YASKAWA UAK series User Manual page 171

8 Operation
8.4.3 Holding Brakes
(2) Brake Signal (/BK) Setting
This output signal controls the brake.
The /BK signals turn OFF (applies the brake) when an alarm is detected or the servomotor power is OFF.
The brake OFF timing can be adjusted with Pn506.
Type
Output
8-14
• Select the optimum surge absorber in accordance with the applied brake current and
brake power supply.
When using the LPSE-2H01-E power supply: Z10D471 (Made by SEMITEC Corpora-
When using the LPDE-1H01-E power supply: Z10D271 (Made by SEMITEC Corpora-
When using the 24-V power supply: Z15D121 (Made by SEMITEC Corporation)
• After the surge absorber is connected, check the total time the brake is applied for the
system. Depending on the surge absorber, the total time the brake is applied can be
changed.
• Configure the relay circuit to apply the holding brake by the emergency stop.
• The holding break stops operating if the signal line is disconnected when positive
logic is the reverse of the polarity of the break signals (/BK1 and /BK2). If it is neces-
sary to use this type of setting, be sure to check operation and confirm that there are
no safety problems.
• A short-circuit fault may occur in the output circuit due to a wiring error or the applica-
tion of an incorrect voltage. If such a fault occurs, the holding break will not operate,
which may result in damage to machinery or an accident causing injury. Always imple-
ment safety measures to ensure safety in case such a fault should occur.
Connector
Name
Pin Number
For pin numbers of
/BK1, /BK2 CN1, refer to 7.2.5 I/
O Signals.
The /BK signals remain ON during overtravel. The brake is released.
tion)
tion)
Relay Circuit Example
SERVOPACK
5 to 24 VDC
Photocoupler
0 V
Setting
ON (close)
OFF (open)
Emergency stop
Meaning
Releases the brake.
Applies the brake.