DOTECH DPX300-HIAIR User manual

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DPX300-HIAIR
Digital pressure switch
User Manual
DOTECH INC. 6F, JOONGANG-ILBO B/D, 30, Dongsan-ro, Danwon-gu, Ansan-si, Gyeonggi-do, KOREA TEL: [phone] FAX: [phone]
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(0.50mm2).
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 decribed in the guarantee conditions provided by the manufacturer shall not be respoinsible 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.
※ Specifications are subject to change without prior notice.
bar
bar
bar
DIMENSIONS AND MOUNTING(unit: mm)
※ Please install a siphon tube to protect from pulsating pressure and
high temperature contact.
SPECIFICATIONS(STANDARD MODEL)
Power 100 – 240 Vac, 50/60 Hz
Power Consumption MAX 10 VA
Output 3P Relay Outputs / 250 Vac, 30 Vdc, 5 A
Pressure
Sensors
Measurement Range - 1 ~ 30 bar(HP), -1 ~ 15 bar(LP, OP)
Accuracy ±0.5 %FS @ 25 °C
Overpressure 150 %FS
Stability ±0.5 %FS/year
Shock 20 g sinusoidal, 11 msec
Vibration x-y-z directions of 5 -2000Hz / 10g
Working Temp. -40 ~ 125 °C
Connection 7/16UNF” / MALE
Pressure Type Gauge
Dimensions 200(W)mm X 160(H)mm X 76(D)mm
Weight 1.3kg
Protection rating IP54(Housing)
Operation Temperature -20 ~ 70 °C / Humidity 90%RH or less
Storage Temperature -20 ~ 80 °C / Humidity 90%RH or less
Cautions
20076
188
89
Ø5 * 4ea
120
38
bar
bar
bar

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Code Menu Description / Instructions Response at
Detection Reset Type
5Y5 Internal Parameter
Error
Change any parameters and turn off.
Then restart. Immediate Stop Automatic Reset
HOP High Pressure
Sensor Open
Please check a high pressure sensor
because it is open. Immediate Stop Automatic Reset
H5H High Pressure
Sensor Short
Please check a high pressure sensor
because it is short. Immediate Stop Automatic Reset
LOP Low Pressure
Sensor Open
Please check a low pressure sensor
because it is open. Immediate Stop Automatic Reset
L5H Low Pressure S
ensor Short
Please check a low pressure sensor
because it is short. Immediate Stop Automatic Reset
0OP Oil Pressure
Sensor Open
Please check a oil pressure sensor
because it is open. Immediate Stop Automatic Reset
05H Oil Pressure
Sensor Short
Please check a oil pressure sensor
because it is short. Immediate Stop Automatic Reset
DISPLAY AND CONTROLS
WIRING DIAGRAM
TRIP / ALARM MESSAGES
LED
HPS ON/OFF of Output / ON when Overpressure
ALM On when alarm occurs
LPS ON/OFF of Output / ON when Underpressure
RST ON when Manual Reset
OPS On/Off of output / On when oil pressure
OP On when displaying oil pressure
Button
Parameter Settings / Manual Reset (if pressed twice quickly)
Increase or Move Up / Display of oil pressure
Decrease or Move Down
Select & Save / Display of Saturated Temperature
+ Setup values will be initialized if pushing PRG button
and ▼button for 10 seconds.
OSNU-20 OSNU-20
bar
bar
bar
Low pressure
sensor
Oil pressure
sensor
High pressure
sensor
ButtonStatus Display
FG
※ When it alarms, it beeps and all the outputs are cut off. To stop the beep, press the reset.
No Connection Description
1 FG
100 - 240Vac, 50/60Hz Power Input
2 L1
3 L2
5LPS Open when the low pressure is below lower limit
6 Common signal
7HPS Close when the high pressure is above the upper limit
8 Common signal
9OPS Open when the oil pressure is below lower limit
10 Common signal
11 S1 Compressor operation status input switch
Operation: Close contact, stops: Open contacts
12
FG L1 L2 LPS HPS OPS S1
Capacity of relay contact : 250Vac, 30Vdc, 5A/3ea
POWER
100-240 Vac
50/60Hz
12 3 56 7 8 9 10 11 12

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PARAMETER
(※1) Reset mode : Automatic Reset (A ): It will be reset automatically when reaching releasing pressure value.Manual reset
(H ): It will not be reset when reaching release pressure value unless users press RST button twice consecutively.
(※2) Low pressure switch delay time : If output is activated, it maintenances ON status during minimum ON time even under the OFF condition.
(※3) Oil Pressure Switch Set Value : Differential pressure(ODP) = Oil pressure – Low pressure
When input switch for compressor operation status (S1) is closed (Normally closed contact (N.C)),
it becomes an ON condition for OPS (Oil Pressure Switch Set Value) output if ODP (Differential pressure valve)is
less than OPS (Oil Pressure Switch Set Value). Output is de-activated if ODP (Differential pressure valve) is
higher than OPF (Oil Pressure Switch Releasing Value) after output is activated.
(※4) Oil Pressure Switch Delay Time : Output will be activated after maintaining delay time which is set even though it is
under the ON condition.
LED lamp will be turned on a light simultaneously with output after flickering during delay time.
(※5) Refrigerant selection : Display saturation temperature in accordance with selected refrigerant.
(※6) Offset : Offset the differential for pressure sensor. e.g)
If displayed pressure value: 2.0bar and actual pressure value: 2.2bar It is offset by inputting +0.2bar.
■ PARAMETER TABLE (PRG Button Push for 3 Sec.)
No Menu Code Unit Step Min Max Default Custom
Setup
1 High Pressure Switch Set Value HPS bar 0.1 0.0 30.0 18.5
2High Pressure Switch Reset Mode (※1)
(Manual / Automatic Reset) HPH A = Automatic Reset H = Manual Reset H
3 High Pressure Switch Releasing Value HPF bar 0.1 0.0 HPS - 0.1 14.5
4 High Pressure Switch sense delay HPD sec 1 0 999 0
5 Low Pressure Switch Set Value LPS bar 0.1 -1.0 15.0 0.3
6Low Pressure Switch Reset Mode (※1)
(Manual / Automatic Reset) LPH A = Automatic Reset H = Manual Reset A
7 Low Pressure Switch Releasing Value LPF bar 0.1 LPS + 0.1 15.0 1. 3
8 Low Pressure Switch Delay Time (※2) LPD sec 1 0 999 0
9 Oil Pressure Switch Set Value (※3) 0PS bar 0.1 0.0 16.0 0.7
10 Oil Pressure Switch Reset Mode (※1)
(Manual / Automatic Reset) 0PH A = Automatic Reset H = Manual Reset H
11 Oil Pressure Switch Releasing Value (※3) 0PF bar 0.1 0PS + 0.1 16.0 0.9
12 Oil Pressure Switch Delay Time (※4) 0PD sec 1 0 999 60
13 Oil Pressure Switch Control Mode 0DP 0 - L =OP - LP H - 0 =HP - OP 0-L
14 Refrigerant Selection (※5) RFY 407
15 Low Pressure Offset (※6) LOF bar 0.1 -1.9 1.9 0.0
16 High Pressure Offset (※6) HOF bar 0.1 -1.9 1.9 0.0
17 Oil Pressure Offset (※6) 0OF bar 0.1 -1.9 1.9 0.0
R22 (0)= R22
R23 (1)= R23
12 3 (2)= R-123
12 4 (3)= R-124
13 4 (4)= R-134a
404 (5)= R-404a
407 (6)= R-407c
4 10 (7)= R-410a
507 (8)= R-507
● Press PRG button for 3 seconds to 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 ▼ button
● If there was no input for 3 minutes during setup, it will be returned to operation mode.
● Setup values will be initialized if pushing PRG button and ▼ button for 10 seconds.
OPERATION
MODE
PARAMETER
Press for 3 seconds
Press for 3 seconds
Button
Button
PARAMETER SET VALUE
CHANGE
MOVEMENT TO
NEXT MENU
SET VALUE
SAVE
MENU
SET VALUE COMPLETE
Button
COMPLETE SET