Porkka F Technical And Service Manual page 8

Technical and Service manual
Inventus upright refrigerators and freezers
User manual - Control unit XW70K AND D50K
12 HOW TO: USE OF THE PROGRAMMING "HOT KEY"
12.1 PROGRAM A HOT-KEY FROM AN INSTRUMENT (UPLOAD)
1. Program one controller with the front keypad.
2. When the controller is ON, insert the "HOT-KEY" and push UP button; the "uPL" message
appears followed a by a flashing "End" label.
3. Push SET button and the "End" will stop flashing.
4. Turn OFF the instrument, remove the "HOT-KEY" and then turn it ON again.
NOTE: the "Err" message appears in case of a failed programming operation. In this case push again
button if you want to restart the upload again or remove the "HOT-KEY" to abort the operation.
12.2 PROGRAM AN INSTRUMENT BY USING A HOT-KEY (DOWNLOAD)
1. Turn OFF the instrument.
2. Insert a pre-programmed "HOT-KEY" into the 5-PIN receptacle and then turn the Controller
ON.
3. The parameter list of the "HOT-KEY" will be automatically downloaded into the Controller
memory. The "doL" message will blink followed a by a flashing "End" label.
4. After 10 seconds the instrument will restart working with the new parameters.
5. Remove the "HOT-KEY".
NOTE: the message "Err" is displayed for failed programming. In this case turn the unit off and then on
if you want to restart the download again or remove the "HOT-KEY" to abort the operation.
13 ALARM SIGNALS
Message Cause Outputs
P1 Thermostat probe failure Alarm output ON; Compressor output according to
parameters Con and CoF.
P2 Second probe failure Alarm output ON; Other outputs unchanged
P3 Third probe failure Alarm output ON; Other outputs unchanged
P4 Fourth probe failure Alarm output ON; Other outputs unchanged
HA Maximum temperature alarm Alarm output ON; Other outputs unchanged
LA Minimum temperature alarm Alarm output ON; Other outputs unchanged
HA2 Condenser high temperature It depends on the AC2 parameter
LA2 Condenser low temperature It depends on the bLL parameter
dA Door open Compressor and fans restarts
EA External alarm Output unchanged.
CA Serious external alarm (i1F=bAL) All outputs OFF.
CA Pressure switch alarm (i1F=PAL) All outputs OFF
EE Data or memory failure Alarm output ON; Other outputs unchanged
noL No communication between base Unchanged
and keyboard
The alarm message is displayed until the alarm condition is recovery.
All the alarm messages are showed alternating with the room temperature except for the "P1" which is
flashing.
To reset the "EE" alarm and restart the normal functioning press any key, the "rSt" message is
displayed for about 3 sec.
13.1 SILENCING BUZZER
Once the alarm signal is detected the buzzer can be silenced by pressing any key. Buzzer is mounted
in the keyboard and it is an option.
13.2 "EE" ALARM
The dIXEL instruments are provided with an internal check for the data integrity. The "EE" alarm
flashes when a failure in the memory data occurs. In such cases the alarm output is enabled.
13.3 ALARM RECOVERY
Probe alarms: "P1" (probe1 faulty), "P2", "P3" and "P4"; they automatically stop 10 sec after the probe
restarts normal operation. Check connections before replacing the probe.
Temperature alarms "HA", "LA" "HA2" and "LA2" automatically stop as soon as the temperature
returns to normal values.
Alarms "EA" and "CA" (with i1F=bAL) recover as soon as the digital input is disabled.
Alarm "CA" (with i1F=PAL) recovers only by switching off and on the instrument.
14 Technical data
Keyboards
Housing: self extinguishing ABS
Case: open board: facia 35x86 mm; depth 9mm
Mounting: panel mounting
Protection: IP00;
Connections: pins connections type JST EHR-2
Power supply: from XW70K power module
Display: 3 digits, red LED, 18 mm high
Optional output: buzzer.
Power module XW70K
Case: 8 DN: 140X176X148
Connections: Screw terminal block 2.5 mm 2 heat-resistant wiring and 6.3mm Faston

Power supply: 230Vac or. 110Vac 10% or 24Vac

Power absorption: 10VA max
Inputs: 4 NTC or PTC probes
Digital inputs: 1 free voltage
Relay outputs: Total current on loads MAX. 20A
Compressor/Valve: relay SPST 8(3) A, 250Vac
Fan: relay SPST 16(5) A, 250Vac
Defrost: relay SPST 20(8) A, 250Vac
Light : relay SPST 16(5) A, 250Vac
On/off : TRIAC 2A max, 250Vac
Serial output: TTL standard
Communication protocol: Modbus - RTU
Data storing: on the non-volatile memory (EEPROM)
1598027800 XW70K GB PKK R1.0 10.12.2013doc.docx
Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Kind of action: 1B
Pollution degree: normal
Software class: A
Operating temperature: 0 to 60°C (32 to 140°F)
Storage temperature: -25 to 60°C (-13 to 140°F)
Relative humidity: 20 to 85% (no condensing)
Measuring and regulation range:
NTC probe: -40 to 110°C (-58 to 230°F)
PTC probe: -50 to 150°C (-58 to 302°F)
Resolution: 0.1°C or 1°C or 1°F (selectable)
Accuracy (ambient temp. 25°C): ±0.5°C ±1 digit
15 CONNECTIONS
15.1 XW70K
16 Default setting values
Label Name
REGULATION
SEt Set point
Hy Differential
LS Minimum set point
US Maximum set point
ot Thermostat probe calibration
P2P Second probe presence
oE Second probe calibration
P3P Third probe presence
o3 Third probe calibration
P4P Fourth probe presence
o4 Fourth probe calibration
Outputs activation delay at start
odS
up
AC Anti-short cycle delay
Ac1 Second compressor delay
rtr P1-P2 percentage for regulation
Compressor ON time during fast
CCt
freezing
CCS Set point for continuous cycle
Compressor ON time with faulty
Con
probe
Compressor OFF time with faulty
CoF
probe
DISPLAY
CF Temperature measurement unit
rES Resolution (integer/decimal point)
rEd Remote display
dLy Display temperature delay
dtr P1-P2 percentage for disply
DEFROST
tdF Defrost type
Probe selection for defrost
dFP
termination
dtE Defrost termination temperature
idF Interval between defrost cycles
MdF (Maximum) length for 1° defrost
dSd Start defrost delay
dFd Displaying during defrost
dAd MAX display delay after defrost
Fdt Draining time
dPo First defrost after start up
dAF Defrost delay after fast freezing
FnC Fans operating mode
Fnd Fans delay after defrost
Differential of temperature for
FCt
forced activation of fans
FSt Fans stop temperature
Fon Fan on time with compressor off
FoF Fan off time with compressor off
Probe selection for fan
FAP
management
XW70K
8
Range Default Level
LS; US
-5.0 - - -
[0.1 to 25.5°C]
2.0 Pr1
[1 to 45°F]
[-55.0°C to SET]
-50.0 Pr2
[-67°F to SET]
[SET to 150°C]
110 Pr2
[SET to 302°F]
[-12 to 12°C]
0.0 Pr1
[-21 to 21°F]
n=not present; Y=pres.
Y Pr1
[-12 to 12°C]
0.0 Pr2
[-21 to 21°F]
n=not present; Y=pres.
n Pr2
[-12 to 12°C]
0 Pr2
[-21 to 21°F]
n=not present; Y=pres.
n Pr2
[-12 to 12°C]
0 Pr2
[-21 to 21°F]
0 to 255 min
0 Pr2
0 to 30 min
1 Pr1
0 to 255 sec
5 Pr2
0 to 100 (100=P1 , 0=P2)
100 Pr2
0.0 to 23h50min, res. 10 min
0.0 Pr2
[-55.0 to 150.0°C]
-5 Pr2
[-67 to 302°F]
0 to 255 min
15 Pr2
0 to 255 min
30 Pr2
°C; °F
°C Pr2
in; dE
dE Pr1
P1; dtr
P1 Pr2
0.0 to 20min00sec, res. 10 sec
0 Pr2
1; 100
50 Pr2
EL; in
EL Pr1
nP; P1; P2; P3; P4
P2 Pr2
[-50.0 to 150°C]
8.0 Pr1
[-58 to 302°F]
1 to 120 h
6 Pr1
0 to 255 min
30 Pr1
0 to 99 min
0 Pr2
rt; it; SEt; dEF; dEG
it Pr2
0 to 255 min
30 Pr2
0 to 60 min
0 Pr2
n; Y
n Pr2
0.0 to 23h50min, res. 10 min
0.0 Pr2
FANS
C-n; C-y; O-n; O-y
o-n Pr1
0 to 255 min
10 Pr1
[0 to 50°C]
10 Pr2
[0 to 90°F]
[-55.0 to 50°C]
2 Pr1
[-67 to 302°F]
0 to 15 min
0 Pr2
0 to 15 min
0 Pr2
nP; P1; P2; P3; P4
P2 Pr2
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