Input Circuit

1/4 NEC2505

To DMC-1748* I/O

DMC-1748* GND

I/OCn

1/8 RPx4

x = bank number 0-7

n = input number 17-80

I/On

Figure A.6 – Opto Input Circuit

Connections to this optically isolated input circuit are done in a sinking or sourcing configuration, referring to the direction of current. Some example circuits are shown below:

 

Sinking

 

Sourcing

I/OCn

+5V

I/OCn

GND

I/On

GND

I/On

+5V

 

Current

 

Current

Figure A.7 – Input Sinking and Sourcing Diagram

There is one I/OC connection for each bank of eight inputs. Whether the input is connected as sinking or sourcing, when the switch is open no current flows and the digital input function @IN[n] returns 1. This is because of an internal pull up resistor on the DMC-17x8/DB-14064*. When the switch is closed in either circuit, current flows. This pulls the input on the DMC-17x8/DB-14064 to ground, and the digital input function @IN[n] returns 0. Note that the external +5V in the circuits above is for example only. The inputs are optically isolated and can accept a range of input voltages from 4 to 28 VDC.

Active outputs are connected to the optically isolated inputs in a similar fashion with respect to current. An NPN output is connected in a sinking configuration, and a PNP output is connected in the sourcing configuration.

 

Sinking

 

 

Sourcing

 

I/OCn

 

+5V

I/OCn

 

GND

I/On

 

NPN

I/On

 

PNP

Current

output

Current

output

 

 

 

 

 

 

Figure A.8 – Output Sinking and Sourcing Diagram

Whether connected in a sinking or sourcing circuit, only two connections are needed in each case. When the NPN output is 5 volts, then no current flows and the input reads 1. When the NPN output goes to 0 volts, then it sinks current and the input reads 0. The PNP output works in a similar fashion, but the voltages are reversed i.e. 5 volts on the PNP output sources current into the digital input and the input reads 0. As before, the 5 volt is an example, the I/OC can accept between 4-28 volts DC.

228 • Appendices

DMC-1700/1800

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Galil DMC-1800, DMC-1700 user manual Input Circuit, Sinking Sourcing
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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.
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