Advantech EKI-7428 Series, User Manual

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19 EKI-7428 Series User Manual
Electromagnetic Interference (EMI) affects the transmission performance of a device.
By properly grounding the device to earth ground through a drain wire, you can setup
the best possible noise immunity and emissions.
Figure 2.13 Grounding Connection
By connecting the ground terminal by drain wire to earth ground the switch and
chassis can be ground.
2.9.4 Wiring a Relay Contact
The following section details the wiring of the relay output. The terminal block on the
EKI-7428 Series is wired and then installed onto the terminal receptor located on the
EKI-7428 Series.
Figure 2.14 Terminal Receptor: Relay Contact
The terminal receptor includes a total of six pins: two for PWR1, two for PWR2 and
two for a fault circuit.
Note! Before applying power to the grounded switch, it is advisable to use a
volt meter to ensure there is no voltage difference between the power
supply’s negative output terminal and the grounding point on the switch.
Console DI / DO
Drain Wire with Lug
Connection to
Grounding Point
P-Fail