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Chapter 6 Control Modes of Operation|ASDA-B Series
Revision February 2008, Doc. Name: 2006PDD23000009 6-37
If the users desire to control electromagnetic brake via external controller, not by the servo drive, the
users must execute the function of electromagnetic brake during the period of time when servo motor is
braking. The braking strength of motor and electromagnetic brake must be in the same direction when
servo motor is braking. Then, the servo drive will operate normally. However, the servo drive may
generate larger current during acceleration or at constant speed and it may the cause of overload (servo
fault).
Timing chart for using servo motor with electromagnetic brake:
1. When the setting value of P1-43 is greater than or equal to 0 (zero)
SON
(Digital Input)
ON
OFF
MBT1
(P1-42)
BRKR
(Digital Output)
OFF
ON
OFF OFF
MBT2
(P1-43)
When SERVO OFF (when DI SON is not activated), the BRKR output goes Off (electromagnetic
brake is locked) after the delay time set by P1-43 is reached.
2. When the setting value of P1-43 is greater than or equal to 0 (zero)
ON
OFF
MBT1(P1-42)
OFF
ON
OFF
OFF
MBT2(P1-43)
OFF
ON
OFF
SON
(Digital Input)
BRKR
(Digital Output)
SON
(Digital Output)
When SERVO OFF (when DI SON is not activated), if the BRKR output goes Off
(electromagnetic brake is locked), the servo motor goes Off after the delay time set by P1-43 is
reached.