Contactor 9A and M-Duino Industrial Arduino PLC

Example of use and application on how to control and industrial motor
April 3, 2019 by
Serzh Ohanyan

Introduction

In this post, we will show you an example of how to control a Motor with the Contactor 9A and one of our industrial Arduino controllers. You need to use a PLC with a relay output, so it's necessary to use our PLC Arduino Ardbox 20 I/Os RELAY HF or any of our M-Duino boards with a RELAY output.

Considering that we need to process a huge amount of data we will use an M-Duino controller since it has a faster processor than Ardbox (M-Duino are implemented with Mega, Ardbox with Leonardo) and an SD card to store data.Â

Contactor 9A

Specifications:

 (Ue) Rated Operating Voltage <= 300 V CC<= 690 V AC 25...400 Hz (Ie) Rated Operating CurrentÂ 25 A (<= 60 Â°C) at Ue <= 440 V CA AC-19 A (<= 60 Â°C) at Ue <= 440 V CA AC-3 [Ith] conventional free air thermal current 25 A at <= 60 Â°C for power circuitÂ 10Â A at <= 60 Â°C for signalling circuitÂ (Ui) Rated Insulation Voltage 600 V Electrical Durability 0.6 Mcycles 25 A AC-1 at Ue <= 440 V2 Mcycles 9 A AC-3 at Ue <= 440 V (Uc) Control Circuit Voltage 24 V DC Mechanical Durability 30 Mcycles [Uimp] rated impulse withstand voltage 6 kV conforming to IEC 60947 Overvoltage category III [Icw] rated short-time withstand current 105 A <= 40 Â°C 10 s power circuit 210 A <= 40 Â°C 1 s power circuit 30 A <= 40 Â°C 10 min power circuit 61 A <= 40 Â°C 1 min power circuit 100 A 1 s signalling circuit 120 A 500 ms signalling circuit 140 A 100 ms signalling circuit Average impedance 2.5 mOhm at 50 Hz - Ith 25 A for power circuit Power dissipation per pole 0.2 W AC-3 1.56 W AC-1 Control circuit voltage limits 0.1...0.3 Uc drop-out at 60 Â°C, DC 0.8...1.25 Uc operational at 60 Â°C, DC Time constant 40 ms Signalling circuit frequency 25...400 Hz Minimum switching voltage/current 17 V / 5 mA for signalling circuit Height 77 mm Depth 95 mm Width 45 mm Weight 0,48 kg

ExampleAs you can see in the image below, we connect the M-Duino controller to Vds at 24 V. Connect L1, L2 and L3 to the Three-phase Electrical Supply. Connect T1, T2, T3 to the Three-phase Motor. Finally, connecting a RELAY R.X (X = 1..8) output from the Arduino PLC to the Contactor 9A input +A1 and -A2 to the ground, we are able to enable and disable the three-phase Motor by a 24 V signal.

Â

Â

Â

Â

Raspberry PiIndustrial PLC

â€‹Search in our Blog

Serzh Ohanyan April 3, 2019