gefran ADV200 Functions Description And Parameters List page 6

Practical example
The following examples illustrate the philosophies and methods with which more or less complex operations
are performed in the single "function blocks", the results of which represent the output of the block.
• Example: Changing the Speed Reference source
The main drive reference (in the default configuration) Ramp ref 1 mon (PAR: 620) is generated by the output
of the function block "Ramp setpoint Block".
Its default source is the Analog input 1 mon signal (PAR: 1500), from the output of the function block "Analog
input 1 Block", which in this case refers to analog input 1 of the signal terminal strip.
To change the reference source from the analog input to a digital reference inside the drive, the input signal
must be changed to "Ramp setpoint Block".
Enter the Ramp ref 1 src parameter (PAR: 610) and set a new reference, selecting it from among those listed
in the L_MLTREF selection list, for example Dig ramp ref 1 (PAR: 600).
• Example: Inverting the analog reference signal
To invert the "Analog input 1 Block" output signal, the value of the An inp 1 sign src parameter (PAR: 1526),
which has a default setting of Null (no operation), must be changed by selecting the source of the command
signal from among those listed in the L_DIGSEL 2 selection list, for example Digital input X mon, One (func-
tion always enabled), etc.
Terminal input
Ramp ref 1 src
Ramp ref invert src
Null
The diagrams above illustrate the internal processing philosophy of the single "function blocks" and the result of
these changes on the other interconnected "function blocks".
Note !
This section contains a brief description of the functions of the other parameters in the function blocks not included for the
changes in the example
The An inp 1 alt sel src parameter (PAR: 1528) can be used to select an alternative reference for the Analog
input 1 mon (PAR: 1500) output.
The An inp 1 alt value parameter (PAR: 1524) determines the alternative reference value for the Analog input
1 mon (PAR: 1500) output.
The Ramp ref invert src parameter (PAR: 616) can be used to select the source for the command to reverse
the "Ramp setpoint" function block output.
The output signal from the "Ramp setpoint" block is displayed in the Ramp ref 1 mon parameter (PAR: 620).
6
Analog input 1 Block
An inp 1 sign src
Null
Null
Ramp Setpoint Block
* -1
Analog input 1 mon
* +1
An inp 1 alt value
An inp 1 alt sel src
+1
Ramp ref 1 mon
-1
ADV200 • Functions description and parameters list