Danfoss VLT AutomationDrive FC 300 Series - Page 172

Illustration 9.25 ATmosphère EXplosive (ATEX)
Electrical Data
Resistor connection
PTC compliant with DIN 44081 and DIN 44082
Number 1..6 resistors in series
Shut-off value 3.3 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 ... 1000 Hz 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
Ordering number 130B1137
Options and Accessories
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®
AutomationDrive FC 300 Design Guide, 0.25-75 kW
170 MG33BE02 - VLT
®
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