Delta VFD-EL-W Series, User Manual

Page: 142 / 197

Chapter 4 Parameters

VFD-EL-W
4-100
Parameter Function Setting s Default
End
user’s
master
End
user’s
slave
Note
10.00
PID Set Point
Selection
0: Disable
1: Digital keypad UP/DOWN
keys
2: Reserved
3: Reserved
4: PID set point (Pr.10.11)
0 1 1
Adjusts according
to customer’s
applications
10.01
Input Terminal for
PID Feedback
0: Positive PID feedback from
external terminal AVI
(0–10 V
DC
)
1: Negative PID feedback from
external terminal AVI
(0–10 V
DC
)
2: Positive PID feedback from
external terminal ACI
(4–20 mA)
3: Negative PID feedback from
external terminal ACI
(4–20 mA)
0 3 3

10.02
Proportional Gain
(P)
0.0–10.0 1.0 1.2 1.2
Adjusts according
to customer’s
applications

10.03 Integral Time (I)
0.00–100.00 sec.
(0.00=Disable)
1.00 0.7 0.7

10.04 Differential Time (D) 0.00–1.00 sec. 0.00 - -
10.12 PID Deviation Level 0.0–100.0% 10.0 5 5
When the
pressure feedback
is < 0.5 kg and
time > 15 sec.,
follow the settings
for Pr.10.20.
10.13
PID Deviation
Detection Time
0.1–300.0 sec. 5.0 15 15
10.18
Feedback of PID
Physical Quantity
Value
1.0–99.9 99.9 10 10
Sets the maximum
feedback of PID
physical quantity
value to be 10 kg.
10.19
PID Calculation
Mode Selection
0: Serial mode
1: Parallel mode
0 1 1
The parallel PID
calculation mode
applies for the
constant pressure
water supply
control.
10.20
Erroneous PID
Feedback Deviation
Level Action
0: Wan and keep operating
1: Warn and coast to stop
2: Warn and ramp to stop
3: Ramp to stop and restart
after Pr.10.21 delay time
0 3 3
When there is
water shortage or
unusual pressure
feedback, the
pump stops
running for 1800
sec. (30 minutes)
until the pressure
feedback is back
to normal.
10.21
Restart Delay Time
after Erroneous PID
Deviation Level
0–9999 sec. 60 1800 1800