ABB SPASI23 Analog Input Module

Overview

The SPASI23 Analog Input Module is a Harmony rack I/O module that is

 

part of the Symphony™ Enterprise Management and Control System. It

 

has 16 analog input channels that interface isolated thermocouple, millivolt,

 

RTD, and high level analog signals to a controller with an analog-to-digital

 

conversion resolution of 24 bits. Each channel has its own analog-to-digital

 

converter and can be independently configured to handle the desired input

 

type. These analog inputs are used by a controller to monitor and control a

 

process.

The SPASI23 module can be used as a direct replacement for the SPASI03 or SPASI13 modules with only minor modifications. Changes to specification S11 in function code 216 are required to handle the differences in resolution choices. Verification of power supply sizing calculations and system current requirements could be necessary because of the change in power consumption.

Features

The design of the SPASI23 module allows for flexibility in creating a process management system.

• The SPASI23 module conditions (filters, converts, and isolates) up to 16 analog input signals.

• The SPASI23 module converts analog signals to digital values, adds compensation and corrections as needed, and provides digital values to the controller through the I/O expander bus.

• Each channel is individually programmable for the following input types: B, E, J, K, L, N (14 AWG), N (28 AWG), R, S, T, U thermocouples. Chinese type E and Chinese type S thermocouples. -100 to +100 millivolt. Three-wire RTD (10, 100 U.S., 100 European, 120 and Chinese 53 ohm). -10 to +10 VDC high level voltage. 4 to 20 milliampere current.

• Resolution of the analog-to-digital conversion process is 24 bits. 

• Input type and channel resolution can be selected independently for each channel, permitting any mix of inputs on a single ASI23 module. 

• Channel isolation and open input detection are provided for each channel.

• Input circuit offset, gain, and nonlinearity errors are recorded during a one time factory calibration procedure.These measurements provide error compensation during normal operation. The analog input module does automatic recalibration during normal operation to compensate for component aging and temperature drift. No user calibration is ever required.

• Engineering units conversion to degrees C or F is automatically calculated on all input signals that are thermocouple or RTD types. These conversions correct for nonlinearities in the conversion to temperature units using industry standard linearization tables.

• The analog input module scales the block output value to engineering units for low and high level voltage inputs. Input type, and zero and span values are specified in FC 216.

• Thermocouple inputs have cold junction compensation. Each termination device has a built-in cold junction reference. The cold junction reference applied to thermocouple inputs can be this built-in reference or it can be a remote reference read from another input from this or another I/O module. 

• The ASI23 module can be removed or installed without turning off power to the system.

Technical Specifications

Warranty :    We offer one year warranty for all original new product.

Delivery   :     We will choose the DHL/FEDEX/TNT/UPS.   

Payment   :    100% advance payment bank wire transfer.

Returns   :    Quality problems can be replaced within 15 working days from the date of receipt of the product,  repair services can be provided within 1 year.

Please contact us to get the product manual.

  One year warranty on sold items

   Available for dispatch immediately

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Questions? Call +86 18050017653  or Email sales4@nseauto.com