EPM 8 for honey extractor instructions for use. Scheme of the honey extractor rotation speed regulator
Honey extractor rotation speed regulator
This diagram is intended for beekeepers.
Once upon a time, honey extractors had only a manual drive, and extracting honey from honeycombs was quite hard physical labor (I tried it myself, I know first-hand).
With the development of electronics, it became possible to simplify and automate this work. Here is the simplest diagram of a honey extractor rotation speed regulator with a timer for several tens of seconds:
Input - powered by car battery. The output is to a 12-volt honey extractor drive motor.
The top 561LA7 chip contains a battery voltage indicator, and the bottom one contains the actual regulator with a timer. Each microcircuit is powered by its own zener diode.
The speed is controlled by changing the frequency and duration of the voltage pulses supplied to the motor. B1 is a reed switch, which is acted upon by a magnet attached to the honey extractor shaft. The power switch is relay K1, which operates in heavy duty at a fairly high switching speed. This, of course, reduces the reliability of the circuit, but I warned you - the circuit is the simplest! To increase reliability, you need to take relays from imported UPSs, usually they are black.
This circuit is not mine, but I have assembled about a dozen such devices. Usually once a season they are brought in to replace the relay (the contacts burn out). It would be better to replace the relay with something purely electronic, but not everyone gets around to it.
EPM-8 powered by a 12-volt car battery for work in field conditions, electric drive with speed controller, rotation direction switch, built-in adjustable timer, electrodynamic brake, overload protection, polarity reversal protection, accidental reverse switch, high supply voltage, automatic addition of speed, control of supply voltage. The electric drives use a 90-watt electric motor on bearings. This is a good, modern engine with a long service life and virtually no overheating during operation. However, if necessary, it can be retrofitted with an electric cooling fan. The housing of the electronic unit is specially made so that it does not block the ventilation hole in the engine, and efficient cooling can be organized. The kit includes: - an electric motor assembled with a mounting bracket, a small pulley and an electronic unit with connecting wires - a large pulley - a drive belt - one of the adapters : adapter for a pulley (belt) honey extractor or for a bevel gear honey extractor (one adapter is suitable for both types) adapter for a geared honey extractor (a cast iron closed gearbox with a handle on the side) Electric drive with software The drive supports the following functions: ⇑ Recording an “Automatic” program pumping for working on a radial or automatic honey extractor and recording a “Manual” program for working on a chordial honey extractor. Displays the selected program on the LCD screen. Recording of 8 independent programs up to 99.59 minutes each. Vibration control of the honey extractor and its shutdown in emergency mode. In the drive settings it is possible to set the emergency shutdown threshold. Visual control of the speed sensor operation. Displays the “Speed Sensor Failure” alert on the liquid crystal display in cases where the speed sensor is not installed or is damaged. Displaying the rotation speed of the honey extractor rotor on the LCD screen. Selecting a step to increase or decrease the rotation speed of the honey extractor. Battery voltage monitoring and emergency drive shutdown to prevent battery discharge. Sound confirmation of button presses and operations performed. Possibility to disable sound warning. The limit for adjusting the rotation speed of the honey extractor rotor is from 50 to 300 rpm. The drive is powered from a 12V/55A battery or a power supply 13 - 15 volts, 10 amperes PRICE: 320 rubles
240 rub.
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EPM-8 powered by a 12-volt car battery
for work in the field, an electric drive with a speed controller, a rotation direction switch, a built-in adjustable timer, an electrodynamic brake, protection against overload, against polarity reversal, against accidental reverse, against increased supply voltage, automatic addition of revolutions, control of the supply voltage.
The electric drives use a 90-watt electric motor on bearings. This is a good, modern engine with a long service life and virtually no overheating during operation. However, if necessary, it can be retrofitted with an electric cooling fan. The housing of the electronic unit is specially made so that it does not block the ventilation hole in the engine, and efficient cooling can be organized
The kit includes:
-electric motor assembled with mounting bracket, small pulley and electronic unit with connecting wires
-large pulley
-drive belt
-one of the adapters:
adapter for a pulley (belt) honey extractor or for a bevel gear honey extractor (one adapter is suitable for both types)
adapter for geared honey extractor (cast iron closed gearbox with handle on the side)
Electric drive with software
The drive supports the following functions: ⇑
Recording an “Automatic” pumping program for working on a radial or automatic honey extractor and recording a “Manual” program for working on a chordial honey extractor. Displays the selected program on the LCD screen.
Recording of 8 independent programs up to 99.59 minutes each.
Vibration control of the honey extractor and its shutdown in emergency mode. In the drive settings it is possible to set the emergency shutdown threshold.
Visual control of the speed sensor operation. Displays the “Speed Sensor Failure” alert on the liquid crystal display in cases where the speed sensor is not installed or is damaged. Displaying the rotation speed of the honey extractor rotor on the LCD screen.
Selecting a step to increase or decrease the rotation speed of the honey extractor.
Battery voltage monitoring and emergency drive shutdown to prevent battery discharge.
Sound confirmation of button presses and operations performed. Possibility to disable sound warning.
The limit for adjusting the rotation speed of the honey extractor rotor is from 50 to 300 rpm.
The drive is powered from a 12V/55A battery or a 13 - 15 volt, 10 ampere power supply
PRICE: 320 rub.
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EPM-8 - electric drive with speed controller, rotation direction switch, built-in adjustable timer, electrodynamic brake, overload protection, polarity reversal protection, accidental reverse switching, high supply voltage, automatic addition of speed, supply voltage control
Electric drives are produced with power from a 12-volt car battery, for work in field conditions, and with power from a 220-volt network, for work in stationary conditions. The mechanical part (large pulley, adapter, belt) is the same in all drives, and depends on the honey extractor on which the drive will be installed. The only difference is the motors and electronic units used, assembled together on a mounting bracket, which is attached to the honey extractor with one bolt. Therefore, by unscrewing one bolt, you can easily change one drive to another without affecting the mechanical part.
All 12-volt drives EPM-7 and EPM-8 operate without a sensor - this is much more convenient than on drives with a sensor - you don’t need to install anything and configure everything all the time, just screw the drive to the honey extractor, and it’s ready to work. However, despite the absence of a sensor, the drive regulates real speed of the honey extractor with high accuracy and stability, regardless of the supply voltage and the severity of the frames with honey. At the same time, after turning on the drive, the engine turns on at full power, which allows you to confidently start and quickly reach the set speed. After reaching the set speed, the engine is turned on periodically only to maintain the speed. It is not difficult to determine whether the drive regulates real speed or not. To do this, it is enough, after gaining speed, putting gloves on your hands, to try to brake the honey extractor using the large pulley with your hands. The engine switching frequency will increase sharply - the drive reacts to the changed load and increases power, trying to restore the set speed. As soon as you release the pulley, the engine will turn on less frequently, delivering just enough power to accurately maintain the set speed. In this way, the method is fundamentally different from the pulse-width modulation (PWM) method used in almost all drives, when the electronic unit simply regulates the voltage on the motor (like a rheostat, only through electronics) but does not in any way control the actual speed of the honey extractor. Accordingly, the honey extractor gains speed more slowly, especially at low speeds, which is why we lose time, and, after reaching the set speed, it does not limit them. The speed increases constantly, which can lead to frame failure. In my drives, the speed is maintained absolutely precisely, regardless of external factors. This method of speed control without a sensor was first used on the EPM-3 model more than 8 years ago, and the total “experience” of electric drive development exceeds 19 years. Thanks to such a wealth of experience, the best technical solutions are used in electric drives, and those that have not been tested in practice are eliminated. Over all these years, the method has been constantly improved and developed. Thus, on new models, electronics allows not only to regulate the actual speed of the honey extractor, but also to determine the load on the engine, the direction of rotation of the honey extractor, the exact moment it stops, and independently change the speed of the honey extractor at the right time. These capabilities made it possible to implement a number of additional functions that were not available to other drives. These are functions such as overload protection, reverse protection, automatic speed addition, and turning on and off the electrodynamic brake. These functions not only increase the convenience of working with the electric drive, but also greatly increase its operational reliability, especially when operated by inexperienced users.
In addition, the electronics constantly monitors the supply voltage both under load (with the engine on) and without load. Promptly warns of battery discharge or overcharging. The electronics also blocks the drive from turning on if the supply voltage is outside the permissible limits.
To turn the electric motor on and off, electric drives use a conventional automotive relay installed in a connector for self-replacement. That is, after the relay has worn out its service life (at least 5 years under the most severe use), the beekeeper can independently replace it right in the apiary within 5 minutes. This feature greatly increases the service life of the electric drive as a whole.
All electric drives use a 90-watt electric motor on bearings. This is a good, modern engine with a long service life and virtually no overheating during operation. However, if necessary, it can be retrofitted with an electric cooling fan. The housing of the electronic unit is specially made so that it does not block the ventilation hole in the engine, and efficient cooling can be organized.