% torque.

2.Motor had driven high inertia machine and had accelerated and decelerated at high frequency.

3.Motor UVW cable or encoder cable was not connected correctly.

4.Servo gain was not set properly and caused motor hunting.

5.Motor holding brake was not released.

„Chart of load and operating time (ECMA-C30401……)

1000

(seconds)	100
Operating Time	10
	1

0.1

0 50 100 150 200 250 300

Load (%) rated torque

Load	Operating
	Time
120%	139.335s
140%	27.585s
160%	14.235s
180%	8.9625s
200%	6s
220%	4.4925s
240%	3.2925s
260%	2.58s
280%	2.07s
300%	1.6125s

11-8 Revision March 2008, Doc. Name: 2007PDD23000011