Chromalox 1604-7 user manual Serial Communication Interface, Stop bit one Address, Maintenance

Page 34

Operative mode : High or low programmable.

Threshold : programmable from - 500 to +500 units.

Hysteresis : programmable from 0.1 % to 10.0 % of the input span or 1 LDS.

SERIAL COMMUNICATION INTERFACE

Type: RS-485

Protocol type: MODBUS, JBUS, ERO polling/ selecting.

Baud rate: programmable from 600 to 19200 BAUD.

Byte format: 7 or 8 bit programmable.

Parity: even, odd or none programmable.

Stop bit : one.

Address :

-from 1 to 95 for ERO protocol

-from 1 to 255 for all the other protocols

Output voltage levels: according to EIA standard.

MAINTENANCE

1) REMOVE POWER FROM THE POWER

SUPPLY TERMINALS AND FROM RELAY OUTPUT TERMINALS

2)Remove the instrument from case.

3)Using a vacuum cleaner or a compressed air jet (max. 3 kg/cm2) remove all deposit of dust and dirt which may be present on the louvers and on the internal circuits trying to be careful for not damage the electronic components.

4)To clean external plastic or rubber parts use only a cloth moistened with:

-Ethyl Alcohol (pure or denatured) [C2H5OH] or

-Isopropil Alcohol (pure or denatured)

[(CH3)2CHOH] or

- Water (H2O)

5)Verify that there are no loose terminals.

6)Before re-inserting the instrument in its case, be sure that it is perfectly dry.

7)re-insert the instrument and turn it ON.

31

1604-7-1-AB.p65

31

5/16/00, 10:50 AM

Image 34

Contents Chromalox Contents Model identification IIIMounting Requirements ScrewOutline and CUT OUT Dimensions Outline and CUT-OUT DimensionsConnection Diagrams Measuring Inputs TC InputRTD Input Linear InputRelay Outputs Logic Input Safety noteOUT Linear Output Inductive LoadsLoad Operating Voltage Power Line Wiring Serial InterfaceWhen the Neutral line is present, connect it to terminal Type TC-RTD Preliminary Hardware SettingsInput Open Input CircuitSEr3 = Baude rate for serial link SEr1 = Serial interface protocolOFF SEr4 = Byte format for serial linkP4 = Full scale value P2 = Decimal point positionP3 = Initial scale value P5 = Output 1 functionP8 = analog retransmission full scale value P10 = Alarm 1 operating modeP7 = analog retransmission initial scale value P9 = Output 2 function. nonE = output not usedP14 = Alarm 2 threshold value P12 = Alarm 2 operating modeP15 = Alarm 2 hysteresis value P20 = Secondary control output action P19 = Displayed value of the main power outputP18 = Main control output action P22 = Cooling mediaP28 = Offset adjustment added to the measured value P24 = Alarm 1 actionP26 = Alarm 2 action P29 = Displayable protected parametersP38 = Output safety value P36 = Timeout selectionP34 = Manual function P43 = Set point indication P41 = Control action typeP44 = Operative set point alignment at instrument start up Display Function IndicatorsREM SP2 MAN MAN = SP SP2 SelectionManual Function Direct Access to SET PointLamp Test Smart function Serial LinkHSA1 Alarm 1 hysteresis RSt Manual reset of the alarmsAL1 Alarm 1 threshold AL2 Alarm 2 thresholdRelative Cooling gain Output 3 cycle timeHysteresis for ON/OFF control action Integral timeTOL Time duration of the output power limiter soft start Grd1 Ramp applied to an increasing set point changeOverrange Error MessagesError Messages UnderrangeError List General Informations General SpecificationsInputs Thermocouple Linear Inputs Logic InputControl Actions SET PointsOutputs Alarms OutputSerial Communication Interface MaintenanceStop bit one Address = OFF Appendix a Default ParametersParameter Default Value HSA1, HSA2Para ER0P44 Appendix A.3 Appendix A.4 Chromalox Emerson Electric CO