BeiJer BFI-H3 - Page 19

Beijer Electronics Frequency Inverter BFI-H3 KI00363B 2019-09
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)
P2-30 Analog Input 1, AI1
0
0: 0-10 V 3: 0-20 mA
4: t 4-20 mA, trip if signal is below 3 mA
5: r 4-20 mA, ramp to Preset Speed 4, Pr2-04, if signal is below 3 mA.
P2-33 Analog Input 2, AI2
P3-01 PID Proportional Gain 1,0
(Setpoint value–Feedback value) of PID controller is multiplied by P3-01 to
produce
o
utput from
PID controller.
Too high value can cause instability
.
P3-02 PID Integral Time 1,0
Accumulated error in the PID control between (Setpoint value–Feedback value)
to
influence the output from PID controller. P3-02 is time constant. Larger values
provide a more damped response. Lower values result is a faster system response
but may result in instability. 0= Turned off
P3-03 PID Differential Time 0 0
The
Differential time constant references the rate of change of the feedback signal
over time and works to slow the rate of change of the PID controller, particularly
as it approached the set-point. Setting a shorter time will decrease overshoot but
slow
down
response and may lead to instability.
0= Turned off.
P3-04 PID Operating Mode 0
0 : Direct Operation. Increase in motor speed should increase feedback signal
1 : Inverse Operation.
I
ncrease in motor speed should decrease feedback signal
P3-05
PID Digital Reference
source
0
0 : PID-reference in P3-06
1 : Analog reference on terminal 6
P3-06 PID Digital Reference 0,0 %
PID–reference: 0-100 % of PID-feedback signal if P3-06=0
P3
-
07
PID Output Up
p
er
Limit
100 %
Maximum output frequency in % of P1-01
P3
-
08
PID Output Low Limit
0 %
Minimum output frequency in % of P1-01
P
3
-
10
PID Feedback Source
0
0
0 : Analog Input 2 (Terminal 10)
P3-11 PID Error to Enable Ramp 0 %
0: Internal ramps are always used.
0,1-100: When PID-error is less than setting internal ramps are not used and PID–
control
l
er ramps output frequency.
D
rive
can
react quickly to small errors.
Extra special PID functions
P3-12 Feedback Display Scaling 0
Scaling factor of displayed PID feedback. If analog input is 0–10 V(=0-100%)
and is equal to 0
-
10 bar pressure setting is 0,1.
P3
-
14
Standby Activation Speed
0 Hz
PID Sleep mode parameters.
P3-14 defines output frequency at which the drive will enter
standby mode (stop).
Drive enters standby mode if motor speed remains below level in P3-14 for time
period in P2
-
27.
D
isplay will show
Standby
. Function
disabled if P2
-
27=0.
P2-27
Standby Mode Enable
20 sec
P3-13 Feedback Wake Up Level 0 %
PID Wake up level. When PID error > P3-13 drive will return to normal
operat
ion.
P3
-
15
2nd PID Digital Reference
0 %
Second PID reference activated by a digital signal.
P3-16 Pump Prime Time 0 sec
≠ 0: Burst pipe protection function enabled.
If PID feedback, when starting motor, is not > P3-17 within time P3-16 the drive
will trip with "Pr
-
Lo" (pressure low trip
)
.
P3
-
17
Burst Pipe Threshold
0 %
% of PID feedback signal. See P3
-
16.
P3-19
Burst Pipe Detection Trip
Delay
0 sec
Delay/filtering false trip due to overshoot or undershoot of sensor signal. For
instance pressure shocks due to valves going on and off.
P3-18 PID Reset Control 0
0: PID loop will continue running as long as P gain (P3-01) ≠ 0.
1: PID loop will only run when drive is enabled. If drive is not running, PID
output will reset to 0 (Including integral result)
.
P
2
-
07
Boost function at start
0 Hz
Drive can be started with speed in P2-07 without PID active. When time from
start in P6-11 has elapsed the drive enters automaticall PID-control.
P
6
-
1
1
0
sec
If PID-control is to be performed by serial, Fieldbus or Ethernet, contact Beijer Electronics.