Danfoss VLT HVAC Drive FC 102 Manuale operativo - Pagina 9

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Danfoss VLT HVAC Drive FC 102 Manuale operativo
Installation
FC
12
37
4
1
Safety relay (cat. 3, PL d or SIL2
2
Emergency stop button
3
Reset button
4
Short circuit protected cable (if not inside installation IP54
cabinet). See ISO 13849-2 Table D.4 for further information.
Illustration 3.3 Installation Example 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.
Complete wiring according to the instructions
given in the operating instructions/guides of the
frequency converter.
3.3 Installation in Combination with VLT
PTC Thermistor Card MCB 112
NOTICE
®
Combination of VLT
PTC Thermistor Card MCB 112 and
STO function is only available for VLT
®
102, VLT
AQUA Drive FC 202, VLT
®
302, and VLT
AutomationDrive FC 301 enclosure size
A1.
MG37D502
Operating Guide
3
1
2
®
®
HVAC Drive FC
®
AutomationDrive FC
Danfoss A/S © 01/2018 All rights reserved.
®
VLT
PTC Thermistor Card MCB 112 uses terminal 37 as its
safety-related switch-off channel.
•
Ensure that the output X44/12 of MCB 112 is
AND-ed with the safety-related sensor (for
example, emergency stop button and safeguard
switch), that activates STO. This means that the
output to STO terminal 37 is HIGH (24 V) only if
both the signal from MCB 112 output X44/12 and
the signal from the safety-related sensor are
HIGH. If at least 1 of the 2 signals is LOW, then
the output to terminal 37 must be LOW too.
•
Ensure that the safety device with AND-logic
complies with the needed safety level.
•
Short-circuit protect the connection from the
output of the safety device with safe AND-logic
to the STO terminal 37, see Illustration 3.4.
Hazardous
Non-Hazardous Area
Area
PTC Thermistor Card
X44/
1 2 3 4 5 6 7 8 9 10 11 12
Digital Input
PTC
e.g. Par 5-15
Sensor
12 13 18 19 27 29 32 33 20 37
Par. 5-19
Terminal 37 Safe Stop
Illustration 3.4 Combination of an STO Application and an
MCB 112 Application
Illustration 3.4 shows a restart input for the external safety
device. This means that in this installation,
parameter 5-19 Terminal 37 Safe Stop can be set to value [7]
PTC 1 & Relay W or [8] PTC 1 & Relay A/W. Refer to VLT
Thermistor Card MCB 112 Operating Instructions for further
details.
MCB 112
DI
DI
Safe Stop
Safety Device
SIL 2
Safe AND Input
Safe Output
Manual Restart
®
PTC
7
3
3