VIO10-P
PROFIBUS-PA REMOTE I/O
INSTALLATION, OPERATION, CONFIGURATION AND MAINTENANCE MANUAL
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10
2.2.
ELECTRICAL CONNECTION
The electrical connection for VIO10-P occurs through its side connectors, reserved for discrete inputs
and outputs, sensors, analog outputs and electrical powering of the equipment.
The following figure identifies VIO10-P connectors.
* When using 24 Vdc external power for digital
outputs (DO1 to DO8), connect the source
negative to terminal 9.
If the same source is connected to terminals 27
and 28, it will not be necessary to connect
terminal 9, since this connection is already made
internally in the VIO10 circuit.
Figure 2.2 – Connection and terminal description for VIO10-P.
Table 2.1 – Terminal description for VIO10-P.
NOTE
All cables used to connect VIO10-P to Profibus-PA sensors and network must be shielded to avoid
interference and noise.
All temperature sensors shall be isolated from the process to avoid interference or noise between the
channels.
Terminal Description
Power Supply Terminals – PWR BUS – 9 - 32 Vdc not polarized
Grounding Terminals – G
Shield Terminals – S
Discrtete Input Terminals – DI1 to DI16
Discrete Output Terminals – DO1 to DO8
Output Current 4–20 mA Terminals – OUT1 and OUT2
Sensor Terminals – temperature sensor or 4-20 mA/0-5 Vdc signal connections, CH1 to CH3
NOTE
It is extremely important to ground the equipment for complete eletromagnetic protection and also to
ensure the correct performance of transmitter on Profibus-PA network.
NOTE: SWITCHING INDUCTIVE LOAD
For inductive DC load, it is recommended to insert a 1N4148 diode in reverse mode for close-load protection
to avoid noise coupling to other cables in the same conduit.
