The BE-SP6A is a Stepper Driver Circuit with several options.
It runs Stand-alone, BE-SP3 driven, or uses your Micro.
BE-SP6A control Input Voltage 7 to 18 VDC ( 9VDC is best )
BE-SP6A control Input Current @ 9VDC 40-55 mA. No external loads.
BE-SP6A Power Driver Input Voltage 5 to 46 VDC
BE-SP6A Power Driver Input Current ** 4 Amps per package or 2 Amps
on 2 channels (<25W).
BE-SP6A Output VCC 5V and < 100mA (used for auxiliary circuit
runs in ½ step mode. A stepper in ½ step mode needs
400 pulses for 1 full turn.
temperature. 0c to 70c ( Open air ).
CLK Input Voltage range. 0 to 5 VDC Analog levels. Factory set at
2.5 volt crossing.
DIR Input Voltage range. 0 to 5 VDC Analog levels. Factory set at
2.5 volt crossing.
RA to RB resistor Values. 100k or higher. Below 100k may run motor
CLK Speed. 0 pulses per second to whatever the Stepper will handle.
default Clock Speed, no (RA RB) ~ 125 pulses per second = 7500/min
= 18.75 RPM
Fast Clock Speed, (RA RB =~100k) ~ 625 pulses per second = 37500/min
= 93.75 RPM
** Driver IC's ( 1 on board) will drive up to 25 watts, or up to
1 Amp continuous per channel.
Use fan and/or add Appropriate heatsink(s) when needed.
Driver Volts = 50. (Recommended Volts = 46).
One 4 channel Driver IC can drive:
2 channels with 2 Amps each or
4 channels with 1 Amp each.
Do not exceed power ratings, see load chart for more details.
SCHEMATIC AND ANALOG INFO:
(A and B) are part of an oscillator (Clock) circuit that can only
run if pin 2 has a high (5V) on it.
resistor(s) or a pot across T1-4 (RA) and T1-5 (RB) will speed up
gate B pin 6 is connected to the 191 through J1, then the stepper
will run at oscillator speed.
C pin 11 is connected to the 191 through J1, then the stepper will
move one step on each fall of the clk signal.
the J1 Jumper is on right, the output from gate B goes to the control
circuits of the Driver.
pulse moves the Stepper one Step. It will run until the CLK input
goes High (+5).
(C and D) are part of a Led drive and buffer circuit that will clean
up outside clocks.
393 comparators will clean up the Clk and Dir signals by comparing
them to known voltage levels.That gives gates C and D a nice input
signal to drive the 191 counter.
Refer to BE6A
Info sheet file on Tech Info page.
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