ASDA-B2  Chapter 7 Parameters 
Revision May, 2018  7-103 
Setting value: 0x07 
DO 
Name 
Function Description of Digital Output (DO) 
Trigger 
Method 
Control 
Mode 
ALRM 
When the alarm occurs, this DO is ON. 
(Except forward / reverse limit, communication error, 
undervoltage) 
Level 
Triggered 
All 
 
Setting value: 0x08 
DO 
Name 
Function Description of Digital Output (DO) 
Trigger 
Method 
Control 
Mode 
BRKR 
When the signal of brake control is output, adjust the 
setting of parameter P1-42 and P1-43. 
 
Level 
Triggered 
All 
 
Setting value: 0x10 
DO 
Name 
Function Description of Digital Output (DO) 
Trigger 
Method 
Control 
Mode 
OLW 
When reaching the overload setting, this DO is ON. 
t
OL
= Overload allowable time of the servo x Setting 
value of P1-56, when the overload accumulative 
time exceeds t
OL, 
it will output pre-overload warning 
(OLW). However, if the overload accumulative time 
exceeds the overload allowable time of the servo, it 
will output pre-overload error (ALRM). 
For example: 
The setting value of pre-overload warning is 60% 
(P1-56=60). 
When the output average load of the servo drive is 
200%, if the output time exceeds 8 seconds, the servo 
drive will show the overload alarm (AL.006). 
t
OL
= The output average load of the servo exceeds 
200% for 8 seconds x parameter setting value = 
8sec x 60% = 4.8sec 
Result: When the output average load of the servo 
drive exceeds 200% for 4.8 seconds, this DO is ON. If it 
exceeds for 8 seconds, then, DO.ALRM is ON. 
Level 
Triggered 
All