Mitsubishi Electric MELSEC-L SSCNETIII/H User Manual page 127

(b) Regulations regarding immunity
Specification
EN61000-4-2 Electrostatic discharge
immunity
EN61000-4-3 Radiated, radio-
frequency, electromagnetic field
immunity
EN61000-4-4 Electrical fast
transient/burst immunity
EN61131-2: 2007 EN61000-4-5 Surge immunity
EN61000-4-6 Immunity to conducted
disturbances, induced by radio-
frequency fields
EN61000-4-8 Power-frequency
magnetic field immunity
EN61000-4-11 Voltage dips and
interruption immunity
*1 Programmable controllers are open-type devices (devices designed to be housed inside other equipment) and must be
installed inside a conductive control panel. The tests were conducted with the programmable controller installed in a
control panel.
The accuracy of an analog-digital converter module may temporary vary within 10%.
*2
(2) Installation inside a control panel
The programmable controllers are open type devices and must be installed inside a control panel.
This ensures safety as well as effective shielding of programmable controller-generated electromagnetic noise.
(a) Control panel
• Use a conductive control panel.
• When securing the top or bottom plate using bolts, cover the grounding part on the control panel so that the
part will not be painted.
• To ensure electrical contact between the inner plate and control panel, take measures such as covering the
bolts so that conductivity can be ensured in the largest possible area.
• Ground the control panel with a thick ground cable so that low impedance can be ensured even at high
frequencies.
• Holes in the control panel must be 10cm diameter or less. If the holes are larger than 10cm, radio wave may
be emitted. In addition, because radio waves leak through a clearance between the control panel and its
door, reduce the clearance as much as possible. The leakage of radio waves can be suppressed by the
direct application of an EMI gasket on the paint surface.
Our tests have been carried out on a panel having the attenuation characteristics of 37dB (max.) and 30dB
(mean) (measured by 3m method, 30 to 300MHz).
Test item
Immunity test in which
electrostatic is applied to the
*1
cabinet of the equipment
Immunity test in which electric
fields are irradiated to the
*1
product
Immunity test in which burst
noise is applied to the power
*1
line and signal line
Immunity test in which lightning
*1 surge is applied to the power
line and signal line
Immunity test in which high
frequency noise is applied to the
*1
power line and signal line
Immunity test in which the
product is installed in inductive
*1
magnetic field
Immunity test in which power
supply voltage is momentarily
*1
interrupted
Test details
• 8kV Air discharge
• 4kV Contact discharge
80% AM modulation@1kHz
• 80M-1000MHz: 10V/m
• 1.4G-2.0GHz: 3V/m
• 2.0G-2.7GHz: 1V/m
• AC/DC main power, I/O power, AC I/O (unshielded):
2kV
• DC I/O, analog, communication: 1kV
• AC power line, AC I/O power, AC I/O (unshielded):
2kV CM, 1kV DM
• DC power line, DC I/O power: 0.5kV CM, DM
• DC I/O, AC I/O (shielded), analog
1kV CM
0.15M-80MHz,
80% AM modulation @1kHz, 10Vrms
50Hz/60Hz, 30A/m
• Apply at 0%, 0.5 cycles and zero-cross point
• 0%, 250/300 cycles (50/60Hz)
• 40%, 10/12 cycles (50/60Hz)
• 70%, 25/30 cycles (50/60Hz)
APPENDICES
Standard value
*2
, communication:
125
A