Dixell UNIVERSAL–XR Installation Manual

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Page 1

UNIVERSAL–XR Unit of Measure Change Instructions

STEP 1

Install the new Universal-XR per the installation instructions included with the controller.

STEP 2

Turn on power,

THEN WITHIN 1 MINUTE COMPLETE STEPS 3, 4 AND 5.

STEP 3

Press the “SET” and “DOWN” key for 3 seconds and the controller will automatically recognise and adjust itself to the type of probes connected. (The display briefly shows tPd followed by ntC or PtC).

STEP 4

Press the “AUX/tC” key for 3 seconds and the setting of parameter tC is displayed. Use the UP or DOWN keys to adjust to required setting then confirm by pressing SET (see table 1 below).

STEP 5

Press SET for 3 seconds until the °C or °F icon starts to flash, then adjust the SET POINT using the UP or DOWN keys, then press SET again to confirm.

1. GENERAL DESCRIPTION

Model Universal-XR is a 71x29 mm format microprocessor based controller, it is available in 12/24Vac/dc, 120Vac or 230Vac,and is suitable for applications on high, medium or low temperature refrigeration units. It is provided with three relay outputs to control compressor, defrost - which can be both electrical or hot gas - and evaporator fans. It can work with PTC or NTC probes. Where defrost is being terminated by time, it can operate with just one thermostat probe. Where defrost is being terminated by temperature, it has an input for an evaporator probe(s). The Universal-XR is equipped with a flashing visual alarm and buzzer. Each instrument is fully configurable through special parameters that can be easily programmed through the keypad.

2. QUICK START UP PROCEDURE – Up and running in 5 easy steps

This Quick Start Up section is designed to get you up and running with the minimum of fuss. Just follow these 5 simple steps.

 Notes:

1. All probes must be of the same type, either PTC or NTC.

2. Probes must be at between --58 to 140°F for auto recognition to work;

3. If 1 minute expires before you have completed quick set up, either cycle the power OFF then ON to start the set up again or enter Pr2 as per the instructions and adjust your parameter settings manually (see Section 9).

Universal-XR 1/15 UXR10012015_REV1.4mm

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Table 1: parameter “tC” settings

TC=1 Heating

12/24Vac/dc use Terminals 4 & 5 for power supply

TC=2 Cooling, Off Cycle Defrost, Time Ended

12/24Vac/dc use Terminals 4 & 5 for power supply

TC=3 Cooling, Off Cycle Defrost, Temperature Ended

12/24Vac/dc use Terminals 4 & 5 for power supply

TC=4 Cooling, Off Cycle Defrost, Temperature Ended, Alarm Relay

12/24Vac/dc use Terminals 4 & 5 for power supply

TC=5 Cooling, Electric or Hot Gas Defrost Temperature Ended

12/24Vac/dc use Terminals 4 & 5 for power supply

TC6= Low Temp, Elec. Or Hot Gas Defrost, Temp. Ended, Fan

Control

12/24Vac/dc use Terminals 4 & 5 for power supply

TC7= Open Map to be Configured for any application

12/24Vac/dc use Terminals 4 & 5 for power supply

Actual Label on The Control in the Box.

Load1 is always Comp, or Heat.

Load2 is OAA and Load3 is OAb.

Parameter

Type of Control

Models Replaced

Required

probes

On / Off thermostat – Heating

XR110C, XR01CX, XR10C, XR10CX

x 1

Off cycle defrost (timed)

XR120C, XR02CX, XR20C, XR20CX

x 1

Off Cycle defrost time initiated / temperature terminated

XR120C, XR02CX, XR20C-E

x 2

Off Cycle defrost time initiated / temperature terminated, Alarm Relay

XR130C, XR03CX, XR30CX

x 2

Electrical / Hot Gas defrost, time initiated / temperature terminated

XR140C, XR04CX, XR40CX

x 2

Electrical / Hot Gas defrost, time initiated / temperature terminated + evap. Fan delay and control

XR160C, XR06CX, XR60CX

x 2

Full open map of parameters configure your own control

Your determination

1 to 3

Note: As you change parameter tC, defaults change and should be approximately correct for that application but we strongly recommend you check

all parameter default values listed in these instructions to ensure they suit your particular application and make further adjustments if necessary. Read the following sections for information about programming.

3. TYPICAL CONNECTIONS - FOR GENERAL GUIDANCE ONLY

Table 2: typical connections

Universal-XR 2/15 UXR10012015_REV1.4mm

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4. PARAMETER TABLE and factory default settings

WARNING!! Always switch the power OFF and then ON at the end of programming to update any parameter changes. Make sure you connect the correct number of probes to suit the setting of parameter tC. Failure to do this will cause probe alarms

tC setting

No. Probes

Type

1, 2

Room only

3, 4, 5, 6

Room + Evaporator 1

Room + Evaporator 1 + Display or AUX

Any probe alarms can be cleared by turning off / on the power

Description

Label

Adjustment Range

tC1

tC2

tC3

tC4

tC5

tC6

tC7

Type (category) of controller

1 = On / Off Thermostat

2 = Off cycle defrost

3 = Time / time defrost

4 = Time / temp defrost + alarm

5 = Time / temp defrost

6 = Time / temp defrost + fan delay

7 = Full Open Map Configurable

Set Point

LS to US

40.0°C; 104°F

2.0°C;

36°F

2.0°C;

36°F

2.0°C;

36°F

2.0°C;

36°F

2.0°C;

36°F

2.0°C; 36°F

Probe type

PTC=0 NTC=1

1 1 1 1 1 1 1

Differential

0.1 to 25.5C; 1 to 45°F

2.0°C; 2°F

2.0°C;

2°F

2.0°C;

2°F

2.0°C;

2°F

2.0°C; 2°F

Minimum Set Point limit

-55C to Set Point;

-67°F to Set Point

-50.0°C;

-58°F

-50.0°C;

-58°F

-50.0°C;

-58°F

-50.0°C;

-58°F

-50.0°C;

-58°F

-50.0°C;

-58°F

-50.0°C;

-58°F

Maximum Set Point limit

Set Point to 150C;

Set Point to 302°F

50.0°C; 122°F

50.0°C;

122°F

50.0°C;

122°F

50.0°C;

122°F

50.0°C;

122°F

50.0°C; 122°F

Anti-short cycle delay

0 to 50 min

1 1 1 1 1 1 0

Second compressor start delay

0 to 255 sec

Temperature alarm configuration

rE (0)= Relative to Set Point;

Ab (1) = Absolute

1 1 1 1 1 1 1

High temperature alarm

0 to 50C (Rel); ALL to 150C (Abs);

0 to 90F (Rel); ALL to 302C (Abs)

50.0°C; 122°F

50.0°C;

122°F

50.0°C;

122°F

50.0°C;

122°F

50.0°C;

122°F

50.0°C; 122°F

Low temperature alarm

0 to 50C (Rel); -55C to ALU (Abs);

0 to 90C (Rel); -67C to ALU (Abs)

-50.0°C;

-58°F

-50.0°C;

-58°F

-50.0°C;

-58°F

-50.0°C;

-58°F

-50.0°C;

-58°F

-50.0°C;

-58°F

-50.0°C;

-58°F

Temperature alarm delay

0 to 255 min

Delay of temperature alarm at start up

0 to 720 min

Outputs activation delay at start up

0 to 255 min

0 0 0 0 0 0 0

Thermostat override

0 to 990 min

0 0 0 0 0

Set point for continuous cycle

-55 to 150°C;

-67 to 302°F

2.0°C; 36°F

2.0°C;

36°F

2.0°C;

36°F

2.0°C;

36°F

2.0°C; 36°F

Defrost delay after thermostat override

0 to 255 min

2 2 2 2 2

Interval between defrosts

1 to 250 hours

4 6 6 6 4 4 Delay start of defrost

0 to 255 min

0 0 0 0 0 0 Maximum duration of defrost

0 to 255 min

Defrost termination temperature

-55 to 50C;

-67 to 122°F

8.0°C

46°F

8.0°C 46°F

Maximum duration of defrost (second evaporator)

0 to 255 min

Defrost termination temperature (second evaporator)

-55 to 50C;

-67 to 122°F

8.0°C 46°F

IMPORTANT: Always set parameter “tC” first. As you move “tC” between settings 1 to 7, all non-relevant parameters will be masked. After setting “tC”, it will be possible to modify all the other relevant parameters.

Once the program is completed you may want to save the parameter map to a Hot Key. If the “tC” is changed after final programming the parameters will be changed back to the default listed below.

Table 3: default controller parameters

Universal-XR 3/15 UXR10012015_REV1.4mm

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Description

Label

Adjustment Range

tC1

tC2

tC3

tC4

tC5

tC6

tC7

Display during defrost

Rt (0) = Real temp.

it (1) = Temp. at defrost start

sEt (2) = Set Point

dEF (3) = “DEF” label

dEG (4) = “DEG” label

3 3 3 3 3

Defrost display time out

0 to 255 min

Defrost type (forced)

El (0) = Electrical

rE (1) = Hot Gas

0 0 0

Drain down time

0 to 255 min

0 2 2

First defrost after power on

Y (0) = Immediate

N (1) = After normal interval

1 1 1 1 1

Evaporator fan operating mode

C_n (0) =On with Comp, off with defrost

O_n (1) =On regardless of comp, off w/

defrost

C_y (2) =On with comp, on with defrost

O_y (3) =Always on

Evaporator fan stop temperature

-55 to 50C;

-67 to 122°F

8°C; 46°F

Evaporator fan delay after defrost

0 to 255 min

Fan ON time

0 to 15 min

Fan Off time

0 to 15 min

Thermostat probe calibration

-12.0 to 12.0C;

-21 to 21F

0.0°C; 0°F

0.0°C;

0°F

0.0°C;

0°F

0.0°C;

0°F

0.0°C; 0°F

Evaporator probe presence

N (0) = evaporator probe not present

Y (1) = evaporator probe present

1 1 1 1 1

Evaporator probe calibration

-12.0 to 12.0C;

-21 to 21F

0.0°C; 0°F

0.0°C;

0°F

0.0°C;

0°F

0.0°C;

0°F

0.0°C; 0°F

Third probe presence

n (0) = third probe not present,

Y (1) = third probe present.

1 1 1 1 1 1 1

Third probe calibration

-12.0 to 12.0C;

-21 to 21F

0.0°C; 0°F

0.0°C;

0°F

0.0°C;

0°F

0.0°C;

0°F

0.0°C; 0°F

Display Resolution

Y (0) = With decimal point in C only

N (1) = No decimal point

1 1 1 1 1 1 1

Temperature measurement unit (°C/°F)

C (0) = Celsius

F (1) = Fahrenheit

1 1 1 1 1 1 1

Instrument display

P1 (0)= Thermostat probe P2 (1) = Evaporator probe

P3 (2) = Third probe

sEt (3) = SET-POINT

0 0 0 0 0 0 0

Display delay

0 to 20min0sec, res. 10sec

0 0 0 0 0 0 0

Type of action

Cl (0) = cooling

Ht (1) = heating

1 0 0

Compressor ON time with faulty probe

0 to 255 min

Compressor OFF time with faulty probe

0 to 255 min

Alarm muting configuration for buzzer & relay

n (0) = Mute buzzer only

Y (1) = Mute buzzer & relay

1 1 1 1 1 1 1

Second Digital input configuration

dEF(0) = Start defrost

dor (1)= Door switch

AUS (2) = Auxiliary relay

ES (3) = Energy saving

onF (4) = Remote On/OFF

EAl (5) = Generic alarm

bAl (6) = Serious alarm

5 5 5 5 5 5 5

Second Digital input polarity

Cl (0) = Closed circuit

oP (1) = Open circuit

0 0 0 0 0 0 0

Digital input 2 delay

0 to 255 min

0 0 0 0 0 0 0

Door open – compressor / fan status

No (0) = No change

FAn (1) = Fan off

CPr (2) = Compressor off

F_C (3) = Compressor & Fan off

0 0 0 0 0 0 0

Defrost relay configuration

OAA

Alr (0) = Alarm;

db (1) = Dead Band;

AUS (2) = Auxiliary;

CP2 (3) = Second compressor output;

liG (4) = Light output;

dF2 (5) = Second defrost output.

dEF (6) =1st Defrost output

Fan (7) =Fan output

6 6 6

Universal-XR 4/15 UXR10012015_REV1.4mm

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Description

Label

Adjustment Range

tC1

tC2

tC3

tC4

tC5

tC6

tC7

Auxiliary relay configuration

Alr (0) = Alarm;

db (1) = Dead Band;

AUS (2) = Auxiliary;

CP2 (3) = Second compressor output;

liG (4) = Light output;

dF2 (5) = Second defrost output.

dEF (6) =1st Defrost output

Fan (7) =Fan output

0 0 0 0 7 7 7

Alarm relay polarity

Cl (0)= [11 -12] closed with alarm

oP (1) = [11 -12] open with alarm

0 0 0 0 0 0 0

Exclude temperature alarm - door open

0 to 255 min

Restart regulation with door open alarm

n (0) = No

Y (1) = Yes

0 0 0 0 0 0 0

Probe selection for Condenser Alarm

AP2

nP (0) =No Probe selected

P1 (1) =Probe 1 P2 (2) =Probe 2

P3 (3) =Probe3

0 0 0 0 0 0 0

Low temperature alarm of condenser

-55 to 150°C;

-67 to 302°F

-40°C;

-40°F

-40°C;

-40°F

-40°C;

-40°F

-40°C;

-40°F

-40°C;

-40°F

-40°C;

-40°F

-40°C;

-40°F

High temperature alarm of condenser

-55 to 150°C;

-67 to 302°F

110°C;

230°F

110°C;

230°F

110°C;

230°F

110°C;

230°F

110°C;

230°F

110°C;

230°F

110°C;

230°F

Differential for temperature condenser alarm recovery

0.1 to 25.5°C; 1 to 45°F

5°C;

5°F

5°C;

5°F

5°C;

5°F

5°C;

5°F

5°C;

5°F

5°C;

5°F

5°C;

5°F

Condenser temperature alarm delay

0 to 254 min, 255 = nU

Condenser temperature alarm exclusion at start up

0 to 720 min, res.10min

Compressor off with low temperature alarm of condenser

n (0) = No

y (1) = Yes

0 0 0 0 0 0 0

Compressor off with high temperature alarm of condenser

n (0) = No

y (1) = Yes

0 0 0 0 0 0 0

Temperature deviation from normal Set Point during Energy Saving

-30.0 to 30°C;

-54 to 54°F

0°C;

0°F

0°C;

0°F

0°C;

0°F

0°C;

0°F

0°C;

0°F

0°C;

0°F

0°C;

0°F

ON / OFF key enabling

nU (0) = Disabled OFF(1) = Enabled

ES (2) = Energy saving

0 0 0 0 0 0 0

Buzzer enabling

n (0) = Disabled Y (1) = Enabled

1 1 1 1 1 1 1

Parameter table

For factory use only

- - - - - - -

Software release number

Read only

- - - - - - -

Evaporator probe temperature

Read only

- - -

Third probe temperature

Read only

- - - - - - -

READ ON IF YOU NEED MORE DETAIL

Display visualisation

Description

Type of Controller: tells the Universal-XR which type of controller it will be operating as.

1 = on/off Heating thermostat – 1 relay & 1 probe; 2 = Combined thermostat with off cycle defrost timer – 1 relay & 1 probe; 3 = Combined thermostat with time initiated & time terminated defrost – 2 relays & 2 probe; 4 = Combined thermostat with time initiated & temperature terminated defrost – 2 relays & 2 probes; alarm 5 = Combined thermostat with time initiated, temperature terminated defrost + 2 relays & 2 probes; defrost 6 = Combined thermostat with time initiated, temperatures terminated defrost + evaporator fans control with delay after defrost – 3 relays & 3 probes; 7 = Combined thermostat with time initiated, temperatures terminated defrost + evaporator fans control with delay after defrost – 3 relays & 3 probes. Fully open map

Probe Type: configures the controller to work with PTC or NTC probes. 0= ptC = PTC, 1= ntC = NTC.

Differential: (1 to 50) sets the degrees above Set Point at which the compressor cuts in. Note: when tC = 1 (heating applications) the tC value is automatically set below the Set Point. If the temperature decreases and reaches set point minus differential the regulation output is activated and

then turned off when the temperature reaches the set point value again.

Minimum set point limit: (-55°C to SET or -67°F to SET) sets the lower limit of set point adjustment.

Maximum set point limit: (SET to 150°C or SET to 302°F) sets the upper limit of set point adjustment.

Anti-short cycle delay: (0 to 50min) minimum interval between the compressor stop and the next possible restart.

5. PARAMETERS – THEIR FUNCTIONS IN DETAIL

Table 4: controller parameters in detail

Universal-XR 5/15 UXR10012015_REV1.4mm

Page 6

Second compressor start delay: (0 to 255sec)

Temperature alarm configuration:

rE = Related to Set Point;

Ab = Absolute. Note: Relative means alarms are linked to the Set Point and will follow it if it is adjusted. In this case ALU & ALL set the temp over & under Set Point for alarm. Absolute means ALU & ALL are fixed alarm temperatures, which are not affected by any Set Point adjustment.

High temperature alarm:

ALC = rE→ [0 to 50°C] or [0 to 90°F];

ALC = Ab → [ALL to 150°C] or [ALL to 302°F].

Low temperature alarm:

ALC = rE → [0 to 50°C] or [0 to 90°F];

ALC = Ab → [-55°C to ALU] or [-67 to ALU].

Temperature alarm delay: (0 to 255min) time interval between an alarm condition occurring and the alarm is signalling.

Delay of temperature alarm at start-up: (from 0 to 720min; res. 10min) time delay of any temperature alarm during pull down following “power on”.

Outputs activation delay at start up: (0 to 255min) time delay before any output relay activates following “power on”.

Thermostat override: (0 to 990min; res. 10min) period during which the compressor will run continuously, regardless of temperature. Setting this parameter to 0 disables this function.

Set point for continuous cycle: (-55 to 150 °C or -67 to 302°F) it sets the set point used during the continuous cycle.

Defrost delay after fast freezing: (0 to 255min) time interval between the end of the thermostat override period and the start of the following defrost related to it.

Interval between defrosts: (0 to 255hours) time interval between the beginning of two consecutive defrosts.

Delay start of defrost: (0 to 255min) delay between reaching the defrost interval time (as defined by parameter idF) and when a defrost cycle actually starts. Used to stagger defrosts between multiple systems.

(Maximum) duration of defrost: (0 to 255min) time duration of a defrost cycle when only one probe is in use, or defrost time out override when second (evaporator) probe is in use. Set it to zero to disable defrost cycles.

Defrost termination temperature: (-55 to 50°C or -67 to 122°F) sets the defrost termination temperature. Measured by the evaporator probe.

(Maximum) length for second defrost: (0 to 255min) when P3P = 0, (not evaporator probe: timed defrost) it sets the defrost duration, when P3P = 1 (defrost end based on temperature) it sets the

maximum length for defrost. *** Only if being used with tC7***

Note: The P3 probe will be automatically set as second evaporator probe by the tC parameter.

Second termination temperature: (-55 to 50°C or -67 to 122°F) sets the temperature measured by the second evaporator probe (P3), which causes the end of defrost.

Display during defrost:

0= rt = real temperature;

1= it = temperature at defrost start;

2= sEt = set point;

3= dEF = dEF label;

4= dEG = dEG label.

Defrost display time out: (0 to 250min) after a defrost, the controller will revert to current temperature display when the temperature is back down within its normal working range, or after the time set in this parameter, whichever is the sooner.

Defrost type:

0= El= electrical heater;

1= rE = hot gas, compressor runs during defrost.

Drain down time: (0 to 255min) drain down time. Runs concurrently with Fnd (Fan delay after defrost time).Both fan and compressor are off during this time period.

First defrost after power-on:

0= Y = immediately;

1= n = after the idF interval time.

Fan operating mode:

0= C_n = cycles on/off with the compressor, OFF during defrost;

1= O_n= continuous mode, OFF during defrost;

2= C_Y = cycles on/off with the compressor, ON during defrost;

3= O_Y = continuous mode, ON during defrost;

Fan stop temperature: (-55 to 50°C or -67 to 122°F) temperature above which the evaporator fan stops (during the normal refrigerat ion cycle).

Universal-XR 6/15 UXR10012015_REV1.4mm

Page 7

Fan delay after defrost: (0 to 255min) the time interval between the end of a defrost cycle and evaporator fans starting. Runs concurrently with Fdt (Drain down time). Always keep Fnd longer that Fdt.

Fan ON time: (0 to 15min) used to set an On/Off cycle of the evaporator fans while the compressor is off. With FnC = 0 or FnC = 2, it sets the evaporator fan ON cycling time when the compressor is OFF. With Fon = 0 and FoF ≠ 0, the fans are always off. With Fon = 0 and FoF = 0 the fans are always off.

Fan OFF time: (0 to 15min) used to set an On/Off cycle of the evaporator fans while the compressor is off. With FnC = 0 or FnC = 2, it sets the evaporator fan OFF cycling time when the compressor is OFF. With Fon = 0 and FoF ≠ 0, the fans are always off. With Fon = 0 and FoF = 0 the fans are always off.

Thermostat probe calibration: (-12.0 to 12.0°C or -21 to 21°F) adjustment for thermostat probe (Room) offset.

Evaporator probe presence (Evap on the label):

0= n = not present;

1= Y = present.

Evaporator probe calibration: (-12.0 to 12.0°C or -21 to 21°F) adjustment for evaporator probe offset.

Third probe presence (probe named Evap.2 on the label):

0= n = not present, the third input (the one signed with label “D.I. / Pb3”) Input operates as digital input;

1= Y = present, the third input (the one signed with label “D.I. / Pb3”) Input operates as third probe.

Third probe calibration: (-12.0 to 12.0°C or -21 to 21°F) adjustment for third probe offset.

Display resolution (Only available in Celsius):

0= dE = with decimal point;

1= in = without decimal point.

Temperature measurement unit:

0= °C = Celsius;

1= °F = Fahrenheit. Warning: If you alter the setting of parameter rES ( decimal point on/off ) re-check the settings of all temperature related parameters Set Point, HY, LS, US, ALU, ALL, dtE, FSt, ot & oE, as they can be effected.

Probe for Display:

0= P1 = Thermostat probe;

1= P2 = Evaporator probe;

2= P3 = Third probe;

3= sEt = DISPLAY ONLY SHOWS THE SET-POINT. THE ACTUAL TEMPERATURE CAN BE SEEN BY PRESSING THE SET BUTTON.

Display delay: (0 ÷ 20min0sec; resolution 10 sec) when the temperature increases, the display is updated of 1°C or 1°F after this time.

Type of action: 0= Cl = cooling; 1= Ht = heating.

Compressor ON time with faulty probe: (0 to 255min) If there is a P1 probe failure the controller will automatically cycle the compressor on/off according to Con & CoF to maintain basic cooling. Con is the compressor “ON” time.

Compressor OFF time with faulty probe: (0 to 255min) If there is a P1 probe failure the controller will automatically cycle the compressor on/off according to Con & CoF to maintain basic cooling. CoF is the compressor “OFF” time.

Alarm muting:

0= n = Alarm relay remains active when alarm buzzer is muted;

1= Y = Alarm relay is cancelled when alarm buzzer is muted.

Second digital input operating mode: configures the second digital input function:

0 = Starts a defrost;

1 = Input from a door switch (see parameter odC);

2 = Activates the auxiliary relay;

3 = Starts Energy Saving (Control Point becomes Set Point +/- value in HES);

4 = Remote On/OFF (puts the controller into standby);

5 = Generic external alarm (normal regulation continues);

6 = Serious external alarm (regulation is stopped).

Configurable second digital input polarity:

0 = the digital input is activated by closing the circuit;

1 = the digital input is activated by opening the circuit.

Time interval/delay for digital input 2 alarm: (0 to 255min) it defines the time delay between the detection and the subsequent signalling of the alarm.

Compressor and fan status when open door:

0= no = normal;

1= FAn = Fan OFF;

2= CPr= Compressor OFF;

3= F_C = Compressor and fan OFF.

Universal-XR 7/15 UXR10012015_REV1.4mm

Page 8

Defrost relay configuration: Only on tC=7

0= Alr = Alarm;

1= db = Dead Band;

2= AUS = Auxiliary;

3= Cp2 = Second compressor output;

4= LIG = Light output;

5= dF2 = Second defrost output.

Auxiliary relay configuration:

1= Alr = Alarm;

2= db = Dead Band;

3= AUS = Auxiliary;

4= Cp2 = Second compressor output;

5= LIG = Light output;

6= dF2 = Second defrost output.

Alarm relay polarity:

0= CL= contact [13 – 14] closed with alarm;

1= oP = contact [13 – 14] open with alarm.

Temperature alarm exclusion with door open: 0 to 255min.

Regulation restart with door open alarm:

0= n = no;

1= Y = yes, regulation will restart after “door open” alarms.

Probe selection for Condenser Alarm :

0= nP=No Probe selected 1= P1=Probe 1

2= P2=Probe 2

3= P3=Probe3 *normally P3 would be used*

Low temperature alarm of condenser: (-55 to 150°C or -67 to 302°F) when this temperature is reached, the HA2 alarm will be raised (after the Ad2 delay time has expired).

High temperature alarm of condenser: (-55 to 150°C or -67 to 302°F) when this temperature is reached, the LA2 alarm will be raised (after the Ad2 delay time has expired).

Differential for temperature condenser alarm recovery: 0.1 to 25.5°C or 1 to 45°F.

Condenser temperature alarm delay: (0 to 255min) time interval between the detection of an alarm condition at the condenser and the relative alarm signalling.

Condenser temperature alarm exclusion during start-up: (0 to 720min, resolution 10min).

Compressor off when a low temperature alarm of the condenser is active:

0= n = the compressor keeps on working if a low temperature alarm at the condenser is active;

1= Y = the compressor is switched off while the low temperature alarm is active. The regulation will restart after elapsing AC delay time.

Compressor off when an high temperature alarm of the condenser is active:

0= n = the compressor keeps on working if a low temperature alarm at the condenser is active;

1= Y = the compressor is switched off while the low temperature alarm is active. The regulation will restart after elapsing AC delay time.

Temperature set point change during the Energy Saving cycle: (-30.0 to 30.0°C or -54 to 54°F) sets the deviation from the normal set point during the Energy Saving cycle.

ON / OFF key enabling:

0= nu= key functionality disabled;

1= OFF = On Off function enabled;

2= ES = Energy Saving function enabled.

Buzzer enabling:

0= n = disabled;

1= Y = enabled.

Parameter table: read only – for factory use.

Software release: read only – shows the software release.

Evaporator probe: shows the current temperature sensed by the evaporator probe.

Third probe temperature: shows the current temperature sensed by the third probe.

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6. BUTTONS AND THEIR FUNCTIONS

BUTTON

FUNCTION

Type Controller menu: keep this button pressed for at least 3 sec within 1 min after power on to enter the “Type Controller Menu” (tC). AUX output control: Switches the AUX relay output (if enabled as such).

Manual Defrost: keep this button pressed for 3 s to start a manual defrost cycle. The defrost icon will illuminate. (Not possible if parameter tC = 1 ).

Display current set point: after pressing and releasing this button, the set point will be displayed for 5 sec. This will not allow the set point to

be altered. Changing set point value: keep this button pressed for at least 2 sec. Set point change mode is entered indicated by the small led’s flashing. Change the set point using the UP and DOWN buttons. The new value can be stored either by pressing SET button (the instrument restores temperature display) or by waiting the exit time-out to expire (15 sec).

(UP): to see the max stored temperature; in programming mode it browses the parameter codes or increases the displayed value.

(DOWN): to see the min stored temperature; in programming mode it browses the parameter codes or decreases the displayed value.

Keep press 3sec just after powering on the device (and within the first 60sec) to start automatic probe recognising.

Energy Saving: Allows the control to use the HES offset parameter to change the set point.

COMBINATION

FUNCTION

Lock & unlock the keyboard: keeping both buttons pressed for 3 sec will lock or unlock the keyboard. The display will flash PoF or Pon for a few seconds to confirm locking or unlocking respectively.

Enter programming mode: keep both buttons pressed for 3 sec, release them and then press them again for 8 sec. The first label of Pr2 level will be displayed.

Exit programming mode: press together to return to normal display.

As well as the main digital display, there are some small icons on the front panel. These are used to indicate the status of the loads controlled by the instrument. Each icon function is described in the following table.

6.1 SINGLE BUTTON FUNCTIONS

Table 5: single button functions

6.2 BUTTON COMBINATION FUNCTIONS

Table 6: button combination functions

7. PROGRAMMING MODE

7.1 USER PROGRAMMING LEVEL – PR1

To enter programming level Pr1 (user programming level), keep both SET and DOWN buttons pressed for 3 sec. The first parameter label will appear. Browse parameter list by using the UP or DOWN keys. Press SET to see a parameter’s current value and UP or DOWN keys to alter its value. Press SET to confirm change (the display will blink for 3 sec and then the next parameter will appear) or by waiting for the menu timeout to expire (15 sec). If no parameter is available for changes in Pr1 level, a noP label will be show.

7.2 PROTECTED PROGRAMMING LEVEL – PR2 (ALL VISIBLE PARAMETERS CAN BE FOUND HERE)

First enter Pr1 level (as described above) then with any parameter label displayed keep both SET and DOWN buttons pressed for 8 sec. The first parameter label will appear. Browse parameter list by using the UP or DOWN keys. Press SET to see a parameter’s current value and UP or DOWN keys to alter its value. Press SET to confirm change (the display will blink for 3 sec and then the next parameter will appear) or by waiting for the menu timeout to expire (15 sec). From Pr2 level it is also possible to add or remove any parameter to / from Pr1 by pressing both SET & DOWN while its label is displayed. Accessibility of any particular parameter via Pr1 level is confirmed by the alarm LED lighting up while its label is displayed

WARNING: if no button is pressed for 15 sec, any modified value will be stored into memory and the controller will return to the normal display mode.

8. OTHER FEATURES OF THE UNIVERSAL-XR

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Table 7: display signalling description

ICON

FUNCTION

MEANING

Light (AUX) output enabled. ON

Cooling enabled.

FLASHING

Anti-short cycle delay in progress.

Fan enabled.

FLASHING

Delay time on fan activation is running (Fnd > 0)

Defrost in progress.

FLASHING

Drip time in progress (Fdt > 0) or delay on start defrosting is running (dSd > 0).

Auxiliary output activated.

Energy Saving activated.

Thermostat override enabled.

ALARM signal: when in programming mode and in Pr2 level, this icon lights up notifying this parameter is also accessible in the Pr1 level.

All measurement units are in Celsius degrees.

FLASHING

Programming mode.

All measurement units are in Fahrenheit degrees.

FLASHING

Programming mode.

tC parameter value

Action

No defrost

2 or 3

Off cycle defrost by timer

4, 5, 6 or 7

Forced type of defrost: Electrical or Hot Gas

FnC

parameter

Action

C_n

Fans will cycle ON and OFF with the compressor and be off during defrost cycle.

O_n

Fans will run continuously, but be off during defrost cycle.

C_Y

Will switch ON and OFF with the compressor and be on during defrost cycle (*).

O_Y

Fans will run continuously and be on during defrost cycle (*).

9. THERMOSTAT OVERRIDE ( not available when parameter tC = 1)

For rapid chilling or freezing, the thermostat can be overridden by pressing the UP button until the icon lights up. The compressor will run in continuous mode, for the time period set in parameter CCt. Normal operation will then resume automatically after the CCt is exhausted or when the

CCS is exhausted (Continuous Cycle Set Point). The cycle can also be terminated manually by pressing the UP button again for about 3 seconds.

10. DEFROST TYPES

- tdF = 0: defrost is electrical;

- tdF = 1: defrost is by hot gas.

11. EVAPORATOR FAN CONTROL (only when parameter tC = 6 or 7)

The fan control mode is selected by means of the “FnC” parameter:

(*) Note: Fans will stop if the temperature value set in parameter “FSt” is exceeded.

Parameter FSt sets the fan stop temperature. This is the maximum temperature, detected by the evaporator probe, above which the evaporator fans will stop. Leave FSt above ambient temperature during commissioning to avoid fan short cycle. After finishing the defrost phase, there is a stand still drain time, set by parameter Fdt. When this period has expired, the refrigeration cycle commence but the evaporator fans remain off until Fnd (fan delay) times out.

12. SPECIAL APPLICATIONS – DEAD BAND CONTROL

12.1 DEAD BAND CONTROL (COOLING & HEATING) tc=7

With [oAb = db], the compressor relay controls cooling as normal but the 3rd (auxiliary/ fan) relay is used to control a heater. The value entered in

parameter HY will now be set equal on both sides of the SET POINT. Example: if [HY = 1°C] that will create a 2°C Dead Band.

At [SET POINT + HY], cooling switches on. At [SET POINT – HY], heating switches on. Either cooling or heating switch off when temperature returns to SET POINT.

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13. ALARMS

Message

Message – Mode

Cause

Outputs

Flashing

Data or memory failure

Alarm output ON; Other outputs unchanged.

Flashing

Thermostat probe failure

Alarm output ON; Compressor output according to parameters Con and CoF.