Parker AC890PX Series, Engineering Reference

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A p p e n d i x D : P r o g r a m m i n g
D-9
AC890PX AC Drive
Functional Description
The Drive has four analog inputs. There is an analog input function block for each:
AIN1 is associated with the signal on terminal X12/02
AIN2 is associated with the signal on terminal X12/03
AIN3 is associated with the signal on terminal X12/04
AIN4 is associated with the signal on terminal X12/05
Analog input 5 is a special case: terminals AIN1 and AIN2 can be used as a differential
±
10V input (which we call AIN5).
All analog inputs can be configured as a direct input into the Speed Loop providing a fast speed or torque demand for servos.
The input voltage is pre-processed and converted into a numeric value by the analog input electronics of the Drive. The analog input function blocks
further process this reading so that a value of 0.00% represents an input equal to the low input range, while a value of 100.00% represents an input
equal to the high input range.
The break detect facility may only be used in conjunction with the 4..20mA hardware range. An input break is defined as an input reading less than
0.45mA. When an input break has been detected, the VALUE output is forced to be the BREAK VALUE .
VALUE
INPUT
BREAK VALUE
INPUT LOSS LEVEL
BREAK ENABLE
BREAK
TYPE
UNPROCESSED