Toshiba Tosvert VF-AS1 Instruction Manual page 123

 Connection method
1) a-contact input
Inverter
a-contact switch
Input
terminal
CC
2) Connection with transistor output
Inverter Programmable controller
Input
terminal
CC
* Interface between programmable controller and inverter
Note: When using a programmable controller with open collector outputs for control, connect it to the P24/PLC
terminal, as shown in the figure below, to prevent the inverter from malfunctioning because of current
flowing in.
Also, be sure to turn the SW1 slide switch to the PLC position.
Programmable controller
3) Sink logic/source logic input
Sink logic/source logic (input/output terminal logic) switching is possible.
 For details, refer to Section 2.3.2.
Sink setting
 This function is activated when the input terminal and CC
(common) are short-circuited. Use this function to
specify forward/reverse run or a preset speed operation.
 Operation can be controlled by connecting the input and CC
(common) terminals to the output (no-contacts switch) of the
programmable controller. Use this function to specify
forward/reverse run or a preset speed operation. Use a
transistor that operates at 24Vdc/5mA.
Inverter
SW1
P24/PLC
F~S4
+24V
power
supply
CC
F-7
+24V
PLC
PLC
E6581442
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