Carel MPXPRO User Manual
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Carel MPXPRO User Manual

Electronic controller
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MPXPRO
Electronic controller

User manual

I n t e g r a t e d C o n t r o l S o l u t i o n s & E n e r g y S a v i n g s
NO POWER
& SIGNAL
CABLES
TOGETHER
READ CAREFULLY IN THE TEXT!

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  • Page 1: User Manual

    MPXPRO Electronic controller User manual NO POWER & SIGNAL CABLES TOGETHER READ CAREFULLY IN THE TEXT! I n t e g r a t e d C o n t r o l S o l u t i o n s & E n e r g y S a v i n g s...
  • Page 3 The technical specifi cations shown in the manual may be changed without prior warning. The liability of CAREL in relation to its products is specifi ed in the CAREL general contract conditions, available on the website www.carel.com and/or by specifi c agreements with customers; specifi cally, to the extent where allowed...

  • Page 5: Table Of Contents

    1.1 Models ........................7 7. OPTIONAL CONFIGURATIONS 2. INSTALLATION 7.1 Other confi guration parameters ............55 2.1 MPXPRO: DIN rail assembly and dimensions ........11 2.2 Main board: description of the terminals .........12 8. TABLE OF PARAMETERS 2.3 E V driver expansion board (MX3OPSTP**): terminals and connections ........................13...

  • Page 7: Introduction

    1. INTRODUCTION MPXPRO is an electronic controller for the for the complete and advanced • defrost activated from the keypad, digital input, network control from management of stand-alone or multiplexed showcases or cold rooms, Master, supervisor; with or without built-in electronic expansion valve driver. It is designed for •...

  • Page 8: Functions And Main Characteristics

    MPXPRO has been designed to off er maximum installation fl exibility Fitted with clock (RTC) and RS485 card, this can independently manage a and signifi cant energy saving when fi tted with the CAREL E2V or PWM refrigeration unit, synchronise events over a LAN and connect to a CAREL or Modbus®...
  • Page 9 Optional card that adds the clock (RTC) and RS485 interface (CAREL and Available in version with ultracap technology to ensure the electronic Modbus® protocol) functions to the MPXPRO Slave controllers, making them MPXPRO Master controllers.
  • Page 10 Fig. 1.o Programming key (MXOPZKEYA0/IROPZKEYA0) Fitted with interchangeable connectors, the MXOPZKEYA0 programming key for MPXPRO is used to copy the complete set of parameters, storing up to six diff erent control parameter confi gurations. Below is the table of Fig. 1.s compatibility with MPXPRO fi rmware versions.

  • Page 11: Installation

    Note: for models with fi rmware version ≤ 1.2 only use the 1. press the sides; IROPZKEYA0 key. 2. remove the cover. Fig. 2.c To remove the covers: 1. press the sides of the cover at the points of coupling; 2. remove the cover. MPXPRO - + 0300055EN rel. 1.1 30/08/10...

  • Page 12: Main Board: Description Of The Terminals

    2.2 Main board: description of the terminals Below is the wiring diagram for the MPXPRO main board in the version Note: before performing any operations on the control board, with 5 relays. The connectors are screen printed to simplify the electrical disconnect the main power supply by turning the main switch in connections.

  • Page 13: Driver Expansion Board (Mx3Opstp**): Terminals And Connections

    Tab. 2.a Important: 2.5 Expansion board 0 to 10 Vdc output • To connect the valve, use a CAREL shielded cable code E2VCABS*00 (MX3OPA1002): terminals and connections (AWG22) or an alternative suitably sized 4-wire shielded cable: - reverse valve or valve size > = E3V45 -> solenoid required with...

  • Page 14: Functional Diagrams

    0 to 10 Vdc output incorporated; • on MPXPRO Slave boards (MX30S*****) the RTC and RS485 serial interface accessory (MX3OP48500) can be added) 2.7 Connecting the MCHRTF**** module The connection of the MCHRTF**** single-phase speed controller for 2.

  • Page 15: General Connection Diagram

    85 °C, use cables rated to 105 °C; • the connection cables must guarantee insulation up to 90 °C and if necessary up to 105 °C, when the temperature of Fig. 2.o MPXPRO - + 0300055EN rel. 1.1 30/08/10...

  • Page 16: Installation

    >= 2.1 (with max. 6 sets of parameters); IROPZKEYA0 can the controller; only be used on MPXPRO with fi rmware versions <=1.2 (with max. 2 sets 4. connect any digital inputs, Lmax=10m; of parameters).

  • Page 17: Commissioning Tool (Vpm- Visual Parameter Manager)

    MPXPRO can communicate directly with a PC using the “commissioning” port. This connection can be used to program and check the operation of an MPXPRO controller from the PC when installing and fi rst starting the Commissioning via the RS485 supervisor port (with system.

  • Page 18: Setting The Default Parameters/Loading The Parameter Sets

    2.12 Setting the default parameters/loading the parameter sets Introduction Seven diff erent sets of parameters are saved in the MPXPRO memory. Set 0, called the working set, contains the set of parameters used by MPXPRO during normal operation. This set is loaded whenever MPXPRO is started, and the parameters can be modifi ed at any time from the terminal, supervisor, remote control, VPM and programming key.

  • Page 19: User Interface

    • the value to be displayed on the user terminal can be confi gured by setting parameter /t1, and on the remote display by setting parameter /t2. MPXPRO - + 0300055EN rel. 1.1 30/08/10...

  • Page 20: Keypad

    & Tab. 3.b (*) The default parameters, or any of the sets of parameters loaded inside MPXPRO, only have eff ect on the parameters visible from the user terminal, based on the list of parameters. The parameters that are not visible on the user terminal are not aff ected by this procedure.

  • Page 21: Programming

    • with this procedure, available starting from fi rmware version 2.x, all the controller parameters can be accessed; • the type of parameters (F= frequent, C= confi guration, A= advanced,) and the related password can be modifi ed using the VPM program. MPXPRO - + 0300055EN rel. 1.1 30/08/10...

  • Page 22: Example: Setting Current Date/Time And Day/Night Time Bands

    6. press the UP button to select the next parameter, M=month, and repeat steps 3, 4 and 5 for parameters: M=month, d=day of the month, u=day of the week, h=hour, m=minutes; 7. to return to the list of main parameters press Prg/mute. Fig. 3.i MPXPRO - + 0300055EN rel. 1.0 30/08/10...

  • Page 23: Copy Parameters From Master To Slave (Upload)

    (Upload) The MPXPRO remote control is an instrument developed to simplify the programming and setup of an MPXPRO controller. As well as the All the parameters with upload attribute can be uploaded from a traditional remote keypad, it features a series of functions used to Master controller to the Slave controllers in the subnetwork.
  • Page 24 “Outputs” area: directly override the digital outputs Used to manually override the status of the various digital • parameter H3 is equal to 0 by default on all MPXPRO controllers, to outputs. Manually overriding an output disables the normal avoid interference within the operating range of the remote control;...
  • Page 25 Disabling the overrides The MPXPRO remote control can disable the overrides in four diff erent ways: with the “Restore ALL” button • Pressed briefl y (1 sec) from the main menu: disables the overrides of the digital outputs in the “Outputs”...

  • Page 26: Commissioning

    2. Commissioning tool software, VPM. This procedure is used to • S1: NTC outlet probe Sm; program and test the operation of the MPXPRO from a PC during • S2: NTC defrost probe Sd; commissioning when starting the system. In particular, this method •...

  • Page 27: Guided Commissioning Procedure (User Terminal/Remote Display)

    Used to select the type of temperature or ratiometric pressure probe to be used for input S6. When fi rst powered up, MPXPRO runs a procedure that guides the user in Par. Description setting the main parameters for the confi guration of the electronic valve Type of probe, group 3 (S6) and the serial network.
  • Page 28 CAREL or Modbus® supervisory network. On a Slave controller, it represents the address of the controller in the local network (1 to 5). In this case, the address in the CAREL or Modbus® supervisory network will be the address of the Master added to the address of the Slave.

  • Page 29: Checks After Commissioning

    – the number of Slaves; – any remarks. Important: all the alarms with manual reset can be reset by pressing Prg/mute and UP together for more than 5 seconds. See the chapter on Alarms. MPXPRO - + 0300055EN rel. 1.1 30/08/10...

  • Page 30: Basic Functions

    Tab. 5.b MPXPRO can adjust the values read by the probes. In particular, /c1 to c7 are used to increase or decrease the physical values read by the probes, Assign probe functions (parameters /FA, /Fb, /Fc) if confi gured as temperature probes.
  • Page 31 In this case, the possible confi guration may be: MPXPRO can adjust the values read by the probes and some of the • /FA=1: outlet temperature on probe S1 (Sm=S1);...

  • Page 32: Digital Inputs

    Introduction • A7=0: signal only alarm on the display, normal operation of the MPXPRO manages up to 5 physical digital inputs and one virtual digital controller is not aff ected (default); input. Of these, as already mentioned, DI1, DI2, DI3, DI4 are analogue/ •...

  • Page 33: Analogue Outputs

    Ad. Par. Description MPXPRO can also be fi tted with a driver for stepper electronic expansion Bypass high temperature alarm time after valves or a driver for PWM electronic expansion valves. In this case, the defrost and door open Tab.

  • Page 34: Control

    Evaporator with electric defrost Solenoid valve Thermostatic expansion valve Example: vertical showcase MPXPRO can manage defrosts with one or two outputs and one or two end defrost probes. The table below summarises the possible cases: Defrost Evaporator Control...
  • Page 35 Probe for night-time control 0 = virtual probe Sv; 1 = intake probe Sr tS1 to 8 Start time band 1 to 8 day tE1 to 8 End time band 1 to 8 day Tab. 5.o MPXPRO - + 0300055EN rel. 1.1 30/08/10...

  • Page 36: Defrost

    Defrost 1 to 8 - minute Defrost 1 to 8 - power defrost activation Tab. 5.r MPXPRO can manage the following types of defrost, depending on the setting of parameter d0: 1. heater, located near the evaporator; 2. hot gas;...
  • Page 37 Advanced functions. The operation of the fan during the Pump down and Hot gas phases depends on parameters F2 and F3. During the dripping and post-dripping phases, it is always off . MPXPRO - + 0300055EN rel. 1.1 30/08/10...
  • Page 38 Example. The following fi gure shows an installation with an MPXPRO The installer is responsible for evaluating the eff ects on the multiplexed Master controller and an MPXPRO Slave controller, highlighting the hot system if one of the following events occurs: gas, intake and equalizing valves that are activated in the cycle.

  • Page 39: Evaporator Fans

    There is a fi xed hysteresis of 1°C for (only if F0 =1 or 2) deactivation. Fan activation diff erential (including 0.15 °C/°F variable speed) Tab. 5.v Par. Description Evaporator fan cut-off temperature °C/°F (hysteresis 1°C) Tab. 5.x MPXPRO - + 0300055EN rel. 1.1 30/08/10...

  • Page 40: Electronic Valve

    A low superheat temperature in fact corresponds to a situation of probable instability due to the turbulent evaporation process approaching the measurement point of the sensors. The expansion valve must therefore MPXPRO - + 0300055EN rel. 1.0 30/08/10...

  • Page 41: Advanced Functions

    For parameters /Fd and /FE see paragraph 4.3. Type of probe, group 1 (S1…S3) Tab. 6.a.a As well as the outlet Sm, intake Sr and defrost probes Sd, MPXPRO also features: • defrost probe Sd2, used on the primary or secondary evaporator;...

  • Page 42: Digital Inputs

    PI algorithm stops operating and, if activated, Slaves receive the status of the virtual digital input and activate the fi xed activation control takes over. In these cases, if MPXPRO is not OFF, corresponding function, according to parameter A8.

  • Page 43: Digital Outputs

    H11 = 1, request active values, MPXPRO has four auxiliary variables that save the last NO C useful value available for 30 minutes. This may be useful in the event of a NO C supervisor power failure.

  • Page 44: Control

    • if one of the probes has an error or is missing, it is considered as signalling the request; • if both probes are faulty or missing, the controller switches to Duty Cooling setting mode: see paragraph 6.6. Fig. 6.d MPXPRO - + 0300055EN rel. 1.0 30/08/10...
  • Page 45 1 = control probe (Sreg) 2 = virtual probe (Sv) MPXPRO in standard mode uses the virtual probe Sv for control, that is, 3 = outlet probe (Sm) the weighted average of the outlet and intake probe (see parameter /4).

  • Page 46: Compressor

    (in the network) don’t all start at the same time, avoiding potential • defrost, dripping, post-dripping are running; problems of electrical overload. In models with Carel electronic • the door is open. When door opens the continuous cycle is expansion valve and ultracap technology, this parameter must be set stopped.

  • Page 47: Defrost

    This parameter is used to stop the compressor and the evaporator fans following a defrost so as to allow the evaporator to drip. The value of the The parameter determines whether or not, in a local network, MPXPRO parameter indicates the off time in minutes. If dd=0 no dripping time awaits an end defrost signal from the Master at the end of the defrost.
  • Page 48 Par. Description Skip defrost 0 = disabled; 1 = enabled; Nominal defrost duration for “Skip defrost” Maximum defrost duration Maximum secondary evaporator defrost duration Tab. 6.g.l MPXPRO - + 0300055EN rel. 1.0 30/08/10...

  • Page 49: Evaporator Fans

    Starting from version 2.8, MPXPRO features a special ultracap to guarantee (dP2 for the second evaporator). These increases allow longer and more the power required to close the electronic valve in the event of power eff ective defrosts.
  • Page 50 This is used to set the reference superheat value for the control of the electronic valve. It does not determine the actual superheat value, but rather the desired value. MPXPRO, with PID control, tends to maintain the Note: all the references relating to control of the electronic valve...
  • Page 51 P15, control can continue, even if not in perfect conditions, in emergency situations. Par. Description Fig. 6.o Support saturated temperature for -15.0 -50.0 50.0 °C/°F pressure probe error Tab. 6.i.j Sreg Control probe time Modulating thermostat function MPXPRO - + 0300055EN rel. 1.1 30/08/10...

  • Page 52: Protectors

    (parameter P10). ALARM Par. Description LowSH: low superheat threshold -10.0 LowSH: integration time 15.0 240.0 0 = function disabled LowSH: alarm delay 0 = alarm disabled Fig. 6.t Tab. 6.j.a MPXPRO - + 0300055EN rel. 1.0 30/08/10...
  • Page 53 LOP protection. This integration time acts in parallel to normal PID solenoid on the Master must be enabled as a network valve (parameter control. r7=1), the only type that can accept network requests. PL2 = 0 ==> LOP protection and alarm disabled MPXPRO - + 0300055EN rel. 1.1 30/08/10...
  • Page 54 Not used with PWM valves. SH: status variable that only displays of the superheat value calculated by MPXPRO and used to control of valve. PPu: status variable that only displays the electronic valve opening as a percentage, for both stepper and PWM valves.

  • Page 55: Optional Configurations

    H6: Terminal keypad lock confi guration Buttons Functions Parameter H6 is used to disable the functions relating to the individual buttons on the keypad. Par. Description Terminal keypad lock confi guration Tab. 7.h Tab. 7.d MPXPRO - + 0300055EN rel. 1.1 30/08/10...
  • Page 56 (MX3OP48500) with the controller off , when restarting the parameter is automatically set to 1. If set to 1 when the clock is not fi tted, the ‘Etc’ alarm is activated. MPXPRO - + 0300055EN rel. 1.0 30/08/10...

  • Page 57: Table Of Parameters

    Assign defrost temperature probe (Sd) - See /FA Assign intake temperature probe (Sr) - See /FA Assign superheated gas temperature probe (tGS) - See /FA 27-41 Assign saturated evaporation pressure/temperature probe (PEu/tEu) - See /FA 27-41 MPXPRO - + 0300055EN rel. 1.1 30/08/10...
  • Page 58 0 = compressor/valve always OFF; 100 = compressor/valve always ON Running time in continuous cycle hour Low temperature alarm bypass time after continuous cycle Defrost priority over continuous cycle 0 = no, 1= yes MPXPRO - + 0300055EN rel. 1.0 30/08/10...
  • Page 59 13 = glass temperature (Svt) 7 = saturated evaporation temp. (tEu) 14 = dewpoint (SdP) Assign probe for high (AH2) and low (AL2) temperature alarms (see AA) High and low temperature alarm reset diff erential 20.0 °C/°F MPXPRO - + 0300055EN rel. 1.1 30/08/10...
  • Page 60 Evaporator fan forcing time at maximum speed 0 = Eud function disabled (Electronic valve) Eud (Electronic valve) Electronic valve 28-52 0 = not used; 1 = PWM valve; 2 = CAREL E V valve Superheat set point 40-52 10.0 25.0 Proportional gain 15.0...
  • Page 61 0 = direct logic; 1 = reverse logic Confi gure evaporator fan digital output logic 0 = direct logic; 1 = reverse logic Light sensor threshold Confi gure function of output AUX4 see H1 MPXPRO - + 0300055EN rel. 1.1 30/08/10...
  • Page 62 End time band 1 to 8 day: minutes Date/time (Press Set) Date/time: year year Date/time: month month Date/time: day of the month Date/time: day of the week Date/time: hours hour Date/time: minutes Tab. 8.a MPXPRO - + 0300055EN rel. 1.0 30/08/10...

  • Page 63: Alarms And Signals

    • using UP or DOWN to see the description of the alarm: year, month, day, hours, minutes and duration in minutes of the selected alarm; • press Prg/mute again to return to the previous list. Fig. 9.a MPXPRO - + 0300055EN rel. 1.1 30/08/10...

  • Page 64: Table Of Alarms

    Alarm on unit 1 to 5 in the n1...n5 automatic unchanged unchanged unchanged unchanged network Upload procedure with errors up1...up5 unchanged unchanged unchanged unchanged on unit 1 to 5 Displayed probe wrong or unchanged unchanged unchanged unchanged disconnected Tab. 9.b MPXPRO - + 0300055EN rel. 1.0 30/08/10...

  • Page 65: Alarm Parameters

    0 = not enabled; 1 = enabled Confi gure solenoid/compressor control Tab. 9.f during external alarm (immediate or delayed) with fi xed 15 min OFF time 0 = always OFF; 100 = always ON Tab. 9.d MPXPRO - + 0300055EN rel. 1.1 30/08/10...

  • Page 66: Haccp Alarm Parameters And Activating Monitoring

    Alarm 1 to 3 – Hour hour Alarm 1 to 3 – Minutes minute Alarm 1 to 3 – Duration 240 minute HACCP alarm delay 0 = monitoring disabled Tab. 9.i ALARM Ad Htd Fig. 9.c MPXPRO - + 0300055EN rel. 1.0 30/08/10...

  • Page 67: Technical Specifications

    LAN connection up to 100 m total, with shielded cable AWG20 (rx-tx, gnd); Serial communication (master only) RS485, CAREL and Modbus® protocols (auto-recognized), 19200 bps, 8 data bits, no parity, 2 stop bits Programming key available on all models MPXPRO - + 0300055EN rel. 1.1 30/08/10...

  • Page 68: Cleaning The Terminal

    MPXPRO: complete controller Slave 3 relay, 115-230 Vac, 2 PWM, NTC/Pt1000, connectors kit with horizontal screws MPXPRO: complete controller with E2V management (with RS485 e RTC) Master 5 relay, 115-230 Vac, E2V Stepper & Ultracap, 2 PWM, 0 to10 Vdc,...
  • Page 69 Examples application code description MPXPRO: complete Master controller with EEV management (including RS485 and RTC) 5 relays + Stepper EEV, 2 PWM, MX30M25HO0 0 to 10 Vdc, NTC/PT1000, horizontal screw connector kit IR00UGC300 Terminal (green LEDs, keypad, buzzer, commissioning port, IR) NTC0*0HP00 NTC probe, IP67, cable l= *, -50T50 °C...
  • Page 70 Notes: MPXPRO - + 0300055EN rel. 1.0 30/08/10...
  • Page 72 Agenzia / Agency: CAREL INDUSTRIES - Headquarters Via dell’Industria, 11 - 35020 Brugine - Padova (Italy) Tel. (+39) 049.9716611 - Fax (+39) 049.9716600 e-mail: carel@carel.com - www.carel.com...

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