Vlt ® Ptc Thermistor Card Mcb - Danfoss VLT AutomationDrive FC 301 Design Manual

Options and Accessories
11.2.6 VLT ®
PTC Thermistor Card MCB 112
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 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 frequency converter (T-37), if the
thermistor values make it necessary, and X44/10 informs
the frequency converter 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
Reference for 10, 12
11
20-28 VDC
10
20-28 VDC
12
X44
1 2 3 4 5 6
12 13 18 19
Control Terminals of FC302
T T
P P
PTC
M3~
Illustration 11.15 Installation of MCB 112
Electrical Data
Resistor connection
PTC compliant with DIN 44081 and DIN 44082
Number
Shut-off value
Reset value
Trigger tolerance
Collective resistance of the sensor loop
Terminal voltage
Sensor current
Short circuit
Power consumption
®
VLT AutomationDrive FC 301/FC 302 Design Guide, 0.25-75 kW
ZIEHL
Option B
Code No.130B1137
10 mA
60 mA
7 8 9 10 11 12
27 29 32 33 20 37
MG33BF02 - Rev. 2013-12-20
ATEX Certification with FC 102, FC 202 and FC 302
The MCB 112 has been certified for ATEX, which means
that the frequency converter with the MCB 112 can be
used with motors in potentially explosive atmospheres. See
®
the VLT PTC Thermistor Card MCB 112 Operating
Instructions for more information.
Illustration 11.16 ATmosphère EXplosive (ATEX)
≤ 2.5 V for R ≤ 3.65 Ω, ≤ 9 V for R = ∞
11
1..6 resistors in series
3.3 Ω.... 3.65 Ω ... 3.85 Ω
1.7 Ω .... 1.8 Ω ... 1.95 Ω
± 6 °C
< 1.65 Ω
≤ 1 mA
20 Ω ≤ R ≤ 40 Ω
60 mA
161
11