DOTECH EVC10B Series User manual

-1- EVC10B R20140821
Electronic Expansion Valve Controller
※ Cautions
1. This product may cause an electric shock in handling. Please do not attempt to open it with power turned on.
2. This product should be installed in a place fixed secured by a rack or panel.
3. This product can be used under the following environmental condition.
① Indoor ②Pollution Degree 2 ③At an altitude of 2000m or below
4. Power input must be within the designated ranges.
5. To turn on or turn off power supply for this product, please the circuit breaker or switch of a standard product of
IEC 60947-1 or IEC 60947-3 product and install it within a close distance allowing convenient operation by user.
6. Please be understood that if this product is dismantled or modified discretionary, after sales service will not be able to be
provided.
7. An output wire to be used for this product should be inflammable grade FV1 (V-1 grade or above), the thickness of
the wire should be AWG No. 20 or above(0.50mm
2
).
8. In order to prevent it from an inductive noise, please maintain the high-voltage wire and power wire separated.
9. Please avoid installing the product in a place where a strong magnetism, noise, severe vibration and impact exist.
10. When extending the sensor wire, use a shield wire and do not extend it unnecessary long.
11. The sensor wire and signal wire should be away from the power and load wires using conduits separately installed.
12. Please avoid using the product near a device generating strong high frequency noise (high-frequency welding machine,
high-frequency sewing machine, high-frequency radiotelegraph, high capacity SCR controller)
13. Product’s damages other than those described in the guarantee conditions provided by the manufacturer shall not be
responsible by us.
14. If this unit is used to control machineries (Medical equipment, vehicle, train, airplane, combustion apparatus, entertainment,
processing and transportation equipment, elevator and various safety device etc.) enabling to effect on human or property,
it is required to install fail-safe device.
※ The Aforementioned precautions must be observed, and if you fail to do so, it may cause a product’s breakdown.
※ The specifications, dimensions, and etc. are subject to change for enhancement without a prior notice.
EVC10B Series
USERS MANUAL
DOTECH INC.
6F, JOONGANG-ILBO B/D, 30, Dongsan-ro, Danwon-gu,
Ansan-si, Gyeonggi-do, KOREA
www.dotech21.com
1. Summary
※ Features
- The most advanced algorithm of precise adaptive PID control over superheat
- Various valve open control modes: External signal input(4-20mA, 1-5V)
RS485 communication, User setup
- Quick-Safe to ensure prevention of low and high superheats and protect the
system under any conditions
- Hot gas bypass operation for precise control
- Compatible with various refrigerants
(R22, R134a, R404a, R407c, R410a, R717, R23)
- Smart-rail mount design
- Perfect tech support by a developer (DOTECH)
EVC10B was developed 100% by Dotech's own creative ideas and
technologies.
: Basic specifications
Items Description
Dimension 72(W)mm X 114(H)mm X 29(D)mm
Power supply 24 Vac +10%/ -15% , 50 / 60 Hz & 24 Vdc
Power consumption MAX 4W at 24 Vdc
Display FND, LED
Connection Connector : SXH-0011-P0.6 (HOUSING : XHP)
Input
1P Press. sensor input
1P temp. sensor input
1P Digital input
Output 1P relay output (250 Vac / 30 Vdc / 5 A)
1P EEV(Unipolar) output
Operation Temp. – 10 ~ 50 ℃, Humidity 90 %RH or less
Storage Temp. – 20 ~ 60 ℃, Humidity 90 %RH or less
: Ordering guide
Model name Description
EVC10B-00 Basic model
EVC10B-R4 Electronic expansion valve controller + RS485
Modbus Comm.
EVC10B-T-00 Electronic expansion valve controller – Basic model
(Only use temperature sensor only)
EVC10B-T-R4 Electronic expansion valve controller + RS485
(Only use temperature sensor only )
※ Temperature & Pressure sensor should be purchased separately.
: Component
Product Manual

-2- EVC10B R20140821
: Accessory
Items Description
DPR-TH1-ST-XHP
Sensor type NTC 5KΩ
Cable 2 C X 0.5 mm
Protection level IP67
Accuracy ±0.3 ℃ at 25 ℃
Measuring range -50 to 50 ℃
24069001
24069001 : AC Power Transformer (30VA), 220Vac to 24Vac
Connection kit
Items Description
DP512-G7-XHP
(-1~15bar)
Sensor power 5 Vdc ±5 %
Signal output 0.5 - 4.5 Vdc (Ratiometric)
Pressure
measure ran
g
e -1 ~ 15 bar
Operating
tem
p
erature -40 ~ 120 ℃
Protection level IP65
Accuracy ± 1.0 % F.S
Stability ± 0. 5 % (Longterm Stability)
Connector Type 7/16” UNF / FEMALE
Wiring Black(com), Green(out), Red(+5v)
2. Installation
: Dimensions
※ It can be installed with rail or using screw (4 ea)
: Wiring Diagram
: Terminal
No. Definition Description
J1 24 Vac Control power input port (AC24V)
J2 RUN Run signal input port (RUN)
J3 RS485 RS485 comm. Input / output port (RS485)
J4 AUX-RLY Auxiliary relay output port (AUX-RLY)
J5 P-SENS Pressure sensor input port (P-SENS)
J6 T-SENS Temperature sensor input port (T-SENS)
J7 EEV Electronic expansion valve output port (EEV MOTOR)
2m25mm
6sq

-3- EVC10B R20140821
: Details of terminal
No. Definition Description
J1.1
AC / DC
24V
+24V Power input AC24V or DC24V+
J1.2
J1.3 -24V Power input AC24V or DC24V-
J1.4
J2.1 RUN SIG Run / Stop signal input
J2.2 GND Signal common
J3.1 RS485 TRX+ RS485 comm. TRX+(A)
J3.2 TRX- RS485 comm. TRX-(B)
J4.1
AUX-RLY
N.O Auxiliary relay - Normal Open contact
J4.2 COM Auxiliary relay - common
J4.2 N.C Auxiliary relay - Normal Close contact
No. Definition Description
J5.1
P-SENS
+5V Power output for pressure sensor(+5V)
J5.2 S1 Pressure sensor signal input
J5.3 GND Pressure sensor power signal common
J6.1 T-SENS S2 Temperature sensor
J6.2 GND Temperature sensor common
J7.1
EEV
MOTOR
A EEV phase 1(A)
J7.2 B EEV phase 1(B)
J7.3 A# EEV phase 2(A#)
J7.4 B# EEV phase 2(B#)
J7.5 COM EEV common
J7.6 COM EEV common
1) Operation start and stop instruction
If SIG signal is short circuited (on), it will start to run. In case of opening (off),
operation will be stopped and expansion valve is closed immediately.
2) Utilization of auxiliary rely
Auxiliary relay can be used for alarm or compressor ON/OFF or liquid valve
ON/OFF In case of Pd= Off, use it as an alarm purpose.
If users enter pump down time (1~180 sec), it will be used for ON/OFF signal of
compressor.
3) Selection of electronic expansion valve
First of all, EVC10B needs to setup EEV mode to fit features of electronic
expansion valve. If EEV mode does not meet operation features of electronic
expansion valve, there can be malfunction. Please check it without fail. Operate
only number 2 and 3 of DIP SWITCH (DSW). After changing of setting, push
RES button on the right of product and restart. Users may input power
again.
DIP
SW 2
DIP
SW 3 MAKER & MODE SPEC.
OFF OFF
SANHUA-DPF(Q), DPF(R)
JAHWA-SEV, JHEV
FUJIKOKI-CAM
SAGINOMIYA-
UKV,SKV,VKV,PKV,AKV
1-2 PH excitation type
500 PULSE
30 PPS
OFF ON
SANHUA-DPF(O)
FUJIKOKI-EDM
GREEN-GV321,521,641
2 PH excitation type
2000 PULSE
100 PPS
ON ON Direct input by user Setup at
parameter 3 group
※ In case of DPF(O)-8.0, change set value after altering into user mode.
(DIP SW 2,3 = ON)
Function CODE Min. Max. Default Changed
Value
Expansion valve
excitation type EVD 0 1 2 2
Expansion valve TOTAL
PULSE EVP 100 999 200 250
Expansion valve OPEN
PULSE EVO 0 999 100 100
Expansion valve DRIVE
SPEED (PPS) EVS 1 18 1 5
4) Selection of control mode
Operation
mode
DIP SW Description
1 4
Automatic
mode OFF OFF
- Superheat control
- Possible to operate valve via
RS485 comm.
Drive ON ON - Operate valve receiving external
signal from J5 port
Manual
operation ON OFF
- Operate valve using UP/DOWN button.
- Possible to operate valve via
RS485 comm.
Temp.
control OFF ON - Precise temp. control by controlling hot gas bypass
※ It does not detect alarm at drive and manual operation mode.

-4- EVC10B R20140821
3. User interface
: Lamp & Operation button
Definition Description
LED
Super Heat When displaying superheat
Pressure When displaying pressure
Open % When displaying valve open ratio
Temp When displaying temperature
℃, bar Display the unit of temp. / pressure
Lighting when warning
(Flickering when manual return alarm
occurs)
Flickering at manual open ratio control
POWER Lighting at power up
TX, RX Flickering in communication
Button
Parameter change mode
Increase or upward
Decrease or downward
Select and save
Display mode (DIS) parameter of parameter
2 group value will be changed.
Superheat --- (▲▼)--- Pressure of evaporator
outlet ---(▲▼)--- Current open ration of EEV ---
(▲▼)--- Temperature of evaporator outlet
4. Parameter
: Parameter change
● Press PRG button for 3 seconds to change setting parameters.
※ password is not correct, state check is only available, but can’t change parameters.)
● Movement to next menu and storage of set value during parameter setup are performed by SEL button.
● Set value will be flickering in every 0.5 seconds and change set value using ▲ or ▼ key.
● Present flow value will be displayed if pressing SEL button for 3 seconds after finished setup.
● If there is no input for 30 minutes during setup, it will be returned to operation mode.

-5- EVC10B R20140821
: Setting 1 group table (Menu 1 = 1.PR)
※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
※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.
Address Description Code Unit Step Min. Max. Default Custom
4 0001 Superheat set-point SH K 0.1 0.5 30 6.0
4 0003 Start open ratio BIR % 1 0 100 0
4 0004 Start open ration duration time SDT Sec. 1 0 300 0
4 0005 P: Proportional gain DFR % 0.1 0.1 99.9 3.0
4 0006 I:Integral time I RT Sec. 1 0 999 120
4 0007 D:Derivative time DRT Sec. 1 0 999 30
4 0008 Low superheat alarm mode LS 0=No use 1=automatic return 2= manual return 1
4 0009 Detect low superheat alarm LSH K 0.1 0.5 30.0 0.5
4 0010 Low superheat alarm delay time LSD Sec. 1 1 300 15
4 0011 Clear low superheat alarm LSF K 0.1 1.0 30.5 3.0
4 0012 Maximum operating pressure alarm mode (MOP) MP 0=No use 1=automatic return 2= manual return 1
4 0013 MOP alarm detection pressure MOP bar 0.1 -1 50 9.0
4 0014 MOP alarm detection delay time MPD Min. 1 1 15 1
4 0015 Clear MOP alarm MPF bar 0.1 -1 50 8.0
4 0016 High superheat alarm mode HS 0=No use 1=automatic return 2= manual return 0
4 0017 Detect high superheat alarm HSH K 1 10 40 30
4 0018 High superheat alarm delay time HSD Sec. 1 1 600 3
4 0019 Clear high superheat alarm HSF K 0.1 7 37 27
4 0021 Freeze prevention alarm mode FR 0=No use 1=automatic return 2= manual return 0
4 0022 Detect freeze prevention alarm FRE ℃ 1 -40 40 0
4 0023 Freezing protection alarm delay time FRD Sec. 1 5 200 30
4 0024 Clear freeze prevention alarm FRF ℃ 1 -37 43 3
4 0025 Select pumpdown function and delay time PD Sec. 1 0 180 OFF(-1)
4 0026 Pressure set-point for stopping pumpdown PDP bar 0.1 -0.5 18.0 0.5
4 0027 Pressure low limit alarm mode LP 0=No use 1=automatic return 2= manual return 0
4 0028 Detect low limit pressure alarm LOP bar 0.1 -0.8 17.7 0.0
4 0029 Low limit pressure alarm delay time LPD Sec. 1 5 200 5
4 0030 Clear low limit pressure alarm LPF bar 0.1 -0.5 18.0 0.3

-6- EVC10B R20140821
: Setting 2 group table (Menu 2 = 2.PR)
※1 Password
It is necessary to input password to change or initialize parameters and default
value is “5”. Be sure to take notes not to forget or loss it after changing
password.
※2 Setup max. and min. range of pressure sensor
Setup max. and min. range of pressure sensor. Pressure sensor is a ratiometric
type of 0.5~4.5V. Default value before shipment is 1~15bar.
※3 Setup pressure sensor offset correction
Users can input offset correction value for pressure sensor, temperature sensor
and input error. It was set 0.0 as a default value.
※4 Jerk control ratio
Limit value of motor speed variation (Jerk Control)
※5 Expansion valve compulsory open ratio
If users want to temporarily control expansion valve by designated open ratio
while controlling normally. Default value before shipment is OFF.
※6 Sensor filter input time
Only expert can setup this parameter. If sensor input is excessively unstable,
increase filter value and make it stable.
※7 EEV compulsory open ratio
It can be used to temporarily control electronic expansion valve with designated
open ratio when controlling normally.
Default value is set as not in use.
※8 Way to change of display mode
Press up / downward button to change parameters
(DIS parameter will be changed)
Parameter number will be displayed for one second before parameter is
displayed.
* It is possible to change with direct input when displaying superheat set point.
※9 Initialization
If password is entered, parameters will be initialized as an default value before
shipment.
: Setting 2 group table (Menu 3 = 3.PR)
※ Users should input parameter which is suitable for characteristic of expansion valve. In case of difference,
it may be caused by malfunction or valve and system will be damaged.
Address Description Code Unit Step Min. Max. Default Custom
4 0061 Password PCD - 1 0 999 5
4 0062 Type of refrigerant RFY 22(0)= R22
134(1)= R134A
404(2)= R404A
407(3)= R407C
410(4)= R410A
717(5)= R717
23(6)= R23
507(7)= R507C 22(0)
4 0063 Pressure sensor Max. range (at 4.5V) PSH bar 1 -1 99 15
4 0064 Pressure sensor Min. range (at 0.5V) PSL bar 1 -1 99 -1
4 0065 Pressure sensor offset correction PCR K 0.1 -9.9 9.9 0.0
4 0066 Temp. sensor offset correction TCR K 0.1 -19.9 19.9 0.0
4 0069 Jerk control ratio ※4 JEY 0.1 0.1 100.0 100.0
4 0070 Expansion valve open ratio upper limit OPH % 1 0 100 100
4 0071 Expansion valve open ratio lower limit OPL % 1 0 100 0
4 0072 EEV compulsory open ratio O 11 - 0.1 0.1 10.0 1.0
4 0073 Sensor input filter time UCR % 0.1 0.0 100.0 OFF(-1)
4 0076 Display mode D I S
0= 1~4 Rotation
1= Superheat
2= Evaporator outlet pressure
3= Expansion valve open ratio
4= Evaporator outlet temperature
5= Saturation temperature
1
4 0077 Run/Stop method RMT 0= Always run 1= Digital input(RUN) 2= Communication Run 1
4 0078 Communication ID setup ID - 1 1 254 1
4 0079 Communication speed (BPS) setup BDR 48(0)= 4800 96(1)= 9600 192(2)= 19200 384(3)= 38400 96
Initialization RST - 1 0 999 0
Address Description Code Unit Step Min. Max. Default Custom
4 0042 Expansion valve excitation type EVD 1-2 = 1-2 phase excitation 2 = 2 phase excitation 2
4 0043 Expansion valve TOTAL PULSE EVP PULSE 1 100 999 200
4 0044 Expansion valve OPEN PULSE EVO PULSE 1 0 999 100
4 0045 Expansion valve DRIVE SPEED (PPS) EVS
10(0)= 10PPS
20(1)= 20PPS
30(2)= 30PPS
50(3)= 50PPS
80(4)= 80PPS
100(5)= 100PPS
200(6)= 200PPS
250(7)= 250PPS
500(8)= 500PPS 200

-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

-8- EVC10B R20140821
: TRIP / ALARM MESSAGE
※ Alarm which is flickering needs to reset by manual.
※ Press PRG/RST button two times quickly. Auxiliary relay (RL1) will be outputted if alarm is occurred. (In case of setting for alarm output relay)
6. Communication Protocol
: Specifications of communication
Item Description
Transmission line connection Multiple line
Communications method RS485 (2-wire, half-duplex)
Baud-rate BPS default 9600 BPS
Parity, Data, Stop bit None, 8 Data, 1 Stop
Protocol Type Modbus RTU MODE
Function Code Read HOLD REGISTERS (0x03) / Preset Single Register (0x06)
Maximum Read Word 32 Word
Media Type BELDEN 9841 / 9842, LG LIREV-AMESB
Poll interval 100msec
: STATUS - Communication Table
(※1) Manual control of EEV by communication
Electronic expansion valve will be controlled manually regardless of superheat of present system just by using 0.0 to 100.0% of UCR (electronic expansion valve compulsory open ration)
To lift a UCR (electronic expansion valve compulsory open ration), please input ‘1’ at 4 0073. Then it will be converted into automatic control mode.
But, electronic expansion valve will be closed automatically at the status of stop or alarm
(※2) Run / Stop by communication
※ RMT(Run/Stop) : It will be run or stopped by input of 4 0101 only if run / stop method should be set to communication (2)
Cods Description Parameter Conditions for occurrence Ways to clear
POP Pressure sensor disconnection - If pressure sensor is disconnected If pressure sensor is normal
PST Pressure sensor Short circuit - If pressure sensor is short circuited
TOP Pressure sensor disconnection - If temperature sensor is disconnected If temperature sensor is normal
TST Pressure sensor Short circuit - If temperature sensor is short circuited
MOP Detect MOP temperature
MP= 1 If present pressure remains higher than set value of MOP
during MPD (MOP alarm detection delay time)
System check is needed
It becomes a clear condition if present pressure value is less
than set value of MPF
MP= 2 (Flickering)
LOP Detect lower limit Pressure alarm
LP= 1 If present pressure remains lower than set value of LOP
during LDP (Low limit pressure alarm delay time)
It will be caused by lack of refrigerant.
It becomes a clear condition if present pressure is more than
set value of LPF
LP = 2 (Flickering)
HSH Detect high Superheat alarm
HS= 1 If present super heat remains higher than set value of HSH
during HSD (High superheat alarm delay time)
System check is needed
It becomes a clear condition if preset super heat is less than
set value of HSF
HS = 2(Flickering)
LSH Detect low superheat alarm
LS= 1 If present super heat remains lower than set value of LSH
during LSD (Low superheat alarm delay time)
System check is needed
It becomes a clear condition if present super heat is more
than set value of LSF
LS = 2(Flickering)
FRE Detect freezing Protection alarm
FR= 1 If present temperature remains lower than set value of FRE
during FRD (Freezing protection alarm delay time)
Evaporator temperature is low. System check is needed It
becomes a clear condition if present temperature is more
than set value of FRF.
FR= 2(Flickering)
Address Function Unit Type Size (Word) EVC10B MMI
4 0073 EEV compulsory open ratio(※1) % Analog INT 16 0.0 - 100.0 X 10
4 0099 Reset command - Analog INT 16 0 : OFF 1 : ON
4 0101 Run / Stop input (※2) - Analog INT 16 0 : Stop 1 : Run
4 0102 Operation status - Analog INT 16 Refer to below bit
Bit0 Operation status of EEV - Digital Bit 0 : OFF 1 : ON
Bit1 Aux. relay output - Digital Bit 0 : OFF 1 : ON
4 0110 Alarm status - Analog INT 16 Refer to below bit
Bit0 Press. sensor disconnection - Digital Bit 0 : OFF 1 : ON
Bit1 Press. sensor short circuit - Digital Bit 0 : OFF 1 : ON
Bit2 Temp. sensor disconnection - Digital Bit 0 : OFF 1 : ON
Bit3 Temp. sensor short circuit - Digital Bit 0 : OFF 1 : ON
Bit4 MOP alarm - Digital Bit 0 : OFF 1 : ON
Bit5 Lower limit pressure alarm - Digital Bit 0 : OFF 1 : ON
Bit6 High superheat alarm - Digital Bit 0 : OFF 1 : ON
Bit7 Low superheat alarm - Digital Bit 0 : OFF 1 : ON
Bit8 Freezing protection alarm - Digital Bit 0 : OFF 1 : ON
4 0111 Present Superheat K Analog INT 16 X 10
4 0112 Present saturation temperature ℃ Analog INT 16 X 10
4 0113 Present pressure bar Analog INT 16 -1.0 ~ 1.0 X 10
4 0114 Present temperature ℃ Analog INT 16 -100.0 ㅤ 100.0 X 10
4 0116 EEV open ratio % Analog INT 16 0.0 - 100.0 X 10