Set Sinking Mode/Sourcing Mode - YASKAWA GA800 Series Installation & Primary Operation

10 Drive Start-Up Procedure
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
■

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 Do not close the circuit between terminals SP-SN. A closed circuit between these terminals will cause damage to
the drive.
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Figure 10.12 Wiring to Use Pulse Train Output in Sourcing Mode
Load Impedance (kΩ)
Figure 10.13 Wiring to Use Pulse Train Output in Sinking Mode
1.0 kΩ or more
C - Sinking current
YASKAWA TOEPC71061737B GA800 Drive Installation & Primary Operation
Sinking current (mA)
16 mA maximum