Chandler Engineering Ametek Quizix 5000 Series, Руководство пользователя

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Chandler Engineering
5000 SERIES PUMP MANUAL
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13.2 Digital Output Lines
Two logic level output lines are available on pins 10 and 29. These are CMOS type logic level signals
which, when at a logic zero (low level), put out a voltage close to ground (guaranteed to be less than
0.2 volts for a 20 milliamperes maximum current sink). When the signals are at a logic one (high level)
they put out a voltage close to the 5 volt supply (guaranteed to be greater than 4.6 volts when sourcing
up to 20 milliamperes). These signals will either source or sink current but are limited to a maximum
of 20 milliamperes. These digital output lines can be used to interface with an external digital system
or light an LED type indicator. Do not short these lines to +5 volts or ground as they are not short circuit
protected.
13.3 Digital Input Lines
Two logic level input lines are available on pins 9 and 28. These are CMOS type logic inputs with a 10
kiloohm pullup resistor to the 5 volt logic supply. These signals can be activated by an external
microswitch or a digital output from another digital logic system. The input voltage range for a logic
low signal is from 0 to 1.4 volts and a logic high is a signal from 3.6 to 5 volts. Signal levels should not
go above the 5 volt logic power supply voltage or below ground. A typical use for this signal would be
to detect an oven door opening with a microswitch on the door.
13.4 Analog Signal Input Lines
A typical application could involve a pressure transducer which is supplied by the 12 volt supply and
has an output voltage which goes from 0 to 10 volts. After wiring this transducer to the CMD-5000 user
interface and setting up the linear scaling in PumpWorks, the pressure detected by this transducer could
then be displayed and recorded by the PumpWorks software.
13.4.1 Auxiliary Current Loop Inputs
One analog current input channel is available for use with external sensors. This line is connected
with a 16 bit analog to digital (A/D) converter on the CMD-5000 controller printed circuit board.
The input range for the A/D used for this conversion is 0-32mA. An analog voltage that is within
the 0-32mA range is supplied to the appropriate channel. The A/D converter digitizes the signal,
then the 16 bit result is displayed by PumpWorks. PumpWorks allows for linear scaling of the data
so that convenient units can be obtained for the signal. The electrical characteristics of the input
allow for signals up to +24 volts and as low as -12 volts without damage. The input resistance is
about 10-60 ohms.
A typical application could involve an external 4-20mA pressure transducer. After wiring this
transducer to the CMD-5000 user interface and setting up the linear scaling in PumpWorks, the
pressure detected by this pressure transducer could then be displayed and recorded by
PumpWorks.