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ESIE07-05 The Digital Controller
Part 2 – Functional Description 2–37
3
2
4
5
1
Delay low oil pressure alarm ■ STARTUP DELAY = 300 s
■ OPERATING DELAY = 90 s
Delay high oil pressure differential 20 sec
Max differential oil pressure 2.5 bar
Freeze protection
■ SETPOINT = 02.0 °C
■ DIFFERENTIAL = 01.0 °C
Liquid Injection
■ SETPOINT = 85.0 °C
■ DIFFERENTIAL = 10.0 °C
Evaporator heater
■ SETPOINT = 3.0 °C
■ DIFFERENTIAL = 1.0 °C
Supervisor configuration
■ PROTOCOL = CAREL
■ COMMUNICATION SPEED = 19200
■ IDENTIFICATION NUMBER = 001
Default parameter? NO
■ Modem connection password
■ Password for driver configuration
(Exv manufacture)
0152
Password for driver configuration Reserved area
Oil low pressure
alarm delays
Startup delay
Run delay
300
090
s
s
Oil high pressure
diff. delays
Setp
Delay
2.5
020
bar
s
Liquid injection
Setpoint
Diff.
085.0
10.0
˚C
˚C
ESIE07-05.book Page 37 Friday, December 21, 2007 3:21 PM
Содержание
- Service manual 1
- About this manual 4
- Characteristics 5
- Safety measures 6
- Installation 7
- Standard accessories furnished on basic unit 10
- Options on request 11
- Part 2 functional description 12
- Part 2 14
- The digital controller 14
- What is in this chapter 14
- General description 15
- Main control software features 16
- Component description digital controller 17
- Control panel 18
- Main board 19
- Eexv valve driver 21
- Meaning of the driver eexv status leds 23
- Addressing of plan 24
- Display and keypad 25
- Controller menu s 28
- Cooling 29
- Ent evap xxx c 29
- Gg mm aa 29
- Lvg evap xxx c 29
- Main menu 29
- Staging 29
- Status 29
- Stp source 29
- Water temperatures 29
- Comp 1 30
- Delivsupheat 30
- Lvg rec xxx c 30
- Position 30
- Press barg 30
- Status auto xxx 30
- Suction 30
- Supheat 30
- Water temperatures 30
- User menu 32
- Setting menu 36
- Input output menu i o menu 37
- Bios date 38
- Bios version 38
- Boot date 38
- Boot version 38
- Driver firmware 38
- Version 38
- Xx xx xx 38
- Manufacturer menu 39
- 090 s s 42
- Bar 01 00 bar 42
- Bar 20 05 bar 42
- Delays 42
- Low pressure alarm 42
- Max load setp 42
- Min load setp 42
- Pressure alarm 42
- Pressure ratio alarm 42
- Run delay 42
- S 120 060 s 42
- Setpoint 42
- Startup delay 42
- Transducers high 42
- Transducers low 42
- 020 bar s 43
- 090 s s 43
- 10 c c 43
- Alarm delays 43
- Diff delays 43
- Liquid injection 43
- Oil high pressure 43
- Oil low pressure 43
- Run delay 43
- Setpoint 43
- Startup delay 43
- Maintenance menu 44
- Comp min load 46
- Compressor 46
- Dt to reload and 46
- Max time min 46
- Min evap dt 46
- Reunload comp 46
- Time to download 46
- Buffer n 47
- Choose language 47
- Compressor 1 47
- English 47
- Manual load 47
- Reset alarm 47
- Service menu 47
- State auto 47
- Alarm menu 48
- Buffer alarm menu 49
- 44 part 2 functional description 50
- Alarm list 50
- Alarm table chiller 50
- Introduction the table below shows the list of the possible alarms with the identifier number the cause and the reset type a auto m manual 50
- The digital controller esie07 05 50
- Alarm table driver1 51
- Alarm table driver2 51
- Esie07 05 the digital controller 51
- Part 2 functional description 2 45 51
- Functional control 53
- Part 2 53
- What is in this chapter 53
- On off management 54
- Continuous loading and unloading uses 2 solenoid valves to control the screw compressor slide and thus its capacity control is performed by outlet temperature 55
- Esie07 05 book page 49 friday december 21 2007 3 21 pm 55
- Esie07 05 functional control 55
- In the following flow chart the unit startup management and shutdown procedures are shown as well as the compressors loading and unloading strategy 55
- Introduction the thermostat control is used to generate a load up or load down according to the active pid regulation 55
- Part 2 functional description 2 49 55
- Thermostat control 55
- Unit and compressor start up and shutdown procedure 55
- 50 part 2 functional description 56
- Compressors start up and loading management 4 compressors 56
- Functional control esie07 05 56
- Unit s hutdown request 56
- Unit shutdown 56
- Compressors unload and shutdown management 4 compressors 57
- Esie07 05 functional control 57
- Part 2 functional description 2 51 57
- 52 part 2 functional description 58
- A t in load band load up to 75 stop off off 58
- B t not in load band fixed at 50 stop off off 58
- Dead band 0 c 58
- Functional control esie07 05 58
- If setp t shutdown dt cooling 58
- If t is approaching setp waiting 58
- Interstage 210 s 58
- Loading and unloading zones the graph below shows the different loading and unloading zones 58
- Max pull down 0 min 58
- Off off off off 58
- Or t setp shutdown dt heating 58
- Reload t 0 c 58
- Settings do not change 58
- Stop off off off 58
- Unload up to 25 off off off 58
- Waiting 58
- Cooling double 60
- Enable double 60
- Heating double 60
- Setpoint 60
- Setpoint reset of the chilled water 60
- Setpoint y 60
- Chlwt return reset 62
- Max reset 3 c 62
- Return water reset 62
- Start dt 62
- Freeze up control 63
- 58 part 2 functional description 64
- Anti freeze alarm 64
- Evap 1 anti freeze alarm 64
- Evap 2 anti freeze alarm 64
- Function description 64
- Functional control esie07 05 64
- In case the unit has 2 evaporators 64
- Setpoint 64
- Enable soft load 65
- Max stage 65
- Max time 65
- Y enable soft load 65
- Current limit 66
- Current limit set 66
- Demand limit 66
- Max curr 66
- Unit limiting 66
- Unit load limiting 66
- High chlwt start 67
- Max comp stage 67
- Start up with high evaporator water temperature 67
- Delay on switching 68
- Pump control 68
- Pump fan and comp 68
- The main pump off 68
- Time between main 68
- Auto restart after power failure function 69
- Autorestart after 69
- Power failure y n 69
- Liquid injection 70
- Setpoint 70
- Exv pre opening 71
- Exv preopening 71
- Compressor configuration 72
- Numbers of compressors 72
- Numbers of evaporators 1 2 72
- Auto manual 73
- C 1 1st 73
- C 2 2nd 73
- C 3 3rd 73
- C 4 4th 73
- Comp starts 73
- Compressor management 73
- Compressors 73
- Min t between diff 73
- Min t between same 73
- Min time comp off 180 s 73
- Min time comp on 73
- Sequencing 73
- Set compressor stage 73
- 68 part 2 functional description 74
- Function description 74
- Functional control esie07 05 74
- High pressure setback 75
- Lp prevention 76
- Capacity control 77
- Number of pulses 77
- To load comp 77
- To unload comp 77
- 72 part 2 functional description 78
- Compressor loading 78
- Compressor unloading 78
- Fixed variable 78
- Functional control esie07 05 78
- Graph 1 a pure proportional logic will load or unload with a frequency related to the set point distance 78
- Max pulse period 78
- Min pulse period 78
- Pulse time 78
- Pulse time the time of the pulse time is fixed default 0 s the interval time between two pulses is proportional to the pid proportional integral derivative unit request 78
- Esie07 05 functional control 79
- Graph 2 the derivative part of the logic controls how the temperature reaches the setpoint if it is getting closer increases the time between intervals or if it is far from the setpoint decreases the time between intervals the result is having the controller act differently whenever the water temperature changes 79
- If the derivative time is increased the control will be more sensitive to temperature changes for example the derivative time can be increased when a chiller is working with a very variable load the integral time stores the memory on how the p 1 controls the temperature 79
- Part 2 functional description 2 73 79
- Enable 80
- Max time 80
- Min press 80
- Pump down config 80
- Pump down configuration at compressor stop 80
- Pressure alarm 81
- Pressure safeties 81
- Setpoint 81
- Transducer high pressure alarm 81
- Transducers high 81
- Transducer low pressure alarm 82
- Low press alarm delays 83
- Lp alarm delay 83
- Run delay 83
- Start up delay 83
- Max load setp 84
- Min load setp 84
- Oil management safeties 84
- Pressure ratio alarm 84
- High oil dp alarm 85
- Pressure ratio alarm 85
- Pressure ratio alarm delay 85
- Run delay 85
- Setpoint 85
- Start up delay 85
- Part 3 troubleshooting 87
- Part 3 89
- Procedure for software upload download 89
- What is in this chapter 89
- Copy from the software key to pco 90
- Copy from the software key to pco² 90
- Copy from pco to the software key 91
- Copy from pco² to the software key 91
- Installation of winload32 on the pc and programming a controller 92
- Go to the winload32 program page 93
- Select chiller pco² page 93
- Double click on the file 95
- Press on extract 95
- Select winload32 exe 95
- The file winload32 v3 0 is now saved on the hard disk of your pc 95
- Winzip will open 95
- Click on the model name 97
- Click to download the file 97
- Go back to the pco² software download page on the extranet 97
- Select save to download the file to your pc 97
- Please check that you have 4 times 106
- Upload completed successfully 106
- Copy software from winload32 to the software key 107
- Part 3 109
- Plan setting 109
- What is in this chapter 109
- I o board adr 110
- Plan setting 110
- Press enter 110
- Priv shared 110
- Terminal adr 16 110
- Terminal config 110
- To continue 110
- Part 4 commissioning and test run 111
- Part 5 maintenance 113
- Maintenance 115
- Part 5 115
- What is in this chapter 115
- Screw compressors 116
- Standard controls 117
- System maintenance 118
- Preventive maintenance schedule 121
- Refrigerant 122
- Appendix b 123
- Part 6 123
- What is in this chapter 123
- General chiller start up guide 124
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