Safe Torque Off (Sto) - Danfoss VLT HVAC Drive FC 102 Operating Instructions Manual

Safety
WARNING
EQUIPMENT HAZARD
2 2
Contact with rotating shafts and electrical equipment
can result in death or serious injury.
•
Ensure that only trained and qualified
personnel perform installation, start up, and
maintenance.
•
Ensure that electrical work conforms to national
and local electrical codes.
•
Follow the procedures in these operating
instructions.
WARNING
UNINTENDED MOTOR ROTATION
WINDMILLING
Unintended rotation of permanent magnet motors can
result in serious injury or equipment damage.
•
Ensure that permanent magnet motors are
blocked to prevent unintended rotation.
CAUTION
INTERNAL FAILURE HAZARD
An internal failure in the frequency converter can result
in serious injury, when the frequency converter is not
properly closed.
•
Ensure that all safety covers are in place and
securely fastened before applying power.

2.2.2 Safe Torque Off (STO)

STO is an option. To run STO, additional wiring for the
frequency converter is required. Refer to VLT
Converters Safe Torque Off Operating Instructions for further
information.
8
Operating Instructions
®
Frequency
Danfoss A/S © Rev. 06/2014 All rights reserved. MG16B202