3.11 Interlocking with Connected Machinery
For
safety reasons, applications that may be affected by the operation status of the drive should be set up so that operation can
only occur when the drive is ready to operate. A "Drive ready" and "Fault" signal should be assigned to the multi-function
outputs to guarantee interlock with application.
u
Drive Ready Signal
When the “Drive ready” signal has been set to one of the multi-function contact outputs, that output will close whenever the
drive is ready to accept a Run command or is already running. Under the following conditions the Drive ready signal will
switch off and remain off, even if a Run command is entered:
• when the power supply is shut off
• during a fault
• when there is problem with the control power supply
• when a parameter setting error makes the drive unable to run even if a Run command has been entered
• when a fault such as overvoltage or undervoltage is triggered as soon as the Run command is entered
• when the drive is in the Programming mode and will not accept a Run command even when entered.
3.11 Interlocking with Connected Machinery
52
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
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