Danfoss VLT HVAC User Manual

1.1.10. Safe Stop of the Frequency Converter
For versions fitted with a Safe Stop terminal 37 input, the frequency converter can perform the
safety function
Safe Torque Off (As defined by draft CD IEC 61800-5-2) or Stop Category 0 (as
defined in EN 60204-1).
It is designed and approved suitable for the requirements of Safety Category 3 in EN 954-1. This
functionality is called Safe Stop. Prior to integration and use of Safe Stop in an installation, a
thorough risk analysis on the installation must be carried out in order to determine whether the
Safe Stop functionality and safety category are appropriate and sufficient. In order to install and
use the Safe Stop function in accordance with the requirements of Safety Category 3 in EN 954-1,
the related information and instructions of the VLT
®
HVAC Drive Design Guide MG.11.BX.YY must
be followed! The information and instructions of the Operating Instructions are not sufficient for
a correct and safe use of the Safe Stop functionality!
130BA491
Illustration 1.1: A similar certificate will be made available for the FC 102!
VLT
®
HVAC Drive Operating Instructions 1. Safety
MG.11.A4.02 - 09.10.06. VLT
®
is a registered Danfoss trademark 7
1

Danfoss VLT HVAC Specifications

General

Brand	Danfoss
Model	VLT HVAC
Category	Controller
Language	English