Specifications

ATEX Certification
The MCB 112 has been certified for ATEX, which means
that the frequency converter together with the MCB 112
can be used with motors in potentially explosive
atmospheres. See the MCB 112 Operating Instructions for
more information.
ATmosphère EXplosive (ATEX)
Table 3.8 ATEX Logo
Electrical Data
Resistor connection
PTC compliant with DIN 44081 and DIN 44082
Number 1..6 resistors in series
Shut-off value 3.3 Ω.... 3.65 Ω ... 3.85 Ω
Reset value 1.7 Ω .... 1.8 Ω ... 1.95 Ω
Trigger tolerance ± 6 °C
Collective resistance of the sensor loop < 1.65 Ω
Terminal voltage ≤ 2.5 V for R ≤ 3.65 Ω, ≤ 9 V for R = ∞
Sensor current ≤ 1 mA
Short circuit 20 Ω ≤ R ≤ 40 Ω
Power consumption 60 mA
Testing conditions
EN 60 947-8
Measurement voltage surge resistance 6000 V
Overvoltage category III
Pollution degree 2
Measurement isolation voltage Vbis 690 V
Reliable galvanic isolation until Vi 500 V
Perm. ambient temperature -20 °C ... +60 °C
EN 60068-2-1 Dry heat
Moisture 5 --- 95%, no condensation permissible
EMC resistance EN61000-6-2
EMC emissions EN61000-6-4
Vibration resistance 10 ... 1000Hz 1.14 g
Shock resistance 50 g
Safety system values
EN 61508 for Tu = 75°C ongoing
SIL 2 for maintenance cycle of 2 years
1 for maintenance cycle of 3 years
HFT 0
PFD (for yearly functional test) 4.10 *10
-3
SFF 78%
λ
s
+ λ
DD
8494 FIT
λ
DU
934 FIT
Selection VLT® HVAC Drive FC 102 Design Guide
MG16C102 - Rev. 2013-08-20 55
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