Installation - YASKAWA T1000V Technical Manual

◆ Installation

If the Safe Disable function is utilized, the wire link between the terminals HC and H1 that is installed at shipment must
be removed entirely.
Connect the drive to an ISO13849-1, Safety Category 3 interrupting device so that in case of a Safe Disable request the
connection between the terminals HC and H1 is opened.
Figure D.9
Installation Precautions
■
• To ensure the Safe Disable function appropriately fulfills the safety requirements of the application, a thorough risk
assessment for the safety system must be carried out.
• The drive must be installed in an enclosure with a protection degree of at least IP54 in order to maintain ISO13849-1,
safety category 3 compliance.
• If the safety device and the drive are installed in separate cabinets, install the Safe Disable wires in a manner
preventing short circuits.
• The Safe Disable function does not cut the power supply to the drive and does not provide electrical isolation. Before
any installation or maintenance work is done, the power supply of the drive must be switched off.
• Consider the following when using PM motors: When the Safe Disable function is active, a failure in two of the drive
power devices can occur and current will continue to flow through the motor winding. This failure will not produce
torque in an induction motor, however, when occurring in a PM motor, torque will be produced and cause an alignment
of the rotor magnets, which may cause the rotor to turn up to 180 degrees electrically. Ensure that this possible failure
mode is not safety-critical for the application.
• The wiring distance for the Safe Disable input should not exceed 30 m.
• The time from opening the Safe Disable input until the drive output is switched off is less than 1 ms.
• When utilizing the Safe Disable function use the recommended EMC filters manufactured by Schaffner only.
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
ISO13849-1 Safety
Cat, 3 Device
Figure D.9 Safe Disable Wiring Example
D.4 Safe Disable Input Precautions
Power Supply
Drive
Controller
HC
H1
M
D
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