10 Drive Start-Up Procedure
44 YASKAWA TOEPC7106170VA GA800 600 V Drive Installation & Primary Operation
■ 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.
Load Impedance
R
L
(kΩ)
Output Voltage
V
MP
(V)
1.5 kΩ or more 5 V or more
4.0 kΩ or more 8 V or more
10 kΩ or more 10 V or more
Note:
Use the formula in Figure 10.12 to calculate the necessary load resistance (kΩ) to increase output voltage V
MP
(V).
A - Load Impedance
Figure 10.12 Wiring to Use Pulse Train Output in Sourcing Mode
• 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) Load Impedance (kΩ) Sinking current (mA)
10.8 Vdc to 16.5 Vdc 1.0 kΩ or more 16 mA maximum
A - External power supply
B - Load Impedance
C - Sinking current
Figure 10.13 Wiring to Use Pulse Train Output in Sinking Mode
■ 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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