ABB 07AI91 analog Input module 16AI

The Shield connections of the CS31 bus and FE of the supply voltage have no connection

within the device.

The process voltage must be included in the grounding concept of the control system (e.g.

grounding of the negative pole).

The connections of all sensors must be galvanically isolated from the mounting environment

of the sensors. The cable shields of the temperature sensors are grounded to the control

cabinet at the entry into the cabinet. The setting of the module address as well as the

configuration of the analog channels are performed by means of DIP switches (see next

pages).

Unused inputs must be configured as "not evaluated" (DIP switch).

The current sources in AI523 are configurable and therefore not always active. The current

sources are connected alternately with the multiplex method. Consequently, the device does

not have 8 current sources.

The module address and the analog channels are set with DIP switches.