Safe Stop Installation (Fc 302 And Fc 301 - A1 Enclosure Only) - Danfoss FC 300 Design Manual

FC 300 Design Guide
It is designed and approved suitable for the re-
quirements of Safety Category 3 in EN 954-1. This
functionality is called Safe Stop. Prior to integra-
tion 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 appro-
priate and sufficient. In order to install and use
the Safe Stop function in accordance with the re-
quirements of Safety Category 3 in EN 954-1, the
related information and instructions of the FC 300
Design Guide MG.33.BX.YY must be followed! The
information and instructions of the Operating In-
structions are not sufficient for a correct and safe
use of the Safe Stop functionality!

Safe Stop Installation (FC 302 and FC 301 - A1 enclosure only)

To carry out an installation of a Category 0 Stop
(EN60204) in conformance with Safety Category
3 (EN954-1), follow these instructions:
1. The bridge (jumper) between Terminal 37
and 24 V DC must be removed. Cutting or
breaking the jumper is not sufficient. Re-
move it entirely to avoid short-circuiting.
See jumper on illustration.
2. Connect terminal 37 to 24 V DC by a
short-circuit protected cable. The 24 V DC
voltage supply must be interruptible by an
EN954-1 Category 3 circuit interrupt de-
vice. If the interrupt device and the fre-
quency converter are placed in the same
installation panel, you can use a regular
cable instead of a protected one.
The illustration below shows a Stopping Category 0 (EN 60204-1) with safety Cat. 3 (EN 954-1). The
circuit interrupt is caused by an opening door contact. The illustration also shows how to connect a non-
safety related hardware coast.
46
Introduction to FC 300
Bridge jumper between terminal 37 and 24 VDC
MG.33.B7.02 - VLT is a registered Danfoss trademark