Installation; Safety Instructions; Sto Installation - Danfoss VLT Operating Instructions Manual

Installation

3 Installation

3.1 Safety Instructions

See chapter 2 Safety for general safety instructions.

3.2 STO Installation

For motor connection, AC mains connection, and control
wiring, follow the instructions for safe installation in the
Operating Instructions of the frequency converter.
For installation with the Ex-certified VLT
Card MCB 112, see chapter 3.3 Installation in Combination
®
with VLT PTC Thermistor Card MCB 112.
Enable the integrated STO as follows:
1. Remove the jumper wire between control
terminals 37 and 12 or 13. Cutting or breaking
the jumper is not sufficient to avoid short-
circuiting. (See jumper on Illustration 3.1)
Illustration 3.1 Jumper between Terminal 12/13 (24 V) and 37
2. Connect an external safety monitoring relay via a
NO safety function to terminal 37 (STO) and
either terminal 12 or 13 (24 V DC). Follow the
installation instructions for the safety monitoring
relay, and ensure that the safety monitoring relay
complies with Category 3 /PL "d" (ISO 13849-1) or
SIL 2 (EN 62061 and IEC 61508).
MG37D202
Operating Instructions
FC
®
PTC Thermistor
1
2
3
4
Illustration 3.2 Installation to Achieve a Stop Category 0 (EN
60204-1) with Safety Cat. 3/PL "d" (ISO 13849-1) or SIL 2 (EN
62061 and IEC 61508).
3.
Danfoss A/S © 09/2014 All rights reserved.
12
37
4
Safety relay (cat. 3, PL d or SIL2
Emergency stop button
Reset button
Short-circuit protected cable (if not inside installation IP54
cabinet). See ISO 13849-2 Table D.4 for further information.
Complete wiring according to the instructions
given in the Operating Instructions of the
frequency converter.
3
3
1
2
7
3