Hydrogen-Fuel Cell

Base on my short experiences when execute several automation project, I would like share how to make the instrumentation wiring diagram. The main concept that needed to be understand when make instrumentation wiring diagram is we should ensure there is no noise that disturb the signal from field transmitter and to field actuator. Control loop’s actual performance of automation system will affected when signal transmission from/to actual field instruments are disturbed by noises. Several sources of noise that needed to be considering are:

1. High AC Voltage Cable → when instrument cables adjacent to strong AC fields which are present near large motors, generators, electric furnaces, and transformers, then instrument cables will act as an antenna that picking up the magnetically noise that generated by that devices.
2. Radio Frequency (RF) radiation → these noise generate by walkie-talkie signal interference near to instrument cables.
3. Electrostatic or capacitive coupling with other circuits system.
4. Direct coupling with other circuits system, like leakage current paths, ground current loops, or a common return lead for more than one circuit system. Continue Reading »

Tags: Instrumentation

ADAM-5510KW/TCP is PAC (Programmable Automation Controller) base on IEC-61131-3 standard package. IEC-61131-3 is the third part of open international standard IEC 61131 for graphical and textual PAC programming languages. Base on IEC-61131-3, PAC should support these programming languages :

• Ladder Diagram (LD)
• Function Block Diagram (FBD)
• Structured Text (ST)
• Instruction List (IL)
• Sequential Function Chart (SFC)

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Tags: HMI/SCADA, Modbus, PLC/PAC

On this chapter I will show you how to configure Wonderware ArchestrA 3.0 to control and monitor 2 or more PLC SLC500 via TCP protocol. Before that, you should have already install :

• Microsoft XP Professional Service Pack 2 – minimum operating system
• Microsoft SQL Server 2005 Service Pack 2 – repository database when running ArchestrA application
• Wonderware Intouch 10 – main template to insert ArchestrA symbol libraries

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Tags: HMI/SCADA, Modbus, PLC/PAC

ADAM-4056S is a 12-channel sink type isolated digital output module for critical applications. The open collector output can provide voltage from +5 to +40 V and the status reading output could see on the LED indicator. On this article, I would like share my experience on communication between ADAM-4056S and Visual Basic 6.0. Although ADAM-4056S support for ASCII and Modbus/RTU protocols, on this article I just explain for ASCII protocol.

I have successful communicate Visual Basic 6.0 to ADAM 4056S via PCI-1612CU-AE (4-port RS-232/422/485 Universal PCI COMM Card w/Isolation & Surge Protection). Continue Reading »

Tags: HMI/SCADA, Modbus