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EKI-1242 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 set
up the best possible noise immunity and emissions.
Figure 2.15 Grounding Connection
By connecting the ground terminal by drain wire to earth ground the fieldbus gateway
and chassis can be ground.
2.7.4
Wiring a Relay Contact
The following section details the wiring of the relay output. The terminal block on the
EKI-1242 Series is wired and then installed onto the terminal receptor located on the
EKI-1242 Series.
Figure 2.16 Terminal Receptor: Relay Contact
Figure 2.17 Terminal Receptor: Relay Contact (EKI-1242BNMS/EKI-1242IBNMS)
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 fieldbus gateway, 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
fieldbus gateway.
PWR2
P-Fail
DC12-48V
PWR1
V2- V2+
V1- V1+
1A@24V
Drain Wire with Lug
Connection to
Grounding Point
PWR2
P-Fail
DC12-48V
PWR1
V2- V2+
V1- V1+
1A@24V
PWR2
P-Fail
PWR1
1A@24V
N2 L2
N1 L1
AC 24V
