1-9
1-3 Servo Driver Nomenclature
Control I/O Connector (CN1)
Encoder Connector (CN2)
Charge indicator
Parameter Unit Connector (CN3)
Battery holder
Holds the backup battery for when a
Servomotor with an absolute encoder is
used.
Top cover (See note.)
Lit when the main-circuit is powered. Even
after the power is turned OFF, it remains lit
as long as an electric charge remains in
the main-circuit capacitor, so do not touch
the Servo Driver’s terminals during this
period.
Main-circuit power terminals
These are the input terminals for the
main-circuit power supply.
Control-circuit power terminals
These are the connection terminals for the
control-circuit power supply and the
external regenerative energy resistance.
Servomotor connection terminals
These are the connection terminals for the
Servomotor power lines.
Protective ground terminals
These are the ground terminals for preventing
electric shock. Ground to 100 Ω or less.
Battery Connector (CN8)
Connects the backup battery for the
absolute encoder.
Analog Monitor Output Connector (CN5)
Rotation speed, torque command values,
etc., are output in analog voltage. A special
cable is used.
Display Area
Displays Servo Driver status, alarm
signals, parameters, etc., in five digits,
7-segment LED.
Settings Area
Used for setting parameters and
monitoring Servo Driver status.
Power indicator
Lit when the control power is being
supplied.
Used for connecting the Parameter Unit or
for communicating with a computer.
Note: On the R88D-WT60H (6 kW), this
connector is located to the left of the
Display and Settings Areas.
Used for control I/O signals.
Connects the encoder provided with the
Servomotor.
(With top cover opened)
Used for connecting a DeviceNet Option
Unit.
Option Unit Connector (CN10)
Note The R88D-WT60H to R88D-WT150H models do not have a top cover. The Analog Monitor Out-
put Connector (CN5), the Battery Connector (CN8), and the battery holder are all located to the
right of the display and operation areas. Also, the Terminal Block (for the control circuit, main cir-
cuit, and Servomotor) is mounted to the bottom of the Servo Driver.
Introduction Chapter 1