MICROSTEP SELECTION FULLSTEP OUTPUT SIGNAL
The number of microsteps per step is selected by pins 1, 2, 3, and 4 of Connector P1. The MDM10001 has an active LOW open drain output at Connector P2, Pin 1 labeled
Table 6 shows the standard resolution values along with the associated inputs for pins FULLSTEP. This output is TRUE (active low) for the duration of the full step. A full
1, 2, 3 and 4. The standard waveforms are sinusoidal. step occurs when either Phase A or Phase B cross through zero (ie. full current in one
Resolution Steps/ Select 1 Select 2 Select 3 Select 4
Rev
2 400 0VDC 0VDC 0VDC 0VDC
4 800 Open 0VDC 0VDC 0VDC
8 1,600 0VDC Open 0VDC 0VDC
16 3,200 Open Open 0VDC 0VDC
32 6,400 0VDC 0VDC Open 0VDC
64 12,800 Open 0VDC Open 0VDC
128 25,600 0VDC Open Open 0VDC
256 51,200 Open Open Open 0VDC
5 1,000 0VDC 0VDC 0VDC Open
10 2,000 Open 0VDC 0VDC Open
25 5,000 0VDC Open 0VDC Open
50 10,000 Open Open 0VDC Open
125 25,000 0VDC 0VDC Open Open
250 50,000 Open 0VDC Open Open
winding and 0 current in the other winding). This full step position is a common
position no matter what resolution is selected.
This output can be used to count the number of mechanical full steps the motor has
traveled without having to count the number of microsteps in between. A controller
that utilizes this output can greatly reduce its position tracking overhead and thus
substantially increase its throughput.
This high speed MOSFET output is non-isolated and has the ability to sustain the
maximum driver voltage. It is capable of sinking up to 25mA.
OPTICALLY ISOLATED INPUTS
The following inputs to the MDM10001 are Optically Isolated.
Item Pin #
Select 1-4
Clock 6
Direction 7
Reset 8
On/Off 9
Current Reduction 10
WARNING! If using a voltage other than +5VDC, the current through the
optocoupler must NOT exceed the maximum limit.
The Isolated inputs may be powered by a DC voltage other than +5 VDC. In doing so,
care should be taken to limit this current, an external resistor should be placed in series
with the input pins (1-4, 6-10). The value of the resistor should be calculated such that
the input current is approximately equal to the value listed in the Electrical
Specifications in Table 3.
(11 páginas)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentários a estes Manuais