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Pulse I/O Board Section 8-2
The internal 1.6-kΩ (1/2 W) resistance can be used as bypass resistance
in the following way.
• The transistors of the internal circuits of the pulse output section are OFF
when pulse output is stopped.
Example: 7 mA output transistor current = 4 mA load current + 3 mA bypass current
Pulse I/O Board
Approx. 3 mA
Approx.
3 mA
5-V DC power supply
Motor driver (for 5 V input)
Load current =
Approx. 4 mA
CCW
input
CW
input
Shielded twisted-pair cable
Approx. 4 mA
Approx. 4 mA
1.6 kΩ
1.6 kΩ
24-V DC input
5-V DC input
CCW pulse
output
CW pulse
output
Approx.
7 mA
Approx.
7 mA
Output transistor
During pulse output
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