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Control Circuit
1.7.4 Changing the control logic
1) Sink logic type
•In this logic, a signal switches on when a current flows out of the corresponding
signal input terminal.
Terminal SD is common to the contact input signals. Terminal SE is common to the
open collector output signals.
The input signals are set to sink logic.
To change the control logic, the jumper
connector must be moved to the other
position.
! Change the jumper connector position
using tweezers, a pair of long-nose pliers,
etc. Change the jumper connector position
before switching power on.
CAUTION
•Make sure that the front cover is installed securely.
•The front cover is fitted with the capacity plate and the inverter unit with the
rating plate. Since these plates have the same serial numbers, always replace
the removed cover onto the original inverter.
•The sink-source logic change-over connector must be fitted in only one of
those positions. If it is fitted in both positions at the same time, the inverter
may be damaged.
•Connecting a positive external power
supply for transistor output to terminal
PC prevents a malfunction caused by
an undesirable current. (Do not
connect terminal SD of the inverter
with terminal 0V of the external power
supply. When using terminals PC-SD
as a 24VDC power supply, do not
install an external power supply in
parallel with the inverter. Doing so may
cause a malfunction in the inverter due
to an undesirable current.)
AX40
SE
RUN
24VDC
STR
STF
SD
1
9
R
R
R
R
Power
supply
Inverter
1
2
9
10
24VDC
SD
PC
STR
STF
24VDC
(SD)
9
AY40 transistor
output module
Inverter
Current flow