DOTECH EVC10B-T-00 Manual do utilizador - Página 5

Procurar online ou descarregar pdf Manual do utilizador para Controlador DOTECH EVC10B-T-00. DOTECH EVC10B-T-00 8 páginas. Electronic expansion valve controller

Imprimir página
DOTECH EVC10B-T-00 Manual do utilizador
: Setting 1 group table (Menu 1 =
Address
Description
4 0001
Superheat set-point
4 0003
Start open ratio
4 0004
Start open ration duration time
4 0005
P: Proportional gain
4 0006
I:Integral time
4 0007
D:Derivative time
4 0008
Low superheat alarm mode
4 0009
Detect low superheat alarm
4 0010
Low superheat alarm delay time
4 0011
Clear low superheat alarm
4 0012
Maximum operating pressure alarm mode (MOP)
4 0013
MOP
alarm detection pressure
4 0014
MOP
alarm detection delay time
4 0015
Clear MOP alarm
4 0016
High superheat alarm mode
4 0017
Detect high superheat alarm
4 0018
High superheat alarm delay time
4 0019
Clear high superheat alarm
4 0021
Freeze prevention alarm mode
4 0022
Detect freeze prevention alarm
4 0023
Freezing protection alarm delay time
4 0024
Clear freeze prevention alarm
4 0025
Select pumpdown function and delay time
4 0026
Pressure set-point for stopping pumpdown
4 0027
Pressure low limit alarm mode
4 0028
Detect low limit pressure alarm
4 0029
Low limit pressure alarm delay time
4 0030
Clear low limit pressure alarm
※1 Start open ration and start open ratio duration time
If Run switch is turned on, valve will be opened by start open ratio. After that maintain it during
start open ratio duration time and start to control. (Input optimum value as a start open ratio)
※2 Setup of proportional gain
In the majority of cases, use the result of auto tuning. Extra changes are unnecessary.
Proportional gain makes a decision on control input of valve open ratio
according to superheat change. If proportional gain is 3.0%, control input of
valve open ratio is 3.0% per 1.0K of superheat.
If change of valve open ratio is fickle, decrease proportional gain.
If change of valve open ratio is slow, increase proportional gain more.
Open ratio of valve [%] = Start open ratio + (Proportional gain X Tolerance)
※3 Setup of integral time and derivative time
In the majority of cases, use the result of auto tuning. Extra changes are unnecessary.
Integral time: Input time which is applied to control for accumulated volume of tolerance.
Derivative time: It is for controlling momentary reacting volume for tolerance
If vibration time is longer than integral time,
1. Integral time increases 1.5 times of vibration time.
2. Wait until system is stable.
3. If vibration is lasting, decrease integral time 30%.
4. Wait until system is stable
5. Repeat 3 and 4 until vibration is removed.
If vibration time is shorter than integral time
1. Decrease proportional gain 30%.
2. Wait until system is stable
3. Repeat 1 and 2 until vibration is removed
1.PR
)
Code
SH
BIR
SDT
DFR
I RT
DRT
LS
LSH
LSD
LSF
MP
MOP
MPD
MPF
HS
HSH
HSD
HSF
FR
FRE
FRD
FRF
PD
PDP
LP
LOP
LPD
LPF
Unit
Step
K
0.1
%
1
Sec.
1
%
0.1
Sec.
1
Sec.
1
0=No use
1=automatic return
K
0.1
Sec.
1
K
0.1
0=No use
1=automatic return
bar
0.1
Min.
1
bar
0.1
0=No use
1=automatic return
K
1
Sec.
1
K
0.1
0=No use
1=automatic return
℃
1
Sec.
1
℃
1
Sec.
1
bar
0.1
0=No use
1=automatic return
bar
0.1
Sec.
1
bar
0.1
※4 Detect low superheat alarm
This alarm is caused by superheat is low. Once superheat begins to low, expansion valve start
to close more. If low superheat alarm is occurred, expansion valve is fully closed.
※5 Maximum operating pressure alarm mode
Once maximum operating pressure alarm is occurred, expansion valve is fully closed.
※6 Detect high superheat alarm
This alarm is caused by superheat is high. Once superheat begins to high, expansion valve
start to open more. If high superheat alarm is occurred, expansion valve is fully closed.
※7 Detect freezing protection alarm
If freezing protection alarm is occurred caused by temperature of evaporator is getting low,
expansion valve is fully closed
※8 Pumpdown function
If input pumpdown delay time of 0 to 180 sec, auxiliary relay (RL1) outputs it
as compressor control purpose.
Run switch turns on, RL1 start to run
Run switch turns off, RL1 will be turned off. (Less than pumpdown finish pressure)
※9 Detect low limit pressure alarm
If pressure is dropping up to less than LOP for more than LPD, low limit pressure alarm will
be occurred and expansion valve is fully closed.
-5-
Min.
Max.
Default
0.5
30
0
100
0
300
0.1
99.9
0
999
0
999
2= manual return
0.5
30.0
1
300
1.0
30.5
2= manual return
-1
50
1
15
-1
50
2= manual return
10
40
1
600
7
37
2= manual return
-40
40
5
200
-37
43
OFF(-1)
0
180
-0.5
18.0
2= manual return
-0.8
17.7
5
200
-0.5
18.0
Custom
6.0
0
0
3.0
120
30
1
0.5
15
3.0
1
9.0
1
8.0
0
30
3
27
0
0
30
3
0.5
0
0.0
5
0.3
EVC10B R20140821