Epson 214D-1 user manual Input Circuits, Input Circuit for the 214D Series

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36 Input Circuits

6. Input Circuits

This section covers the connection of flowmeter signals for the Model 214D Series Batch Controllers.

The 214D Series has a regulated power supply output which can be used to power sensors. A trimpot on the rear of the instrument allows the voltage to be adjusted in the range of 8-24 Volts and the output can supply a maximum of 50mA.

6.1Input Circuit for the 214D Series

The 214D Series has an input conditioning card which will accept signals from most pulse or frequency producing flowmeters. An 8 position DIP switch on the rear panel enables the input circuit to be configured for different signal types.

The input will interface directly to:

∙Turbine Flowmeters

∙Open Collector Outputs

∙Reed Switches

∙Logic Signals

The following pages give examples of the interconnection to various signal outputs and a circuit diagram of the input is also provided.

HP289

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Contents USER’S Manual HP289 HFC Warranty Contents HP289 Introduction Model Number Designation Model 214D- aIntroduction 2A Introduction 2B This page intentionally left blank HP289 Specification GeneralPulse Output Operation Setting the Batch Quantity Front Panel OperationResetting Starting a BatchStopping Displayed InformationLimit on Batch Size Accumulated TotalBatch Operations Page Control Relays Signal Timeout Flow AlarmEnd-of-Batch Signal End-of-BatchAuto Restart Automatic Overrun Compensation = fxH Calculation of Rate and Total Frequency InputFiltering 103 Total Conversion For ExampleOutput Pulse and Flow Alarm Page Hardware OptionsRS232/422/485 Interface Option Multipoint Communication RS422 Interface HP289RS485 Interface HP289 Communication Protocol PrinterComputer Configuration RUNPage Configuring the Setup Parameters BaseStep Display Description Text Dis Signal Timeout in seconds Setting to Disables this featureEntering the Batch Parameters EOB Configuring the Options DateEcho Checking the Input Signal Input Circuits Input Circuit for the 214D SeriesSwitch Settings General SpecificationInput Circuits Frequency Input Circuit HP289 Page Page Remote Key Switches Installation GeneralRC Networks for Interference Suppression Terminal Wiring Designations Terminal Relay Option & SwitchesTerminalDescription Terminal RS232/422/485 OptionTrouble Shooting Instrument acting erratically No end of batch, pulse output, or flow alarmCounting erratically Error Codes Input ErrorsOutput Errors Configuration ErrorsIndex Front PanelTerminal Wiring

214D-1 specifications

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