Honeywell EXCEL 5000 User Manual

Also see for Excel 5000 System Series: Installation and commissioning instructions Installation instructions Installation instructions Product data

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Honeywell EXCEL 5000 User Manual Manual pdf 29 page image

EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE31 74-5577–33 (US)EN2B-0184 GE51 R0518 (Europe)Cascade Plus / CASFunction Cascade controller that acts as a PI controller with a master and cascade controller.Cascade Differences This cascade controller (CAS Plus) acts just like the previous cascade controllerexcept that it has an integral action enable/disable input. This new function requiresan additional digital input (XD) and two new parameter registers for temporarystorage.This additional input enables CAS Plus to act as a P controller during plant start-upand then switch on an Integral component after start-up is complete.I/O Dialog BoxExcel Web / Excel Web IIInputs Three analog inputs, where:X = Master-controlled variable.XH = Cascade- or auxiliary-controlled variable.W = Reference variable, also known as setpointYou can enter the reference variable as a parameter (engineering unit index numberand value). Not for Excel Web / Excel Web II !One digital input (XD, Excel Web / Excel Web II Icon) that enables and disablesintegral control action. When XD is zero, integral action in the master and cascadecontrollers is disabled and the associated integral sum is reset. XD/Ion must alwaysbe connected.Outputs One analog output (Y).