Installation In Combination With Thermistor Module Mcb 112 - Danfoss VLT Series Operating Instructions Manual

Installation
3.3 Installation in Combination with
Thermistor Module MCB 112
NOTICE
Combination of Thermistor Module MCB 112 and Safe
3 3
Torque Off function is only available for VLT
Drive FC 102, VLT
AutomationDrive FC 301 enclosure type A1.
Thermistor Module 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 (such as
emergency stop button, safetyguard switch, etc.)
that activates Safe Torque Off. This means that
the output to Safe Torque Off 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 Safe Torque Off terminal 37, see
Illustration 3.3.
8
VLT
®
®
AutomationDrive FC 302, and VLT
®
Frequency Converters - Safe Torque Off Operating Instructions
Hazardous
Area
HVAC
®
PTC
Sensor
Par. 5- 19
Terminal 37 Safe Stop
Illustration 3.3 Combination of a Safe Torque Off Application
and an MCB 112 Application
Illustration 3.3 shows a Restart input for the external safety
device. This means that in this installation 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 MCB 112 Operating Instructions for
further details.
MG37D102 - Rev. 2013-11-15
-
Non Hazardous Area
PTC Thermistor Card
MCB112
X44/ 1 2 3 4 5 6 7 8 9 10 11 12
Digital Input
e.g. Par 5-15
12 13 18 19 27 29 32 33 20 37
DI DI
Safe Stop
Safety Device
SIL 2
Safe AND Input
Safe Output
Manual Restart