Analog Inputs, Amplifier Interface | Galil DMC-1700, DMC-1800

External Resistor Needed for		External Resistor Needed for
Voltages > 24V	LSCOM	Voltages > 24V	LSCOM
	LSCOM		LSCOM

2.2K

FLSX

Configuration to source current at the	Configuration to sink current at the
LSCOM terminal and sink current at	LSCOM terminal and source current at
switch inputs	switch inputs

Figure 3-2. Connecting a single Limit or Home Switch to an Isolated Supply.

This diagram only shows the connection for the forward limit switch of the X axis.

NOTE: As stated in Chapter 2, the wiring is simplified when using the ICM-1900 or AMP-19X0 interface board. This board accepts the signals from the ribbon cables of the DMC-1700/1800 and provides phoenix-type screw terminals. A picture of the ICM-1900 can be seen in Chapter 2. If an ICM-1900 is not used, an equivalent breakout board will be required to connect signals from the DMC-1700/1800.

Bypassing the Opto-Isolation:

If no isolation is needed, the internal 5 Volt supply may be used to power the switches. This can be done by connecting a jumper between the pins LSCOM or INCOM and 5V, labeled JP3. These jumpers can be added on either the ICM-1900 (J52) or the DMC-1700/1800. This can also be done by connecting wires between the 5V supply and common signals using the screw terminals on the ICM-1900 or AMP-19X0.

To close the circuit, wire the desired input to any ground (GND) terminal or pin out.

Analog Inputs

The DMC-1700/1800 has eight analog inputs configured for the range between -10V and 10V. The inputs are decoded by a 12-bit A/D decoder giving a voltage resolution of approximately .005V. A 16-bit ADC is available as an option. The impedence of these inputs is 10 KΩ. The analog inputs are specified as AN[x] where x is a number 1 thru 8.

Amplifier Interface

The DMC-1700/1800 analog command voltage, MOCMD, ranges between +/-10V. This signal, along with GND, provides the input to the power amplifiers. The power amplifiers must be sized to drive the motors and load. For best performance, the amplifiers should be configured for a current mode of operation with no additional compensation. The gain should be set such that a 10 Volt input results in the maximum required current.

The DMC-1700/1800 also provides an amplifier enable signal, AEN. This signal changes under the following conditions: the watchdog timer activates, the motor-off command, MO, is given, or the OE1command (Enable Off- On-Error) is given and the position error exceeds the error limit. As shown in Figure 3-3, AEN can be used to disable the amplifier for these conditions.

The standard configuration of the AEN signal is TTL active high. In other words, the AEN signal will be high when the controller expects the amplifier to be enabled. The polarity and the amplitude can be changed if you are using

DMC-1700/1800

Chapter 3 Connecting Hardware • 47

DMC-1800, DMC-1700 specifications

The Galil DMC-1700 and DMC-1800 are advanced motion controllers widely recognized for their high performance and versatility in the automation and robotics industries. These controllers are designed to meet the demands of complex motion control applications, providing users with enhanced features and innovative technologies that optimize motion precision and efficiency.

One of the main features of the Galil DMC-1700 is its ability to handle up to 8 axes of motion control. This capability makes it suitable for a range of applications, from simple point-to-point movements to intricate trajectories in multi-axis systems. In contrast, the DMC-1800 extends this functionality, supporting up to 64 axes, making it ideal for large-scale automation environments.

Both models leverage Galil's powerful programming interface, which simplifies the development of motion control applications. The DMC-1700 and DMC-1800 controllers utilize a high-level programming language that supports advanced motion commands, including linear interpolation, circular interpolation, and complex motion profiles. This feature allows users to implement sophisticated motion sequences seamlessly.

In terms of connectivity, the Galil DMC series offers multiple communication options, including Ethernet, RS-232, and CAN bus, ensuring compatibility with various hardware and enabling easy integration into existing systems. The controllers also come equipped with digital and analog I/O ports, providing flexibility for sensor feedback and actuator control.

The advanced technology incorporated into both the DMC-1700 and DMC-1800 includes on-board PID control, which ensures precise motion control through closed-loop feedback. This results in improved stability and accuracy, particularly in high-speed applications. Additionally, the controllers offer extensive diagnostics and monitoring capabilities, allowing for real-time performance analysis and troubleshooting.

Another notable characteristic of these motion controllers is their compact design, which offers space-saving advantages while maintaining high processing power. Their robust construction and ability to operate in challenging environments make them suitable for a wide range of industrial applications, from CNC machining to assembly lines.

In conclusion, the Galil DMC-1700 and DMC-1800 motion controllers stand out due to their high-performance capabilities, advanced programming features, and flexibility in connectivity. With their ability to handle complex motion control tasks efficiently, these controllers are invaluable tools for engineers and manufacturers looking to enhance their automation processes. By integrating Galil's innovative motion control technology, industries can achieve greater precision, speed, and reliability in their operational workflows.

Galil DMC-1700, DMC-1800 Analog Inputs, Amplifier Interface, Bypassing the Opto-Isolation

Models: DMC-1800 DMC-1700