Application Examples; Connecting Safe Digital Inputs - Danfoss VLT MCB 150 Operating Instructions Manual

Installation
FC302
MCB151
24V 10
A 4
GND 11
Illustration 4.9 Y/31 Connecting MCB 151 to Proximity Switch
(only HTL)
NOTICE
The proximity switch cable must be screened and
terminated to chassis at both ends (at the proximity
switch side and at the option side).
1
>2x S
n
1 Measuring plate
2 Proximity switch
3 Disc (non conducting material)
Illustration 4.10 Gear Wheel for Proximity Switch
MG34W302
Operating Instructions
The operating distance S set to half the nominal operating
distance Sn, corresponds approximately to the optimum
conditions with respect to resolution and switching
frequency.
NOTICE
When using PNP proximity switch as encoder feedback,
set 42-14 Feedback Type to [1] Without direction info.

4.3 Application Examples

4.3.1 Connecting Safe Digital Inputs

The following pages contain examples of connecting the
fail-safe digital input according to EN ISO 13849-1 and EN
IEC 62061. The examples apply in cases where all
components are installed in a control cabinet.
A
2
A
B
Illustration 4.11 Connecting a Sensor, e.g. 2-channel
Emergency Stop Mushroom Push Button or Limit Switch
S /2
n
Tx
A
Illustration 4.12 Connecting an Electronic Sensor, e.g. Safety
Light Curtain
3
Danfoss A/S © Rev. 2014-02-11 All rights reserved.
MCB15x
1
10
12
3
11
2-channel emergency stop switch
FC 302
MCB15x
OSSD 1
Rx
1
OSSD 2
3
24 V DC
12
0 V
11
FC 302
4 4
B
12
37
20
A
12
37
20
31