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35
Handling Errors and the Error Output
Pulse Output
Pulses from the Hall Sensor are processed and are then sent out
at the fault output.
Properties of the pulse output:
■
Maximum Pulse Frequency: 2000 Pulses per second
■
At speeds in excess of the maximum pulses per second the
maximum pulse frequency will be transmitted
■
The programmed number of pulses will be reached exactly.
That means you can get the right position by counting the
pulses (no drift).
■
The output pulses can exhibit a variance over time (lagtime).
■
Because the output has only one channel the direction of
rotation cannot be registered.
Command Function
Description
Example
LPN *)
Load Pulse Number
Sets pulse number with
LPN16
a range of 1 to 255
GPN
Get Pulse Number
Calls up current
GPN
number of pulses.
➔
16
ERROUT *) Error Output
Switches to Fault
ERROUT
Output Mode
ENCOUT *) Encoder Output
Switches to Pulse
ENCOUT
IOutput Mode
Example:
LPN64
➔
Sets 64 pulses per revolution
ENCOUT
➔
Sets pulse output mode
That means that at 1800 rpm: 1800/60*64 = 1920 pulses per second
At 3000 rpm: (3000/60)*64 = 3200 pulse per second. In this case,
since the maximum output pulses at the fault output is 2000, drift
will occur. Accurate positioning at pulse numbers above 2000 is not
possible.