Pulse Train Output; Set Sinking Mode/Sourcing Mode - YASKAWA GA800 600 V Drive Installation & Primary Operation

10 Drive Start-Up Procedure
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Pulse Train Output

You can use pulse train monitor output terminal MP for sourcing mode or for sinking mode.
• Use for sourcing mode
The load impedance changes the voltage level of the pulse train output signal.
Note:
Use the formula in Figure 10.12
A - Load Impedance
• Use in sinking mode
The external power supply changes the voltage level of the pulse train output signal. Keep the voltage from an
external source between 10.8 Vdc to 16.5 Vdc. Adjust the load impedance to keep the current at 16 mA or lower.
External Power Supply (V)
10.8 Vdc to 16.5 Vdc
A - External power supply
B - Load Impedance
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Set Sinking Mode/Sourcing Mode

Close the circuit between terminals SC-SP and SC-SN to set the sinking mode/sourcing mode and the internal/
external power supply for the MFDI terminals. The default setting for the drive is internal power supply sinking
mode.
NOTICE
Damage to Equipment. Do not close the circuit between terminals SP-SN. If you close the circuits terminals SC-
SP and terminals SC-SN, it will cause damage to the drive.
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Load Impedance
R (kΩ)
L
1.5 kΩ or more
4.0 kΩ or more
10 kΩ or more
to calculate the necessary load resistance (kΩ) to increase output voltage V
Figure 10.12 Wiring to Use Pulse Train Output in Sourcing Mode
Figure 10.13 Wiring to Use Pulse Train Output in Sinking Mode
Load Impedance (kΩ)
1.0 kΩ or more
C - Sinking current
YASKAWA TOEPC7106170VA GA800 600 V Drive Installation & Primary Operation
Output Voltage
V (V)
MP
5 V or more
8 V or more
10 V or more
(V).
MP
Sinking current (mA)
16 mA maximum