10.7 MCB 112 PTC Thermistor Card
The 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 FC 302 with Safe Stop.
For information on mounting and installation of the
option, please see 10.1.2 Mounting of Option Modules in
Slot B earlier in this section. See also 9 Application Examples
for different application possibilities.
X44/ 1 and X44/ 2 are the thermistor inputs, X44/ 12 will
enable safe stop of the FC 302 (T-37) if the thermistor
values make it necessary and X44/ 10 will inform the FC
302 that a request for Safe Stop came from the in order to
ensure a suitable alarm handling. One of the Digital Inputs
of the FC 302 (or a DI of a mounted option) must be set to
PTC Card 1 [80] 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
11
10
20-28 VDC 10 mA
12
20-28 VDC
60 mA
com
ZIEHL
X44
12 13 18 19 27 29 32 33 20 37
3
NC
4
NC
5
NC
6
NC
7
NC
8
NC
9
NC
10 11
NC
121
T1
2
T2
T
P
T
P
PTC
M3~
130BA638.10
DO
Motor protection
MCB 112 PTC Thermistor Card
Option B
Reference for 10, 12
DO FOR SAFE
STOP T37
Code No.130B1137
Control Terminals of FC302
ATEX Certification with FC 302
The has been certified for ATEX which means that the FC
302 together with the can now be used with motors in
potentially explosive atmospheres. See the Operating
Instructions for the for more information.
ATmosphère EXplosive (ATEX)
Electrical Data
Resistor connection:
PTC compliant with DIN 44081 and DIN 44082
Number 1..6 resistors in series
Shut-off value 3.3Ω.... 3.65Ω ... 3.85Ω
Reset value 1.7Ω .... 1.8Ω ... 1.95Ω
Trigger tolerance ± 6°C
Collective resistance of the sensor loop < 1.65Ω
Terminal voltage ≤ 2.5V for R ≤ 3.65Ω, ≤ 9V for R = ∞
Sensor current ≤ 1mA
Short circuit 20Ω ≤ R ≤ 40Ω
Power consumption 60 mA
Options and Accessories FC 300 Design Guide
244 MG.33.BD.02 - VLT
®
is a registered Danfoss trademark
10
10
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