YASKAWA E7 Installation Manual page 18

Sinking/Sourcing Mode
The input terminal logic can be switched between sinking mode (0V common) and sourcing mode (+24V common) by using
the terminals SN, SC, and SP. An external power supply can also be connected, providing more freedom in signal input
methods.
Table 2.11 Sinking/Sourcing Mode and Input Signals
Internal Power Supply – Sinking Mode
External Power Supply – Sinking Mode
External +24V
(Factory Default)
External Power Supply – Sourcing Mode
Internal Power Supply – Sourcing Mode
External +24V
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