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Sigma II User’s Manual Chapter 5: Parameter Settings and Functions
5-69
Holding Brake Setting
Set the following parameters to adjust brake ON timing so the holding brake is
applied when the servomotor stops.
Set the brake timing used when the servo is turned OFF by input signal /S-ON
(CN1-40) or when an alarm occurs during motor operation.
Brake ON timing when the servomotor stops must be adjusted properly because
servomotor brakes are designed as holding brakes. Adjust the parameter settings
while observing equipment operation.
/BK Signal Output Conditions During Servomotor Operation
The circuit is open under either of the following conditions:
• Motor speed drops below the setting at Pn507 after servo OFF.
• The time set at Pn508 has elapsed since servo OFF.
The actual speed used will be the maximum speed even if Pn507 is set higher than the
maximum speed.
Parameter Signal Setting Description
Pn507
Brake Reference Output Speed
Level
Setting Range: 0 to 10000rpm
Default Setting: 100rpm
Speed/Torque Control,
Position Control
Pn508
Timing for Brake Reference Output
during Motor Operation
Setting Range: 0 to 100 x 10ms
Default Setting: 50 x 10ms
Speed/Torque Control,
Position Control
/S-ON input
Power OFF by
/S-ON (CN1-40)
input or alarm
occurrence
Motor speed
(rpm)
Pn-507
/BK output
Stop by dynamic brake
or coast to a stop.
(Pn001.0)
Pn508
Release
brake
Servo ON
Hold with brake
Servo OFF