Summa Series Servodrive Product Manual
Application Functions
Document Version: V1.01
(Dec, 2019)
© 2019 ESTUN Automation Co., Ltd. All right reserved.
7-9
7.5.5
Output Timing of /BK Signal when Motor is operating
If an alarm occurs or S-OFF command is received while the Motor is operating, the Motor will start
stopping and the /BK signal will be turned OFF. You can adjust the timing of /BK signal output by setting
the Brake Enable Waiting Time (Pn508).
/S-ON, alarm,
or power OFF
Motor speed
Servo ON
Servo OFF
Pn508
/BK signal
Pn507
Motor stopped with dynamic
brake or by coasting
ON
(Brake released)
OFF
(Brake applied)
The /BK signal goes to H level (brake ON) when either of the following conditions is satisfied:
When the Motor speed falls below the level set in Pn507 after the power to the Motor is turned OFF.
When the time set in Pn508 is exceeded after the power to the Motor is turned OFF.
Parameter
Name
Range
Unit
Default When Enabled
Pn507
Brake Enable Speed Threshold
10 to 100
1rpm
100
Immediately
Pn508
Brake Enable Waiting Time
10 to 100
10ms
50
Immediately
7.6
Overload Enhancement
Overload Enhancement function can enhance the Motor load for instantaneous more than 2 times rated
load, which can be used in the conditions that require frequent start and stop.
Set Pn003.3=1 for enabling this function, and it takes effect when the Motor speed is over 30 rpm.
Parameter Setting
Meaning
When
Enabled
Pn003.3
0
The overload enhancement function is disabled.
After restart
1
The overload enhancement function is enabled.
NOTE
: This function is not applicable to EM3A series Motors.
