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Author Topic: Forward-Reverse Wye-Delta Motor Control Circuit...  (Read 23924 times)

Offline fherdzpowerhaus

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #40 on: September 11, 2009, 05:03:31 PM »
All of them has the same capacity for both magnetic contactor, should be in one the same rating for forward, reverse and delta (ampere rating for each contactor that i mention).
and all line side are in the top of each contactor in forward, reverse and delta should be the same and all load side are in below of four magnetic contactor in forward, reverse, delta and wye. (Philippine Electrical Code).

Can you draw the schematic diagram to share in other electrical practitioners..



pwede rin dalawang contactor lang....+ isang 3PDT na switch for the reversal.

or ito below para sa 4 na contactor mas malinaw na drawing madaling masusundan yan ng electrician.
 

BTW un title ang tanong control circuit pero sa body ng post ang tanong power/motor circuit. need pa ba control circuit?

cheers.
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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #40 on: September 11, 2009, 05:03:31 PM »

Offline fherdzpowerhaus

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #41 on: September 11, 2009, 05:12:21 PM »
(Philippine Electrical Code) should be use four magnetic contactor in Forward-Reverse Wye-Delta connection... This is the design to use in Manufacturing Company are almost the same in other country.
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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #41 on: September 11, 2009, 05:12:21 PM »

Offline fherdzpowerhaus

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #42 on: September 11, 2009, 05:16:10 PM »
Crusher Machine has an optional sequence to use Forward rotation and Reverse rotation...
60hp or larger than these motor are using gear box to reduce the speed, any induction motor more than 60hp or above to used in crusher machine with gear box to reduce the speed.
for example in marble plant are using this sequence reversible rotation design (forward-reverse wye-delta connection)
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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #42 on: September 11, 2009, 05:16:10 PM »

Offline fherdzpowerhaus

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #43 on: September 11, 2009, 05:19:16 PM »
VFD are very expensive compare to four magnetic contactor,..
(forward-reverse wye-delta connection)
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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #43 on: September 11, 2009, 05:19:16 PM »

Offline ネ㑟㑯㑠

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #44 on: September 11, 2009, 11:07:52 PM »
@ Coolet


Importante pala yong sinabi nyo na hindi dapat rekta yong L3, delikado nga pala madale ng time lag during change-over.

 Ito binago ko para sa iyo....  ;)


                


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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #44 on: September 11, 2009, 11:07:52 PM »

Offline Mayalin22

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #45 on: September 12, 2009, 01:04:31 AM »
@ Coolet


Importante pala yong sinabi nyo na hindi dapat rekta yong L3, delikado nga pala madale ng time lag during change-over.

 Ito binago ko para sa iyo....  ;)


                



safety first diba sister...  ;) ang coolet ba?  ;D ;D ;D

gawan ko sana ng control circuit kaso baka tumaas pa presyo he he he  :D
Simpler designs are usually better.

Offline ネ㑟㑯㑠

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #46 on: September 12, 2009, 08:19:52 PM »
safety first diba sister...  ;) ang coolet ba?  ;D ;D ;D

gawan ko sana ng control circuit kaso baka tumaas pa presyo he he he  :D

 ;D

gawan nyo sis...pang past time lang  ;D

Offline alaktrician

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #47 on: September 13, 2009, 12:23:42 AM »
All of them has the same capacity for both magnetic contactor, should be in one the same rating for forward, reverse and delta (ampere rating for each contactor that i mention).
and all line side are in the top of each contactor in forward, reverse and delta should be the same and all load side are in below of four magnetic contactor in forward, reverse, delta and wye. (Philippine Electrical Code).

Can you draw the schematic diagram to share in other electrical practitioners..




konting revision na lang from my 1st drawing for ur new rquirement na dapat pareho size ng 3 contacotr to minimum size possible. analyze it makukuha mo rin yan. magkano ba contrata nyan? :) ibigay ko sau drawing kung di mo pa nakuha..ang LAGAY ba naman ehh..ganun ganun na lang?? heheh joke.

Offline ネ㑟㑯㑠

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #48 on: September 13, 2009, 02:13:53 AM »
^ sa tingin ko sister foreigner yang nagpapagawa sa iyo ....

Offline fherdzpowerhaus

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #49 on: September 15, 2009, 07:32:03 AM »
simple lang nmn yata application nayan, kelangan lang  stop ang motor before reversing para controlled un starting torque during reversal, kasi kung hindi baka may trippings. pede nga din isa lang contactor nyan.. but then use VFD with it  mas madali may option un forward reverse and it will take care of your motor starting better than wye delta.

To stop the wye-delta motor during rotations, you need a clutch break (electromagnetic break) and the connection are direct to normally close of forward/reverse magnetic contactor, clucth break are recommended not the timer itself or delay contact is not applicable, depends of the size of induction motor or the capacity (torque) in full load. the function of this electromagnetic break are in operation during to stop the wye-delta induction motor,the safetiest device to connect in the rear side of single shaft or at the back of pulley,everytime you start the motor the break are release because this is connected in normally close of forward/reverse contactor for example one line in forward contactor and the other line in the reverse contactor normally close, To activate the wye-delta motor (to start again) the clutch break or electromagnetic break are open and if you stop the induction motor the clutch break or electromagnetic break are activate,that's all.. timers are not allowed to sequence in stop position because of some delay in emergency situations.

any suggestions?...
by the way thank you to all of your comments, suggestions and analysis...
this is a very nice topic to share in other electrical practioners,
if you want to share some illustration of schematic diagram please send it here or in my E-mail: :D

fherdz26@gmail.com

more power to all members...[/b]
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Offline ネ㑟㑯㑠

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #50 on: September 15, 2009, 11:22:11 AM »
@Fherdz
 
What do you mean by a clutch brake in the shafting, is it more like a car disc brake but electromagnetic activated ?!

Offline Mayalin22

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #51 on: September 15, 2009, 01:03:22 PM »
brake lang ang kailangan wala ng clutch. walang pinagkaiba sa motorized hoist.
Simpler designs are usually better.

Offline Warstg_20

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #52 on: September 15, 2009, 06:27:35 PM »
brake lang ang kailangan wala ng clutch. walang pinagkaiba sa motorized hoist.

hehehehehehehe
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Offline Mayalin22

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #53 on: September 15, 2009, 10:09:09 PM »
^  ??? ::)


@Fherdz
 
What do you mean by a clutch brake in the shafting, is it more like a car disc brake but electromagnetic activated ?!


ganito yon sis nakakabit sa shafting ng motor tapos yung body nakakabit sa body ng motor... pag me kasamang clutch ang brake then continues run ang motor... saka lang aandar ang load pag na-energize ang clutch. bale electromagnetic nga yan sis.
Simpler designs are usually better.

Offline ネ㑟㑯㑠

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #54 on: September 16, 2009, 08:32:47 PM »
thanks c0♂Lėt! ganyan pala yan....

Offline fherdzpowerhaus

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #55 on: September 21, 2009, 12:34:34 PM »
thanks c0♂Lėt! ganyan pala yan....
This is the exactly what i said before, the real figure of clutch brake (electro-magnetic brake) by the way, thank you cOoLet...so now we have a complete detail for this motor control of Forward-Reverse Wye-Delta connection and the safety to Stop the Rotation of this unit either clockwise or counter-clockwise, As additional there is a only one timer for sequence in Wye-Delta operation in this motor control,take note: only one timer... the given four magnetic contactor and push button switch for stop and start, this switch is momentary contact if ever the voltage is fluctuation or under voltage protection is arise the motor control will be stop or de-energized the circuit for protection just in case the power failure will be automatic energized by electric power,the under voltage release is the maintaining contact that not recommended in this wye-delta operation because some problem in operation or accident in the machine especially for those operator and maintenance, this switch is maintaining contact like selector or snap switch direct line in the circuit different in the other one momentary contact push button switch in case.

if you want additional pilot light for operation, the motor control design is recommended to use red colour for STOP, green colour for Operation and orange for sequence in Wye connection into Delta connection, phase voltage is also acceptable in operation for this motor control as auxilliary, Voltmeter, Currentmeter and most especially the overload relay for safety in your induction motor more than a million price together with gearbox in the single shaft of your unit, that's all...
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Offline fherdzpowerhaus

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #56 on: September 21, 2009, 12:41:11 PM »
Do you have any idea for schematic diagram for the operation of Forward-Reverse Wye-Delta motor control circuit...the power diagram is also there now but the motor control are not yet, to all Electrical Practitioner analyst the schematic diagram of this logic control sequence Forward-Reverse Wye-Delta motor control circuit.
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Offline ネ㑟㑯㑠

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #57 on: September 21, 2009, 01:05:02 PM »
 ^ The block diagram of the controls first then the schematics.

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #58 on: September 21, 2009, 01:47:11 PM »
gusto ko bumili nang ac servo motor wye delta din. 200volts. then interface ko sa pic. balak ko gumawa nang servo amplifier ko. trip trip lang. yung diagram sa taas ganun din ba gagagawin ko with the h-bridges?

Offline fherdzpowerhaus

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Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #59 on: September 21, 2009, 03:33:03 PM »
^ The block diagram of the controls first then the schematics.
Yes! like this a coil sequence in motor control...

Forward Rotation: Switch ON to Forward Wye-Delta

Forward Contactor- IN
Timer-IN
Wye Contactor-IN
Pilot Light (stop) red colour-OUT

Pilot Light orange colour, on-going start to energized when the Wye contactor is- IN
after a few seconds...

Wye contactor-OUT
Pilot Light (operation) green colour- IN
Pilot Light orange colour- OUT
Delta contactor- IN

and the timer is also- OUT...

because the timer is very expensive and to avoid in to much staying energized during operation in hours, most especially if the motor control is 24 hours operated or a day in productions. This is the secret of motor control... the timer is only used for sequence in split seconds or using for time delay-off and time delay-on like OMRON the very expensive timer in Industrial devices.

To stop the operation: Switch OFF to Forward Wye-Delta

The (Electro-magnetic) Clutch Brake will be energized to stop the Operation, Connected in Single Shaft at the rear of Induction Motor like my given 60hp 440volts 60hz 1800rpm.

that's all...
Additional information, comment and suggestion will be appreciated.
send an E-mail to: fherdz26@gmail.com





A brilliant mind is useless without a humble heart because in our lives, challenges we make an impression with what we say but we make our name with what we do...

Philippine Electronics Forum

Re: Forward-Reverse Wye-Delta Motor Control Circuit...
« Reply #59 on: September 21, 2009, 03:33:03 PM »

 

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