ReFreeX user manual for H425V2
Contents
1. metreex E A H425V2 User manual ID MICHELETTI IMPIANTI doc H425V2 Contents Contents 1 2 8 9 Parameter list Parameter remarks Alarm list Slave alarm list Button list Led list Soft command list How to Shortcut list 10 Led and push button location The IATEX source of this document has been automatically produced by 4 13 22 on 2015 11 27 page 2 6 ID MICHELETTI IMPIANTI doc H42 5V2 1 Parameter list Rem Parameter M__ MU MLO MLb MLd MHO 1 MLH MLL MHH MHL 2 MU1 MU2 3 MU3 Mut 4 MM1 MM2 MM3 5 MMH 6 MMd ncH 7 ncr 8 ncU ncd n1H 9 niL n2H n2L n3H n3L n4H n4L b bl b1C b1A b2 b2C b2A b3 b3C b3A b4 b4C b4A b5 b5C b5A be b6C b6A b7_ b7C b7A b8 b8C b8A L__ LI L1H Lid L2H L2d L3H L3d L4H L4d L5H L5d Description Functions about compressor Functions about pressure switches suction low pressure regulation similar to Danfoss RT1AL set point minus half of neutral zone suction pressure regulation dead band MLO MLb are the upper lower limits suction pressure regulation differential loading at MLO MLb MLd unl at MLO MLb MLd discharge HP pressure limit forcing the timed compressor unload low pressure safety restart similar to Danfoss KP15 Ip set point low pressure safety stop similar to Danfoss KP15 Ip set point differential high pressure safety stop similar to Danfoss KP15 hp set point2. 00 dd hh mm ss on 1 00 00 _on dd hh mm ss dd hh mm ss The IATEX source of this document has been automatically produced by 4 13 22 on 2015 11 27 page 3 6 ID MICHELETTI IMPIANTI doc H425V2 Rem Parameter Description Lo_ 10 Loo d dF dF4 dF5 dF6 dS4 dS5 dS6 P3M P3d itil PO3 Od8 On stand by status actual status stand by or on Functions about delays Delay from previous stop mcl start delay mc2 start delay mc3 start delay mcl stop delay mc2 stop delay mc3 stop delay Functions about master preferences Functions about network address master address for global network communication number of slaves connected to this master Suction pressure broadcast enable suction pressure periodic broadcast over the PC net delay between pressure broadcast messages delay between latest received message and broadcasting start specify originating address in the pressure message become network master after Pbb delay poll periodically second central unit for pressure broadcast master address of second central unit delay between pressure broadcast messages of second central unit poll periodically third central unit for pressure broadcast master address of third central unit delay between pressure broadcast messages of third central unit Output assignment assign out 3 relay to O condenser fan 1 oil receiver solenoid 2 alarm 3 oil heater 4 subcooler 5 off Functions about input o
3. 6 mc3 oil pressure enable probe Probe nr 7 high pressure HP enable probe Probe nr 8 low pressure LP enable probe Functions about alarm and stand by Other alarm inputs enable mc1 alarm mcl alarm delay enable mc2 alarm mc2 alarm delay enable mc3 alarm mc3 alarm delay enable external override alarm override alarm delay enable digital input 5 alarm compressor phase monitor thermal overload relay digital input 5 alarm delay Minimum Maximum 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 55 0 145 0 0 5 0 5 0 5 oFF _on 0 194 4 20 15 oFF _on oFF _on 0 255 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 0 0 99 0 99 0 99 0 oFF _on 99 0 99 0 oFF _on 99 0 99 0 oFF _on 99 0 99 0 oFF _on 99 0 99 0 oFF _on 99 0 99 0 oFF _on 99 0 99 0 oFF _on 99 0 99 0 oFF _on oFF _on 0 194 4 20 15 oFF _on 0 194 4 20 15 oFF _on 0 194 4 20 15 oFF _on 0 194 4 20 15 oFF _on 0 194 4 20 15 Default 2 8 0 5 0 2 24 0 1 2 0 2 28 0 24 0 1 0 1 0 1 0 25 0 2 2 2 oFF 1 00 00 _on 30 00 _on 30 00 Unit gauge bar bar bar dd hh mm ss ik gauge bar gauge bar gauge bar gauge bar gauge bar gauge bar gauge bar gauge bar gauge bar Ei Ai Es bar bar bar bar bar dd hh mm ss dd hh mm ss on 30
4. high pressure safety restart similar to Danfoss KP15 hp set point differential minimum oil differential pressure of compressor nr 1 minimum oil differential pressure of compressor nr 2 minimum oil differential pressure of compressor nr 3 minimum oil receiver temperature before opening the oil solenoid usage of mc nr 1 output O off 1 on 2 auto 3 slave no 4 slave nc 5 kriwan usage of mc nr 2 output O off 1 on 2 auto 3 slave no 4 slave nc 5 kriwan usage of mc nr 3 output O off 1 on 2 auto 3 slave no 4 slave nc 5 kriwan enable external load override on INP 4 external load override delay Functions about fans Functions about condenser fans enable condenser fans when compressor is off and discharge pressure is over maximum enable condenser fans speed regulation fan minimum speed minimum HP LP difference to keep on fans fan 1 start pressure similar to Danfoss KP5 set point active just when ncr is oFF fan 1 stop pressure similar to Danfoss KP5 set point differential fan 2 start pressure fan 2 stop pressure fan 3 start pressure fan 3 stop pressure fan 4 start pressure fan 4 stop pressure Functions about probe calibration Probe nr 1 oil receiver temperature enable probe Probe nr 2 discharge temperature enable probe Probe nr 3 engine room temperature enable probe Probe nr 4 mcl oil pressure enable probe Probe nr 5 mc2 oil pressure enable probe Probe nr
5. d Function 8 How to How to Function Switch between on and stand by Keep pressed B3 button to activate and deactivate stand by In stand by every output is leds from L1 to L7 blink timers continue to count Program the menu Keep pressed B6 to enter the menu Navigate up and down with B2 and B5 Select the submenu by B6 Change the parameter by B2 and B5 press B6 to confirm or B4 to go back without saving The changes will have effect after the exit from programming pressing B4 repeatedly Press B1 to exit immediately without saving any parameter Show or change pressure set Press shortly B6 the display shows the current set point change it by B2 and B5 and confirm it by B6 As alternative enter the menu program as explained above modify the parameter MLO then confirm it 9 Shortcut list Buttons to press Shortcut description keep pressed 5 seconds This instrument has no further shortcuts 10 Led and push button location The IATEX source of this document has been automatically produced by 4 13 22 on 2015 11 27 page 6 6
6. e manual reset A06 mc 1 oil pressure Oil differential pressure remained under minimum value for 120 seconds manual reset A07 mc 2 oil pressure Oil differential pressure remained under minimum value for 120 seconds manual reset A08 mc 3 oil pressure Oil differential pressure remained under minimum value for 120 seconds manual reset 4 Slave alarm list Display Alarm none This instrument has no slave alarm 5 Button list Push button Function Bl esc silence Exit without saving from any menu alarm buzzer silence B2 up Up navigation in the menu B3 on stand by Toggle between on and stand by B4 left Left navigation in the menu B5 down Down navigation in the menu B6 right menu set Right navigation in the menu display and modify the set point enter menu 6 Led list Led Function L1 compressor 1 On during compressor run blinking slowly during activation and deactivation delay L2 compressor 2 On during compressor run blinking slowly during activation and deactivation delay L3 compressor 3 On during compressor run blinking slowly during activation and deactivation delay L4 condenser fan1 On during condenser run L5 condenser fan2 On during condenser run L6 condenser fan 3 On during condenser run L7 condenser fan4 On during condenser run The IATFX source of this document has been automatically produced by 4 13 22 on 2015 11 27 page 5 6 ID MICHELETTI IMPIANTI 7 Soft command list Soft comman
7. ic board fault Low and average minimum speed can increase the risk 9 During the first 10 seconds of speed regulation the n1L is replaced by n1H n1L 2 10 Passing from stand by to on and at power on there is a 5 second delay spent in a virtual stand by 11 In H425V3 starting from revision 02 when PO3 is 4 OUT 3 drives the subcooler liquid solenoid AN 1 input is the subcooler suction temperature Mut is the wanted overheating where 8 0 C means 8 0 C maximum overheating is fixed at 99 0 C minimum overheating is fixed at 6 0 C n4H is the refrigerant type where 0 1 bar means R404A n4L is the cycle period where 0 8 bar means 8 s H4H is the initial on time where 0 5 bar means 5 s H4L is the adaptation speed where 0 8 bar means 8 To turn off the subcooler solenoid set PO3 to 5 The subcooler is enabled just when all of the available motorcompressors are on 12 The minus sign on display signals that output is going to start after a delay 3 Alarm list Display Alarm A01 mc 1 alarm Pressure switch thermistors or any other compressor safety device has disconnected A02 mc 2 alarm Pressure switch thermistors or any other compressor safety device has disconnected A03 mc 3 alarm Pressure switch thermistors or any other compressor safety device has disconnected A04 external override The external override contact is driving the controller A05 mc phase Compressor overload thermal relay disconnected or missing mains phas
8. n Ip switch Eventual pumpdown restart is over MLH 1 bar Fixed time 120 s and manual reset In H425V3 starting from revision 03 when MU1 and MU3 are 5 0 and b4A and b6A are oFF use 5NTC controller for compressors without oil 2 00 oFF oFF oFF Unit oFF 5 00 dd hh mm ss 10 00 dd hh mm ss 15 00 dd hh mm ss 45 dd hh mm ss 30 dd hh mm ss 15 dd hh mm ss m 2 02 on d hh mm ss d hh mm ss on 2 a gt 3 3 u n 30 ES 30 dd hh mm ss 0 55 0 C 55 0 C 55 0 C 0 0 gauge bar bar 0 0 gauge bar 0 0 gauge bar 0 0 gauge bar Caution Selection by manual override forces compressor to run whatever the high and low pressure no safety is left except hardware ones In The IATEX source of this document has been automatically produced by 4 13 22 on 2015 11 27 page 4 6 B MICHELETTI IMPIANTI doc H425V2 Nr Remark 5 Caution The external override drives the compressors ignoring high and low pressure no safety is left except hardware ones It is recommended to close this contact passing through both contacts of a low pressure and high pressure switch like a kp15 The closed contact is interpreted as load while the open contact is neutral The delays dF4 through dF6 are respected 6 After the delay elapsed the override forces a load Automatic reset 7 When speed regulation is off the fan is operated on off 8 Caution Speed regulation can cause fan fault or electron
9. utput and machine state read only Analog inputs oil receiver temperature discharge temperature engine room temperature oil pressure of mcl oil pressure of mc2 oil pressure of mc3 high pressure HP low pressure LP Digital input mcl hardware safety mc2 hardware safety mc3 hardware safety external override phase software safety Analog output actual alarm read only 0 means no alarm condenser humidity 4 20 mA Digital output condenser fan 2 condenser fan 3 condenser fan 4 compressor 1 compressor 2 compressor 3 oil receiver solenoid eventually connected to OUT 3 alarm eventually connected to OUT 3 Functions about slave preferences Functions about display input to show on display 1 IA1 2 IA2 2 Parameter remarks Remark WNRA pump connect HP probe on AN 6 and LP on AN 7 gt Minimum oFF FJ OG OG oO oFF oFF oFF oFF oFF oo oFF oFF oFF oFF oFF oFF oFF oFF slave mode the output is used for partialization In kriwan mode output is off for reset during stand by Maximum Default on 194 4 20 15 194 4 20 15 194 4 20 15 194 4 20 15 194 4 20 15 194 4 20 15 254 2 _on 194 4 20 15 194 4 20 15 on _on _on 254 194 4 20 15 _on 254 194 4 20 15 3 145 0 145 0 145 0 30 0 30 0 30 0 30 0 30 0 on on on on on 255 255 255 on on on on on on on on 255 When MLH lt MLL there is a delay of 10 MLL MLH seconds o
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