PLC Supplier in Rajkot: Buying Guide

Key Takeaways

Rajkot OEMs use PLCs as the controller on special purpose machines, test rigs and control panels.
Pulse-type PLCs such as the RX3U and RX8U drive stepper and servo axes directly.
PLC-HMI combos save space and cost on small machines; the RM500 suits EtherCAT multi-axis builds.
RB Automation is an authorised Schneider Electric partner and supplies Rajkot from Ahmedabad.

Ask a Rajkot SPM builder what goes into a new machine and the PLC is usually the first item on the list. It runs the drilling and tapping SPMs made for pump and engine plants, the pump test rigs that record pressure and flow, and the panels that control compressors, conveyors and furnaces in foundries. RB Automation acts as a PLC supplier in Rajkot for both Schneider Electric and Rtelligent controllers. We ship from Ahmedabad and help you settle on the platform that fits the machine by phone, WhatsApp and email.

How Rajkot Uses PLCs

SPM builders in Aji GIDC, Bhaktinagar and on Gondal Road use pulse-type PLCs and PLC-HMI combos on drilling, tapping, indexing and assembly machines. Pump and engine plants at Metoda GIDC, Shapar-Veraval and Kuvadva use PLCs with analogue inputs on test rigs that read pressure, flow and speed. Casting and forging units use them on furnaces, compressors and sand plants, and panel builders around the city wire them into motor control and utility panels.

Controllers We Supply to Rajkot

Schneider Electric Modicon

We are an authorised Schneider Electric partner. The Modicon range covers M340 process controllers, machine controllers, motion controllers and distributed I/O (overview on the Schneider PLC page). For operator screens and supervision there is Citect SCADA and Harmony touch panels like the GTO and ET6.

Rtelligent PLCs

RX3U pulse-type small PLC: pulse outputs for stepper and servo axes on compact machines.
RX8U small PLC: up to 8 axes of pulse output, FX3U-compatible instructions and expansion through RE I/O modules.
RM500 PLC and motion controller: EtherCAT motion, programmed in CODESYS 3.5, for multi-axis machines.
Card-type remote I/O and the REC1 EtherCAT coupler for distributed points.

PLC and HMI in one unit

The MX3G-43C-22MT and MX3G-70C-48MT combine FX3S-compatible PLC logic, analogue inputs and high-speed pulse output with a touch screen. On a small SPM or test rig they remove a separate HMI and its wiring. See PLC-HMI combo.

Questions That Decide the PLC

How many I/O points? Count digital and analogue signals and keep spare capacity for later changes.
How many motion axes? Pulse outputs cover a few steppers or servos; EtherCAT suits many axes.
Which networks? Modbus, Ethernet or EtherCAT to drives, HMIs and any SCADA or data logging PC.
Machine or process? A test rig with transmitters needs analogue inputs and logging; an SPM needs fast I/O and motion.
What does the customer specify? Some end users ask for a particular brand; others leave it to the OEM.
Will it grow? Remote I/O adds points without reworking the main panel.

For the difference between the controller and the supervisory layer, read PLC vs SCADA.

Control Panels and Complete Systems

If you would rather receive a wired cabinet than loose parts, we also build custom PLC panels, fitted with the drives, sensors and transmitters the job needs. See our AC drive guide for Rajkot and servo drive guide for Rajkot.

Controller Options for Rajkot Projects

Controller	Brand	Strong point	Typical Rajkot use
Modicon machine controllers	Schneider Electric	Schneider ecosystem and support	OEMs whose buyers specify Schneider
Modicon M340 process controller	Schneider Electric	High analogue I/O capacity	Larger test rigs and utility systems
RX3U pulse-type PLC	Rtelligent	Pulse outputs for motion	Small SPMs with stepper axes
RX8U small PLC	Rtelligent	Up to 8 pulse axes, FX3U-compatible	Multi-axis drilling and tapping SPMs
RM500 PLC / motion controller	Rtelligent	EtherCAT, CODESYS 3.5	Synchronised multi-axis machines
MX3G-43C-22MT / MX3G-70C-48MT	PLC-HMI combo	PLC and touch screen in one	Compact SPMs and small test rigs

SPM Controller vs Test Rig Controller

Need	Special purpose machine	Pump or engine test rig
Main signals	Digital sensors, pulse or fieldbus to drives	Analogue pressure, flow and speed signals
Priority	Fast cycle and motion	Accurate readings and stored results
Usual companions	Servo or stepper drives, HMI	VFD, transmitters, flow meter, HMI or SCADA

A Typical PLC Application in Rajkot

A typical engine component line at Shapar-Veraval might include two quite different controllers. The first runs a drilling and tapping SPM: an RX8U drives the feed axes by pulses, reads part-present and clamp sensors, and an HMI lets the setter choose the part programme. The second runs a test rig at the end of the line: a PLC with analogue inputs reads oil pressure, temperature and speed, compares them with limits, and passes or rejects the unit while an HMI or SCADA PC stores the results. Seeing which of these two jobs your system is closer to is the quickest way to the right controller.

Common PLC Selection Mistakes to Avoid

Buying a PLC with exactly today's I/O count and no room for an added sensor or station.
Running out of high-speed pulse outputs when an extra axis is added.
Ignoring the protocol the drives and HMI on the machine already use.
Choosing a brand the end customer's maintenance team cannot support.

What to Send for a PLC Quote

A list of inputs and outputs, split into digital and analogue
How many axes move, and on what drives
Networks needed: Modbus, Ethernet or EtherCAT
HMI or SCADA needs
Brand preference, whether you need a built panel, and the quantity

Why Rajkot OEMs Choose RB Automation for PLCs

Holding both an authorised Schneider Electric partnership and a Rtelligent technical partnership lets us offer Modicon where the end user insists on it and an economical Rtelligent PLC where the OEM has a free hand. We are based in Ahmedabad, within Gujarat, and support Rajkot customers remotely. See every product family on the industrial automation supplier in Rajkot page.

Conclusion

An SPM, a pump test rig and a foundry utility panel each need a different PLC. Tell RB Automation the I/O count, motion axes and networks involved, and we will suggest a controller that suits your Rajkot project.

Looking for a quote in Rajkot? Contact RB Automation at +91 8511104864, WhatsApp +91 9898739737 or email contact@rbautomate.com. We call back Monday to Saturday, 10:00 am to 6:00 pm.

More Buying Guides for Rajkot

Frequently Asked Questions

Which PLCs do you supply to Rajkot?

We supply Schneider Electric Modicon controllers as an authorised partner, Rtelligent RX3U, RX8U and RM500 PLCs, remote I/O, the REC1 EtherCAT coupler and MX3G PLC-HMI combo units, from our base in Ahmedabad.

Which PLC suits a special purpose machine with stepper or servo axes?

For a few axes, a pulse-type PLC such as the RX3U or RX8U works well. For many axes or synchronised motion, the RM500 EtherCAT controller is a better fit. Share the axis count and I/O list and we will suggest one.

Which PLC should I use for a pump test rig?

A test rig needs analogue inputs for pressure, flow and speed signals and a way to log results, usually through an HMI or SCADA. Send the signal list and we will recommend a Schneider or Rtelligent PLC.

Do you build PLC control panels for Rajkot customers?

Yes. RB Automation builds PLC control panels and customised automation solutions and supplies the drives, HMIs and sensors that go with them. Share the machine or process details to start.

What is the price of a PLC in Rajkot?

There is no fixed price list. The price depends on the brand, I/O count, communication, expansion modules and quantity. Use the form on this page, call +91 8511104864 or email contact@rbautomate.com for a quotation.

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