< Obsolete- replaced with EPM...
< Obsolete- replaced with EPM 688-V2.0 >
The EPM688-5 is an Electro Permanent Magnet, combining the advantages of electro and permanent magnets. This Device comes with integrated electronics that can be operated with 3.3 and 5V TTL signals and uses 5V Vcc. It can hold up to 8kg.
This product is no longer in stock
EPM688-5, EPM688-5-S, V1.0X, V1.2
The EPM688-5 and EPM688-5-S are Electro Permanent Magnets, combining the advantages of electro and permanent magnets. This Device comes with integrated electronics that can be operated with 3.3 and 5V TTL signals and uses 5V Vcc.
|Vcc min||Power supply Voltage||5||V|
|Vcc min V1.2||Power supply Voltage min||3.3||V|
|Vcc max||Power supply Voltage max||6||V|
|Imax||Maximum Supply Current||1.5||A|
|Vsig low||Maximum low signal Voltage 1?||2.2||V|
|Vsig high||Minimum high signal Voltage 1?||2.8||V|
|Vsig max||Maximum signal Voltage||5||V|
|Tmax||Maximum Temperature 2?||50||deg C|
|Fmax||Max holding force||80||N|
1? Vsig is undefined between 2.2 and 2.8V. Operating the signals this area may cause premature turn off of the IGBT under high current conditions causing permanent damage. Oscillation on either the Vsig Vcc may cause rapid turn off and on of the IGBT. This can be avoided by using a clean power supply. http://www.nxp.com/documents/data_sheet/74HC_HCT32.pdf 4HC_HCT32.pdf] should be consulted. This is not a problem with V1.2 which will not suffer damage from noise.
2? Without electrolyte capacitor 80 deg C
5V supply <100mV ripple
Pulling this pin high (it has a 1 kohm pull down) causes the magnet to go in the off state if the capacitor is charged, the discharge will automatically stop in 300uS even if kept high. Holding this pin high for 3s charges the capacitor to full and is ready for the next cycle. The relative high self discharge rate of the capacitor should be taken into account, recommended time is <10s.
Same as S_off
Breakout of the 6 contact points for use for electrical contact. The 6 individual metal contacts on the bottom are broken out so one may solder a connector to the board. This is intended to be used with a recharge station.
The EPM688-5 is designed to hold securely a cargo of 1kg and switch on and off effectively with low power consumption. 800mA at 5V for 3S or 3.4J per cycle.
Under the capacitor discharge condition pull either S_on or S_off high >2.8V for 3 seconds and then low. The capacitor is fully charged and the device is ready to cycle. Pulling either S_on or S_off high causes the magnetic field to move either in the on or off state. Care should be taken that the S_on or S_off are set high for no less then 500uS otherwise IGBT turn off under high current condition can cause damage. Pulling S_on or S_off low after >500uS have expired causes the driver to charge the capacitor, automatically stopping once 330V is reached in about 3s.