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Copeland XM678D User Manual

Controllers for multiplexed cabinets with interior stepper driver v2.8
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USER MANUAL
XM678D
Controllers for Multiplexed Cabinets with Interior Stepper Driver V2.8

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Summary of Contents for Copeland XM678D

  • Page 1 USER MANUAL XM678D Controllers for Multiplexed Cabinets with Interior Stepper Driver V2.8...
  • Page 2 Copeland 1065 Big Shanty Road NW, Suite 100 Kennesaw, GA 30144 USA 770-425-2724 • 1-800-829-2724 www.copeland.com Email: ColdChain.TechnicalServices@copeland.com...

  • Page 3: Table Of Contents

    1 INTRODUCTION ..............................1 1.1 General Precautions and Warnings ..............................1 2 BEFORE PROCEEDING............................2 2.1 Software Release of XM678D ................................2 3 GENERAL DESCRIPTION..........................2 4 QUICK REFERENCE GUIDE IN RUNNING THE SELF ADAPTIVE REGULATION ......3 5 INSTALLATION AND MOUNTING........................4 6 WIRING DIAGRAM AND CONNECTIONS ....................
  • Page 4 16.4.1 Control With Relay ......................................... 27 16.4.2 Control With Analog Output (If Present) ................................ 27 16.5 Anti-Sweat Heaters ..................................27 16.6 Auxiliary Output....................................28 17 TECHNICAL DATA ............................29 18 DEFAULT PARAMETER MAP ........................31 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 5: Introduction

    • Fit the probe where it is not accessible by the end user. The device must not be opened. • In case of failure or faulty operation, send the device back to the distributor or to Copeland (see address) with a detailed description of the fault.

  • Page 6: Before Proceeding

    The XM678D controller is provided with six (6) relay outputs to control the solenoid valve, defrost that can be either electrical or hot gas, evaporator fans, lights, an auxiliary output and an alarm output, and with the stepper valve driver. It also has six (6) probe inputs: for temperature control, defrost end temperature control, display and the fourth can be used for application with virtual probe or for inlet/outlet air temperature measurement.

  • Page 7: Quick Reference Guide In Running The Self Adaptive Regulation

    Quick Reference Guide in Running the Self Adaptive Regulation After wiring the XM678D; configure the type of valve, bipolar or unipolar, via tEu (Default tEu = bP: bipolar) Check the pressure gauge reading with the value of and tEP (Default tEP =0) parameters or through the dPP.

  • Page 8: Installation And Mounting

    Installation and Mounting The XM678D controller can function without any user interface, but normal application is with the CX660 keyboard. Figure 5-1 - XM678D Installation and Mounting The CX660 keyboard should be mounted on a vertical panel, in a 29 x 71 mm hole, and secured using the special bracket supplied (Figure 5-1).

  • Page 9: Wiring Diagram And Connections

    XM678D 61 62 Figure 6-1 - XM678D Wiring and Connections Valve Connections and Configuration 6.3.1 Type of Cables and Max Length To connect the valve to the controller, use only the shielded cables with section greater than or equal to 0.823 mm (AWG18).

  • Page 10: 4-Wire Valves (Bipolar)

    GREEN GREEN 6.3.2.2 5- to 6-Wire Valves (Unipolar) Table 6-3 - 5- to 6-Wire Valves (Unipolar) Connection numbering SPORLAN SAGINOMIYA ORANGE ORANGE YELLOW YELLOW BLACK BLACK 49 – Common GRAY GRAY 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 11: Wiring Connection Of Copeland Ex3 Valve

    The EX3 unipolar valve has to be connected to the following terminals listed in Table 6-4. Table 6-4 - EX3 Unipolar Valve Terminals XM678D Terminal 49 Grey wire Terminal 48 Blue wire Terminal 47 Black wire Terminal 46 Brown wire Terminal 45 White wire 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 12: Ex3-C230

    Absolute Maximum Power XM678D is capable of driving a wide range of stepper valves. Table 6-5 lists the maximum amount of current that the actuator can supply to the stepper wiring. The 640-0041 or 640-0040 (24V out, 20VA min) transformer should be used.

  • Page 13: Lan Connection

    A working LAN connection is required (green LED lit on all XM678D boards of the same LAN). Connect and configure the pressure transducer only on one XM678D of the network. Afterwards, the pressure value read by that single transducer will be used by each device connected to the same LAN.

  • Page 14: How To Connect The Monitoring System

    MODBUS address). 6.11 Digital Inputs Figure 6-9 - Digital Inputs • Terminals [30] through [33] are all free of voltage. • Use a shielded cable for distances higher than one meter. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 15: Battery Back Up Connection

    Connection of XEC Supercap XEC Supercap is designed to be used with Dixell products (XM678D, XEV, IEV, and others); compatibility with Dixell devices has to be verified in the user manual/technical sheet of the device. If problems occur, contact Dixell Service department at 770-425- 2724.

  • Page 16: User Interface

    User Interface Direct Command Interface Figure 8-1 - XM678D Front Panel Icons Cooling Output Light The output is activated when the icon is ON. A delay is present when the icon is blinking. Defrost Auxiliary relay MEASUREMENT UNIT Multimaster Energy Saving enabled °C, Bar, and...

  • Page 17: Keyboard Commands

    Table 8-3 - Modifying the Air Temperature Regulation Setpoint Wait for 10 seconds to exit. Press and release the SET button to display the air temperature setpoint (value displays for 60 seconds). 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 18: How To Program The Parameters (Pr1 And Pr2)

    A blinking “PAS” label displays. Wait for a few seconds. When a blinking “0 - -” displays, enter the password [321] by pressing the up arrow and down arrow keys. Press SET to save. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 19: Fast Access Menu

    Real thermoregulation setpoint: the value includes the sum of SET, HES and/or the dynamic setpoint if the functions are EXIT Press together or wait the time out for 60 seconds. Table 10-1 - Fast Access Menu 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 20: Multimaster Function Menu (Sec)

    If the alarm nod is present: enter the multimaster menu. Select and confirm the LOC section. Exit from multimaster menu. CAUTION At the end of programming, select the LOC section to switch OFF the icon. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 21: Synchronized Defrost

    45 min safety 45 min safety 45 min safety 12°C safety 12°C safety 12°C safety 06:00 1° 06:00 1° 06:00 1° 14:00 2° 14:00 2° 14:00 2° 22:00 3° 22:00 3° 22:00 3° 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 22: Commissioning

    Allows the user to select the maximum number of steps. At this number of steps, the valve should be opened completely. Read the manufacturer’s data sheet to set this parameter correctly. Configure the value of this parameter within the allowed range of functioning. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 23 The maximum current per phase used to drive the valve. (Used only with bipolar valves) Holding current per phase (only for bipolar valves): (0 to 100*10mA) The current per phase when the valve is stopped for more than 4 minutes. (Used only with bipolar valves) 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 24: Regulation For Superheat: Self Adaptive Or Manual Operating Mode

    With ATU = yES, controllers start searching the minimum stable value for the SH. The minimum admitted value in any case is LSH + 2°C (4°F). Take it in consideration, before setting LSH value. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 25: Valve Capacity Reducing - Mnf Parameter

    Close the valve at max speed until the complete closure is reached. Perform extra steps (Est). Re-open to the requested regulation position. This position is valid for all the valves and has to be done at set speed for each valve. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 26: Display Messages

    Not present (configuration) noP, nP Not available (evaluation) The keyboard is not able to communicate with the Verify the connection or call the Copeland XM668D or XM678D Technical Service. ALARM FROM PROBE INPUT Sensor brake down, value out of range or sensor P1: the cooling output works with Con and COF, incorrectly configured P1C, P2C to P6C.

  • Page 27: Alarm Recovery

    Alarms EA and CA (with i1F = bAL) recover as soon as the digital input is disabled. Alarm CA (with i1F = PAL) recovers only by switching OFF and ON the device. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 28: Use Of The Programming Hot Key

    • Err = failed programming. In this case, press the SET key if you want to restart the programming again or remove the unprogrammed Hot Key. Remove the Hot Key. NOTE: The upload procedure will overwrite everything previously uploaded from the last Hot Key upload. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 29: Controlling Loads

    PI regulator. Increasing the int parameter causes the PI regulator to react slowly and is true vice versa. To disable the integral part of regulation, set [int = 0]. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 30: Fans

    LAN or probe PtC or PtM not connected connected trA = AC if the device has the analog output OA6 = AC if the device will use the AUX relay for regulation 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 31: Auxiliary Output

    [255 - AMt] time performing a simple PWM modulation. 16.6 Auxiliary Output The auxiliary output is switched ON and OFF by means of the corresponding digital input or by pressing and releasing the down arrow key. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 32: Technical Data

    Screw terminal block ≤ 1.6 mm heat-resistant wiring and 5.0 mm Faston or screw Connections terminals An isolated transformer for the XM678D power supply must 24VAC - Power Supply be used. Do not share power with any other devices. Power Absorption...
  • Page 33 PTC probe: -67 to 302°F (-50 to 150°C) Pt1000 probe: -148 to 212°F (-100 to 100°C) Resolution 1°C or 1°F or 0.1°C (selectable) Accuracy (ambient temperature 77°F (25°C)) ±0.5 °C ±1 digit 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.

  • Page 34: Default Parameter Map

    MnF. For values bigger than [SSH + Pb] the valve is completely opened. Proportional band It allows to move the regulation band, above [-12.0°C to 12.0°C] reset or below the SH setpoint. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 35 20mA] or value at 0V for ratiometric probes. 4mA or at 0V [PrU=rE] -14 to P20 The value is absolute or relative according to PrU parameter. [PrU=Ab] 0 to P20 [PrU=rE] -10 to P20 [PrU=Ab] 0 to P20 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 36 [LSH + SHY] If a superheat alarm occurs, the delay time SHd expires before the controller shows an Delay of superheat alarm. 0.0 to 42min00sec (252) alarm signaling Format: min.10sec Resolution: 10sec 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 37 Autozero function 0 to 15h as the opening open percentage is under 20%, will force complete closer of the valve, and then will restart working. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 38 Compressor OFF Time during which the solenoid valve is OFF time with faulty 0 to 255min in case of faulty thermostat probe. With probe COF = 0, solenoid valve is always ON. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 39 Defines the percentage of the rPA with respect to rPb. The value used to regulate the Virtual probe room temperature is obtained by: percentage 0 to 100% (room temperature) value_for_room = (rPA*rPE + rPb*(100-rPE))/ 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 40 Defrost start delay Useful when different defrost start times are 0 to 255min after request necessary to avoid overloading the plant. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 41 [0.1°C to 25.5°C] temperature. n = fan follows FnC setting during defrost without temperature control Fan thermostat n; Y during defrost y = fan follows FnC setting during defrost with FSt temperature control 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 42 The fan works at maximum speed during this ON time for relay on [10 to 60min] time. If intended for fan, time is based in anti-sweat seconds; for anti-sweat regulation, the time is regulation based in minutes. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 43 Format: hours.10min Resolution: 10min Defines the stop regulation time after Sti. Stop duration 1 to 255min During this interval, the display shows StP message. Silencing alarm relay by pressing a n; Y 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 44 OnF; Htr; FHU; ES; HdY LiG = light activation; OnF = switch on/off the instrument; Htr = change type of action; FHU = not used; ES = activate energy saving; HdY = activate holiday function 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 45 0 to 255min activation delay between the detection and the successive signaling of the alarm. When [i3F = dor]: this is the delay to activate door open alarm. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 46 LAN ON/OFF n; Y n = the ON/OF command acts only in the local Synchronization section. Y = the ON/OFF command is sent to all the other sections. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 47 P1 calibration [-12.0°C to 12.0°C] to adjust. nP = not present; PtC = Ptc; ntC = ntc; CtC = P2 configuration nP; PtC; ntC; CtC; PtM ntc US; PtM = Pt1000 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 48 Microprocessor firmware release. Shows the original code of the parameter - - - Parameter table (read only) map. - - - Pr2 menu access (read only) Access to the protected parameter list. 026-1219 R4 XM678D V2.8 User Manual ©2024 Copeland LP.
  • Page 49 The contents of this publication are presented for informational purposes only and they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. Copeland reserves the right to modify the designs or specifications of such products at any time without notice.

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