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CHAPTER 7 – Programmation
SMT-BD2/m
4.7
-
PROGRAMMABLE
INPUTS
Start condition
The possible effect of the 8 logic inputs can be selected as follows:
• ignore the input status,
• trigger on positive level (input activated),
• trigger on negative level (input desactivated).
The inputs can be used either as a sequence start condition or as a sequence stop
condition.
When
Stop
is desactivated, the logic inputs are used as a sequence start
condition for any sequence type. The
Stop
selection allows to use the logic inputs as a
sequence stop condition. A sequence stop condition is only valid for a SPEED or
TORQUE sequence when the delay time value is higher than 1600 ms.
NOTE :
The programmable inputs configurated for the sequence selection cannot be used for a starting condition
see section 3.1 of this chapter
: configuration of the programmable I/Os).
5 - PROGRAMME EXECUTION
The execution of a sequence can be made:
- via the START logic input: this input triggers the execution of the sequence number defined by inputs IN1
to IN7 (in natural binary code),
- via the serial link. The PC software allows the execution of any sequence number.
NOTE :
A sequence execution requires the
OK
output to be active.
6 - SPEED AND TORQUE LIMITATION
The sequence speed values can be reduced according to the analog input voltage value on pin 17 of the X4
connector. This functionality can be enabled or disabled by the selection of the
Analog input limitation
parameter. For the TORQUE, SPEED and positioning sequences (ABSOLUTE or RELATIVE), the programmed
speed can be continuously modified according to the analog input voltage value if
speed modulation
is selected.
For the HOME sequence, the programmed speed is limited during the entire sequence execution according to the
analog input voltage value at the sequence start. The speed reduction can be proportional or inversely
proportional to the analog input value according to the
reverse limitation
parameter.
The torque set point value programmed in the torque control sequences can be reduced according to the analog
input voltage value on pin 3 of the X4 connector. This functionality is only valid during the torque sequences
execution. The programmed current limit in % of the amplifier
Maximum current
value can be continuously
modified according to the analog input voltage value (torque modulation). The current reduction is inversely
proportional to the analog input voltage value (for 0 V, the full programmed current limit value is available and for
5 V the current limit is half of the programmed value).
