dixell XM470K Installing And Operating Instructions

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Page 1

Dixell

1. GENERAL WARNING

Installing and Operating Instructions

XM470K

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1592013010

3.4 AUXILIARY OUTPUT

The auxiliary output is switch ON and OFF by means of the corresponding button on the keyboard.

4. KEYBOARDS

There are two kind of keyboard available for the XM470K controller:.

1.1 PLEASE READ BEFORE USING THIS MANUAL

• This manual is part of the product and should be kept near the instrument for easy and quick reference.

• The instrument shall not be used for purposes different from those described hereunder. It cannot be used as a safety device.

• Check the application limits before proceeding.

1.2

• Check the supply voltage is correct before connecting the instrument.

• Do not expose to water or moisture: use the controller only within the operating limit s avoiding

• Warning: disconnect all electrical connections before any kind of maintenance.

• Fit the probe where it is not accessible by the End User. The instrument must not be opened.

• In case of failure or faulty operation send the instrument back to the distributor or to “Dixell s.r.l.”

• Consider the maximum current which can be applied to each relay (see Technical Data).

• Ensure that the wires for probes, loads and the power supply are separated and far enough from

• In case of applications in industrial environments, the use of mains filters (our mod. FT1) in parallel

SAF

ETY PRECAUTIONS

sudden temperature changes with high atmospheric humidity to prevent formation of condensation

(see address) with a detailed description of the fault.

each other, without crossing or intertwining. with inductive loads could be useful.

2. GENERAL DESCRIPTION

Model XM470K is microprocessor based controllers suitable for applications on medium or low temperature multiplexed cabinets made of up to 5 units. It can be inserted in a LAN of up t o 5 different sections which can operate, depending on the programming, as stand alone co ntrollers or following th e commands coming from one of the other sections. XM470K is provided with five relay outputs to cont rol the solenoid valve, defrost - which can be either electrical or hot gas - the evaporator fans, the light s, and an auxiliary output. They are also provided with three NTC probe inputs, one for temperature control, one to control the defrost end temperature of the evaporator and t he third, optional, for the display. There are two digital inputs (free contact) one for the start of an energy saving cycle and one fully configurable by parameter. Two LAN output allows an easy connection between the controllers and a TTL connector for quick programming by means of an Hot Key is also available. Direct serial output RS485 ModBUS-RTU compatible and internal RTC are available as options.

3. CONTROLLING LOADS

3.1 THE SOLENOID VALVE

The regulation is performed according to the temperature measured by the thermostat probe wit h a positive differential from the set point: if the temperature increases and reaches se t point plus differential the solenoid valve is opened and then closed when the temperature reaches the set point value again. In case of fault in the thermostat probe the opening and closing of the solenoid valve are timed through parameters “COn” and “COF”.

3.2 DEFROST

Two defrost modes are available through the “tdF” parameter: defrost with electrical heater and hot gas defrost. The defrost interval is control by means of parameter “EdF”: (EdF = rtc) the defrost is made in real time depending on the hours set in the parameters Ld1..Ld8 on workdays and in Sd1…Sd8 in holidays; (EdF = in) the defrost is made every “IdF” time, (EdF=Sd) the interval “IdF” is calculate through Smart Defrost algorithm (only when the SOLENOID VALVE is ON and the evaporator temperature is bigger than “SdF” parameter). At the end of defrost the drip time is controlled through the “Fdt” parameter. The starting of a defrost cycle can be operated locally (manual activation by means of the keyboard or digital input or end of interval time) or the command can come from the Master defrost unit of the LAN. In this case the controller will operate the defrost cycle following the parameters it has programmed but, at the end of the drip time, will wait that all the other controllers of the LAN finish their defrost cycle before to re-start the normal regulation of the temperature. Every time any of the controller of the LAN begin a defrost cycle it issue the command into the network making all the other controllers start their own cycle. This allows a perfect synchronisation of the defrost in the whole multiplexed cabinet

3.3 CONTROL OF EVAPORATOR FANS

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

C-n = running with the solenoid valve, OFF during the defrost; C-y = running with the solenoid valve, ON during the defrost; O-n = continuous mode, OFF during the defrost; O-y = continuous mode, ON during the defrost;

An additional parameter “FSt” provides the setting of temperature, detected by the evaporator probe, above which the fans are always OFF. This can be used to make sure circulation of air only if his temperature is lower than set in “FSt”.

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T840: 8 Keys, horizontal shape (185x38mm).

V840: 8 Keys, vertical shape (64x100mm).

To display and modify target set point; in programming mode it selects a parameter or confirm an operation. By holding it pressed for 3s when max or min temperature is displayed it will be erased. By pressing it when the current time is displayed, it allows the User to re-set the current time and three holidays.

To see the max. stored temperature; in programming mode it browses the parameter codes or increases the displayed value. By holding it pressed for 3s the give access to the “Section” menù.

To see the min stored temperature; in programming mode it browses the parameter codes or decreases the displayed value. By holding it pressed for 3s the current time is displayed and it permits the User to enter Energy saving, Defrost and Clock parameter menu.

By holding it pressed for 3s the defrost is started. By pressing it when the current time is displayed, it allows the User to set defrost times.

Switch ON and OFF the cold room light. By holding it pressed for 3s Energy Saving function is started or stopped.

By holding it pressed for 6s, the Holiday function is started or stopped. By pressing it when the current time is displayed, it allows the User to set Energy Saving times.

Switch ON and OFF the auxiliary output.

Switch ON and OFF the instrument.

KEY COMBINATIONS

+ +

4.1 USE OF LEDS

Each LED function is described in the following table.

LED MODE Function

ON The SOLENOID VALVE is running FLASHING

To lock and unlock the keyboard.

To enter the programming mode.

To exit the programming mode.

- Programming Phase (flashing with LED

- Anti-short cycle delay enabled

)

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Installing and Operating Instructions

ON The fan is running FLASHING

ON The defrost is enabled FLASHING Drip time in progress ON The controller is working in “ALL” mode FLASHING The controller is working in remote virtual display mode ON - ALARM signal

Programming Phase (flashing with LED

- In “Pr2” indicates that the parameter is also present in “Pr1”

)

4.2 HOW TO SEE THE MIN TEMPERATURE

1. Press and release the n key.

2. The “Lo” message will be displayed followed by the minimum temperature recorded.

3. By pressing the n key or waiting for 5s the normal display will be restored.

4.3 HOW TO SEE THE MAX TEMPERATURE

1. Press and release the o key.

2. The “Hi” message will be displayed followed by the maximum temperature recorded.

3. By pressing the o key or waiting for 5s the normal display will be restored.

4.4 HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED

To reset the stored temperature, when max or min temperature is displayed :

1. Press SET key until “rST” label starts blinking.

N.B. After the installation RESET the temperature stored .

4.5 HOW TO SEE AND MODIFY THE SET POINT

1. Push and immediately release the SET key: the display will show the Set point value;

2. The SET LED start blinking;

3. To change the Set value push the oor n arrows within 10s.

4. To memorise the new set point value push the SET key again or wait 10s.

4.6 TO START A MANUAL DEFROST

1. Push the DEF key for more than 2 seconds and a manual defrost will start.

4.7 TO ENTER IN PARAMETERS LIST “PR1”

To enter the parameter list “Pr1” (user accessible parameters) operate as follows:

1. Enter the Programming mode by pressing the Set and DOWN key for few seconds (

2. The instrument will show the first parameter present in “Pr1”

and

start blinking).

4.8 TO ENTER IN PARAMETERS LIST “PR2”

To access parameters in “Pr2”:

1. Enter the “Pr1” level.

2. Select “Pr2” parameter and press the “SET” key.

3. The “PAS” flashing message is displayed, shortly followed by “0 - -” with a flashing zero.

4. Use oor n to input the securit y code in the flashing digit; confirm t he figure by pressing “SET”. The security code is “321“.

5. If the security code is correct the access to “Pr2” is enabled by pressing “SET” on the last digit.

Another possibility is the following: after switching ON the instrument the user can p ush Set and DO WN keys within 30 seconds. NOTE: each parameter in “Pr2” can be removed or put into “Pr1” (user level) by pressing “SET” + n.

When a parameter is present in “Pr1” LED

is on.

4.9 HOW TO CHANGE THE PARAMETER VALUE

1. Enter the Programming mode.

2. Select the required parameter with o or n.

3. Press the “SET” key to display its value (

and LED starts blinking).

4. Use o or n to change its value.

5. Press “SET” to store the new value and move to the following parameter.

To exit: Press SET + UP or wait 15s without pressing a key. NOTE: the new programming is stored even when the procedure is exited by waiting the time-out.

4.10 HOW TO LOCK THE KEYBOARD

1. Keep the o and n keys pressed together for more than 3 s.

2. The “POF” message will be displayed and the keyboard is locked. At this point it is only possible the viewing of the set point or the MAX o Min temperature stored and t o switch ON and OFF the light, the auxiliary output and the instrument.

TO UNLOCK THE KEYBOARD

Keep the o and n keys pressed together for more than

3s.

4.11 ON/OFF FUNCTION

By pushing the ON/OFF key, the instrument shows “OFF” for 5 sec. and the ON/OFF LED is

switched ON.

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During the OFF status, all the relays are switched OFF and the regu lations are stopped; if a monitoring system is connected, it does not record the instrument data and alarms.

N.B. During the OFF status the Light and AUX buttons are active.

4.12 TO SEE THE PROBE VALUES

1. Enter in “Pr2” level.

2. with o or n, select “dP1” parameter for room probe, “dP2” for evaporator probe or “dP3” for display probe.

3. Press the “SET” key to display the relative probe value.

4. Press “SET” to move to the following parameter.

5. THE SECTION MENU

This menu allows the user to access to a particular feature of the XM series related to the LAN (Local Area Network) of controllers. A single keyboard, depending on the programming of this menu, is able to control either the module of the local section of the LAN or any of the other modules of the LAN acting as a remote virtual display. The possibilities are: LOC: the keyboard controls and display the value, the status and the alarms of the local section of the LAN ALL: the keyboard display the value and the status of the local section, but the command given by the keyboard are effective on all the sections of the LAN. In case of alarm the writing “ASn” is shown, where “n” is the number of the section in alarm. SE1…Se5: the keyboard controls from remote the corresponding section (from 1 to 5 depending on LAN address) of the LAN and display the value of the probes, the who le status and all the alarms of the section. Only one of this remote control is allowed at the same time.

1. Push the o key for more than 3 seconds

2. The label corresponding to the section controlled by the keyboard will be displayed.

3. With o or n key select the section you want to control.

4. Press “Set” key to confirm and exit

6. REAL TIME CLOCK FUNCTIONS

The following functions are available only if the Real Time Clock is present

6.1 TO SEE THE CURRENT TIME AND DAY

1. Push the n key for more than 3 seconds

2. The following messages are displayed:

Hur (hour); Min (Minute); dAY (day = giorno)

3. To exit push à key or wait 5 seconds

6.2 TO SET THE TIME AND THE WEEKLY HOLIDAYS

1. Push the n key for more than 3 seconds

2. The current time is displayed.

3. By pushing the SET key, sett ing of the current hour, minutes, day and the weekly

holidays (up to 3) will be possible.

4. To exit, press SET + UP or wait 15s without pressing any key.

6.3 TO SET THE DEFROST TIMES

1. Push the n key for more than 3 seconds

2. The current time is displayed.

3. By pushing DEF key, the DEF led will start flashing and set ting defrost time will be

possible.

4. To exit, press SET + UP or wait 15s without pressing any key.

6.4 TO SET THE ENERGY SAVING TIMES

1. Push the n key for more than 3 seconds

2. The current time is displayed.

3. By pushing the ES key, the ES led will start flashing an d sett ing Energy Saving t im e

will be possible.

4. To exit, press SET + UP or wait 15s without pressing any key.

6.5 TO START HOLIDAY FUNCTION BY USING THE KEYBOARD

1. Push the ES key for more than 6 seconds until the label “Hd” is shown.

2. The regulators will follow holiday times.

3. Push the ES key for more than 6 seconds to start normal functioning again.

7. PARAMETER LIST

REGULATION Hy Differential: (0,1÷25,5°C; 1÷45°F): Intervention differential for set point, always positive. Solenoid

valve Cut IN is Set Point Plus Differential (Hy). Solenoid valve Cut OUT is when the temperature reaches the set point.

LS Minimum set point limit: (-50,0°C

set point.

US Maximu m set point limit: (SET

point.

OdS Outputs activation delay at start up: (0÷255 min) This function is enabled at the init ial start up of

the instrument and inhibits any output activation for the period of time set in the parameter. (AUX and Light can work)

÷SET; -58°F÷SET) Sets the minimum acceptable value for the

÷110°C; SET÷230°F) Set the maximum acceptable value for set

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Installing and Operating Instructions

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AC Anti-short cycle delay: (0÷30 min) interval between the solenoid valve stop and the following

restart.

Con solenoid valve ON time with faulty probe: (0÷255 min) time during which the solenoid valve is

active in case of faulty thermostat probe. With COn=0 solenoid valve is always OFF.

COF solenoid valve OFF time with faulty probe: (0÷255 min) time during which the solenoid valve is

off in case of faulty thermostat probe. With COF=0 solenoid valve is always active.

DISPLAY CF Temperature measurement unit: °C = Celsius; °F = Fahrenheit . When the measurement un it is

changed the SET point and the values of the regulation parameters have to be modified

rES Resolution (for °C): (in = 1°C; de = 0,1°C) allows decimal point display.

de = 0,1°C in = 1 °C

Lod Local display : select which probe is displayed by the remote display (T850)

P1 = Thermostat probe P2 = Evaporator probe P3 = auxiliary probe 1r2 = difference between P1 and P2 (P1-P2)

DEFROST tdF Defrost type:

rE = electrical heater (SOLENOID VALVE OFF)

in = hot gas (SOLENOID VALVE and defrost relays ON) EdF Defrost mode: rtc = Real Time Clock mode. Defrost time follows Ld1÷Ld8 parameters on workdays and

Sd1÷Sd8 on holidays.

in = interval mode. The defrost starts when the time “Idf” is expired.

Sd = Smart Defrost mode. The time IdF (interval between defrosts) is increased only when the

solenoid valve is active (even non consecutively) and only if the evaporator temperature is less

than the value in "SdF” (set point for SMARTFROST). SdF Set point for SMARTFROST: (-30

÷30 °C/ -22÷86 °F) evaporator temperature which allows the

IdF counting (interval between defrosts) in SMARTFROST mode. dtE Defrost termination temperature: (-50,0÷110,0°C; -58÷230°F) (Enabled only when the

evaporator probe is present) sets the temperature measured by the evaporator probe which

causes the end of defrost. IdF Interval between defrosts: (1÷120h) Determines the time interval between the beginning of two

defrost cycles. MdF (Maximum) duration of defrost: (0÷255 min) When P2P = n, no evaporator probe, it sets the

defrost duration, when P2P = y, defrost end based on temperature, it sets the maximum length for

defrost.

dFd Display during defrost: rt = real temperature;

it = temperature reading at the defrost start;

Set = set point;

dEF = “dEF” label; dEG = “dEG” label; dAd Defrost display time out: (0

÷255 min) Sets the maximum time between the end of defrost and

the restarting of the real room temperature display. Fdt Drain down time: (0÷60 min.) time interval between reaching defrost termination temperature and

the restoring of the control’s normal operation. This time allows the evaporator to eliminate w ater

drops that might have formed due to defrost.

dPO First defrost after start-up: y = Immediately;

n = after the IdF time

FANS FnC Fan operating mode:

C-n = running with the solenoid valve, OFF during the defrost;

C-y = running with the solenoid valve, ON during the defrost;

O-n = continuous mode, OFF during the defrost;

O-y = continuous mode, ON during the defrost; Fnd Fan delay after defrost: (0÷255 min) The time interval between the defrost end and evaporator

fans start. FSt Fan stop temperature: (-50÷110°C; -58÷230°F) setting of temperature, detected by evaporator

probe, above which the fan is always OFF.

ALARMS ALC Temperature alarm configuration

rE = High and Low alarms related to Set Point

Ab = High and low alarms related to the absolute temperature. ALU High temperature alarm setting:

ALC= rE, 0

÷ 50°C or 90°F

ALC= Ab, ALL ÷ 110°C or 230°F when this temperature is reached and after the ALd delay time the HA alarm is enabled.

ALL Low temperature alarm setting: ALC = rE , 0 ALC = Ab , - 50°C or -58°F

÷ 50 °C or 90°F

÷ ALU

when this temperature is reached and after the ALd delay time, the LA alarm is enabled,. AFH Temperature alarm and fan differential: (0,1÷25,5°C; 1÷45°F) Intervention differential for

temperature alarm set point and fan regulation set point, always positive. ALd Temp erature alarm del ay: (0÷255 min) time i nterval between the det ection of an alarm cond ition

and the corresponding alarm signalling. dAO Delay of temperature alarm at start-up: (0min÷23h 50min) time interval between the detection of

the temperature alarm condition after the instrument power on and the alarm signalling. EdA Alarm delay at the end of defrost: (0

÷255 min) Time interval between the detection of the

temperature alarm condition at the end of defrost and the alarm signalling. tbA Buzzer and alarm relay silencing: by pushing one of the keypad buttons. n= Only the Buzzer is silenced;

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y= Buzzer and relay are silenced.

PROBE INPUTS Ot Thermostat probe calibration: (-12.0÷12.0°C/ -21÷21°F) allows to adjust possible offset of the

thermostat probe.

OE Evaporator probe calibration: (-12.0

÷12.0°C/ -21÷21°F) allows to adjust possible offsets of the

evaporator probe.

O3 Auxiliary probe calibration: (-12.0

evaporator probe.

÷12.0°C/ -21÷21°F) allows to adjust possible offsets of the

P2P Evaporator probe presence:

n= not present: the defrost stops only by time; y= present: the defrost stops by temperature and

time.

P3P Auxiliary probe presence: n = not present; y= present. HES Temperature increase during the Energy Saving cycle : (-30÷30°C / -54÷54°F) sets the

increasing value of the set point during the Energy Saving cycle.

DIGITAL INPUTS I1P Energy saving digital input polarity:

CL : the digital input is activated by closing the contact; OP : the digital input is activated by opening the contact. I2P Configurable digital input polarity: CL : the digital input is activated by closing the contact; OP : the digital input is activated by opening the contact

I2F Digital input operating mode: configure the digital input function: EAL = generic alarm; bAL = serious alarm mode; dFr = Start defrost; AUS = Relay AUX actuation; onF = remote On/OFF. Hdf = Holiday function. did Time interval/delay for digital input alarm:(0

÷255 min.) Time interval to calculate the number of

the pressure switch activation when I2F=PAL. If I2F=EAL or bAL (external alarms), “did” parameter defines the time delay between the detection and the successive signalling of the alarm.

bbC Type of keyboard: (4bb

÷8bb min.) State the kind of keyboard used: 4bb=4 keys, 6bb= 6 keys,

8bb= 8 keys

TO SET CURRENT TIME AND WEEKLY HOLIDAYS (3SEC. Afterward ) CbP Clock board presen t (y ÷ n) Presence of the RTC

Hur Current hour (0 ÷ 23 h) Min Current minute (0 ÷ 59min) dAY Current day (Sun ÷ SAt) Hd1 First weekly holiday (Sun ÷ nu) Set the first day of the week which follows the holiday times. Hd2 Second weekly holiday (Sun ÷ nu) Set the second day of the week which follows the holiday

times.

Hd3 Third weekly holiday (Sun ÷ nu) Set the third day of the week which follows the holiday times. N.B. Hd1,Hd2,Hd3 can be set also as “nu” value (Not Used).

TO SET ENERGY SAVING TIMES (3SEC. afterward ) ILE Energy Saving cycle start during wo rkdays: (0 ÷ 23h 50 min.) During the Energy Saving cycle

the set point is increased by the value in HES so that the operation set point is SET + HES.

dLE Energy Saving cycle l ength during workdays: (0 ÷ 24h 00 min.) Sets the duration of t he Energy

Saving cycle on workdays.

ISE Energy Saving cycle start on holid ays. (0 ÷ 23h 50 min.) dSE Energy Saving cycle length on holidays (0 ÷ 24h 00 min.) HES Temperature increase during the Energy Saving cycle (-30÷30°C / -54÷54°F) sets the

increasing value of the set point during the Energy Saving cycle.

TO SET DEFROST TIMES (3SEC. afterward ) Ld1÷Ld8 Workday defrost start (0 ÷ 23h 50 min.) These parameters set the beginning of the eight

programmable defrost cycles during workdays. Ex. When Ld2 = 12.4 the second defrost starts at

12.40 during workdays.

Sd1÷Sd8 Holiday defrost start (0 ÷ 23h 50 min.) These parameters set the beginning of the eight

programmable defrost cycles on holidays. Ex. When Sd2 = 3.4 the second defrost starts at 3.40 on holidays.

N.B. : To disable a defrost cycle set it to “nu”(not used).

Ex. If Ld6=nu ; the sixth defrost cycle is disabled

L.A.N. CONFIGURATION LSn L.A.N. section nu mber (1 ÷ 5) States the number of sections available in the L.A.N.

Lan L.A.N. serial address (1 ÷ LSn) Identifies the instrument address inside local network of

multiplexed cabinet controller.

LSP L.A.N. set-point synchronisation

y= the section set-point, when modified, is updated to the same value on all the other sections n= the set-point value is modified only in the local section

LdS L.A.N. display synchronisation

y= the value displayed by the section is sent to all the other sections n= the set-point value is modified only in the local section

LOF L.A.N. On/Off synchronisatio n this parameter states if the On/Off command of the sectio n will

act on all the other ones too.

y= the On/Off command is sent to all the other sections n= the On/Off command acts only in the local section

LLi L.A.N. light synchronisation this parameter states if the light command of the section will act on

all the other ones too.

y= the light command is sent to all the other sections n= the light command acts only in the local section

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Installing and Operating Instructions

LAU L.A.N. AUX output synchronisation this parameter states if the AUX command of the section

will act on all the other ones too.

y= the light command is sent to all the other sections

n= the light command acts only in the local section LES L.A.N. energ y saving synchronisation this parameter states if the energy saving command of

the section will act on all the other ones too.

y= the Energy Saving command is sent to all the other sections.

n= the Energy Saving command acts only in the local section LSd Remote probe display this parameter st ates if the section has to display t he local probe value or

the value coming from another section.

y= the displayed value is the one coming from another section (which has parameter LdS = y).

n= the displayed value is the local probe one.

OTHER Adr RS485 serial address (1÷247): Identifies the instrument address when connected to a Mo dBUS

compatible monitoring system.

dP1 Probe 1 value displaying shows the value measured by probe 1 dP2 Probe 2 value displaying shows the value measured by probe 2 dP3 Probe 3 value displaying shows the value measured by probe 3 Rel Release software: (read only) Software version of the microprocessor. Ptb Parameter table: (read only) it shows the original code of the dIXEL parameter map. Pr2 Access to the protected parameter list (read only).

8. DIGITAL INPUTS

The XM series can support up to 2 free of voltage contact digital inputs. One is always configured as energy saving while the second is programmable in six different configurations by the “I2F” parameter.

8.1 ENERGY SAVING INPUT

The Energy Saving function allows to change the set point value as the result of the SET+ HES (parameter) sum. This function is enabled until the digital input is activated.

8.2 CONFIGURABLE INPUT - GENERIC ALARM (EAL)

As soon as the digital input is activated the unit will wait for “did” time delay b efore signalling t he “EAL” alarm message. The outputs status don’t change. The alarm stops just after the digit al input is deactivated.

8.3 CONFIGURABLE INPUT - SERIOUS ALARM MODE (BAL)

When the digital input is activated, the unit will wait for “did” delay before signalling the “BAL” alarm message. The relay outputs are switched OFF. The alarm will stop as soon as the digital input is deactivated.

8.4 CONFIGURABLE INPUT - START DEFROST (DFR)

It executes a defrost if there are the right conditions. After the defrost is finished, the normal regulatio n will restart only if the digital input is disabled otherwise the instrument will wait until the “Mdf” safety time is expired.

8.5 CONFIGURABLE INPUT - RELAY AUX ACTUATION (AUS)

This function allows to turn ON and OFF the auxiliary relay by using the digital input as external switch.

8.6 CONFIGURABLE INPUT - REMOTE ON/OFF (ONF)

This function allows to switch ON and OFF the instrument.

8.7 CONFIGURABLE INPUT - HOLIDAY FUNCTION (HDF) In Holiday function Energy saving and defrost cycles follow holiday times. (Sd1…Sd8)

8.8 DIGITAL INPUTS POLARITY The digital inputs polarity depends on “I1P” and “I2P” parameters.

CL : the digital input is activated by closing the contact.

OP : the digital input is activated by opening the contact

9. INSTALLATION AND MOUNTING

Power modules XM470K shall be mounted in a panel with two or more screws and they must be connected to the keyboards by means of a two-wire cable (∅ 1mm). The temperature range a llowed fo r correct operation is 0 - 60 °C. Avoid places subject to strong vibrations, corrosive gases, excessive dirt or humidity. The same recommendations apply to probes. Let the air circulate by the cooling holes.

9.1 T840 - CUT OUT T840 keyboard shall be mounted on vertical panel, in a 150x31 mm hole, and fixed using two screws ∅

3 x 2mm. To obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-L).

165

-1

+0.5

150

-0

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CLICK!

9.3 T840 MOUNTING WITH KEYBOARD COVER OPENING UPWARD

CLICK!

9.4 V840 - CUT OUT V840 keyboard shall be mounted on vertical pa nel, in a 72x56 mm hol e, and fixed using screws ∅ 3 x

2mm. To obtain an IP65 protection grade use the front panel rubber gasket (mod. RGW-V).

-0

+0.5

10. ELECTRICAL CONNECTIONS

XM470K is provided with screw terminal block to connect cables with a cross section up to 2,5 mm2 for

Ø3 x2

9.2 T840 MOUNTING WITH KEYBOARD COVER OPENING DOWNWARD

the connection of RS485(optional), the LAN, the probes, the digit al inputs and the keyboard. Other inputs, power supply and relays connections are provided with Faston connection (6,3mm). Heatresistant cables have to be used. Before connecting cables make sure the power supply complies with the instrument’s requirements. Separate the probe cables from the power supply cables, from the outputs and the power connections. Do not exceed the maximum current allow ed o n each rel ay, in cas e of heavier loads use a suitable external relay.

N.B. Maximum current allowed for all the loads is 20A.

10.1 PROBE CONNECTIONS

The probes shall be mounted with the bulb upwards to prevent damage s due to casual liquid infilt ration. It is recommended to place the thermostat probe away from air streams to correctly measure the

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average room temperature. Place the defrost termination probe among the evaporator fins in the coldest place, where most ice is formed, far from heaters or from the warmest place during defrost, to prevent premature defrost termination.

Installing and Operating Instructions

11. RS485 SERIAL LINE

XM470K is provided (on request) of a direct RS485 connection that allow the unit, t o be linked to a network line ModBUS-RTU compatible as the dIXEL monitoring system XJ500 (Version 3.0). The same TTL connector is used to upload and download the parameter list of the “HOT KEY“. The instruments can be ordered wit the serial output RS485(Optional).

12. USE OF THE PROGRAMMING “HOT KEY “

The XM units can UPLOAD or DOWNLOAD the parameter list from its own E2 internal memory to the

“Hot Key” and vice-versa through a TTL connector.

12.1 DOWNLOAD (FROM THE “HOT KEY” TO THE INSTRUMENT)

1. Turn OFF the instrument by means of the ON/OFF key ,insert the “Hot Key” and then turn the

unit ON.

2. Automatically the parameter list of the “Hot Key” is downloaded into the controller memory, the

“DoL” message is blinking. After 10 seconds the instrument will restart working with the new parameters.

At the end of the data transfer phase the instrument displays the following messages: “end “ for right programming. The instrument starts regularly with the new programming. “err” 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.

12.2 UPLOAD (FROM THE INSTRUMENT TO THE “HOT KEY”)

1. When the XM unit is ON, insert the “Hot key” and push è key; the "uPL" message appears.

2. The UPLOAD begins; the “uPL” message is blinking.

3. Remove the “Hot Key”. At the end of the data transfer phase the instrument displays the following messages: “end “ for right programming.

“err” for failed programming. In this case push “SET” key if you want to restart t he programming again or remove the not programmed “Hot key”.

13. ALARM SIGNALS

The alarm signals displayed by the keyboard are divided into 2 groups:

1. the local alarms, which involves all the alarm related to the section directly controlled by the

keyboard

2. Remote alarms, which involves the alarms related to LAN 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 3s.

13.1 LOCAL ALARMS

Message Cause Outputs

“P1” Thermostat probe failure Alarm output ON; SOLENOID VALVE output according “P2” Evaporator probe failure Alarm output ON; Other outputs unchanged

“P3” Auxiliary probe failure Alarm output ON; Other outputs unchanged “HA” Maximum temperature

alarm

“LA” Minimum temperature

alarm

“EE” Data or memory failure Alarm output ON; Other out puts unchanged “EAL” External alarm Alarm output ON; Other outputs unchanged “BAL” Serious external alarm Alarm output ON; Other outputs OFF

“rtc” Real time clock alarm Alarm output ON; Other outputs unchanged; Defrosts according to

“rtF” Real time clock failure

alarm

13.2 REMOTE ALARMS

Message Cause

“ASn” Section n is in alarm with n = LAN address of the section (parameter “Lan”). This alarm

happen when the keyboard is set al “ALL”. This is a generic signal that the section is alarm,

to get detailed information about it set the keyboard to control that section. “nLn” No link alarm section n with n = LAN address of the section (parameter “Lan”) “nLn” No link alarm when displaying a remote probe. This alarm appears when the keyboard is

displaying a remote probe (parameter LdS = y)

“rdE” Remote virtual display error. More than one keyboards are set to control remote sections

13.3 SILENCING BUZZER / ALARM RELAY OUTPUT

If “tbA = y”, once the alarm signal is detected the buzzer and the relay are is silenced by pressing an y key. If “tbA = n”, only the buzzer is silenced while the alarm relay is on until the alarm condition recovers. Buzzer is mounted in the T640 and T840 keyboards and it’s an option.

to “COn” and “COF”

Alarm output ON; Other outputs unchanged Alarm output ON; Other outputs unchanged

par. “IdF”

larm output ON; Other outputs unchanged; Defrosts according to

par. “IdF

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13.4 “EE” ALARM

The dIXEL inst ruments are provided with an internal check for the data integrity. Alarm “EE” flashes when a failure in the memory data occurs. In such cases the alarm output is enabled.

13.5 ALARM RECOVERY

Probe alarms : “P1” (probe1 faulty), “P2” and “P3”; they automatically stop 10s after the probe restarts normal operation. Check connections before replacing the probe. Temperature alarms “HA” and “LA” automatically stop as soon as the thermostat temperature returns to normal values or when the defrost starts. External alarms “EAL”, “BAL” stop as soon as the external digital input is disabled. No link akarms “nLn” and “nLn” automatically stop after the connection with the section is restored. “RdE” alarm automatically stop when only one keyboard is set as remote virtual display again

14. TECHNICAL DATA

V840 and T840 keyboards Housing: self extinguishing ABS. Case: facia 38x185 mm; depth 23mm Mounting :

panel mounting in a 150x31 mm panel cut-out with two screws. Distance between the holes 165mm

Protection: IP20. Frontal protection: IP65 with frontal gasket mod RG-L. (optional) Connections: Screw terminal block Power supply: from power module Display: 3 digits, red LED, 14,2 mm high. Optional output: buzzer

Power modules XM470K Case: “OS”: open board 132x 94 mm; height: 40mm. “GS”: case 155x114; height 70mm. Self extinguishing ABS. IP55 Connections: Screw terminal block Power supply: 230Vac or. 110Vac Power absorption: 10VA max. Inputs: 3 NTC probes Digital inputs: 2 free voltage Relay outputs: Total current on loads MAX. 20A Solenoid Valve: relay SPST 8(3) A, 250Vac light: relay SPST 16(3) A, 250Vac fans: relay SPST 8(3) A, 250Vac defrost: relay SPST 16(3) A, 250Vac alarm / Aux: SPST relay 8(3) A, 250Vac Serial output : RS485 optional Communication protocol: ModBUS - RTU Data storing: on the non-volatile memory (EEPROM). Internal clock back-up: 24 hours Kind of action: 1B. Pollution grade: normal Software class: A. Operating temperature: 0÷60 °C. Storage temperature: -25÷60 °C. Relative humidity: 20 Measuring and regulation range: NTC probe: -40÷110°C (-58÷230°F) Resolution: 0,1 °C or 1°C or 1 °F (selectable). Accuracy (ambient temp. 25°C): ±0,5 °C ±1 digit

÷85% (no condensing)

≤ 2,5 mm

heat-resistant wiring

≤ 2,5 mm

heat-resistant wiring and 6,3mm Faston

± 10%

∅ 3 x 2mm.

15. CONNECTIONS

15.1 XM470K

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16. DEFAULT SETTING VALUES

Label Name Range Default Level

REGULATION °C/°F XM470 Set Set point LS÷US -5/23 Pr1 Hy Differential 0,1÷25,5 °C / 1÷45°F 2/4 Pr1 LS Minimum set point -50,0°C÷SET / -58°F÷SET -30/-22 Pr2 US Maximum set point SET ÷ 110°C / SET ÷ 230°F 20/68 Pr2 OdS Outputs activation delay at start up 0÷255 min. 1 Pr2 AC Anti-short cycle delay 0÷30 min. 1 Pr1 COn solenoid valve on time with faulty probe 0÷255 min. 15 Pr2 COF solenoid valve off time with faulty probe 0÷255 min. 30 Pr2 DISPLAY CF Temperature measurement unit °C ÷ °F °C/°F Pr2 rES Resolution (integer/decimal point) in ÷ de de Pr1 Lod Local display P1 ÷ P2 ÷ P3 ÷ 1r2 P1 Pr2 DEFROST tdF Defrost type rE, in rE Pr1 EdF Defrost mode rtc, In, Sd In Pr2 SdF Set point for SMART DEFROST -30 ÷ +30°C / -22÷+86°F 0 Pr2 dtE Defrost termination temperature (1°Evaporator) -50,0÷110°C /-58÷230°F 8/46 Pr1 IdF Interval between defrost cycles 1÷120h 6 Pr1 MdF (Maximum) length for 1° defrost 0÷255 min. 30 Pr1 dFd Displaying during defrost rt, it, SEt, dEF, dEG it Pr2 dAd MAX display delay after defrost 0÷255 min. 30 Pr2 Fdt Draining time 0÷60 min. 0 Pr2 dPO First defrost after start up n ÷ y n Pr2 FANS FnC Fans operating mode C-n, C-y, O-n, O-y O-n Pr2

Installing and Operating Instructions

Label Name Range Default Level Sd2 2nd holiday defrost start 0 ÷ 23h 50 min. - nu 13.0 Pr2 Sd3 3rd holiday defrost start 0 ÷ 23h 50 min. - nu 21.0 Pr2 Sd4 4th holiday defrost start 0 ÷ 23h 50 min. - nu nu Pr2 Sd5 5th holiday defrost start 0 ÷ 23h 50 min. - nu nu Pr2 Sd6 6th holiday defrost start 0 ÷ 23h 50 min. - nu nu Pr2 Sd7 7th holiday defrost start 0 ÷ 23h 50 min. - nu nu Pr2 Sd8 8th holiday defrost start 0 ÷ 23h 50 min. - nu nu Pr2

LAN CONFIGURATION LSn L.A.N. section number 1 ÷ 5 1 Pr2 Lan L.A.N. serial address 1 ÷ LSn 1 Pr2 LMd L.A.N. defrost synchronisation n ÷ y n Pr2 LSP L.A.N. Set-point synchronisation n ÷ y n Pr2 Lds L.A.N. display synchronisation n ÷ y n Pr2 LOF L.A.N. On/Off synchronisation n ÷ y n Pr2 LLi L.A.N. Light synchronisation n ÷ y n Pr2 LAU L.A.N. AUX output synchronisation n ÷ y n Pr2 LES L.A.N. Energy Saving synchronisation n ÷ y n Pr2 LSd Remote probe display n ÷ y n Pr2

OTHER Adr RS485 Serial address 0÷247 1 Pr1 dP1 Probe 1 value display - - - - - - Pr2 dP2 Probe 2 value display - - - - - - Pr2 dP3 Probe 3 value display - - - - - - Pr2 rEL Software release - - - - - - Pr2 Ptb Map code - - - - - - Pr2 Pr2 Access parameter list - - - - - - Pr2

Dixell s.r.l. Via dell’Industria, 27 - 32010 Z.I Pieve d’Alpago (BL) ITALY tel. +39 - 0437 - 98 33 - fax +39 - 0437 - 98 93 13

E-mail:dixell@dixell.com - http://www.dixell.com

Fnd Fans delay after defrost 0÷255 min. 10 Pr2 FSt Fans stop temperature -50,0÷110°C / -58÷230°F 2/35 Pr2 ALARMS ALC Temperature alarms configuration rE÷Ab rE Pr2 ALU MAXIMUM temperature alarm -50,0÷110°C/-58÷230°F 10/20 Pr1 ALL minimum temperature alarm -50,0÷110°C/ -58÷230°F 10/20 Pr1 AFH Temperature alarm and fan differential 0,1÷25,5 °C/ 1÷45°F 2/4 ALd Temperature alarm delay 0÷255 min. 15 Pr2 dAO Delay of temperature alarm at start up 0 ÷ 23h 50 min. 1,3 Pr2 EdA Alarm delay at the end of defrost 0÷255 min. 30 Pr2 tBA Alarm relay silencing y ÷ n y Pr2 ANALOGUE INPUTS Ot Thermostat probe calibration -12,0÷12,0°C / -21÷21°F 0 Pr1 OE Evaporator probe calibration -12,0÷12,0°C / -21÷21°F 0 Pr2 O3 Auxiliary probe calibration -12,0÷12,0°C / -21÷21°F 0 Pr2 P2P Evaporator probe presence n ÷ y y Pr2 P3P Auxiliary probe presence n ÷ y n Pr2 HES Temperature increase during the Energy Saving

cycle

-30÷30°C / -54÷54°F 0 Pr2

DIGITAL INPUTS I1P Door switch polarity CL÷OP CL Pr2 I2P Configurable digital input polarity CL÷OP CL Pr2 i2F Digital input configuration EAL, bAL, PAL,

EAL Pr2

dFr, AUS, ES, OnF

dId Digital input alarm delay 0÷255 min. 5 Pr2

TIME AND WEEKLY HOLIDAYS CbP Clock Board presence n ÷ y n Pr2 Hur Current hour 0 ÷ 23 0 Pr2 Min Current minute 0 ÷ 59 0 Pr2 dAY Current day Sun ÷ SAt Sun Pr2 Hd1 First weekly holiday Sun ÷ SAt – nu nu Pr2 Hd2 Second weekly holiday Sun ÷ SAt – nu nu Pr2 Hd3 Third weekly holiday Sun ÷ SAt – nu nu Pr2

ENERGY SAVING TIMES ILE Energy Saving cycle start during workdays 0 ÷ 23h 50 min. 0 Pr2 dLE Energy Saving cycle length during workdays 0 ÷ 24h 00 min. 0 Pr2 ISE Energy Saving cycle start on holidays 0 ÷ 23h 50 min. 0 Pr2 dSE Energy Saving cycle length on holidays 0 ÷ 24h 00 min. 0 Pr2 HES Temperature increase during the Energy Saving

-30÷30°C / -54÷54°F 0 Pr2

cycle DEFROST TIMES Ld1 1st workdays defrost start 0 ÷ 23h 50 min. - nu 6.0 Pr2 Ld2 2nd workdays defrost start 0 ÷ 23h 50 min. - nu 13.0 Pr2 Ld3 3rd workdays defrost start 0 ÷ 23h 50 min. - nu 21.0 Pr2 Ld4 4th workdays defrost start 0 ÷ 23h 50 min. - nu nu Pr2 Ld5 5th workdays defrost start 0 ÷ 23h 50 min. - nu nu Pr2 Ld6 6th workdays defrost start 0 ÷ 23h 50 min. - nu nu Pr2 Ld7 7th workdays defrost start 0 ÷ 23h 50 min. - nu nu Pr2 Ld8 8th workdays defrost start 0 ÷ 23h 50 min. - nu nu Pr2 Sd1 1st holiday defrost start 0 ÷ 23h 50 min. - nu 6.0 Pr2

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