ABB-07AC91-Analog Input/Output Module

ABB-07AC91-Analog Input/Output Module

Intended purpose The analog input/output module 07 AC 91 is used as a remote module on the CS31 system bus. It contains 16 analog input/output channels that can be configured in two operating modes: • Operating mode "12 bits": 8 input channels, individually configurable ±10 V or 0...20 mA, 12 bit resolution plus 8 output channels, individually configurable ±10 V or 0...20 mA, 12 bit resolution • Operating mode "8 bits": 16 channels, configurable in pairs as inputs or outputs, 0...10 V oder 0...20 mA, 8 bit resolution • The configuration is set with DIL switches. • The PLC offers an interconnection element ANAI4_20 for measuring signals of 4...20 mA (refer to 907 PC 331. connection element library). The module 07 AC 91 uses up to eight input words on the CS31 system bus plus up to eight output words. In the operating mode "8 bits", 2 analog values are packed into one word. The operating voltage of the unit is 24 V DC. The CS31 system bus connection is electrically isolated from the rest of the module. The module offers a number of diagnosis functions (see chapter "Diagnosis and displays"). Displays and operating elements on the front panel 1 8 green LEDs for channel selection and diagnosis 2 8 green LEDs for analog value display of a channel 3 List of diagnosis information relating to the LEDs, when they are used for diagnosis display 4 Red LED for error messages 5 Test button Electrical connection The module can be installed on a DIN rail (15 mm high) or with 4 screws. The figure on the next page shows the electrical connection for the input/output module.

8 analog inputs (terminals 4 to 19) and 8 analog outputs (terminals 27 to 42), configurable for ±10 V or 0...20 mA, resolution 12 bits Operating mode "8 bits": 16 analog channels configurable in pairs as inputs or outputs for 0...10 V or 0...20 mA, resolution 8 bitsThe connections of all analog value sensors and receivers must be electrically isolated from their installation environment. The cable shields of the analog wiring must be connected to cabinet ground where they enter the cabinet. Setting of the module address and configuration of the analog channels is done with the DIL switches (see next page)

Configuration of analog channels and settings of the module address on the CS31 bus The 16 analog channels can be configured in two operating modes with DIL switches (located under the slide cover on the right side of the module housing (see following figure): Operating mode "12 bits": 8 analog inputs (terminals 4 to 19) plus 8 analog outputs (term. 27 to 42), configurable for ±10 V or 0...20 mA, solution 12 bits Operating mode "8 bits": 16 analog channels configurable in pairs as inputs or outputs for 0...10 V or 0...20 mA, solution 8 bits