Features

– 8 channels for 0… .20 mA, 4… .20 mA d.c., single-ended unipolar inputs.

– 1 group of 8 channels isolated from ground.

– 12-bit resolution.

– Input shunt resistors protected to 30 V with PTC resistors.

– Analogue inputs are short-circuit protected to ZP or +24 V.

– Inputs can withstand HART communications.

– Process and Power

Process and power connections are made via removable connectors.

Process and power supply are connected via removable connectors.

The AI801 analogue input module has 8 current input channels.

The current inputs can withstand a short circuit of the transmitter power supply with a minimum of 30 VDC without damage.

Current limiting is achieved by means of PTC resistors. The input resistance of the current inputs is 250 ohms, including the PTC resistors.

The module distributes external transmitter power to each dcs-sis.com channel. This adds a simple connection for power distribution to the two-wire transmitter.

There is no current limiting on the transmitter power terminals. All eight channels are isolated as a group from the module bus. Power to the input stage is converted from an external 24 V voltage.