GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 299)

DV-300 Adjustable Speed Drives
——— FUNCTION DESCRIPTION ———
6
171
6.16.3.11 Generic pID
Drive settings: (here below are reported only the ones concering the PID function)
Input/output
Set Analog input 1 as input of the variable which has to be regulated (Feed-back).
Analog input 1 / Select input 1= PID Feed-back
Set Analog input 2 as input of the offset signal (PID offset 0).
Analog input 2 / Select input 2 / PID offset 0
Set Digital input 1 as input for the enabling of the PI block of the PID
Digital input 1 = Enable PI PID
Set Digital input 2 as input for the enabling of the PD block of the PID
Digital input 2 = Enable PD PID
parameters
In case it necessary to use the regulator as “Generic PID”, independent from the feed-forward function, the
parameter Feed-fwd PID must be set at its maximum value. In order to do this it is necessary to go through a
PAD parameter.
Set PID source come PAD 0.
On PID source it must be set the parameter number which has to be associated, choosing it from the list of the
section 10.4. “List of high priority parameters” (PAD 0 has the decimal number 503).
To obtain the value, it must be added to the decimal value 8192 (fixed offset):
PID source = (8192 + 503) = 8695
Set PAD 0 = 10000
(The parameter PAD 0 is situated in the menu’ “Special Function”).
n
ote
: Setting PAD 0 = -10000, the output regulator polarity will be overturned.
Set PID source Gain = 1
Set PID target with the parameter number that has to be addressed to the output regulator.
To obtain the value it must be added the decimal value 8192.
The parameters that can be addressed are the ones described in the list of the section 10.4. “List of high priority
parameters”.
Set PID out scale according to the parameter to which the regulator output has been addressed.
From the section 10.4. “List of high priority parameters” comes out that:
The parameters concerning the speed are expressed as [SPD].
For all the drive sizes, the rated current will be 2000 [CURR], so:
PID out scale = 2000/ max. output PID = 2000/ 10000 = 0.2