YASKAWA CR700, Technical Manual, Page: 194 / 886

3.10 Crane Application Setup Procedure
194 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
3.10 Crane Application Setup Procedure
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External Interlock
In applications where the system will be negatively impacted if the drive goes down, always create an interlock
between fault relay output and the Ready signal of a multi-function digital output.
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Drive Ready
MFDO: The Drive Ready (READY) signal turns on when the drive is ready and running. The READY signal will
be switched OFF in the following situations if the drive cannot be operated, even when no fault signal is detected
or output, and even when the Run command is entered.
• The drive is de-energized
• During a fault
• There is problem with the control power supply
• There is a parameter setting error that will not let the drive run, although a Run command is entered
• There is an overvoltage or undervoltage fault during stop, and the drive detects faults and stops when the Run
command is entered
• When the drive is in the Programming mode and will not accept a Run command even when entered
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Run Command
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Run
Before operating the crane, make sure that the Forward Run command rotates the motor to raise the load, and that
the Reverse Run command rotates the motor to lower the load. These conditions must be met to start hoisting or
lowering:
• A speed reference signal set with MFDI is input.
• The Safe Disable signal is input from an external source to terminal H1-HC and H2-HC (this is separate from a
baseblock situation).
• The Software baseblock command signal is not input from any of the MFDI terminals (this is separate from a
baseblock situation).
• The conditions must be met to output a Brake release command.
– Output frequency after a soft start ≥ Brake release frequency
– Output current > Brake release current
– Torque reference ≥ Brake release torque (OLV control only)
• When
H1-xx = 0 [Brake Release Check]
, the magnetic contactor closes.
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Stop
When the Run command (Forward or Reverse) is cleared, the crane will stop operation.
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Run Command Method Selection
You can select how to enter the Run command (FWD/REV) to the drive with b1-02 [Run Command Selection 1] .
b1-02 Setting Name Description
0 Keypad
Use the keypad to enter the Forward Run/Reverse Run command. Use this operation only in a test
run.
1 Digital Input
Use the control circuit terminals S1 and S2 to enter the Forward Run/Reverse Run command.
Usually, use this setting.
2 MEMOBUS/Modbus Communications Use MEMOBUS/Modbus communications to enter the Forward Run/Reverse Run command.
3 Option PCB Use an input option card to enter the Forward Run/Reverse Run command.
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Operation When the External Baseblock Command is Input and Cleared
To prevent load slipping when clearing the Baseblock command, the drive does not have a Speed Search function.