Versapoint™ I/O System Profibus-Dp Niu User's Manual- August 2005 Gfk-1911B; Connecting Analog Devices; Connecting Field Devices To An Analog Input Module; Connecting A Thermocouple Analog Input Module - GE VersaPoint IC220PBI002 User Manual

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Connecting Analog Devices

Refer to the module datasheets for detailed instructions when connecting analog
sensors and actuators. For maximum noise immunity, always use shielded,
twisted-pair cables.

Connecting Field Devices to an Analog Input Module

For an analog input module:
▪
Within the module, grounding is connected with FE through an RC element
▪
For cable up to 10m (32.8 ft), connect the shield to the Shielded Terminal Strip
as described previously.
▪
For cable longer than 10m (32.8 ft), connect the sensor directly to PE
(protective earth ground) as shown below.
▪
When connecting the shield of the sensor with PE potential, ensure a large
surface connection.
When using analog modules with more than one analog channel, there are
different ways of connecting the shield. This depends on the wire diameter.
1. The preferred method for all wire diameters is to use a Terminal Strip with
dual shield connectors (IC220TBK062).
2. Use a multi-wire cable for the connection of both sensors and connect the
shield as described above to the shield connector (IC220TBK061).
3. Use a thin cable for the connection of each sensor and connect the shields of
both cables together to the shield connector.

Connecting a Thermocouple Analog Input Module

1. Connect the shield to the shield connector.
2. Cut the braided shield off at the sensor or cover it with shrink tubing.
4-22 VersaPoint™ I/O System Profibus-DP NIU User's Manual – August 2005 GFK-1911B