-7-
EVC10B R20140821
5.
Control mode
:
Superheat control
( DIP SW1 : OFF, DIP SW4 : OFF )
In most cases, it would aim to control superheat.
Definition
Description
Definition
Description
COMP
Compressor
Evaporator
Evaporator
EEV
Electronic expansion valve
EVC10
Electronic expansion valve
controller
T-sens
Temp. sensor of evaporator
outlet
Run
Run / Stop switch
P-sens
Suction pressure sensor of
compressor
Application parameter
Function
CODE
Min.
Max.
Default
Superheat set point
SH
0.5
30
6.0 K
Start open ratio
BIR
0
100
0 %
Start open ratio duration time
SDT
0
60
0 Sec.
P: Proportional gain
DFR
0.1
50.0
3.0 %
I:Integral time
I RT
0
999
120 Sec.
D:Derivative time
DRT
0
999
30 Sec.
:
Temperature control (Hot gas bypass)
( DIP SW1 : OFF, DIP SW4 : ON )
It will be used when controlling temperature of control object accurately by
adjusting by-pass amount of hot gas.
Definition
Description
Definition
Description
COMP
Compressor
Evaporator
Evaporator
EEV
Electronic expansion valve
EVC10
Electronic expansion valve
controller
T-sens
Temp. sensor of
evaporator outlet
Run
Run / Stop switch
TEV
Thermostatic expansion
valve
Application parameter
Function
CODE
Min.
Max.
Default
Set point for control target**
SH
-100
+100
6.0 ℃
Start open ratio
BIR
0
100
0 %
Start open ratio duration time
SDT
0
60
0 Sec.
P: Proportional gain
DFR
0.1
50.0
3.0 %
I:Integral time
I RT
0
999
120 Sec.
D:Derivative time
DRT
0
999
30 Sec.
**
Parameter will be changed and applied from superheat set point to temperature set point of
control object.
:
Drive function
( DIP SW1 : ON, DIP SW4 : ON )
※ To use drive function of expansion valve using external reference signal, change operation
mode to drive mode. At this time, it will be operated when Run should be ON. Expansion valve
will be closed immediately when turning OFF Run.
:
Manual control mode
( DIP SW1 : ON, DIP SW4 : OFF )
- Users can maintain valve open ration arbitrarily. Input it using +/- button
after setup operation mode to manual mode.
At this time all LED on the left side will be flickering.
In case of manual control mode, Run should be ON. Expansion valve will be closed immediately
when turning OFF Run
:
State Message
CODE
Description
STP
Operation stop
CAL
Expansion valve initialization
PDN
Pump down operation