Driver for AC Servomotors (EA Series)

Product catalog summary

Features
The document describes the EAD-18C and EAD-18D models, which are 3-phase sine wave PWM drivers designed for Citizen Chiba Precision’s miniaturized AC servomotors. These drivers operate on a DC24V single power source and incorporate digital servo control using a CPU, resulting in a compact design.

Specifications

Model: EAD-18C (D)-012 and EAD-18C (D)-030
Input Power Supply: DC24V
Continuous Rated Output Current: 1.2Arms
Maximum Rated Output Current: 3.0Arms
Driving System: 3-Phases Sine Wave PWM
Control System: Position Control
Encoder Type: Open Collector or Line Driver
Operating Temperature/Humidity: 0～50℃ / Below 80% RH without condensation
Storage Temperature/Humidity: －20～80℃ / Below 80% RH without condensation
Outside Dimension: 125×44×81.5 mm
Maximum Input Frequency: 600kHz
Positioning Accuracy: ±1 pulse by encoder resolution

Options
Extension cables with line driver options are available for both direct and indirect connection types. These are used when the driver is placed in a case or when there is a distance between the motor and the driver. The document advises selecting the line driver type for the driver side and notes that changes from Open Collector Type to Line Driver Type can be arranged at the customer's expense.

Reference Drawing of Combination
The document provides reference drawings for combinations of the EAD-18D-012 and EAD-18D-030 models with various cable lengths (3m, 5m, 10m) for different motor models (MA-321, MA-322, MA-324, MA-3210).

Catalog excerpts

Driver for AC Servomotors (EA Series) -1

Driver for AC Servomotors (EA Series) EAD-18C for Open Collector EAD-18D for Line Driver ■ Outside Conﬁguration & Install Dimension (Unit: mm) ■ Features ● This is 3-phases sine wave PWM driver ● This is a driver exclusive for Citizen Chiba Precision s Miniaturized AC Servomotor ● It is downsized by adopting digital servo control which uses CPU ● DC24V single power source (Built-in control power source) M3 Tapped Hole for Frame Ground Aluminum PCB Moun�ng Chassis Power Source to Drive Motor USB Transceiver Pulse Counter Micro Controller Serial I/O Parameters Se�ng Processing 3 Phases Alterna�ng Current/ d-q Coodinate Converter Input / Output Control Posi�on Controller 3-Phases Motor Drive Circuit Posi�on Command Motor Current Detec�ng Circuit Current Controller Speed Controller 3 Phases Alterna�ng Current/ d-q Coodinate Converter Mechanical Angle θ Electrical Angle θ Speed / Posi�on Sign

Open the catalog to page 1

Driver for AC Servomotors (EA Series) -2

The last 3 digits, 012, of the model number is for EA-17 / EA-21 Series, and 030 is for EA-25 / EA-30 Series ■ Specifications Note1 1 : Another circuit board is required for Line Driver (to mount on the driver) Note1 2 : Input frequency is determined by number of pulses of encoder and rated speed of motor If some distance between the motor and the driver is required, a line driver cable which improves noise immunity is available. Note : Please select the line driver type for the driver side also. If you need to change from the Open Collector Type to the Line Driver Type, please contact us and...

Open the catalog to page 2