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Submitted by ambere on Wed, 11/15/2017 - 00:00

EDD-3701x New EtherCAT Drive

      The EDD-3701x EtherCAT slave drive joins Galil’s EtherCAT Family. This family has grown to include two EtherCAT masters and an I/O slave with both digital and analog I/O points. The EDD-3701x is a motor amplifier that operates in an EtherCAT distributed system where there are up to 32 slave drives and one master. It has a daisy chain topology using standard CAT5 Ethernet cables. The EDD-3701x can interface with Galil masters (DMC-500x0 and DMC-52xx0) for sophisticated applications or with TwinCAT® for very simple applications. 

      The EDD-3701x series has the ability to control brushed, brushless, steppers, and microstepping motors (See Table 1 for more details). Unlike the competition, the EDD-3701x can both control a motor and also has 8 digital inputs, 4 digital outputs, 2 analog inputs, and 2 analog outputs. All I/O information from these drives are accessible by the EtherCAT master. This capability can eliminate the need for separate EtherCAT I/O devices.
The configuration of the EDD-3701x is done using the Galil’s GDK software. Simply connect to a PC via EDD-3701x’s USB port, follow the GDK configuration tool process, and start moving motors. The EDD-3701x also comes with a setup guide to get the user from taking the EDD out of the box to moving motors in a manner of minutes.

      The EDD-3701x has a small form factor with just 3.9”x5.0”x1.5”. It can operate in either Cyclic Synchronous Position mode (CSP) or Cyclic Synchronous Torque mode (CST). It also accepts quadrature encoder feedback up to 15 MHz.





Motor Type Brushed/Brushless 2-Phase Stepper 2-Phase Stepper / 2-Phase Brushless
Drive Type PWM Stepper Micro-Stepper/PWM
Current 10A cont,. 15A peak 1.4 A/Phase 10A cont,. 15A peak
Supply Voltage 20-80 VDC 12-30 VDC 20-80 VDC

Table 1: EDD-3701x drive sepcifications.

DMC-500x0 and DMC-52xx0 EtherCAT Masters

      To command the EDD-3701x, Galil provides the DMC-52xx0 and DMC-500x0. The DMC-52xx0 is Galil’s pure EtherCAT controller that can interface with up to 32 axes of motion and 2 I/O slave devices. The DMC-50000 controls a combination of 8 local or EtherCAT axes. Both EtherCAT masters have onboard I/O with up to 8 digital inputs, 8 digital outputs, 8 analog inputs, and 8 analog outputs which can also eliminate the need for a separate I/O device.

      Each Galil EtherCAT masters can interface with slave drives in Cycle Synchronous Position mode (CSP) and the DMC-500x0 can also use Cycle Synchronous Torque mode (CST). Both masters have an EtherCAT port to communicate with EtherCAT drives and I/O devices, and an Ethernet and serial port for communication with the host PC.
As with all of Galil’s products, the DMC-52xx0 and DMC-500x0 use Galil’s two-letter English like command language for both EtherCAT configuration and motion control execution.

RIO-574x0 EtherCAT I/O Slave

      Galil offers the RIO-574x0 if the I/O on the Galil EtherCAT Master and/or the EDD-3701x is not sufficient for the application. It also provides flexibility if additional I/O is needed far from the DMC or EDD.

      The RIO-574x0 is Galil’s EtherCAT I/O slave with up to 16 digital inputs and 16 digital outputs. Unlike the competition, the RIO-574x0 also offers 8 analog inputs and 8 analog outputs. It has two EtherCAT ports and one micro USB port for configuration using a host.

Full Featured EtherCAT Family

      With the addition of the EDD-3701x Galil can now provide a complete EtherCAT solution for the most demanding applications. Contact a Galil Applications Engineer to learn more about what Galil’s EtherCAT Family can accomplish with your application. Email us at or give us a call at (916) 626-0101. Here are links to the EtherCAT Product Page and EDD-3701x Product Page.