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1、XJK-LG5 Refrigerated Air Dryer Controller User ManualThanks for your choose XJK-LG5 refrigerated air dryer controller, please read the manual before use. And operation should be complied with the manual.I Main Functionl Local/Remote control the work of compressor and drain valve automaticallyl Link
2、signal control the work of controllerl Detect temp. of each part of systeml LCD display running/alarm information and parameter value l Output alarm signall Communication with PC (RS485)l Output a start signal for subordinate after compressor work II Technical Datal Rating voltage: AC220V(+15%，-20%)
3、.l Analogy input: 5 channels of temperature l 6 channels of relay output (include energize, Y, , drain, alarm, subordinate machine start)If the voltage of contact is AC 220V, then the sensitive load current of contact is 0.8A, the resistance current of contact is 2A.l Digital input signal: 4 buttons
4、 (include =, , , run/stop), alarm signal (N.C), link start signal.l Display: 12832 lattice LCD screen, 2.99 (76mm) wide by 0.98 (25mm) tall.l Shell size: 218150115. Its panel-mount, the recommended panel cutout for the controller is 8.27 wide (210mm) by 5.51 tall (140mm). III Display1. LCD2-4. light
5、-emitting diode alarm5-8. button9. light-emitting diode compressor work10. light-emitting diode inlet gas temperature too high.11. light-emitting diode dew point temperature too high12. light-emitting diode drain valve workFollowing table lists function of each button.NO.Button Definition 1=1.Press
6、and hold over 2 seconds in standby mode, enters into program mode2. Choose next parameter in program mode.3. Confirm input password.4. Confirm new password after modify.21. Add value of current parameter in program mode2. Input password (add)3. Read the other temperature detect value31. Minus value
7、of current parameter in program mode2. Input password (minus)3. Release output alarm signal, but LCD also displays alarm information4RUN/STOP1. ON/OFF controller2. Exit program mode, and save modified values5=+Enter into junior password input screen in program mode6=+ Enter into senior password inpu
8、t screen in program modeIV Explanation for parametersTo successfully program this controller, you must first understand how it works and what you are programming into it. Model LG5 controller has 3 class of parameter, class 1 for normal use, class 2 for compensation and other important parameter, cl
9、ass 3 for upper limit of total work time.Table 1 parameter list of class 1Parameter Definition Set rangeInlet gasHigh temp. alarm of inlet gas2090Dew point If detect dew point preset of dew point, temperature of dew point will not take part in control.130Note 1: work procedure of drain valve, please
10、 see section VI.Note 2: if preset value of return-dew point preset value of dew point, shield dew point take part in control logic.Table 2 parameter list of class 2Parameter Definition Set rangeTemp. com.t1Compensation of inlet gas temp.-9 - 9t2Compensation of dew point -9 - 9t3Compensation of outle
11、t gas temp.-9 - 9t4Compensation of condensation temp.-9 - 9t5Compensation of evaporation temp.-9 - 9T-switchY- switch time when compressor start 1 99sAddressCommunication address1-30Delay timeDelay time to start subordinate machine after compressor work1-99 mLock time Delay time of restart compresso
12、r after turn off compressor1-999 sUp delayDelay time before start controller when receive link start signal0-99sNote 3: after lock time, press RUN/STOP, output relay of Energize and Y are closed, compressor start to work, and light-emitting diode 9 (compressor) light. After time of preset of T-switc
13、h, output relay of Y is open and output relay of is closed, Y/ connection finished.Note 4: preset value of address should be equal to the address set in host monitor software.Note 5: compressor stop work or controller is energized, count down the preset value of lock time, enter into lock protect st
14、ate, controller not answer any order. Note 6: after receive the link start signal, controller no start to work immediately, it will delay the time of preset of up delay. Table 3 parameter list of class 3Parameter Definition Set rangeTotalUpper limit time of total work time 0-9999 hNew codeSenior cod
15、e0-9999Note 7: if the preset of total is 0 means that there is no upper limit for total work time. If the preset is nonzero, and the total work time is up to the preset (LCD is bright, but display nothing, and light-emitting diode 4 twinkles), the controller doesnt answer any order when restart it.
16、Modify the preset value of total can make the controller work again.Note 8: the new password should press = button to make it effective. And next time, input the new password.V Program After energizing, the controller enters into lock protect state, as figure 10. After lock time, enters to standby s
17、tate, as figure 8. 1) Program class 1 parameter Press = button in standby mode to enter into program mode. And the LCD will display as the figure 1. Current parameter value is displayed in black background. Press / button to add or minus the preset value. E.g. if the preset value of inlet gas displa
18、ys in black background, means current parameter is inlet gas, press / button to modify the value. Press button to add, the upper limit of inlet gas is 120. Press button to minus, the lower limit of inlet gas is -19. Press / button continually, the value add or minus quickly.Figure 1Press = button to
19、 choose the next parameter. Show as the figure 2.Figure 2Note 9: if the preset of dew point difference the preset of dew point, means the dew point is only used to display, and not take part in control. When you finish program and wish to exit program mode, press run/stop button. Or if there isnt an
20、y press action within 10 seconds, the controller will save changed value and exit program mode automatically.2) Program class 2 parameterPress = and buttons at the same time in program mode, LCD displays junior password input screen, as following figure.Figure 3Default password is 666, and cant be c
21、hanged. Press /button to input correct password. Press = button to confirm the input password. If its right, the LCD will display as figure 4. But if its wrong, the LCD will display as figure 1.Figure 4Press = button to choose the next parameter, until the LCD display as figure 5.Figure 5Modify the
22、preset value of parameter as class 1 parameter. Press /button to add or minus the preset value. Press = button to save and return to class 1 parameter setting screen, as figure 1.3) Program class 3 parameterPress = and buttons at the same time in program mode, LCD displays senior password input scre
23、en, as following figure.Figure 6Default password is 888, and it can be changed. Press /button to input correct password. Press = button to confirm the input password. If its right, the LCD will display as figure 7. But if its wrong, the LCD will display as figure 1.Figure 7Modify the preset value of
24、 parameter as class 1 parameter. Press /button to add or minus the preset value. Press = button to save and return to class 1 parameter setting screen, as figure 1.When senior password is changed, it need to press = to confirm, then press run/stop to exit the program mode.3) SaveWhen you finish prog
25、ram and wish to exit program mode, press run/stop button. Or if there isnt any press action within 10 seconds, the controller will save changed value and exit program mode automatically.VI UseWork procedure of refrigerated air dryer: Press Run/Stop button when no alarm signal，refrigerated air dryer
26、start to work, compressor is on. The port of energize and Y connected with port COM (KM1, KM2 are on), LCD displays Main:ON, and light-emitting diode 9 light. After setting value of T-switch (Y-switch time), Y disconnected with port COM (KM2 is off) and port connected with port COM (KM3 is on). Y- c
27、onnection swtich procedure is finished, compressor work normally. If compressor doesnt need Y- swtich protection, connect the compressor to port energize directly.Work procedure of drain valveAfter compressor start to work, controller control drain valve automatically. Delay preset time of Drain OFF
28、, then open the drain valve for preset time of Drain ON. Figure 8Start controller:There are three start method. Local start, remote start and link start. Compressor start to work should conform to following condition. no alarm signal (compressor overload, high pressure alarm, low pressure alarm) det
29、ected dew point preset value of dew pointRemote control mode: connect port L+ and port local/remote to choose remote control. When controller in work status and choose remote control mode, controller will stop and wait remote start signal. In remote control status, light-emitting diode 2 twinkles an
30、d LCD displays Remote: ON or Remote OFF in leftbake corner. LCD displays as following figure:Figure 9Link start is always valid no matter in local control mode or remote control mode. In local control mode if link start signal is input, light-emitting diode 3 twinkles and LCD displays as figure 10.
31、In remote control mode if link start signal is input, light-emitting diode 2 twinkles in remote control mode, and LCD displays as figure 9. local start: press Run/Stop button, light-emitting diode 3 light, LCD displays as figure 10.Figure 10 Remote start: port L+ and port local/remote are connected,
32、 and port L+ and port remote start are connected. light-emitting diode 3 light, LCD displays as figure 9. Link start: when port L+ and port link signal are connected, controller will be started after the time of setting of up delay, .Stop controller: Press Run/Stop button to stop controller in any c
33、ontrol mode, it has priority. Disconnect port L+ and port remote start in remote control mode. Disconnec port port L+ and port link signal if link start signal is input.Controller enters into lock protect mode, LCD displays as figure 11.Figure 11After lock time, controller enters into standby status
34、, LCD displays as figure 12.Figure 12Display other detected temperatureIn running or standby mode, press button to make the LCD display other detected temperature. VII AlarmIn running mode, if alarm signal is input, LCD displays as following. See table 4 for details. Figure 13Table 4Fault type Cause
35、 analysisPhenomena Compressor Inlet gas high temp. alarmInlet gas temperature is too high Display value in black ground, light-emitting diode 10 twinkleNot stopDew point Detect dew point preset value of dew point + preset of dew point differenceDisplay value in black ground, light-emitting diode 11
36、twinkleNot stopOther alarmAlarm signal is input lDisplay err, and light-emitting diode 4 lightStop Note 10: alarm signal type is N.C, so when port L+ and port Alarm signal are disconnected, controller output alarm signal, and LCD displays as figure 13.Inlet gas high temperature alarm:If the temperat
37、ure of inlet gas is higher than preset value of inlet gas, light-emitting diode 10 twinkle, and the value will be displayed in black background, as figure 14 shows. And alarm phenomena will be disappear when inlet gas temp. is lower than value of inlet gas. Figure 14Total work time:If the LCD displa
38、ys nothing, and the light-emitting diode 4 light, means that the total work time has gotten up to the preset of total time. Then the controller will not answer any operate action, except enters into program mode and modify the total time. If the preset of total time is 0, means exit this function, t
39、he total work time has no time limit.VIII ConnectionSee figure 15 for details.Figure 15The definition of each port:12345678910111213141516Inlet gas temp.sensorCondensation temp. sensorOutlet gas temp. sensorDew point Evaporation temp. sensorL+Local/remoteRemote startLink start signalAlarm signal input17181920212223242526272829303132UNPECOMenergizeYDrain Alarm Subordinate machine start RS485