Variable Connection Methods - GE AV-300i User Manual

1.1.1 Variable Connection Methods

The source allows you to assign the signal for the input Block.
Thanks to a predefined list, pick-list, the user can select the signal origin by connecting it to the input Block.
The signal selected will be assigned to the source. This signal controls the Block Function and is therefore defined
as a control signal. The signals come from different points of the control system.
The connection points can derive from:
1 - Physical terminal board
2 - Analog and digital signals
3 - Drive internal variables using
The control signal is always connected on the Source of each Block. The state of this signal depends on the
Block Function.
For example:
Terminal input
Ramp ref 1 src
NULL
Ramp ref inv src
N !
OTE
AI 1 alt sel src source allows you to select the signal to enable an alternative output reference.
AI 1 alt value parameter determines the value of the alternative output reference.
Ramp ref inv src allows you to select the signal for inverting the final output setpoint.
Ch.1
18
analog and digital signals from the drive terminal strip and from the
EXP expansion cards.
from DGFC option cards, Field Bus, keypad.
keypad or toolbox.
- the Ramp Setpoint Block which generates the ramp reference, defaults Ramp ref 1 src
source from the Analog input 1 output signal (the Block output on the analog Input 1). This
signal is in the pick-list of the Ramp ref 1 src, and can be changed. For example Int ramp ref
1 (Ramp setpoint block internal value).
- the analog Input Block, connects on its Ai 1 sgn src Source (which inverts the output
reference signal) the NULL signal. If the user wants to enable the specific function, he has
to make a selection inside the pick-list of the Ai 1 sgn src (for example ONE, Digital Input
1, etc.).
Analog input 1 Block
NULL
NULL
Ramp Setpoint Block
—————— Function Description ——————
GEH-6641E
* -1
* +1
Al 1 sgn src
+1
-1
An inp 1 output
AI 1 alt value
Al 1 alt sel src
Ramp setpoint