Digital I/O Specifications - Toshiba LF620F Instruction Manual

10.1 Digital I/O Specifications

The specifications of the digital I/O terminals for the converter for electromagnetic flowmeter: LF62*F are
as follows:
Digital Output 1(DO1 )
Output type:
Number of outputs:
Capacity:
Digital Output 2(DO2 )
Output type:
Number of outputs:
Capacity:
Digital Input (DI )
Input signal:
Input resistance:
Number of inputs:
• 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.)
• In standard specification (without digital I/O), semiconductor contact, photo coupler, and resistor
are not built in. Left DO2 and DI unconnected.
Photo coupler
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Transistor open collector
1
30 V dc, 200 mA maximum
Solidstate relay (non polarity)
1
150 V dc, 150 mA maximum
150 V ac(peal-to-peak), 100 mA maximum
20 to 30 V dc voltage signal
• High input level—20 to 30 V dc
• Low input level—2 V dc maximum
Approximately 2.7 kΩ
One point
Solidstate relay
COM
DI DO2
Voltage input (DI)
Contact output 2 (DO2)
Contact output 1 (DO1)
－ 111 －
6 F 8 A 0 9 2 8
Transistor open collector
Resistor
DO1
Flowmeter