Baer DLX User Manual page 104

RS485 interface (2 or 4 wires; optional)
Standard ................................................. ANSI/TIA/EIA-485-A-98
Voltage ................................................... 0VDC / 5VDC
Number of partner .................................. max. 32
Cable length ........................................... max 1,2km
Baud rate ................................................ 300 to 9600 baud
Termination(120 ) ................................. none
Protection against voltage and other disturbances
Protective measures according to VDE 0701:
Protective earth impedance .......... ≤ 300m Ω
Insulation measurements .............. protective class II, ≥ 2M Ω
Earth leakage current ................... with protection capacitor ≤ 7mA
Insulation strength according to DIN 43863
Electro static discharge according to EN 61000-4-2:
Discharge with contact .................. 4kV
Discharge through air ................... 8kV
Electromagnetic HF protection according to EN 61000-4-3 and ENV 50204:
Frequency range .......................... 80MHz to 1000MHz
Severity level ................................ 3
Test field strength ......................... 10V/m
Fast transient protection according to EN 61000-4-4:
Power supply ................................ 2kV
Inputs & outputs ............................ 2kV
Serial interfaces & modem ............ 2kV
Voltage peaks according to EN 61000-4-5:
Live to Neutral .............................. 2kV
Live and Neutral to PE ................. 4kV
Asymmetric high frequency, modulated amplitudes according to EN 61000-4-6:
Severity level ................................ 3
Inject currents ............................... 0,15MHz to 80MHz; 80 % AM, 1kHz
Magnetic field with energy frequency according to EN 61000-4-8:
Severity level ................................ 4
Magnetic field strength .................. 30A/m
Supply outages, dips and variations according to EN 61000-4-11
Modulation of supply current according to EN 61000-3-2:
Threshold value ............................ acc. to class A
Voltage range according to EN 61000-3-3
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