Wiring A Relay Contact; Figure 2.13 Grounding Connection; Figure 2.14 Terminal Receptor: Relay Contact - Advantech 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.
Drain Wire with Lug
By connecting the ground terminal by drain wire to earth ground the switch and
chassis can be ground.
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.
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.
The terminal receptor includes a total of six pins: two for PWR1, two for PWR2 and
two for a fault circuit.

Figure 2.13 Grounding Connection

P-Fail

Figure 2.14 Terminal Receptor: Relay Contact

19
Console DI / DO
Connection to
Grounding Point
EKI-7428 Series User Manual