Hitachi SJ Series User Manual page 80

Chapter 7
7.7 Control Circuit Terminal Area
7.7.1 Switch Configuration
(SW4) (SW3) (SW2) (SW1) (SW5) (SW6)
Ao1 Ai2
Ao2
20mA 20mA
20mA
10V 10V
10V
Points to be noted on switches
・Using a switch under power-on
condition may cause failure. Use the
Failure
switch only after turning off the power
and confirming that the POWER lamp
on the operator keypad is off.
Do
Description of switches
Indication SW name
Ai1
Analog input 1 switch
(SW1)
Ai2
Analog input 2 switch
(SW2)
Ao1
Analog output 1 switch
(SW3)
Ao2
Analog output 2 switch
(SW4)
Switching the method of
P.SEL
power supply to the input
(SW5)
terminals
SRC/SINK
Switch of sink/source for
the input terminals
(SW6)
Ai1
P.SE
20mA SRC
EX
L
SINK
10V IN
Switch sink/source of the input terminal logic
Switch internal power supply/external power supply of the
input terminal power supply
Switch voltage input/current input of analog input 1
Switch voltage input/current input of analog input 2
Switch voltage output/current output of analog output 1
Switch voltage output/current output of analog output 2
Switches input specification of analog input 1 (Ai1 terminal).
10V: Voltage input is available.
20mA: Current input is available.
Switches input specification of analog input 2 (Ai2 terminal).
10V: Voltage input is available.
20mA: Current input is available.
Switches output specification of analog output 1 (Ao1 terminal).
10V: Output changes to voltage output.
20mA: Output changes to current output.
Switches output specification of analog output 2 (Ao2 terminal).
10V: Output changes to voltage output.
20mA: Output changes to current output.
Switches the method of power supply to the input terminals.
IN: Drives the input terminals using the internal power supply.
EX: Inputs an external power supply to drive input terminals.
(In the case of EX, a power supply is required between the input terminals and COM.)
Switches the sink/source logic for input terminals.
This switch is enabled when SW5 is IN.
SINK: Enables sink logic.
SRC: Enables source logic.
7-25
Wire Connection and Optional Devices
Control circuit terminal area
・If the switch status does not match the
actual input and output specifications, it
Failure
may cause failure.
Make sure to check that input and
output to be used and switch
Do
characteristics are the same.
Description