Siemens SIWAREX MS Device Manual page 71

Technical Data
Spurious emission (residential and industrial areas):
Comments
Burst pulses on data and
signal lines:
Electrostatic discharge (ESD)
Electrostatic air discharge
(ESD)
Surge voltage / Surge on
3
power supply lines
Surge on data and signal
lines:
HF irradiation
(electromagnetic fields)
Cable fed interferences
Data, signal and power supply
lines
Damped vibration
on power supply line
Voltage interruptions
the power supply
Table 11-11 Data: Electromagnetic Compatibility
1
The module must be mounted on a grounded metal frame. The S7-200 must be grounded directly over
the metal frame. With the exception of the 24 V power supply line, shielded cable must be used for all
lines. The cable shielding must be grounded on both ends at low resistance.
2
The S7-200 must be installed in a closed metal housing. For all cables, shielded cable must be used. The
cable shielding must be grounded on both ends at low resistance.
3
To meet requirements, an external protection element should be used (e.g.: Blitzductor VT
AD24V, by Dehn&Söhne)
SIWAREX MS 11-63
Standard
IEC 61000-4-4
IEC 61000-4-2
IEC 61000-4-2
IEC 61000-4-5
IEC 61000-4-5
IEC 61000-4-3
IEC 61000-4-6
EN 61000-4-12
EN 61000-4-29
Limit values
1 kV (RS232 interface)
2 kV (remaining data and
signal lines)
6 kV
8 kV
+ 2 kV asymmetrical
+ 1 kV symmetrical
+ 1 kV asym.
(to cable shielding)
26 MHz to 1000 MHz and 1.4 to
2.0 GHz 10 V/m (80% AM with
1 kHz)
900 MHz and 1.89 GHz
Up to 10 V/m (50% PM)
0.15 kHz – 80 MHz
10 Veff (80% AM 1 kHz)
1 MHz
1.0 kV symmetrical
1.0 kV asymmetric
Refresh rate: 1 sec.
Duration 10 min.
Interruption time:
0...20 ms
Refresh rate:
1 s
(Load cell impedance ≥ 85 Ohm)