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Copeland MultiFlex PAK User Manual

Compressor/condenser control board
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USER MANUAL
MultiFlex PAK
Compressor/Condenser Control Board

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Summary of Contents for Copeland MultiFlex PAK

  • Page 1 USER MANUAL MultiFlex PAK Compressor/Condenser Control Board...
  • Page 2 The information contained in this manual has been carefully checked and is believed to be accurate. However, Copeland assumes no responsibility for any inaccuracies that may be contained herein. In no event will Copeland be liable for any direct, indirect, special, incidental, or consequential damages re- sulting from any defect or omission in this manual, even if advised of the possibility of such damages.

  • Page 3: Table Of Contents

    4.2.5 Relay Output Ratings and Fuse Protection..............................11 4.3 The Analog and Digital Outputs ..............................12 4.3.1 Digital/Analog Output Types Supported by the MultiFlex PAK ....................... 12 4.3.2 The PAK Default Analog/Digital Output Assignments..........................12 5 BOARD STATUS LEDS............................ 13 5.1 Status LED......................................
  • Page 4 6.2.6.1 Exiting or Cancelling Quiet Mode................................18 6.2.7 Safety Features ........................................... 18 6.2.7.1 Discharge Trip ........................................ 18 6.2.8 Alarms............................................. 18 7 MULTIFLEX PAK E2 INTERFACE......................... 19 7.1 Adding/Deleting a PAK ..................................19 7.1.1 Adding a PAK..........................................19 7.1.2 Deleting a PAK ..........................................19 7.2 Setting the “Connected”...
  • Page 5 TABLE OF CONTENTS 8 MULTIFLEX PAK HAND-HELD TERMINAL INTERFACE ..............26 8.1 The HHT Interface ..................................... 26 8.1.1 Navigation ............................................ 26 8.2 PAK Start Screens....................................27 8.3 PAK Status Screens................................... 27 8.3.1 Status Screen 1........................................... 27 8.3.2 Status Screen 2........................................... 27 8.3.3 Status Screen 3...........................................

  • Page 6: Overview Of The Multiflex Product Line

    1.1.1 Hardware The MultiFlex PAK boards consist of two circuit boards: a bottom layer with 16 combination digital/analog inputs, and a plug-in top layer which contains a combination of 8 relay outputs and 4 analog DC voltage outputs, which can be used as digital or analog outputs.

  • Page 7: Mounting And Powering

    The additional board makes the MultiFlex combination boards considerably taller than the MultiFlex 16 and all previous-generation Copeland I/O boards. If you will be mounting these boards in an enclosure, the board will need at least 2.5" of clearance between the base board and the panel door.

  • Page 8: Powering The Multiflex

    Powering the MultiFlex All models of MultiFlex require a 24VAC Class 2 input power source. The MultiFlex PAK requires the power source to be center-tapped. Copeland supplies a wide variety of 24VAC transformers with varying sizes with or without center taps. Table 2-1 shows the transformer sizes and whether they are center-tapped or non-center-tapped.

  • Page 9: Multiflex Combination Input/Output Board Power Wiring

    MultiFlex -- refer to Section 2.3.2.1, New-Style MultiFlex Combination I/O Boards (with Isolated Power The MultiFlex PAK boards do not use a center tap. Instead, the Supply) for power wiring instructions. 0V terminal on the board should be connected to a separate Earth ground.

  • Page 10: Old-Style Multiflex Combination I/O Boards (No Isolated Power Supply)

    MultiFlex 16, 16AI, 8RO, 4AO, 8DO, a Gateway board, or any Figure 2-7 - Power Wire Lengths previous generation Copeland board that uses center- tapped power. Doing so will destroy the MultiFlex board. Rule 3: The secondary of the transformer must not be grounded on any side.

  • Page 11: The I/O Network

    3.2.1.1 Numbering the MultiFlex PAK N 135-8641); Belden 8761 (22 AWG, 300V not stocked by The network ID on the MultiFlex PAK is set using the first five Copeland); or a 600V-shielded 22AWG equivalent stocked by dip switches on dip switch bank S3. Refer to Figure 3-2 for Copeland (P/N 135-0600).

  • Page 12: Setting The Baud Rate

    Figure 3-3 shows the termination jumper settings for all MultiFlex boards. TERMINATION JUMPERS NO TERMINATION - IN (toward center) TERMINATION - OUT (toward left edge) Figure 3-3 - I/O Network Termination Jumper Settings 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.

  • Page 13: O Board Input And Output Setup

    4.1.1 Input Types Supported by the MultiFlex 4.1.2 The PAK Default Input Assignments Table 4-2 - MultiFlex PAK Default Inputs Table 4-1 - MultiFlex PAK Input Types Analog Input # Definition...

  • Page 14: Wiring

    This can only be done with sensors that keep the 24VAC Dew Point and Light Level Sensors signal isolated from its DC output signal (such as Copeland’s Dew Point Probe). If the output signal is not isolated from the These sensors are to be wired with shielded, 4 conductor at 24VAC input, you must use a separate transformer.

  • Page 15: The Relay Outputs

    4.2.3 Wiring The MultiFlex PAK boards have Form C relay contacts. Figure 4-3 shows how to wire the three-terminal Form C contact. One wire of the two-wire connection should always be connected to the middle terminal. The second wire must either be connected to the N.C.

  • Page 16: Output Fail-Safe Dip Switches

    Each relay output on the MultiFlex Combination I/O boards is rated for up to 240 VAC with a maximum current of 2 amps. Each relay is fused with a 2A fast-blow 5mm x 20mm fuse, Bussman GMA-2 or equivalent. 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.

  • Page 17: The Analog And Digital Outputs

    The Analog and Digital Outputs 4.3.1 Digital/Analog Output Types Supported The MultiFlex PAK board has four outputs that may act as by the MultiFlex PAK either digital outputs that pulse a +8VDC signal, or as analog outputs that use a variable voltage to drive a fan sequencer or VSD.

  • Page 18: Board Status Leds

    Code A and Code B LEDs The MultiFlex PAK has two LEDs labeled Code A and Code B. These LEDs indicate failure conditions. When these LEDs are OFF, there are no failures active. When one or both of these LEDs are blinking, there are failure conditions. The rate of blinking...

  • Page 19: Pak Software Overview

    Step strategy). If after bringing ON more compressors the suction pressure is still above the top part of the Suction Deadband, it must wait an amount of time equal to the Step ON delay. 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.

  • Page 20: Compressor Control Strategies

    13 equally sized compressors. The compressors are ensuring no compressors go inactive for long periods of time, split into five groups (one for each relay on the MultiFlex PAK). thus preventing compressor failure due to lack of use). The...

  • Page 21: Suction Float

    (highest deviations are excluded first). If desired, an alarm or notice may be generated when a poor- performing case is excluded. 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.

  • Page 22: Suction Float During Loss Of Communication

    E2’s own Condenser Control cell. setpoints: the voltage that will activate the first fan stage, and TD control in the MultiFlex PAK uses a control value that is the step voltage amount that will be added to the current calculated by subtracting the ambient air temperature near voltage every time a new stage is to be activated.

  • Page 23: Discharge Pressure Max

    Time Schedule application if you wish to enable Quiet Mode during night hours. • If the Multiflex PAK controller has a digital output as an Alarm Output, then the relay will close when High When the Quiet Mode input is ON, the E2 limits the maximum Discharge Pressure Trip is active.

  • Page 24: Multiflex Pak E2 Interface

    MultiFlex PAK E2 Interface The MultiFlex PAK is capable of communicating with an E2 RX refrigeration controller version 2.10 and above, or an Einstein RX refrigeration controller with software version 1.83 or above. In order to take advantage of new E2 and PAK features such as Danfoss EKC514 integration, the E2 must be version 2.60...

  • Page 25: Setting The "Connected" And "Read Setpoints" Attributes

    7.2.1 Verifying Online Status Setting the “Connected” and “Read Setpoints” Attributes If you have properly set up the MultiFlex PAK board on this E2’s I/O Network, after setting the Connected parameter, you Unlike other MultiFlex devices, the PAK will not automatically...

  • Page 26: Inputs And Set Points

    COMP Mode purposes. The Compressor Group Mode field explains the current state of the fixed step control algorithm in the MultiFlex PAK. There The TD field shows the current calculated value of the are seven messages that may appear here:...

  • Page 27: Condenser Fans

    “Staged Fans” strategy to control the stage relays OR by using “Fan Sequencer” to control the fan stages through an The “PAK State” field shows whether the MultiFlex PAK is analog sequencer), the status of each fan stage from 1 currently reading as Online or Offline.

  • Page 28: Screen 2: Comp Setpts

    The PAK Inputs screen is where you must assign each of the 16 PAK inputs to an input type. Other setpoints on this screen control how certain inputs are read (such as liquid level sensors, CTs, and the suction transducer). 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.

  • Page 29: Screen 6: Outputs

    The PAK Outputs screen is where you must assign the functions of each of the eight relay outputs and four analog/ digital outputs on the MultiFlex PAK. Figure 7-12 - PAK Screen 9: Safety The Safety screen is used to set up various safety shutdown features for the PAK such as discharge trip and suction temperature trip.

  • Page 30: Screen B: Alarms

    This screen is where you specify what type of advisories you want the E2’s PAK application to generate when failures occur. You may choose advisory types, setpoints, priorities, and delays for most alarm types generated by the PAK. 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.

  • Page 31: Multiflex Pak Hand-Held Terminal Interface

    Shortcut Keys (F1 and F2) At any time, you may press the F1 key on the Hand-Held Terminal to return to the Configuration Menu, or F2 to view the status screens. 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.

  • Page 32: Pak Start Screens

    #1 through #8. The third line of the display shows inputs #1 through #4 from left to right, and Copeland part number, and the firmware revision. the fourth line of the display shows inputs #5 through #8 from left to right.

  • Page 33: Status Screen 4

    Unused outputs will also be shown as “0.” Liq Level - The current value of the liquid level probe, or “NDF” if unused. If the liquid level sensor is digital, the value will read OK or NotOK. 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.

  • Page 34: Status Screen 8

    Comp - The Compressor Group Mode field explains the status will read ON. If Quiet Mode is disabled or not being current state of the control algorithm in the MultiFlex PAK. used, the status will read OFF. There are seven messages that may appear here: Cond Spray - The state of the Condenser Spray output.

  • Page 35: Pak Configuration Screens

    PAK Configuration Screens then press DOWN ARROW key twice to access the sub- menu’s first screen. Some (but not all) of the configuration of the MultiFlex PAK may be changed using the HHT. HHT users may change • General- General info about the system the PAK will...

  • Page 36: Comp Sp

    SpecialCode - This field is used by ECT personnel for service The Step OFF Delay is the amount of time after the last purposes. compressor group deactivation before deactivating the next compressor group or moving down one fixed step. 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.
  • Page 37 Screen 3 under the rating fields on this screen are for compressors #9 through General menu option. Leave all unused steps set to all groups #16. OFF (00000000). 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.

  • Page 38: Outs

    ON, the voltage will be 0VDC while in override. All overrides initiated with the HHT are cancelled when the HHT is unplugged from the MultiFlex PAK. Screen 7 Screens 3 and 4 are used to assign each of the four analog/ digital outputs on the PAK board to an output type.

  • Page 39: Condsp

    When the pressure falls below this setpoint and remains there for an amount of time equal to the Off Delay, the condenser spray output will turn OFF. 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.
  • Page 40 ON. VSD Max Output Quiet Mode - This setpoint sets the maximum VS fan speed when the PAK is operating in Quiet Mode. 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.

  • Page 41: Input

    The sixteen Input Setup screens are where the input types for MultiFlex PAK inputs #1 through #16 must be defined. The LiqDig OK - Choose the digital state of the liquid level sensor input types are listed and described in Table 4-1.

  • Page 42: Safety

    290 PSI (340 -50). An automatic reset will only occur if the PAK has been in safety shutdown for an amount of time equal to the Reset Delay. 026-1722 R6 MultiFlex PAK Board Manual ©2024 Copeland LP.
  • Page 43 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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