Functions And Settings For The /S-On (Servo On) Signal; Function Of The /S-On (Servo On) Signal; Setting To Keep The Servo On And Supply Power To The Motor Continuously - YASKAWA SGD7S Product Manual

5.5

Functions and Settings for the /S-ON (Servo ON) Signal

The /S-ON (Servo ON) signal is used to enable Servomotor operation.
This section describes the function of and settings for the /S-ON signal.
5.5.1

Function of the /S-ON (Servo ON) Signal

Type
Input
You can use Pn50A = n.X (/S-ON (Servo ON) Signal Allocation) to allocate the /S-ON sig-
nal to a different input signal terminal. Refer to the following section for details on input signal
allocation.
6.1.1 Input Signal Allocations on page 6-4
1. Always input the /S-ON signal before you input a speed, position, or torque reference to start
the Servomotor. Never input the reference first and then use the /S-ON signal or turn ON the
AC power supply to start the Servomotor. Doing so will degrade internal elements and may
Important
cause an accident.
2. Input the /S-ON signal while the Servomotor is stopped. You cannot turn ON the servo while
the Servomotor is operating.
5.5.2 Setting to Keep the Servo ON and Supply Power to the
Motor Continuously
You can set Pn50A = n.X (/S-ON (Servo ON) Signal Allocation) to 7 (The signal is always
active) to keep the servo ON and supply power to the motor continuously.
Parameter

n.
(default setting)
Pn50A

n.
1. If you set this parameter to keep the servo ON continuously, power will be supplied to the
motor as soon the main circuit power supply to the SERVOPACK is turned ON. If there is
already a speed, position, or torque reference input, the Servomotor or machine may perform
Important
unexpected operation. Always implement safety measures.
2. If a resettable alarm occurs and operation is disabled (power is not supplied to the motor),
operation will be automatically enabled (power will be supplied to the motor) when the alarm is
reset. If you set this parameter to keep the servo ON continuously, the Servomotor or machine
may perform unexpected operation when an alarm is reset.
Signal Connector Pin No.
CN1-40
/S-ON
(default setting)

0
The S-ON signal is active when CN1-40 input
signal is ON (closed).
The signal is always active.

7
(The /S-ON signal is always active.)

5.5 Functions and Settings for the /S-ON (Servo ON) Signal

5.5.1 Function of the /S-ON (Servo ON) Signal

Signal Status
Power is supplied to the Servomo-
ON (closed)
tor to enable operation.
Power supply to the Servomotor is
OFF (open)
stopped and operation is disabled.
Meaning
Function
When Enabled Classification
After restart Setup
5
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