Toshiba lf516 Manual De Usuario
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10.1 Digital I/O Specifications
The specifications of the digital I/O terminals for the converter for electromagnetic flowmeter: LF546 are
as follows:
as follows:
Digital Output 1(DO1 )
Output type:
Transistor open collector
Number of outputs:
1
Capacity:
30 V dc, 200 mA maximum
Digital Output 2(DO2 )
Output type:
Solidstate relay (non polarity)
Number of outputs:
1
Capacity:
150 V dc, 150 mA maximum
150 V ac(peal-to-peak), 100 mA maximum
Digital Input (DI )
Input signal:
20 to 30 V dc voltage signal
•
High input level—20 to 30 V dc
•
Low input level—2 V dc maximum
Input resistance:
Approximately 2.7 kΩ
Number of inputs:
One point
•
Each I/O terminal can be used as a specified function terminal when selected.
•
Terminal COM is the signal COMMON for the other three terminals (DO1, DO2 and DI).
•
Each terminal is isolated from the internal circuits.
(The output terminals are not isolated from each other.)
(The output terminals are not isolated from each other.)
Flowmeter
Solidstate relay
Transistor open collector
(Standard)
(Standard)
Voltage input (DI)
Contact output 2 (DO2)
Contact output 1 (DO1)
Resistor
Photo coupler
COM
DI
DO2
DO1