Danfoss VLT AutomationDrive FC 301 Series Design Manual page 174

Options and Accessories
11.2.6 VLT
The MCB 112 option makes it possible to monitor the
temperature of an electrical motor through a galvanically-
isolated PTC thermistor input. It is a B option for adjustable
frequency drive with Safe Torque Off.
For different application possibilities, see
chapter 10 Application Examples.
X44/1 and X44/2 are the thermistor inputs. X44/12 enables
Safe Torque Off of the adjustable frequency drive (T-37), if
the thermistor values make it necessary, and X44/10
informs the adjustable frequency drive that a request for
safe torque off came from the MCB 112 to ensure a
suitable alarm handling. One of the digital inputs
parameters (or a digital input of a mounted option) must
be set to [80] PTC Card 1 to use the information from
X44/10. Configure 5-19 Terminal 37 Safe Stop to the desired
Safe Torque Off functionality (default is Safe Stop Alarm).
MS 220 DA
Motor protection
MCB 112 PTC Thermistor Card
11 11
X44
1
T
P
PTC
M3~
Figure 11.15 Installation of MCB 112
172
®
PTC Thermistor Card MCB 112
ZIEHL
Option B
Code No.130B1137
Reference for 10, 12
11
20-28 VDC 10 mA
10
20-28 VDC
12 60 mA
2 3 4 5 6 7 8 9
12 13 18 19 27 29 32
Control Terminals of FC302
T
P
Design Guide
ATEX Certification with FC 102, FC 202 and FC 302
The MCB 112 has been certified for ATEX, which means
that the adjustable frequency drive with the MCB 112 can
be used with motors in potentially explosive atmospheres.
See the VLT
Manual for more information.
Figure 11.16 ATmosphère EXplosive (ATEX)
10 11 12
33 20 37
Rev. 2014-04-04 All rights reserved.
®
PTC Thermistor Card MCB 112 Instruction
MG33BF22