YASKAWA CIPR-GA50C Serie Manual De Instrucciones página 50

1 English
Switching from Usual Operation to "Safe Torque Off"
Turn OFF (open) safety input terminal H1 or H2 to enable the Safe Disable function.
When the Safe Disable function is enabled while the motor is operating, the drive output
and motor torque turn off and the motor always coasts to stop. The b1-03 [Stopping
Method Selection] setting does not have an effect on the stopping method.
The "Safe Torque Off" status is only possible with the Safe Disable function. Clear the
Run command to stop the drive. Turning off drive output (a baseblock condition) ≠ "Safe
Torque Off".
Note:
• When it is necessary to ramp to stop the motor, do not turn off terminals H1 and H2 until the motor fully
stops. This will prevent the motor from coasting to stop during usual operation.
• A maximum of 3 ms will elapse from when terminals H1 or H2 shut off until the drive switches to the "Safe
Torque Off" status. Set the OFF status for terminals H1 and H2 to hold for at least 3 ms. The drive may not be
able to switch to the "Safe Torque Off" status if terminals H1 and H2 are only open for less than 3 ms.
Going from "Safe Torque Off" to Usual Operation
The safety input will only release when there is no Run command.
• During Stop
When the Safe Disable function is triggered during stop, close the circuit between
terminals H1-HC and H2-HC to disable "Safe Torque Off". Enter the Run command
after the drive stops correctly.
• During Run
If you trigger the Safe Disable function during run, clear the Run command, then close
the circuit between terminals H1-HC and H2-HC to disable "Safe Torque Off". Enter
the Stop command, then enter the Run command when terminals H1 and H2 are
activated.
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Validating the Safe Disable Function
After you replace parts or do maintenance on the drive, complete all necessary wiring to
start the drive, then follow these steps to test the Safe Disable input. Keep a record of the
test results.
1. When the two input channels are OFF (Open), make sure that the keypad flashes STo
[Safe Torque OFF], and make sure that the motor is not running.
2. Monitor the ON/OFF status of the input channels and make sure that MFDO set to
the EDM function operates as shown in
If one or more of the these items are true, the ON/OFF status of the MFDO may not
display correctly on the keypad.
• Incorrect parameter settings.
• A problem with an external device.
• The external wiring has a short circuit or is disconnected.
• There is damage to the device.
Find the cause and repair the problem to correctly display the status.
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Table 1.13.
YASKAWA TOMPC7106173UA GA500 Installation and Operation Instruction