APPX
Appendix 4 EMC and Low Voltage Directives
247
A
■Immunity requirements
*1 The module is an open type device (a device designed to be housed in other equipment) and must be installed inside a conductive
control panel. Except for the waterproof I/O module, the tests are conducted with the module installed in a control panel. (The I/O
module (waterproof module) is tested outside the control panel.)
*2 The accuracy of an analog-digital converter module may temporarily vary within 10%.
Installation in a control panel
The module is 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.
■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 in diameter, radio waves may
leak. 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 control panel having the damping characteristics of 37dB (max.) and 30dB (mean)
(measured by 3m method, 30 to 300MHz).
■Wiring of power cables and ground cables
Near the power supply part, provide a ground point to the control panel. Ground the FG terminal with the thickest and shortest
possible ground cable (30cm or shorter).
Specifications Test item Test details Standard value
EN61131-2: 2007 EN61000-4-2
Electrostatic discharge
immunity
*1
Static electricity is applied to the
cabinet of the equipment.
• 8kV Air discharge
• 4kV Contact discharge
EN61000-4-3
Radiated, radio-
frequency,
electromagnetic field
immunity
*1
Electric fields are radiated to the
product.
80% AM modulation@1kHz
• 80M-1000MHz: 10V/m
• 1.4G-2.0GHz: 3V/m
• 2.0G-2.7GHz: 1V/m
EN61000-4-4
Electrical fast transient/
burst immunity
*1
Burst noise is applied to the power
line and signal line.
• AC/DC main power, I/O power, AC I/O (unshielded): 2kV
• DC I/O, analog, communication: 1kV
EN61000-4-5
Surge immunity
*1
A lightning surge is applied to the
power line and signal line.
• 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
*2
, communication: 1kV CM
EN61000-4-6
Conducted RF
immunity
*1
High frequency noise is applied to
the power line and signal line.
0.15M-80MHz,
80% AM modulation @1kHz, 10Vrms
EN61000-4-8
Power-frequency
magnetic field immunity
*1
The product is installed in an
inductive magnetic field.
50Hz/60Hz, 30A/m
EN61000-4-11
Voltage dips and
interruption immunity
*1
A momentary power failure is
caused to the power supply voltage.
• 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)
To Next Page
Loading...
