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Power supply, grounding and shielding
The following table shows, which plug-in module and how many plug-in modules can be used
at which HMI:
Module
Application
Max Modules
Interface
Type
Bus
Extension
connector
TX-CAN
CAN
– 1 for TX5xxE
– 2 for TX5xx
CAN
Y
TX-IO-XX03
Multifunction I/O
– 1
(for TX504E: only in combination
with TX-CAN)
I/O
N
TX-IO-DX06
Compact I/O
– 1 for TX504E
– 2 for TX5xx(E)
I/O
N
Max modules refers to max number of modules can be plugged into the HMI (all slots),
If you are planning to use two
TX-CAN
(CAN interface) you will obtain following slot#
association:
■
a module plugged into slot#1 or into slot#2 has to be configured in CODESYS as network 0,
■
a module plugged into slot#3 or into slot#4 has to be configured in CODESYS as network 1.
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Power supply, grounding and shielding
The power supply terminal block is shown in the figure below.
NOTE
Ensure that the power supply has enough power capacity for the operation of the
equipment.
The unit must always be grounded to earth. Grounding helps to limit the effects of noise due to
electromagnetic interference on the control system.
The earth connection will have to be done using the grounding screw located near the power
supply terminal block. The screw for the ground connection is marked with an engraved
ground symbol. Also connect terminal 3 on the power supply terminal block to ground.
The power supply circuit may be floating or grounded. In the latter case, connect to ground the
power source common as shown in figure (see below) with a dashed line.
When using the floating power scheme, note that the device internally connects the power
common to ground with a 1 MΩ resistor in parallel with a 4,7 nF capacitor.
The power supply must have double or reinforced insulation.
The suggested wiring for the power supply is shown below.
