Basic Specifications - YASKAWA CR700 Technical Manual

2. Basic Specifications

The CR700 is a drive designed especially for use with cranes. The basic specifications of the
CR700 are based on the information described in the CR700 Technical Manual. Refer to the
CR700 Technical Manual for more information about how to use the keypad and Auto-Tuning
methods.
 Precautions before Use
When using the drive with a lifting and lowering shaft, wire the drive so that hoisting direction
of the machine is the Forward Run command and the lowering direction of the machine is the
Reverse Run command (all control modes). If the movement of the machine and the direction
of the Run commands do not match, the functions and performance of the crane software will
be adversely affected, and it will not be possible to obtain sufficient performance from the
machine. If the direction of motor rotation does not match the machine, swap two phases of
the power lines to the motor and change F1-05 (Encoder 1 Rotation Selection) if the motor
has an encoder to set the hoisting direction of the machine to the Forward Run command and
the lowering direction of the machine to the Reverse Run command.
Install a fall detector or overspeed detector for safety.
 General Safety
• Install a holding brake.
• Implement safety measures such as fall prevention on the machine side.
• Ensure that the holding brake will be applied by an external sequence when there is an
emergency or the power supply is turned OFF.
• Implement a safety circuit that uses the fault relay of this product to apply the holding brake
when a fault occurs.
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