User manual - H425V1

Parameter list

Rem. Parameter Description Minimum Maximum Default Unit
M__Functions about compressor
MU_Functions about pressure switches
ML0suction low pressure regulation (similar to Danfoss RT1AL set point minus half of neutral zone)0.099.02.8(gauge) bar
MLbsuction pressure regulation dead band (ML0 +/- MLb are the upper/lower limits)0.099.00.5bar
MLdsuction pressure regulation differential (loading at ML0+MLb+MLd / unl at ML0-MLb-MLd)0.099.00.2bar
MH0discharge (HP) pressure limit forcing the timed compressor unload0.099.024.0(gauge) bar
1MLHlow pressure safety restart ( similar to Danfoss KP15 lp set point )0.099.01.2(gauge) bar
MLLlow pressure safety stop ( similar to Danfoss KP15 lp set point - differential )0.099.00.2(gauge) bar
MHHhigh pressure safety stop ( similar to Danfoss KP15 hp set point )0.099.028.0(gauge) bar
MHLhigh pressure safety restart ( similar to Danfoss KP15 hp set point - differential )0.099.024.0(gauge) bar
2MU1minimum oil differential pressure of compressor nr. 10.099.01.0bar
MU2minimum oil differential pressure of compressor nr. 20.099.01.0bar
3MU3minimum oil differential pressure of compressor nr. 30.099.01.0bar
Mutminimum oil receiver temperature before opening the oil solenoid-55.0145.025.0°C
4MM1usage of mc nr. 1 output: 0=off / 1=on / 2=auto / 3=slave no / 4=slave nc / 5=kriwan052/
MM2usage of mc nr. 2 output: 0=off / 1=on / 2=auto / 3=slave no / 4=slave nc / 5=kriwan052/
MM3usage of mc nr. 3 output: 0=off / 1=on / 2=auto / 3=slave no / 4=slave nc / 5=kriwan052/
5MMHenable external load override on INP-4oFF_onoFF/
6MMdexternal load override delay0194 4:20:151:00:00dd hh:mm:ss
n__Functions about fans
nc_Functions about condenser fans
ncHenable condenser fans when compressor is off and discharge pressure is over maximumoFF_on_on/
7ncrenable condenser fans speed regulationoFF_on_on/
8ncUfan minimum speed025540/
ncdminimum HP-LP-difference to keep on fans0.099.02.0(gauge) bar
n1Hfan 1 start pressure ( similar to Danfoss KP5 set point ) - active just when ncr is oFF0.099.010.0(gauge) bar
9n1Lfan 1 stop pressure ( similar to Danfoss KP5 set point - differential )0.099.06.0(gauge) bar
n2Hfan 2 start pressure0.099.07.0(gauge) bar
n2Lfan 2 stop pressure0.099.05.0(gauge) bar
n3Hfan 3 start pressure0.099.08.0(gauge) bar
n3Lfan 3 stop pressure0.099.06.0(gauge) bar
n4Hfan 4 start pressure0.099.09.0(gauge) bar
n4Lfan 4 stop pressure0.099.07.0(gauge) bar
b__Functions about probe calibration
b1_Probe nr. 1
b1Coil receiver temperature-99.099.00.0K
b1Aenable probeoFF_on_on/
b2_Probe nr. 2
b2Cdischarge temperature-99.099.00.0K
b2Aenable probeoFF_on_on/
b3_Probe nr. 3
b3Cengine room temperature-99.099.00.0K
b3Aenable probeoFF_on_on/
b4_Probe nr. 4
b4Cmc1 oil pressure-99.099.00.0bar
b4Aenable probeoFF_on_on/
b5_Probe nr. 5
b5Cmc2 oil pressure-99.099.00.0bar
b5Aenable probeoFF_on_on/
b6_Probe nr. 6
b6Cmc3 oil pressure-99.099.00.0bar
b6Aenable probeoFF_on_on/
b7_Probe nr. 7
b7Chigh pressure (HP)-99.099.00.0bar
b7Aenable probeoFF_on_on/
b8_Probe nr. 8
b8Clow pressure (LP)-99.099.00.0bar
b8Aenable probeoFF_on_on/
L__Functions about alarm and stand-by
LI_Other alarm inputs
L1Henable mc1 alarmoFF_on_on/
L1dmc1 alarm delay0194 4:20:1530:00dd hh:mm:ss
L2Henable mc2 alarmoFF_on_on/
L2dmc2 alarm delay0194 4:20:1530:00dd hh:mm:ss
L3Henable mc3 alarmoFF_on_on/
L3dmc3 alarm delay0194 4:20:1530:00dd hh:mm:ss
L4Henable external override alarmoFF_on_on/
L4doverride alarm delay0194 4:20:151:00:00dd hh:mm:ss
L5Henable digital input 5 alarm (compressor phase monitor / thermal overload relay)oFF_on_on/
L5ddigital input 5 alarm delay0194 4:20:151dd hh:mm:ss
Lo_On / stand-by status
10Looactual status: stand-by or onoFF_onoFF/
d__Functions about delays
dF_Delay from previous stop
dF4mc1 start delay0194 4:20:155:00dd hh:mm:ss
dF5mc2 start delay0194 4:20:1510:00dd hh:mm:ss
dF6mc3 start delay0194 4:20:1515:00dd hh:mm:ss
dS4mc1 stop delay0194 4:20:1545dd hh:mm:ss
dS5mc2 stop delay0194 4:20:1530dd hh:mm:ss
dS6mc3 stop delay0194 4:20:1515dd hh:mm:ss
P__Functions about master preferences
Pd_Functions about network address
PdMmaster address for global network communication02541/
PdSnumber of slaves connected to this master122/
Pb_Suction pressure broadcast
PbHenable suction pressure periodic broadcast over the PC netoFF_on_on/
Pbddelay between pressure broadcast messages0194 4:20:1530dd hh:mm:ss
Pbbdelay between latest received message and broadcasting start0194 4:20:152:00dd hh:mm:ss
I__Functions about input-output and machine state (read only)
IA_Analog inputs
IA1oil receiver temperature-55.0145.0-55.0°C
IA2discharge temperature-55.0145.0-55.0°C
IA3engine room temperature-55.0145.0-55.0°C
IA4oil pressure of mc10.030.00.0(gauge) bar
IA5oil pressure of mc20.030.00.0(gauge) bar
IA6oil pressure of mc30.030.00.0(gauge) bar
IA7high pressure (HP)0.030.00.0(gauge) bar
IA8low pressure (LP)0.030.00.0(gauge) bar
Id_Digital input
Id1mc1 hardware safetyoFF_onoFF/
Id2mc2 hardware safetyoFF_onoFF/
Id3mc3 hardware safetyoFF_onoFF/
Id4external overrideoFF_onoFF/
Id5phase software safetyoFF_onoFF/
OA_Analog output
LLAactual alarm - read only (0 means no alarm)02550/
OA1condenser02550/
OA2humidity - 4...20 mA02550/
Od_Digital output
11Od1condenser fan 2oFF_onoFF/
Od2condenser fan 3oFF_onoFF/
Od3condenser fan 4oFF_onoFF/
Od4compressor 1oFF_onoFF/
Od5compressor 2oFF_onoFF/
Od6compressor 3oFF_onoFF/
Od7oil receiver solenoid - eventually connected to OUT-3oFF_onoFF/
Od8alarm - eventually connected to OUT-3oFF_onoFF/
E__Functions about slave preferences
EY_Functions about display
EYYinput to show on display: 1=IA1 / 2=IA2 ...02551/

Parameter remarks

Nr. Remark
1When MLH<MLL,there is a delay of 10*(MLL-MLH) seconds on lp switch. Eventual pumpdown restart is over MLH+1 bar.
2Fixed time 120 s and manual reset.
3In 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 pump; connect HP probe on AN-6 and LP on AN-7.
4Caution! Selection by manual override forces compressor to run whatever the high and low pressure; no safety is left except hardware ones. In slave mode the output is used for partialization. In kriwan mode output is off for reset during stand-by.
5Caution! 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.
6After the delay elapsed, the override forces a load. Automatic reset.
7When speed regulation is off the fan is operated on-off.
8Caution! Speed regulation can cause fan fault or electronic board fault. Low and average minimum speed can increase the risk.
9During the first 10 seconds of speed regulation, the n1L is replaced by (n1H+n1L)/2.
10Passing from stand-by to on and at power on, there is a 5 second delay spent in a virtual stand-by.
11The minus sign on display ("-") signals that output is going to start after a delay.

Alarm list

Display Alarm
A01mc 1 alarmPressure switch, thermistors, or any other compressor safety device has disconnected.
A02mc 2 alarmPressure switch, thermistors, or any other compressor safety device has disconnected.
A03mc 3 alarmPressure switch, thermistors, or any other compressor safety device has disconnected.
A04external overrideThe external override contact is driving the controller.
A05mc phaseCompressor overload/thermal relay disconnected, or missing mains phase - manual reset.
A06mc 1 oil pressureOil differential pressure remained under minimum value for 120 seconds - manual reset.
A07mc 2 oil pressureOil differential pressure remained under minimum value for 120 seconds - manual reset.
A08mc 3 oil pressureOil differential pressure remained under minimum value for 120 seconds - manual reset.

Slave alarm list

Display Alarm
/noneThis instrument has no slave alarm.

Button list

Push button Function
B1esc - silenceExit without saving from any menu - alarm buzzer silence.
B2upUp navigation in the menu.
B3on / stand-byToggle between on and stand-by.
B4leftLeft navigation in the menu.
B5downDown navigation in the menu.
B6right - menu - setRight navigation in the menu - display and modify the set point - enter menu.

Led list

Led Function
L1compressor 1On during compressor run - blinking slowly during activation and deactivation delay.
L2compressor 2On during compressor run - blinking slowly during activation and deactivation delay.
L3compressor 3On during compressor run - blinking slowly during activation and deactivation delay.
L4condenser fan 1On during condenser run.
L5condenser fan 2On during condenser run.
L6condenser fan 3On during condenser run.
L7condenser fan 4On during condenser run.

Soft command list

Soft command Function

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 ML0, then confirm it.

Shortcut list

Buttons to press Shortcut description - keep pressed 5 seconds
/ This instrument has no further shortcuts.

Led and push button location

Led and push button legend.

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