US drives PHOENIX EX, Instruction Manual, Page: 54 / 172

3-22 DRIVE PROGRAMMING
Reset command: keypad STOP/RESET key or pushbutton at TB2-7-
TB2-1.
* FWD/REV command: Keypad USER key
Speed reference source: Keypad reference M01P04
PID Control (
PID CTRL
):
Start command: Keypad RUN key.
Stop command: Keypad STOP key.
PID Reference: Analog Ref#1 at TB4-2, 0-10Vdc .
PID Feedback: Analog Ref#2 at TB4-4, 4-20MA.
* FWD/REV command: Keypad USER key.
Jog command: JOG contact at TB2-3-TB2-1.
Reset command: keypad STOP/RESET key or pushbutton at TB2-7-
TB2-1.
**For 60Hz motor speed range, scale factor = 60/1000
(60 is 60Hz and 1000 is maximum value of parameter M01P25
“PRESET FREQ 1”).
***Since the PID output in this example controls the speed, one of
the preset speed parameters M01P25 “PRESET FREQ 1”) is used as
PID output destination. If the PID is to trim speed then it is
suggested that parameter M01P15 “
REF OFFSET
” is used and set
P01M16 “
REF OFFSET SEL
” to 1.
*NOTE : Reverse function is disabled. If FWD/REV is needed set
M06B23 (DISABLE REV ROT) to 0 and M06B17 (EN KEYPAD
FWD/RV) to 1.
3.7.26 PID Additional Notes:
The following applies to the above PID setups:
In above setups PID setpoint M14P03 is analog ref #1, 0-10Vdc.
In above setups PID feedback M14P04 is analog ref #2, 4-20MA.
If a digital setpoint is desired, one can choose for example a preset
frequency parameter such as M01P26 “
PRESET FREQ
2”.
Note that M00P06 “
ACCEL RAMP
1” & M00P07 “
DECEL RAMP
1” set the
acceleration and deceleration rates of the PID output. Use M14P07
“
PID REF SLEWRATE
” to ramp the PID setpoint M14P03.
PID proportional gain M14P10, integral gain M14P11 and derivative
gain M14P12:
With an error of 100%, if M14P10 = 1.000 the output produced by
the proportional term is 100%.
With an error of 100%, if M14P11 = 1.000 the output produced by
the integral term will increase linearly by 100% every second.
With an error that is increasing by 100% per second, if M14P12 =
1.000 the output produced by the D term will be 100%.
If a minimum and a maximum are needed for the PID output, use
M14P13 “
PID HIGH LIMIT
” and M14P14 “
PID LOW LIMIT
”.
PID Input Scaling:
All variable inputs to the PID (M14P02, M14P03 & M14P04) are
automatically scaled to variables having the range ±100.0%, or 0 -
100.0% if they are unipolar.
Example: PID setpoint M14P03 is programmed as M01P26 “
PRESET
FREQ
2”.
Since M01P26 has a range

1000.0 a value entered in M01P26 of
+1000.0 is automatically scaled to +100% for M14P03 and a value of
+500.0 is automatically scaled to 50% for M14P03.
PID Output Scaling:
The output after the scale factor M14P15 is automatically scaled to
match the range of the destination parameter.
Example: motor speed range is 60Hz and PID destination is M01P25
“
PRESET FREQ
1”.
Since M01P25 has a range of

1000.0 the PID output scale M14P15
should be set to 0.060 (60/1000).
Displaying PID Setpoint & Feedback:
Use the two programmable display parameters M00P19 & M00P20.
M11P19 defines M00P19 and M11P20 defines M11P20.
M14P17 is a parameter that monitors PID reference and internally
scaled to

100%.
M14P18 is a parameter that monitors PID feedback and internally
scaled to

100%.
M11P19

M14P17 (display parameter M00P19 = M14P17)
M11P20

M14P18 (display parameter M00P20 = M14P18)
To scale M00P19:
M11P21
 1.000 (to display units in % scale = 100% x 1.000).
The scale can be changed to represent a meaningful engineering
unit.
To scale M00P20:
M11P22

1.000 (to display units in % scale = 100% x 1.000).
The scale can be changed to represent a meaningful engineering
unit.
To change text in M00P19 & M00P20:
M11P31

SETPOINT (text for M00P19)
M11P32

FEEDBACK (text for M00P20)
Note:
A user can setup M00P19 & M00P20 scale factors to mean
engineering units such as 250 PSI for range. Also a user can choose
M00P19 & M00P20 text from a selection of appropriate texts defined
in M11P31 & M11P32.