Mcb 112 Ptc Thermistor Card - Danfoss VLT AutomationDrive FC 300 Design Manual

Options and Accessories
Terminal numbers:
Terminal 35: - external 24 V DC supply.
Terminal 36: + external 24 V DC supply.
Follow these steps:
1. Remove the LCP or Blind Cover
2. Remove the Terminal Cover
3. Remove the Cable Decoupling Plate and the
plastic cover underneath
4. Insert the 24 V DC Back-up External Supply
Option in the Option Slot
5. Mount the Cable Decoupling Plate
6. Attach the Terminal Cover and the LCP or Blind
Cover.
When MCB 107, 24 V back-up option is supplying the
control circuit, the internal 24 V supply is automatically
disconnected.
Illustration 9.22 Connection to 24 V Back-up Supply on Frame
Sizes A2 and A3.
Illustration 9.23 Connection to 24 V Back-up Supply on Frame
Sizes A5, B1, B2, C1 and C2.
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®
VLT AutomationDrive FC 300 Design Guide, 0.25-75 kW

9.8 MCB 112 PTC Thermistor Card

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 frequency
converter with Safe Stop.
For information on mounting and installation of the
option, please see 9.1.2 Mounting of Option Modules in
Slot B. See also 8 Application Examples for different
application possibilities.
X44/1 and X44/2 are the thermistor inputs, X44/12 will
enable safe stop of the frequency converter (T-37) if the
thermistor values make it necessary and X44/10 will inform
the frequency converter that a request for Safe Stop came
from the MCB 112 in order to ensure a suitable alarm
handling. One of the digital inputs parameters of the
frequency converter (or a digital input of a mounted
option) must be set to [80] PTC Card 1 in order to use the
information from X44/10. 5-19 Terminal 37 Safe Stop
Terminal 37 Safe Stop must be configured to the desired
Safe Stop functionality (default is Safe Stop Alarm).
MS 220 DA
Motor protection
MCB 112 PTC Thermistor Card
X44
Illustration 9.24 Installation of MCB 112
ATEX Certification with FC 302
The MCB 112 has been certified for ATEX which means
that the frequency converter together with the MCB 112
can now be used with motors in potentially explosive
atmospheres. See the Operating Instructions for the MCB
112 for more information.
®
MG33BE02 - VLT is a registered Danfoss trademark
Reference for 10, 12
11
20-28 VDC
10
20-28 VDC
12
1 2 3 4 5 6 7 8
12 13 18 19 27 29
Control Terminals of FC302
T T
P P
PTC
M3~
ZIEHL
Option B
Code No.130B1137
10 mA
60 mA
9 10 11 12
32 33 20 37
169
9 9