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(b) Immunity requirements
Standard
EN61000-4-2
Electrostatic discharge
*1
immunity
EN61000-4-3
Radiated, radio-frequency,
electromagnetic field immunity
EN61000-4-4
Fast transient burst immunity
EN61131-2:
EN61000-4-5
2007
Surge immunity
EN61000-4-6
Conducted RF immunity
EN61000-4-8
Power-frequency magnetic field
*1
immunity
EN61000-4-11
Voltage dips and interruption
*1
immunity
*1
The bridge module is an open type device (a device designed to be housed in 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 in a control panel
The bridge module is an open type device and must be installed inside a control panel.
This ensures safety as well as effective shielding of the bridge module-emitted electromagnetic noise.
*1
Modules on the remote station in each network must be also installed inside the control panel. However, the waterproof
type remote station can be installed outside the control panel.
(a) Control panel
• Use a conductive control panel.
• Mask off the area used for grounding when securing the top or bottom plate to the control panel using
bolts.
• To ensure electrical contact between the inner plate and the control panel, mask off the bolt installation
areas of an inner plate 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.
134
Test item
An electrostatic discharge is
applied to the enclosure of the
equipment.
An electric field is radiated to the
product.
*1
Burst noise is applied to power
*1
lines and signal lines.
Lightning surge is applied to power
*1
lines and signal lines.
High-frequency noise is applied to
*1
power lines and signal lines.
The product is immersed in the
magnetic field of an induction coil.
Power voltage is momentarily
interrupted.
Test description
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)
*1
*2
, and
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Troubleshooting
