Mitsubishi Electric MELSEC L Series User Manual page 140

(b) Immunity requirements
Standard
EN61131-2: 2007
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(2) Installation in a control panel
Programmable controller is an open-type device intended to be placed in a conductive control panel or similar
type of enclosure.
This ensures safety as well as effective shielding of electromagnetic noise emitted from the programmable
controller.
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(a) Control panel
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Test item
EN61000-4-2
Electrostatic discharge
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immunity
EN61000-4-3
Radiated, radio-frequency,
electromagnetic field immunity
EN61000-4-4
Fast transient burst immunity
EN61000-4-5
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Surge immunity
EN61000-4-6
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Conducted RF immunity
EN61000-4-8
Power-frequency magnetic field
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immunity
EN61000-4-11
Voltage dips and interruption
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immunity
Programmable controller is an open-type device intended to be placed in a conductive control panel or similar type of
enclosure. The tests were conducted with the programmable controller installed in a control panel.
The accuracy of an analog-digital converter module may temporarily vary within 10%.
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Remote modules on each network must be also installed inside the control panel. Waterproof type remote modules can
be installed outside the control panel.
• Use a conductive control panel.
• Mask off an area used for grounding in advance.
• To ensure electrical contact between inner plates and the control panel, mask off the bolt installation areas
of each inner plate so that conductivity can be ensured in the largest area.
• Ground the control panel with a thick ground cable so that low impedance can be ensured even at high
frequencies.
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Test description
An electrostatic discharge is
applied to the enclosure of
the equipment.
An electric field is radiated
to the product.
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Burst noise is applied to
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power lines and signal lines.
Lightning surge is applied to
power lines and signal lines.
High-frequency noise is
applied to power lines and
signal lines.
The product is immersed in
the magnetic field of an
induction coil.
Power voltage is
momentarily interrupted.
Value specified in standard
• 8kV: Air discharge
• 4kV: Contact discharge
80% AM modulation @1kHz
• 80 to 1000MHz: 10Vm
• 1.4 to 2.0GHz: 3Vm
• 2.0 to 2.7GHz: 1Vm
• AC/DC power, I/O power, and AC I/O
(unshielded) lines: 2kV
• DC I/O, analog, and communication lines: 1kV
• AC power, AC I/O power, and AC I/O
(unshielded) lines: 2kV CM, 1kV DM
• DC power and DC I/O power lines: 0.5kV CM,
0.5kV DM
• DC I/O, AC I/O (shielded), analog
communication lines: 1kV CM
0.15 to 80MHz,
80% AM modulation @1kHz, 10Vrms
50/60Hz, 30A/m
• 0%, 0.5 period, starting at zerocrossing
• 0%, 250/300 period (50/60Hz)
• 40%, 10/12 period (50/60Hz)
• 70%, 25/30 period (50/60Hz)
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