vii
Using This Manual
Technical Terms Used in This Manual
The following terms are used in this manual.
Differences in Terms for Rotary Servomotors and Linear Servomotors
There are differences in the terms that are used for Rotary Servomotors and Linear Servomotors.
This manual primarily describes Rotary Servomotors. If you are using a Linear Servomotor, you
need to interpret the terms as given in the following table.
Term
Meaning
Servomotor
A
Σ
-7-Series Rotary Servomotor or Linear Servomotor
Rotary Servomotor
A
Σ
-7-Series Rotary Servomotor (SGM7J, SGM7A, or SGM7G).
Linear Servomotor
A
Σ
-7-Series Linear Servomotor (SGLF or SGLT).
SERVOPACK
A
Σ
-7-Series
Σ
-7S servo amplifier with EtherCAT Communications References.
Servo Drive
The combination of a Servomotor and SERVOPACK.
Servo System
A servo control system that includes the combination of a Servo Drive with a host controller
and peripheral devices.
servo ON
Supplying power to the motor.
servo OFF
Not supplying power to the motor.
Servo ON command
(Enable Operation
command)
A command that is used to turn ON the servo (i.e., supply power to the motor) when bit 3 of
controlword (6040 hex) is changed to 1 (ON) while the control power supply and main circuit
power supply are ON.
Refer to the following section for details.
Servo OFF command
(Disable Operation
command)
A command that is used to turn OFF the servo (i.e., power not supplied to the motor) when
bit 3 of controlword (6040 hex) is changed to 0 (OFF) while the control power supply and
main circuit power supply are ON.
Refer to the following section for details.
base block (BB)
Shutting OFF the power supply to the motor by shutting OFF the base current to the power
transistor in the SERVOPACK.
servo lock
A state in which the motor is stopped and is in a position loop with a position reference of 0.
Main Circuit Cable
One of the cables that connect to the main circuit terminals, including the Main Circuit Power
Supply Cable, Control Power Supply Cable, and Servomotor Main Circuit Cable.
S
The Engineering Tool for setting up and tuning Servo Drives or a computer in which the Engi-
neering Tool is installed.
Rotary Servomotors
Linear Servomotors
torque
force
moment of inertia
mass
rotation
movement
forward rotation and reverse rotation
forward movement and reverse movement
CW and CCW pulse trains
forward and reverse pulse trains
rotary encoder
linear encoder
absolute rotary encoder
absolute linear encoder
incremental rotary encoder
incremental linear encoder
unit: min
-1
unit: mm/s
unit: N·m
unit: N