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User Constant Settings and Functions
5.5.2 Using the Servo ON Input Signal
5 -70
5.5.2 Using the Servo ON Input Signal
The basic use and wiring procedure for the Servo ON (/S-ON) input signal (sequence input sig-
nal) is described below. Use this signal to forcibly turn OFF the Servomotor from the host con-
troller.
7 mA
+24 V
+24 VIN
CN1-47 3.3k
W
/S-ON
CN1-40
0 V
Servopack
I/O power supply
Photo-
coupler
Host controller
®
Input /S-ON CN1-40
Servo ON
Speed/Torque
Control,
Position Control
This signal is used to turn the Servomotor ON and OFF.
CN1-40 is
ON (Low
Level)
Turns the Servomotor ON. This is the
normal state (called the Servo ON state).
Servo ON
Servomotor is ON.
The Servomotor operates
according to signal input.
CN1-40 is
OFF (High
Level)
The Servomotor is OFF and cannot oper-
ate (called the Servo OFF state). Do not
turn the Servomotor OFF while it is oper-
ating except in an emergency.
Servo OFF Servomotor is OFF.
Servomotor can not oper-
ate.
Do not use the Servo ON (/S-ON) signal but rather always use an input reference signal to start or stop the
Servomotor.
Set the following user constant to 7 if the /S-ON signal will not be used.
Pn50A.1
/S-ON Signal Mapping
Factory
Setting:
0
Speed/Torque
Control,
Position Control
Servopack
CN1-40
(/S-ON)
0 V
The external short-circuit wiring shown
in the figure can be omitted if the Servo
ON (/S-ON) input signal is not used.
Pn50A.1 Setting
Description
0
Enables the Servo ON (/S-ON) input signal. (The Servo is OFF when
CN1-40 is open, and is ON when CN1-40 is at 0 V.)
7
Disables the Servo ON (/S-ON) input signal. (The Servo is always ON, and
has the same effect as shorting CN1-40 to 0 V.)
Note
See
5.3.3 Input Circuit Signal Allocation
for other Pn50A.1 settings.
5
IMPORTANT
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