Copeland XR77CHC Universal Digital Controller with Bluetooth Connectivity

General Warnings

Read this manual before using the appliance. This manual is part of the product and should be kept near the appliance for quick and easy consultation.

Check the application limits before proceeding. The appliance must not be used for purposes other than those described below. It cannot be used as a safety device.

Copeland Controls Srl reserves the right to modify the composition of its products, even without prior notice, guaranteeing the same invariable functionality.

General Precautions

• Check that the supply current is correct before connecting the appliance.
• Do not expose to water or humidity; use the controller only within the operating limits, avoiding sudden temperature changes with high atmospheric humidity to prevent condensation formation.
• Warning: disconnect all electrical connections before performing any maintenance operation.
• Place the probe where the end-user cannot reach it. The appliance must not be opened.
• In case of malfunction or defective operation, return the instrument to the distributor or to Copeland Controls S.r.l. with a detailed description of the fault.
• Note the maximum current that can be applied to each relay (refer to technical data).
• Ensure that the cables for probes, loads, and power supply are separated and sufficiently spaced from each other, without crossing or intertwining.
• For applications in industrial environments, it may be useful to use current filters (our mod. FT1) in parallel with inductive loads.

General Description

The XR77CHC, with a 32x74x60mm format, is a microprocessor-based controller suitable for applications in ventilated medium and low-temperature refrigeration units. It features 4 relay outputs to control the compressor, fans, lights, and defrost or auxiliary outputs. The device is also supplied with up to 4 NTC, PTC, or PT1000 probe inputs. The first is for temperature control, the second should be placed on the evaporator to control the defrost end temperature and manage the fan. The third and fourth are for the condenser or other applications. The controller has a pair of configurable digital inputs. With the HOT-KEY, it is possible to program the instrument easily and quickly.

The controller has Bluetooth 4.2 connectivity with the Copeland Connected mobile application, which can be downloaded from the Android and iOS app stores. You will need to create your own account to connect to the device.

Bluetooth Pairing: Linking Copeland Connect

To connect the Copeland Connected application to the device, you must start the application, register with a new account, or open your account if already registered. Ensure your location is activated on your smartphone, wait for the BLE network to scan and discover, and select the device you wish to connect to. On the appliance, press and hold the two top buttons (AUX + SET) together for more than 3 seconds to activate the connection.

If the controller depends on your organization or is free, you can connect. If you see a padlock icon ?, you will need to ask for the organization's password to connect to the device.

For more information, download the Copeland Connected instruction guide from: https://webapps.copeland.com/Dixell/Pages/Manuals.

After the first connection, you can connect to the device each time without repeating the sequence.

Front Panel Controls

SET Button: Press to display the target setpoint and the actual setpoint. In programming mode, it selects a parameter or confirms an operation.

AUX Button: Programmable button, see LGC and LG2 parameters.

UP Button (▲): In programming mode, it browses parameter codes or increases the displayed value. Other functions related to UPC and UP2 parameters (if available).

DOWN Button (▼): In programming mode, it browses parameter codes or decreases the displayed value. Other functions related to dnC and dn2 parameters (if available).

ON/OFF Button: Keep pressed for 3s to turn the device on or off.

Key Combinations:

• SET + DOWN (3s): To lock or unlock the keypad.
• SET + UP: To enter programming mode.
• SET + AUX: To return to ambient temperature display.
• AUX + SET (3s): To allow connection with the Copeland Connected application when requested.

Status Indicators

Setpoint Menu

The SET key provides access to the quick menu where you can view:

• The setpoint value
• The actual setpoint value (rSE)

Press and release the SET key five times, or wait 60s to return to normal display.

Setpoint Modification

1. Press the SET key for more than 3s to change the setpoint value.
2. The setpoint value will be displayed and the "°C" LED will start flashing.
3. To change the setpoint, press the UP (▲) or DOWN (▼) button.
4. To memorize the new setpoint value, press the SET button again or wait 60s.

Manual Defrost

Press the DEFROST button for more than 3s to initiate a manual defrost cycle.

Regulation

Regulation is performed according to the temperature measured by the thermostat probe with a positive differential to the setpoint. If the temperature rises and reaches the setpoint plus the differential, the compressor starts. When the temperature returns to its value, the compressor switches off.

In case of thermostat probe failure, compressor start-up and shut-down are timed via the CoF and Con parameters.

Second Compressor

The controller can manage circuits with a double compressor. For this, a pair of relays must be correctly configured: oAx=CP1 and oAy=CP2. The parameters used for this type of regulation are:

• AC: Compressor anti-short cycle delay.
• AC1: Second compressor anti-short cycle delay.
• 2CC: Activation mode for the second compressor (valid if oAx=CP1 and oAy=CP2).
• rCC: Compressor rotation enabling.
• MCo: Maximum time with compressor activated.

The second compressor output is activated via the 2CC parameter:

• If 2CC=FUL, the second compressor is activated in parallel with the first compressor (CP1), with a possible delay as configured in the AC1 parameter. Both compressors switch off at the same time (if T
• If 2CC=HAF, the second compressor is activated when the temperature is T>SET+HY+HY1. The AC1 delay is respected. The second compressor is deactivated when T

With the rCC parameter, compressor rotation can be enabled: the activation of the first and second compressor will be alternated to equalize the working hours of both. In case of hot gas defrost, it is possible to select whether one or both compressors will be used.

Energy Saving Algorithm

Description

The device allows configuring different setpoints that can be used during normal or reduced electricity usage. The standard SETPOINT (SET) is used to maintain the temperature at a certain value when the energy saving (ES) state is not active. Conversely, when the ES state is active, a different SETPOINT (SET_ES) will be used, which is higher than the standard one.

The HES parameter must be configured to change the temperature regulation according to the formula: SET ES = SET + HES.

Additionally, there are two differential values for SET and SET_ES, used for compressor activation and deactivation. When the ES state is active, the HYE parameter will be used instead of HY.

Basic Energy Saving Algorithm

The energy saving state will be saved in internal memory to resume previous operation if a failure occurs. It requires a door switch to function (e.g., i1F=dor).

Parameters Involved:

• i1F or i2F: Set as door input to control appliance usage.
• StE: Interval to switch from normal mode to energy saving mode.
• EtS: Interval to switch from energy saving mode to normal mode.
• HES: Differential for the SETPOINT when energy saving mode is active.
• HYE: Differential for regulation when energy saving mode is active.
• dS: Interval for door open detection.
• LdE: Light output controlled (OFF when energy saving mode is active).

NOTE: Cyclic mode (ES - normal mode - ES - etc.) works if i1F=dor and EtS and StE are different from zero. If EtS=0 or StE=0, the controller will not change the operating mode, and it will be possible to switch from normal to energy saving mode using the ES button or by configuring i1F=ES.

Quick Cooling Function

The quick cooling function is activated automatically:

• Upon completion of defrost.
• After power-on if T>SET+CCS.

When the regulation probe temperature (Tes) is:

• T>SET+HY+oHt in normal mode.
• T>SET+HES+HYE+oHE in energy saving mode.

In this case, a different setpoint (SET+CCS) will be enabled. As soon as the ambient temperature reaches the SET+CCS value, the compressor will stop, and normal regulation will be restored.

NOTE: The Quick Cooling function is disabled when CCS=0 or CCt=0.

The CCt parameter configures the maximum activation time for any quick cooling function. When CCt expires, the quick cooling function will stop immediately, and the standard SETPOINT will be restored.

Evaporator Fans

General Description

The evaporator fan can be managed by a specific control. To enable it, an evaporator probe must be selected using the FAP parameter. Here is a description of all related parameters:

• FAP: To select the evaporator fan probe.
• FSt: To select the evaporator fan shut-off setpoint.
• HYF: Differential for evaporator fan activation.

With the FnC parameter, the evaporator fan operating mode can be selected:

• FnC=Cn: Evaporator fans will switch on and off with the compressor and will not operate during defrost. When the compressor is off, the evaporator fans will start a duty cycle mode (see FoF, Fon, FF1, and Fo1 parameters).
• FnC=on: Evaporator fans will operate even with the compressor off, and will not operate during defrost.
• FnC=CY: Evaporator fans will switch on and off with the compressor and will operate during defrost. When the compressor is off, the evaporator fans will enter a duty cycle operating mode (see FoF, Fon, FF1, and Fo1 parameters).
• FnC=OY: Evaporator fans will operate constantly, even during defrost.
• Fnd: Delay in activation after a defrost cycle.

Evaporator Fan and Digital Input

When the digital input is configured as a door switch (i1F=dor), the state of the evaporator fan and compressor depends on the odC parameter:

• odC=no: Normal regulation.
• odC=FAn: Evaporator fan disabled.
• odC=CPr: Compressor disabled.
• odC=F-C: Compressor and evaporator fan disabled.

When rrd=Y, the regulation will always be restored after a door open alarm.

Condenser Fan

General Description

The condenser fan can be managed by a specific control. To enable it, a condenser probe must be selected using the FAC parameter. Here is a description of all related parameters:

• FAC: To select the condenser fan probe.
• St2: To select the condenser fan shut-off setpoint.
• HY2: Differential for condenser fan activation.

With the FCC parameter, the condenser fan operating mode can be selected:

• FCC=Cn: The condenser fan will switch on and off with the compressor and will not operate during defrost.
• FCC=on: Condenser fans will operate even with the compressor off, and will not operate during defrost.
• FCC=CY: The condenser fan will switch on and off with the compressor and will operate during defrost.
• FCC=OY: Condenser fans will operate constantly, even during defrost.

Defrost

Defrost modes are available in the tdF parameter: defrost via electric heater (tdF=EL) and defrost with hot gas (tdF=in).

The defrost interval depends on the presence of the RTC (optional). The internal RTC is controlled by the EdF parameter:

• EdF=in: Defrost is performed at each idF time - standard mode for controllers without RTC.
• EdF=rtC: Defrost is controlled in real-time based on the day enabled in parameters dd1...dd7 and the hours configured in parameters Ld1...Ld6.

Other parameters are used to control defrost cycles: maximum length (MdF) and defrost modes: timed or controlled by the evaporator probe (P2P).

When defrost is complete, the drip time is activated, and its duration is configured in the Fdt parameter. If Fdt=0, the drip time is disabled.

Synchronized Defrost

The defrost function requires:

• Configuration of a digital input of any controller as ixF=dEF.
• Connection (wired) of all digital inputs configured as ixF=dEF.

A maximum of 20 controllers can be used in this configuration. The synchronized defrost mode is enabled in the SYd=SYn parameter. After each defrost request (received from RTC, timed by idF parameter, manually via the defrost button, or by digital input configured as dEF), all controllers will activate their own defrost phase. When a controller concludes its defrost phase, it will release the defrost line and load the drip time. Upon completion of the drip time, normal regulation will be reactivated. The remaining controllers will follow the same logic.

Random Defrost

The random defrost mode can be activated with the Syd=rnd parameter. After each defrost request (received via RTC or timed with the idF parameter), a random delay will be added. Upon completion of the added delay, defrost will be activated. The random function serves to desynchronize the activation of defrost phases in cases where more than one cabinet is installed in an "island". The maximum defrost delay is linked to the following parameters:

• Mdf: Maximum time for any defrost.
• ndE: Delay multiplier.

Through the following formula: MAX_DEFROST_DELAY = Mdf*ndE (min).

For example: in case of ndE=10 and Mdf=20 min, the total interval to complete the defrost phase will be 200 min. (in the worst case).

NOTE: Pay attention to the available time interval for defrost. It must be used by selecting both MdF and ndE values. The higher the nde value, the better the result in terms of desynchronization. On the other hand, the longer the time interval required to complete defrosts.

Digital Output Configuration

Depending on the model, one or more outputs (relays) can be configured with one of the following functions:

• Configurable Output (oAx): Can be set for Light (LiG), Auxiliary Relay (AUS), Alarm (ALr), Defrost (dEF), Fan (FAn), Compressor (CP1, CP2), Condenser Fan (Cnd), or not in use (nu).
• Light Output (oAx=LiG): The relay functions as a light output.
• Digital Output Activation: The auxiliary output can be managed via digital inputs (oAx=AUS, i1F or i2F=AUS), with the AUX output switching on and off according to the state of the linked digital input.
• Auxiliary Thermostat: The auxiliary controller can be used to manage the auxiliary output. Parameters involved: ACH (regulation type), SAA (setpoint), SHY (differential), ArP (probe), Sdd (auxiliary output disabled during defrost).
• Timed Activation: Parameters btA (base time), Ato (auxiliary activation interval), AtF (auxiliary deactivation interval) can be used to define fixed activation and deactivation intervals.

General Notes:

If oAx=AUS and ArP=nP (no probe for auxiliary digital output), the AUX output can be managed:

• Via the digital input if i1F=AUS or i2F=AUS.
• Via the auxiliary button (if configured as AUS).
• Via serial commands (Modbus protocol).
• Via fixed time interval if Ato>0 and AtF>0 (if Ato=0 or AtF=0, the auxiliary output is disabled).

ON/OFF Output (oAx = ONF)

If oAx=onF, the output is activated when the controller is turned on and deactivated when it is turned off.

Deadband Regulation

With oAx=db, the output can be used to control, for example, a heating element. It is used to implement deadband regulation. In this case:

• Activation of oAx=db is SET-HY.
• Deactivation of oAx=db is SET.

Alarm Output

With oAx=ALr, the output functions as an alarm output. It is always activated when an alarm occurs. Its state depends on the tba parameter: if tbA=Y, the output is deactivated by pressing any key. If tbA=n, the alarm output remains active until the alarm condition is restored.

Activation During Energy Saving Cycles

With oAx=HES, the output is activated when the energy saving cycle begins.

Parameter Menu

The device has a parameter menu available on the keypad, where specific parameters can be modified. There are two parameter levels:

• PR1: User menu, standard parameters are located here.
• PR2: Protected menu, parameters with specific applications are located here. A password can be used to protect these values from unauthorized modification.

Navigation Menu

A tree-like menu has been implemented to simplify parameter search and modification. Follow the button functions (valid in both PR1 and PR2):

• SET: Used to access a submenu or save a value.
• UP and DOWN: Used to browse menu labels, submenu parameters, and modify a parameter's value.
• AUX/DEF: Used to return to the previous menu level (e.g., from a submenu parameter list to the main menu labels).

Modifying a Parameter Value

1. Access programming mode by pressing SET+DOWN buttons for 3s (the "°C" LED starts flashing).
2. Select the required parameter. Press the SET button to display the value.
3. Use the UP (▲) or DOWN (▼) buttons to change the value.
4. Press SET to memorize the new value and move to the next parameter.

To exit: Press SET+UP or wait 15s without pressing any button. NOTE: The modified value will be saved even if the programming mode times out.

Protected Level

All instrument parameters are located at the protected level. This level is password-protected. The default password is: "000". It is strongly recommended to change the default password after completing installation operations.

1. Access programming mode by pressing SET+DOWN buttons for 3s (the "°C" or "°F" LEDs start flashing).
2. Release the buttons and then browse to the Pr2 submenu.
3. Press the SET button and then enter the password.
4. Confirm with SET. If the password is correct, the "Pr2" label will flash for a few moments, and then the protected parameter menu will be enabled.

Protected Menu

1. Select the parameter you wish to modify.
2. Press the SET key to display the current value.
3. Use UP or DOWN to change the value.
4. Press SET to save the new value and move to the next parameter.

To exit: Press SET+UP or wait 15s without pressing any button.

NOTES:

• If there are no parameters in the User Level, the message "nP" will be displayed after 3s. Access the Pr2 submenu and follow the previous procedure.
• The modified value will be saved even if the programming mode times out.
• Modify the PSU parameter (when accessing the Protected Level) to change the current password.

Moving Parameters Through Levels

Each parameter present in the Protected Level can be moved to the User Level by pressing the SET+DOWN buttons. If a parameter is in the User Level, when viewing it in the Protected Level, access to the decimal point will also be available.

Keypad Management

Temporary Lock

Keep the UP (▲) and DOWN (▼) buttons pressed for more than 3s. The "oFF" label will appear, and the keypad will be locked. If any key is pressed for more than 3s, the "oFF" message will appear.

Temporary Unlock

Keep the UP and DOWN buttons pressed simultaneously for more than 3s until the "on" message appears.

Advanced Lock Function

The keypad can be selectively locked using the following parameters:

• brd: Select the lock type (UnL: all buttons unlocked; SEL: UP, DOWN, and DEFROST buttons are locked; ALL: entire keypad is locked).
• tLC: Delay after power-on before activating the advanced lock function.

NOTE: When the advanced lock function is active, the temporary lock and unlock functions are disabled.

ON/OFF Function

In case of onF = OFF, the instrument will turn off by pressing the button. The "OFF" message will be displayed on the screen. In this configuration, regulation is disabled. To turn the instrument on, press the key again.

WARNING: Any load connected to normally closed relay contacts is always supplied by the main voltage, even if the instrument is in standby mode.

Parameters

Menu List

• REG: Regulation - includes all parameters related to main temperature regulation.
• Prb: Probe setup - includes all parameters related to probe configuration.
• dis: Display - includes all parameters related to the user interface.
• dEF: Defrost - includes all parameters for controlling any defrost operation.
• FAn: Ventilators - includes all parameters for controlling the fans.
• AUS: Auxiliary - includes all parameters for auxiliary controllers.
• ALr: Alarms - includes all parameters for configuring alarm conditions.
• oUt: Outputs - includes all parameters for configuring digital outputs.
• inP: Inputs - includes all parameters for configuring digital inputs.
• ES: Energy saving - includes all parameters for defining the energy saving mode.
• Cnt: Counters - to view counter values.
• rtC: Real Time Clock - includes all parameters for configuring the internal clock.
• bLE: Bluetooth - includes all parameters for configuring Bluetooth communication.
• E2: EEPROM - includes all parameters for configuring the data logger.
• oth: Other - includes all parameters for configuring serial communication and the keypad.
• vis: Visualization - includes read-only parameters (probe values and FW information).

Regulation - REG

• SEt: Setpoint regulation: range from LS to US.
• LS: Minimum setpoint: (from -100.0°C to Setpoint; from -148°F to Setpoint) configures the minimum value for the setpoint.
• US: Maximum setpoint: (Setpoint to 200.0°C; Setpoint to 392°F) configures the maximum value for the setpoint.
• HY: Differential in normal mode: (0.1 to 25.0°C; 1 to 45°F) differential for setpoint. Compressor activation is T > SET + HY. Compressor deactivation is T<=SET.
• HYE: Differential in energy saving mode: (0.1 to 25.0°C; 1 to 45°F) differential for setpoint. Compressor activation is T > SET + HES + HYE. Compressor deactivation is T<= SET + HES.
• odS: Output activation delay after power-on: (0 to 255 min.) this function is enabled after powering on the instrument and delaying output activations.
• AC: Anti-short cycle delay: (0 to 50 min.) minimum interval between compressor stop and subsequent reset.
• AC1: Second compressor anti-short cycle delay: (0 to 255 s) delay before activating the second compressor, depending on the regulation mode selected in the 2CC parameter.

ACCESS TO PROTECTED LEVEL

1. Access programming mode by pressing SET+DOWN buttons for 3s (the "°C" or "°F" LEDs start flashing).
2. Release the buttons and then browse to the Pr2 submenu.
3. Press the SET button and then enter the password.
4. Confirm with SET. If the password is correct, the "Pr2" label will flash for a few moments, and then the protected parameter menu will be enabled.

Wiring Diagrams

The XR77CHC uses screw terminal blocks for connecting wires with a cross-section up to 2.5mm². Ensure the power supply matches the instrument's requirements before connecting wires. Separate probe wires from power supply wires, outputs, and electrical connections. Do not exceed the maximum current allowed for each relay; for heavier loads, use an appropriate external relay.

Diagram:

+------------------------------------------------------------------------------------+
|      16   17   18   19   20   21   22   23   24                                     |
|      OA2  OA3  OA4  N.C.  Line  Line  Line  Line  Line                               |
|      2    3    4    5    6    7    8    9    10   11   12                             |
|      Supply  Comp 10A  OA2  OA3  OA4  N.C.  Line  Line  Line  Line  Line             |
|      230V  N.C.  Line  Max  50-60Hz  7A 250V~  10(4)A 250V~  10(4)A 5A 7A 250V~      |
+------------------------------------------------------------------------------------+

Power Supply (terminals 2-3): 230 Vac @50 or 60 Hz.

The factory configuration has the relays set as follows:

• OA2: configured as dEF = defrost.
• OA3: configured as FAN = fan.
• OA4: configured as ALr = Alarm.

After installation and using different maps via the Copeland Connected app, keypad, or HOT key, the product may have different relay configurations. Always check the configuration in the OA2, OA3, and OA4 map to understand how the relays are configured and act.

Bluetooth Communication

The controller implements a Bluetooth 4.2 communication module. This allows communication with external devices (e.g., a mobile app can recognize and decode the device). All controllers use a unique MAC-ADDRESS for identification and communication. The communication range is approximately 5m (in the worst case, with the inner cover present and obstacles). Within this distance, communication interruptions or quality degradation may occur. A secure 6-digit pairing code may be required for connection. Follow the Copeland Connected app instructions for more information.

First Installation

After installation, the controller can be managed using the Copeland Connected APP. You will need to:

• Install the Copeland Connected APP on your mobile device (smartphone or tablet).
• Create a new user account before using the APP.

The owner is the only account that can:

• Manage the controller via Bluetooth.
• Extend access rights for a specific device to other users.

Resetting Factory Default Values

If a factory reset is required, follow these steps:

1. Access the Cloud web page and select the device you want to reset (search by name and/or MAC-ADDRESS).
2. Click on the "DELETE" link; the device will disappear from your list of devices.
3. Access the device controller (with the same MAC-ADDRESS).
4. Access the programming mode.
5. Access the "bLE" menu.
6. Select the rPS parameter (default device reset).
7. Select "Y" and confirm with the SET button.
8. Exit the programming menu.
9. Close and log in to the mobile APP.

After this, the controller will be reset to factory default settings and will be ready for a new association.

Technical Data

• Enclosure: Self-extinguishing ABS.
• Case: Front 32x74 mm; depth 60 mm.
• Mounting: Panel mounting in a panel with a 71x29 mm hole.
• Structure Protection: IP20.
• Front Protection: IP65.
• Terminal Blocks: Plug-in terminal blocks, wiring up to 2.5 mm².
• Power Supply: (depending on model) 230Vac ±10%, 50/60Hz; 110Vac ±10%, 50/60Hz.
• Power Consumption: 3.5VA max.
• Display: 3-digit LED, H=14.2 mm.
• Inputs: Up to 4 NTC, PTC, or PT1000 probes.
• Digital Input: Up to 2 free voltage contacts.
• Relay Outputs: Compressor SPST 16(5)A, 250VAC; OA2: SPDT 16(5)A, 250VAC; OA3: SPST 5(2)A, 250VAC; OA4: SPDT 7A, 250VAC.
• Data Maintenance: EEPROM.
• Action Type: 1B.
• Pollution Degree: 2.
• Software Class: A.
• Rated Impulse Voltage: 2500V; Overvoltage Category: II.
• 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% (non-condensing).
• Measurement and Regulation Range: NTC -40 to 110°C (-40 to 230°F); PTC -55 to 150°C (-67 to 302°F); PT1000 -100 to 200°C (-148 to 392°F).
• Resolution: 0.1°C or 1°C (selectable).
• Accuracy (ambient temp. 25°C): NTC or PTC: ±0.1°C ±1 digit; PT1000: ±0.1°C ±1 digit for Pb1, Pb2, and Pb3 probes; ±1.0°C ±1 digit for Pb4 probes.
• Internal Clock: Data maintenance up to 6 months with lithium battery.
• HOT-KEY Inputs: Maximum voltage allowed is 3.3VDC. DO NOT CONNECT ANY EXTERNAL POWER SUPPLY.

Normatives

XR77CHC Complies with the Following Standards

• ETSI EN 300 328 V2.1.1 (2016-11)
• ETSI EN 301 489-17 V3.1.1 (2016-11)
• IEC EN 60730-2-9: 2008 (Third Edition) and Am. 1:2011 along with IEC 60730-1:2010 (Fourth Edition)
• UL 60730-1 Fourth Edition and CAN/CSA-E60730-1:02 Third Edition along with its Amendment 1 dated 2007, Standards for automatic electrical controls for household or similar use - Part 1: General requirements.

Therefore, it meets the essential requirements of the following Directives:

• Radio Equipment Directive 2014/53/EU
• Electromagnetic Compatibility 2004/108/EC
• Low Voltage Equipment 2006/95/EC

FCC 15.247

XR77CHC Complies with the Following Standards

XR77CHC Complies with Part 15 of the FCC Rules

Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Unauthorized repairs, changes, or modifications could permanently damage the equipment and void your warranty and authority to operate this device under Part 15 of the FCC Rules.

NOTE: This equipment has been tested and certified to comply with the limits for a Class A digital device, and to conform to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment operates in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area may cause harmful interference, in which case the user will be required to correct the interference at their own expense.

XR77CHC Complies with RSS 102 Norms

This device complies with Industry Canada's RSS-210 standards. Operation is subject to the following two conditions: (1) this device may cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

The XR77CHC Instrument Complies with RSS 102 Norms

This apparatus complies with Industry Canada's CNR for radio apparatus RSS-210. Use is permitted under the following two conditions: (1) the apparatus must not produce interference, and (2) the user of the apparatus must accept any radio interference suffered, even if the interference may compromise operation.

Alarm Signaling

Alarm Reset

The "P1", "P2", "P3", and "P4" alarm probes start a few seconds after the error in the corresponding probe; they subsequently stop automatically after the probe restores normal operation. Check connections before replacing the probe. Temperature alarms "HA", "LA", "H2", and "L2" stop automatically as soon as the temperature returns to its normal value. The "EE" alarm can be reset by pressing any button. The "EA", "CA", and "dA" alarms will stop automatically as soon as the digital input is deactivated. The internal buzzer can be silenced by pressing any key if the parameter is tbA=Y.

Installation and Mounting

The XR77CHC instrument must be mounted on a vertical panel, in a 29x71 mm hole, and fixed with the special clamp supplied. The permitted temperature range for correct operation is 0 to 60°C. Avoid locations subject to strong vibrations, corrosive gases, dirt, or excessive humidity. The same recommendations apply to the probes. Allow air to circulate through the cooling holes.

Diagram:

    4
59.5
28.5

Official Features

The rear MDP/CX cover can be used to increase protection against water and dust.

Hot-Key Usage

Saving Parameters to HOT KEY (Load from Instrument)

1. Program a controller using the front keypad.
2. When the controller is on, insert the "HOT-KEY" and press the UP button; the "UP" message followed by "End" flashing will appear.
3. Press the SET key, and the "End" message will stop flashing.
4. Turn off the instrument and remove the "HOT KEY". Then turn the instrument on again.

NOTE: The "Err" message appears in case of a failed programming operation. In this case, press the UP button again to restart the load or remove the "HOT-KEY" to interrupt the operation.

Copying Parameters from HOT KEY (Download Parameter Value)

1. Turn off the instrument.
2. Insert a programmed "HOT KEY" into the 5-PIN port and then turn on the controller.
3. The list of parameters from the "HOT-KEY" will be automatically copied to the controller's memory. During this operation, the "do" message will flash.
4. A flashing "End" label will indicate that the operation was successful.
5. Remove the "HOT-KEY".
6. After a few seconds, the instrument will restart using the new parameters.

NOTE: The "Err" message appears in case of failed programming. In this case, turn off the unit and then turn it on again to restart the download, or remove the "HOT-KEY" to abort the operation.

Internal Memory

The controller has internal memory storing:

• Two different parameter maps identified as C1 and C2.
• Factory default settings for both parameter maps C1 and C2.

The controller is always shipped with:

• Parameter maps C1 = Factory default setting C1.
• Parameter maps C2 = Factory default setting C2.

Any modification of parameters in map C1 or C2 does not change the factory default values.

The parameter map can be switched between C1 and C2 using a digital input or a correctly configured button (ixF or LG2=CC).

Factory default values can be restored for both C1 and C2 parameter maps using the UP2=LdC function (load default setting).

NOTES:

• If the controller uses parameter map C1, its factory default configuration will be reloaded, overwriting parameter map C1. The same applies to parameter map C2.
• Factory default settings are read-only (they cannot be modified in the field).

Digital Inputs

The free voltage digital input is programmed with different configurations using the i1F and i2F parameters.

Door Switch (ixF=dor)

Indicates the door status and the corresponding output relay state via the odC parameter: no=normal (any change), FAn = Fans off; CPr = Compressor off; F-C = Compressor and fans off.

When the door is open, after the delay time configured via the did parameter, the door alarm remains active, the display shows "dA", and regulation is restored if rrd=Y. The alarm stops as soon as the external digital input is deactivated again. With the door open, high and low temperature alarms are disabled.

Start Defrost (ixF=dEF)

Defrost is initiated if the necessary conditions are met. After defrost completion, normal regulation will begin again if the digital input is deactivated, and the instrument will wait for the MdF safety time to expire.

Energy Saving (ixF=ES)

Energy saving mode will be activated/deactivated with the digital input.

Motion Sensor (ixF=EMt)

Detects motion sensor inputs.

Auxiliary Output (ixF=AUS)

The AUX output (if present and configured) will be activated/deactivated with the digital input.

External Warning Alarm (ixF=EAL)

Used to detect an external alarm. Does not block regulation.

External Lock Alarm (ixF=bAL)

Used to detect any critical external alarm. Immediately blocks regulation.

External Pressure Alarm (ixF=PAL)

Used to detect any external pressure alarm. This signal blocks regulation after nPS events within the dxd alarm time intervals.

Evaporator Fan Mode (ixF=FAn)

Used to control the evaporator fan.

Remote Vacation Mode (ixF=HdF)

Used to force vacation mode.

Remote ON/OFF Mode (ixF=onF)

Used to turn the device on and off remotely.

Light Output (ixF=LiG)

Used to control the light output.

Configuration Change (ixF=CC)

Used to change the controller configuration.

Motion Sensor Detector (ixF=EMt)

For using the X-MOD motion sensor. Please note that the motion sensor can only be connected to the HOTKEY port, therefore requiring digital input 2 to be correctly configured.

Wiring

XR77CHC, 16+16+7+5A

D.I.2

Evap.

Room

RS485

Hot Key

Supply

OA2

OA3

OA4

N.C.

Line

Max

50-60Hz

Comp 10A

7A 250V~

10(4)A 250V~

10(4)A 5A

7A 250V~

2 3 4 5 6 7 8 9 10 11 12

16 17 18 19 20 21 22 23 24

OA2 OA3 OA4 N.C. Line Line Line Line Line

230V

N.C.

Line

Max

50-60Hz

Comp 10A

7A 250V~

10(4)A 250V~

10(4)A 5A

7A 250V~