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Chapter 1. INTRODUCTION
• Flowrate integration function
The fowrate can be integrated up to eight digits (99,999,999 count).
(The display is switched in four digits at a time.)
MPC9500: 0.01 L in unit
MPC0002/0005: 0.1 L in unit
MPC0020: 1 L in unit
The count can be reset by key operation or external switching input.
Integration start/stop/reset can be remote-controlled by external switching input.
After a reset by key operation, the integration calculation is started automatically.
However, if a reset (contact ON) is carried out by external switching input,
integration is resumed by the contact turning OFF.
• Valve drive output display
The valve drive output value can be displayed in the unit of 0.0 to 100.0 %.
The increase or decrease of supply pressure and the choking of piping can be
detected.
• Alarm display/output/shut-off
The flowrate deviation alarm can be output by detecting the deviation between
setting flowrate and control flowrate. The alarm judgment delay time can also
be set. When a flowrate alarm occurs or an alarm occurs during controller self-
diagnostics, the event signal is output, the valve can be forcibly fully closed or
fully opened at your choise also.
• Event lamp light up/output
Two of the following event types can be output:
•
Alarm output (When the flowrate deviation alarm or self-diagnostics occurs.)
•
Flowrate upper/lower limit output (Output by comparison to the optional
upper/lower flowrate limit setting value.)
•
Integration count up output (When the integration setting flowrate is
exceeded.)
•
Integration pulse output (Pulse can be output for each integration display
unit.)
•
OK output (When the control flowrate is within the "set point ± allowable
range".)
•
The operating mode can be identified and output externally as an event.
The output ON delay time can also be set. However, the delay cannot be set
to integration pulse output. In addition, the output logic can be reversed (at
normal state: ON, at event occurrence: OFF). However, the output is always
OFF during power OFF.
• "OK" lamp light up / output
The "OK" lamp can be made to light when the control flowrate is within the
“setting value ± allowable range”. This function is very handy for verifying at a
glance whether or not the new setting value is being followed properly when a
setting value is changed. The "OK" lamp output can also be used as an interlock
signal for subsequent processes by assigning it to event output and loading it to a
sequence program.
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