Epson 214D-1 user manual Signal Timeout, Flow Alarm

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12 Operation

3.2.2Signal Timeout

The Signal Timeout period defines a time interval which is used to detect if the flow has stopped. If there is no signal input for a time greater than the Signal Timeout period the flow is deemed to have stopped. The Signal Timeout period has two functions:

∙To detect the loss of signal during a batch when the relays are energized. In this case, the Batcher will enter a Flow Alarm condition and de-energize the relays.

∙After the preset batch quantity has been reached and the relays de-energize, some overrun of flow may occur due to slow valve closure, etc. In this case, the Signal Timeout is used to determine when the flow has ceased and thereby accurately determine the amount of overrun.

It is recommended that Signal Timeout periods be kept fairly short, but long enough such that the timeout period is significantly longer than the time period between successive input pulses from the flowmeter at the minimum flowrate.

The instrument enables the user to set a time interval of up to 99 seconds to detect an absence of signal input. If the Signal Timeout is

set to 0, this function is disabled.

Flow Alarm

If a Signal Timeout is set greater than zero and loss of signal is detected during a batch, a Flow Alarm signal is outputted on terminal 7. In addition, both control relays are de-energized. The Flow Alarm output and condition is maintained until acknowledged by pressing the STOP key. The alarm condition is also signaled to the operator by the flashing STOP LED. Once acknowledged, the process can then be reset via the STOP key or continued by pressing the RUN key.

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

The Epson 214D-1 is a powerful and compact printer designed for both personal and professional use, standing out in the crowded market of small-format printers. This sleek device leverages advanced printing technologies to deliver high-quality prints with remarkable efficiency and speed.

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