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Old 08-09-2004, 09:51 PM   #1
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Default new KEYENCE RAPIDA PRO esc

Features
Overwhelmingly low ON resistance unequaled by other models

To the higher level of the ESC's basic performance
"How can we transmit battery power directly to the motor?"
One factor to consider is the low level of ON (loss) resistance. The RAPIDA Series has achieved one half or lower ON resistance as compared to conventional competition class ESCs, even at the actual measurement value level. The basic performances required for the ESC, such as top speed, fuel efficiency, and torque, have been further improved. In addition, the A.G.C.S. further reduces noise from both hardware and software aspects, and it improves the energy efficiency phenomenally as well.

Users can make up their own favorite ESCs.
"High-impact power," "Smooth run," "Torque curve," and so on are typical expressions used to describe the features of the ESC. It is a frequency, or a cycle of ON/OFF of an electric signal corresponding to throttle openings, that decides these output characteristics. Low frequency contributes to "High-impact power," and high frequency contributes to "Smoothness." By freely changing the frequency, you can make your ESC suited to your motor, vehicle type, and running course.
In addition to the frequency change available in a maximum of 200 steps, the RAPIDA Series allows adjustment of not only forward run (driving) but also the brake and neutral brake (depending on the model). In other words, the user obtains essentially 200 kinds of ESCs on the drive side alone. Moreover, neither a personal computer nor an external input device is needed to change the settings. The RAPIDA Series is a dream ESC that helps the user find the best point while running a car in a course.
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Old 08-09-2004, 09:53 PM   #2
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i was wondering what exactly does "Ensa" (energy saving mode) do?

is there a need for a diode?

what other features does this esc have?

pls post your comments and questions here
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Old 08-09-2004, 10:10 PM   #3
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Hey,

You might want to check the "Keyence" thread that is already up. There has been discussion on that, and Paul Wynn was the first to release specs about the Rapida. I'm gonna look for a link to the thread.

-Kevin
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Old 08-09-2004, 10:11 PM   #4
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Ahh...here we go: http://www.rctech.net/forum/showthre...hlight=keyence
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Old 08-09-2004, 10:33 PM   #5
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ENSA is Keyence's version of battery regeneration. You can choose to have 100, 70 or 30%. In the Rapida manual Keyence states that 100% is the default and best setting but if you experience glitching or want less energy shunted back to your cells choose a lower value. With any setting less than 100% you will need a Schottky diode on your motor. With ENSA at 100% you must not run a Schottky or you will burn out hi speed fets.
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Old 08-09-2004, 10:53 PM   #6
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ENSA is not a feature of the 2002 extreme right?
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Old 08-09-2004, 11:38 PM   #7
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adrian m - at a 100% a doide is not required right? and as you stated that running it with a diode will burn the fets. my question is that what will happen if you run less than 100% without a diode? will it cause harm to the rapida?
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Old 08-09-2004, 11:40 PM   #8
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i remember that LRP had something similar. when you brake it kinda charges your cells right? is ensa similar? will ensa charge upon braking too or it has a diff thing for it.
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Old 08-10-2004, 12:50 AM   #9
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ENSA charges when ever you are at less than full throttle durning the speedo's off phases. Accordng the the instrcutions if you run less than 100% you must run a diode.
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Old 08-10-2004, 11:33 PM   #10
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thanks for the info !!! - one more thing!!!

can you use a reciever pack with the keyence?
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Old 08-11-2004, 06:34 AM   #11
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Yes but you must pull the red wire from the speed control's receiver plug and you will have to turn on the battery 's switch and the speed control's switch to make the car go. If you don't pull the red wire you run the risk of damaging your receiver or the speed control's voltage regulator.
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Old 08-11-2004, 08:17 PM   #12
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what drive freq settings do you have set onyour keyence?
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Old 08-11-2004, 10:13 PM   #13
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I have set my Zero Extreme 2002 with the following :

Power Limit 100%
Drive Freq 3.5 khz
Brake Freq 4 Khz
Neutral width 4%
Neutral brake 0%
Min Drv Power 0%
Min Brk pwr 0%
Compression retarder OFF

Drive freq is more of a personal prefference. If you want it with more punch, lower the frequency and vise versa if you want to be smooth but stay within the 2-5 khz range.

Hey Adrian, I need my other Zero Extreme 2002 sent in for service. Do you upgrade to Rapida if I sent it in? If you do, how much? Thanx for sending the heatsink & stickers.

Henry E.
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