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Download Multitech MA420 Specifications
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Chapter 3 - AsconControlLib Input OCRB AT_RUN AT_ABORT DBND AUTOUPDATE DTRK TRK DAM AM_VAL DAUX AUX PV_LO PV_HI OUTH_HI OUTC_HI Default Value 0.5 FALSE FALSE 0.0 FALSE FALSE 0.0 FALSE 0.0 FALSE 0.0 0.0 100.0 100.0 100.0 Output Parameters Default Output OUTH OUTC OUTHC OVERLAP TPB TTI TTD TRCGA AT_STS AT_FAIL Default Value 0.0 0.0 0.0 FALSE 0.0 0.0 0.0 0.0 FALSE FALSE Manual Access Parameters The FB provides all the functionalities the operator needs to interact with the loop. The loop is controlled by one PID, connected internally to a Auto Manual block (the Split Range version) which provides auto/manual/track/aux operating mode. These modes, that are unique for both the Cool and the Heat output, are defined by a set of digital inputs, as listed above, ordered according to their priority level. Trk DTRK AutoMan DAM Aux DAUX Depending on these digital inputs, the functionality of the module changes as follows: • If none of these digital signals are active, the FB does not alter the control output signals. The DEADBAND parameter defines how the Cool and the Heat channel interact each other. When it is positive, this parameter defines the dead band width, centered on the value 0 of the output. It means that for each output value included in the dead band both the OUTH and the OUTC output are 0. When it is negative, the opposite occurs; for each value included in the deadband (now named cross band), both the OUTH and the OUTC are different from 0. 97
