Chromalox 1604-7 user manual Output, Alarms

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Output level limiter:

-For one control medium: from 0 to 100 % .

-For two control mediums: from -100 to +100 %. This function may be operative at instrument start up for a programmable time (To avoid thermal shock and/or preheating the plant) otherwise it can be enabled by an external contact.

OUTPUT 1

Type: optoisolated 0-20 mA or 4-20 mA programmable.

Function: programmable as:

-control output (heating or cooling)

-retransm. of the measured value

-retransm. of the operative set point.

Scaling: programmable from -1999 to 9999.

Maximum load: 500 W. Resolution:

-0.1 % when used as control output.

-0.05 % when used as analog retransmission. Digital filter: it is possible to enable a digital filter, on the output retransmission, with the same time constant chosen for the read-out.

Output level indication (as control output only): from 00.0 to 100.0 %.

Output status indication: the indicator OUT 1 flashes with a duty cycle proportional to the output level.

OUTPUT 2

Type: relay SPST contact (NO or NC selectable by jumper).

Contact rated: 2 A at 250 V AC on resistive load.

Function: programmable as:

-control output (heating or cooling)

-Alarm 1 output

Output cycle time (when used as control output) programmable from 1 s to 99 s.

OUTPUT 3

Type: relay with SPST contact with rated current 2 A at 250 V AC on resistive load.

Function: programmable as:

-control output (heating or cooling)

-Alarm 2 output.

Output cycle time (when used as control output) programmable from 1 s to 200 s.

ALARMS

Actions: Direct or reverse acting.

Alarm functions: each alarm can be configured as process alarm, band alarm or deviation alarm. Alarm reset: automatic or manual reset programmable on each alarm.

Stand by (mask) alarm: each alarm can be configured with or without stand by (mask) function.

This function allows to delete false indication at instrument start up and/or after a set point change.

Process alarm:

Operative mode : High or low programmable.

Threshold : programmable in engineering unit within the input span.

Hysteresis: programmable from 0.1 % to 10.0 % of the input span (P4 - P3), or 1 LDS.

Band alarm:

Operative mode: Inside or outside programmable.

Threshold : programmable from 0 to 500 units.

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

Deviation alarm

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Contents Chromalox Contents III Model identificationScrew Mounting RequirementsOutline and CUT-OUT Dimensions Outline and CUT OUT DimensionsMeasuring Inputs TC Input Connection DiagramsLinear Input RTD InputLogic Input Safety note Relay OutputsOUT Inductive Loads Linear OutputLoad Operating Voltage Serial Interface Power Line WiringWhen the Neutral line is present, connect it to terminal Input Preliminary Hardware SettingsType TC-RTD Open Input CircuitOFF SEr1 = Serial interface protocolSEr3 = Baude rate for serial link SEr4 = Byte format for serial linkP3 = Initial scale value P2 = Decimal point positionP4 = Full scale value P5 = Output 1 functionP7 = analog retransmission initial scale value P10 = Alarm 1 operating modeP8 = 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 P18 = Main control output action P19 = Displayed value of the main power outputP20 = Secondary control output action P22 = Cooling mediaP26 = Alarm 2 action P24 = Alarm 1 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 SP SP2 Selection MAN =Direct Access to SET Point Manual FunctionLamp Test Serial Link Smart functionAL1 Alarm 1 threshold RSt Manual reset of the alarmsHSA1 Alarm 1 hysteresis AL2 Alarm 2 thresholdHysteresis for ON/OFF control action Output 3 cycle timeRelative Cooling gain Integral timeGrd1 Ramp applied to an increasing set point change TOL Time duration of the output power limiter soft startError Messages Error MessagesOverrange UnderrangeError List General Specifications General InformationsInputs Thermocouple Logic Input Linear InputsSET Points Control ActionsOutputs Output AlarmsMaintenance Serial Communication InterfaceStop bit one Address Parameter Default Value Appendix a Default Parameters= OFF HSA1, HSA2ER0 ParaP44 Appendix A.3 Appendix A.4 Emerson Electric CO Chromalox
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