Hach sc100 1720E Instrument Manual

Contents

Hach sc100 1720E Instrument Manual Manual pdf 32 page image

32Operation4.5 Output Options The controller provides two isolated analog outputs (Output 1 and Output 2).Customize the outputs using the table in section 4.5.1 on page 32.5 Change the existing passcode6 Main Menu or Main Measurement Screen —Step Select Menu Level/Instructions Confirm4.5.1 Output Setup Menu (from System Setup)1. Select OUTPUT 1 or 2SELECT SOURCEPress ENTER to access a list of all connected sensors. Choose the sensor to associate with the output.SET PARAMETERHighlight the appropriate displayed parameter and press ENTER.SET FUNCTIONSelect LINEAR CONTROL for current output to track the measurement value. Select PID CONTROL for the sc100 to operate asa PID controller.SET TRANSFEREach analog output is normally active, responding to the measured value of its assigned parameter. However, during calibration,each output can be transferred to this preset transfer value. Default: 4mA; Range: 0–20SET FILTERAllows the user to average the analog outputs over time Default: 0; Range: 0–120 secondsSCALE 0 mA/4 mASelect 0 mA or 4 mA for minimum current (outputs will be set to 0–20 mA or 4–20 mA).ACTIVATIONFUNCTION set to LINEAR CONTROLIf LINEAR CONTROL was selected in SET FUNCTION, set the low and the high values for the current output here.Defaults: Low = 0; High = 100; Low Value Range: 0–100, High Value Range: 0–100.FUNCTION set to PID CONTROLIf PID CONTROL was selected in SET FUNCTION, configure the PID Control as follows:1. Set MODE: AUTO or MANUAL. Manual output default: 100%2. Set PHASE: DIRECT or REVERSE controller operation.3. SET SETPOINT: enter the set point the PID control will control the process to. Default: 100; Range: 0–1004. PROP BAND: control the proportional band for the PID control. Default: 5.00; Range: 0–10005. INTEGRAL: control the integral action time period in minutes. Range: 0–9996. DERIVATIVE: control the settings for the rate control. Range: 0–999