Claims:1. A power module (4) for the power consumption of a solenoid by reducing the holding current is performed using PWM technique consists of
voltage regulator circuit, control circuit and switching circuit.
In the said PWM technique OFF period is kept longer for energy saving (23)
The said power module (4) is customized to work on polarity reversal

2. The claim as claimed in claim 1 the power saver module (4) is of the form factor as per standard DIN43650 Form A (3)(ISO 4400 / EN175301-803:2000) connector.
3. The claim as claimed in claim 1 , it is a plug play module (4)with the dimension of Form-A DIN43650 standard connector(3) and have female which can directly sit on standard Solenoid DIN connector(3)& male lugs to which the input power fed through external source.

4. The claim as claimed in claim 2, the specific form factor that allows introduction into all existing machines with absolutely no change in the electrical wiring of the existing system.

5. The claim as claimed in claim 1 , in PWM control technique the ON time(19) and OFF time period(21) is adjusted to decrease the net RMS voltage which reduces the power.

6. The claim as claimed in claim 1 ,the power module (4) controls the 12V or 24V DC(7) solenoid valves.

7. The claim as claimed in claim 1, the power module (4) provides sufficient current required to energize the solenoid coil and remains in the same state until external trigger is given.

8. The claim as claimed in claim 1, it is operated in temperature ranging from 0 degree Celsius to + 70 degree Celsius.

9. The claim as claimed in claim 3, the power module (4) has no restriction on input connection because reversible polarity is possible.

10. The claim as claimed in claim 1, the power saver module (4) reduce the heat dissipation and thereby increasing the life span of the Solenoid Coil.
, Description:[0013]The present invention briefly describes about the product and list out the specifications for power saver module (4) for solenoid. Thus the above work done could be used as input reference for hardware, ID, mechanical and software team. The product description includes the functional requirement, performance requirement and interface requirement. The other requirements such as safety, physical and maintenance are also added.
[0014]In functional requirement, the module (4) is capable of saving solenoid power consumption (23) upto 90% by reducing the holding current. The module has specific form factor asperDIN43650 Form A (3)(ISO 4400 / EN175301-803:2000) connector (figure2) and should be rugged, water & oil resistant. It controls 12V or 24V DC (7) solenoid valves. The power saver module (4) provides sufficient current to energize the coil. The module (4) remains in the same state until external trigger is given to it. The module (4) doesn’t affect the operation of solenoid valve. The user can factory program the following time and frequency. They have initial ON duration, holding frequency and holding ON time according to their requirement.
[0015]In performance requirement, the power saver module (4) consists of internal short circuit protection. The module (4) is polarity immune so that it could work in reverse polarity (both positive and negative) normally. It should be a plug- play module with the dimension of Form-A DIN43650 standard (figure 2) and have female lugs which can directly sit on standard Solenoid DIN connector (3). It might have male lugs to which the input power fed through external source. The input terminals are not sensitive to polarity. So reverse positive supply and GND is possible.
[0016]The power saver module (4) is safe and reliable. The manufacturing and installation requirements are made easy through step by step configurations given and is clearly shown in (figure5). They have robust enclosure of IP65 or above standard and it is completely sealed to avoid any dust, oil or water seepage. The size and shape of the module (4) is equivalent to any Form A DIN43650 connector (figure 2). The weight of the module (4) is not greater than 100gms. The module (4) can work in adverse environmental conditions and operate in temperature ranging from 0 degree Celsius to + 70 degree Celsius. Designing the power module (4) depends upon the percentage of power saving (17) based on the solenoid valve and its application.
[0017]The electrical (5) and mechanical characteristics (6) are shown in (figure 3) for the power module (4) for solenoids. Some of the specifications include energy saving, heat reduction, eco friendly, plug & play and interchangeable polarity.
[0018]The Power Saver Module (4) allows the input line voltage directly to the coil and the coil is energized(figure 4).After certain period, the Power Saver Module (4) automatically pulses the input voltage(1) to the coil such that the armature does not respond. By adjusting the OFF period (19) longer than the ON period(21), the net RMS Voltage decreases and hence wattage should be decreased achieving the power saving(23). The ON and OFF period is shown in figure(1).

[0019]The two main functions of the module (4) are 1) to reduce the power consumption (23) of solenoid valves by reducing the holding current significantly. 2) To reduce the heat dissipation and thereby increasing the life span of the Solenoid Coil.
[0020] The specifications and ratings (13) shown in figure (6) are used in matlab Simulink model (figure 7). Here the power consumption and the saving (17) are shown by some sample calculations which is given in (figure 8). The output waveforms for solenoid valve switching ON characteristics (19) with and without SPS (18) are shown in figure (9&10). The output waveforms for solenoid valve switching OFF characteristics with power module (21) and without power module (20) are shown in figure (11&12).The waveform for standard power consumption without Power Saver module 10 sec ON 2 sec OFF cycle (22) is shown in figure (13). And finally the power consumption (23)is achieved by reducing the holding current using Power Saver module which is shown in figure (14).