Chromalox 1604-7 user manual Smart function, Serial Link

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SERIAL LINK

The device can be connected to a host computer by a serial link.

The host can put the device in LOCAL (functions and parameters are controlled via keyboard) or in REMOTE (functions and parameters are controlled via serial link).

The REMOTE status is signalled by the decimal point (labelled REM) at the right hand of the LSD of the upper display.

This instrument allows to modify the operative and configuration parameters, via serial link. The necessary conditions to implement this function are the following:

1)Serial parameters from SEr1 to SEr4 should be properly configured using the standard front keyboard procedure

2)Device must be in the OPERATING mode

During the downloading of configuration the device goes in open loop with all output in OFF state.

At the end of configuration procedure, the device performs an automatic reset and then returns to close loop control.

SMART function

It is used to optimize automatically the control action.

To enable the SMART function, push the FUNC pushbutton until "Snrt" parameter is shown. Pushing s or t set the display "On" and push the FUNC pushbutton.

The SMRT LED will turn on or flashing according to the algorithm selected.

When the smart function is enabled, it is possible to display but not to modify the control parameters.

To disable the SMART function, push the FUNC pushbutton again until "Snrt" parameter is shown. Pushing s or t set the display "OFF" and push the FUNC pushbutton.

The SMRT LED will turn off.

The instrument maintains the actual set of control parameters and it enables parameter modifica- tion.

NOTES : 1) When ON/OFF control is pro- grammed (Pb=0), the SMART function is disabled.

2)The SMART enabling/disabling can be protected by safety key (see P30).

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Contents Chromalox Contents Model identification IIIMounting Requirements ScrewOutline and CUT OUT Dimensions Outline and CUT-OUT DimensionsConnection Diagrams Measuring Inputs TC InputRTD Input Linear InputLogic Input Safety note Relay OutputsOUT Inductive Loads Linear OutputLoad Operating Voltage Power Line Wiring Serial InterfaceWhen the Neutral line is present, connect it to terminal Preliminary Hardware Settings InputType TC-RTD Open Input CircuitSEr1 = Serial interface protocol OFFSEr3 = Baude rate for serial link SEr4 = Byte format for serial linkP2 = Decimal point position P3 = Initial scale valueP4 = Full scale value P5 = Output 1 functionP10 = Alarm 1 operating mode P7 = analog retransmission initial scale valueP8 = analog retransmission full scale value P9 = Output 2 function. nonE = output not usedP12 = Alarm 2 operating mode P14 = Alarm 2 threshold valueP15 = Alarm 2 hysteresis value P19 = Displayed value of the main power output P18 = Main control output actionP20 = Secondary control output action P22 = Cooling mediaP24 = Alarm 1 action P26 = Alarm 2 actionP28 = Offset adjustment added to the measured value P29 = Displayable protected parametersP36 = Timeout selection P38 = Output safety valueP34 = Manual function P41 = Control action type P43 = Set point indicationP44 = Operative set point alignment at instrument start up Indicators Display FunctionREM SP2 MAN MAN = SP SP2 SelectionDirect Access to SET Point Manual FunctionLamp Test Smart function Serial LinkRSt Manual reset of the alarms AL1 Alarm 1 thresholdHSA1 Alarm 1 hysteresis AL2 Alarm 2 thresholdOutput 3 cycle time Hysteresis for ON/OFF control actionRelative Cooling gain Integral timeTOL Time duration of the output power limiter soft start Grd1 Ramp applied to an increasing set point changeError Messages Error MessagesOverrange UnderrangeError List General Specifications General InformationsInputs Thermocouple Linear Inputs Logic InputSET Points Control ActionsOutputs Alarms OutputMaintenance Serial Communication InterfaceStop bit one Address Appendix a Default Parameters Parameter Default Value= OFF HSA1, HSA2Para ER0P44 Appendix A.3 Appendix A.4 Chromalox Emerson Electric CO