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Wiring Section 3-2
IMPORTANT
• Properly apply the specified voltage to the NE1A-series Controller’s
inputs. Applying an inappropriate DC voltage or any AC voltage may
cause reduced safety functions, damage to the NE1A-series Controller, or
a fire.
• Be sure to separate I/O cables from high-voltage/current lines.
• Use a total I/O communications cable length of 30 m or less.
• Do not apply the power supply to the test output terminals. Doing so may
result in product damage or burning.
Wiring Output Devices
Refer to the following diagram for selection and wiring of output devices.
Controlling devices Requirements
Emergency stop switch Use approved devices with a direct opening mechanism compliant with IEC/
EN 60947-5-1.
Door interlocking switch or
limit switch
Use approved devices with a direct opening mechanism compliant with IEC/
EN 60947-5-1 and capable of switching micro-loads of 4 mA at 24 VDC.
Safety sensor Use approved devices compliant with the relevant product standards, regula-
tions, and rules in the country where they are used.
Relay with forcibly guided contacts Use approved devices with forcibly guided contacts compliant with EN 50205.
For feedback, use devices with contacts capable of switching
micro-loads of 4 mA at 24 VDC.
Contactor Use contactors with a forcibly guided mechanism and monitor the auxiliary NC
contact to detect contactor failures.
For feedback, use devices with contacts capable of switching micro-loads of
4 mA at 24 VDC.
Other devices Evaluate whether devices used are appropriate to satisfy the requirements of
the safety category level.
OUTx
G2
V2
24 VDC
L
NE1A-series
Controller
0.5 A max.
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