YASKAWA Varispeed G7 Series Instruction Manual page 69

External power:
48 V max.
Shunt Connector CN5 and DIP Switch S1
The shunt connector CN 5 and DIP switch S1 are described in this section.
The functions of DIP switch S1 are shown in the following table.
Name
RS-485 and RS-422 terminating resis-
S1-1
tance
S1-2 Input method for analog input A2
 Sinking/Sourcing Mode
The input terminal logic can be switched between sinking mode (0-V common) and sourcing mode (+24-V
common) if shunt connector CN5 is used. An external 24-V power supply is also supported, providing more
freedom in signal input methods.
Flywheel diode
Coil
50 mA max.
Fig 2.17 Flywheel Diode Connection
CN5
O
F
F
Fig 2.18 Shunt Connector CN5 and DIP Switch S1
Table 2.12 DIP Switch S1
Function
OFF: No terminating resistance
ON: Terminating resistance of 110 Ω
OFF: 0 to 10 V, -10 to 10 V (internal resistance: 20 kΩ)
ON: 4 to 20 mA (internal resistance: 250 Ω)
Wiring Control Circuit Terminals
The rating of the flywheel diode
must be at least as high as the
circuit voltage.
S1
Terminating resistance
OFF ON
1
2
Analog input switch
V I
: Factory settings
Note: Refer to Table 2.12 for S1
functions and to Table
2.13 for CN5 functions.
Setting
33
2-