Grounding Practices; Compliance Voltage In Single Drop Current Mode - GE SVi 1000 Masonelian Quick Start Manual

Grounding Practices

To ensure proper grounding make sure that case, signal, and ground connections are made in
compliance with the plants normal grounding practices. Any point in the loop can be referenced
to ground, but there must never be more than one ground point. Normally ground is connected
at the controller or at the intrinsic safety barrier.
The case grounding screws are located on the outside of the case. The case is isolated from all
circuitry and can be grounded locally in accordance with applicable codes.

Compliance Voltage in Single Drop Current Mode

®
The SVi1000 requires 9.0 V at 20 mA and 11.0 V at 4 mA. Typical HART devices require MORE
voltage at higher current and MORE current source have LESS voltage available at higher cur-
rent. The SVi1000 is unique in that it requires LESS voltage at higher current which complements
the characteristic of the source requiring only 9 V at 20 mA.
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