Rockwell Automation 1336F PLUS II Custom Firmware Instructions - EN921 - Manual (Page 4)

4 EN921 - Variable Voltage w/ PI Power/Current Control
Note: The “Process PI” parameter group has been eliminated in this custom firmware.
Voltage PI
This group of parameters configures the Voltage PI Regulator.
[Volt Select]
This parameter specifies which input signal will be used
as the [Volt Command] reference when [Control Select] is
set to “Variable Voltage”.
Parameter Number 337
Parameter Type Read and Write
Factory Default “Volt Preset”
Units Display Drive
“Analog In 0” 0
“Analog In 1” 1
“Analog In 2” 2
“Volt Preset” 3 Refer to [Volt Preset] Value
“Adapter 1-6” 4-9
“Volt Cmd Ref” 10 Refer to [Volt Command Ref] Value
“Pre+AI0 Trim” 11 Refer to [Volt Trim%] Value
“Pre+AI1 Trim” 12
“Pre+AI2 Trim” 13
“Pre+Trim Ref” 14 Refer to [Volt Trim% Ref] Value
“Voltage PI” 15 Voltage PI Control (new selection)
[PI Config]
This parameter sets and displays the configuration for the
PI regulator.
Note: Reset Integrator (Int) is also available through a dig-
ital input.
Parameter Number 213
Parameter Type Read/Write
Factory Default 00000000
PI Reference
PI Reference
Select
pi reference
Σ
Σ
PI Config.sqrt_fdbk
PI Config.inv_error PI Config.reset_int
PI Feedback
PI Error
Process KI
s
Process KP
Integral Term = 0
PI Pos Limit
PI Neg Limit
PI Output
PI Voltage
Reference
Output Voltage
pi feedback
PI Feedback
Select
+ –1
–
+
+
PI Config.zero_clamp
Volt Incr/Decr Time
PI Enable
+4096
0
+4096
0
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Inv Error - Changes sign of PI Error
Reset Int - Holds KI at zero
Zero Clamp - Prevents bidirectional operation
Sqrt Fdbk - Uses sq. root of PI feedback value
Set Output
0 0 0 0 1 1
Preload Int 0 0 1 1 0 0
PI Enable 0 1 0 1 0 1
Diagram 1 2 3
Bypass - Set PI Output equal to PI Ref
(Refer to Diagrams on next page)