Pid controller complete with driver for stepper motors specially designed for the management of electronic expansion valves in refrigerant circuits. (48 pages)
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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...
The RS485 serial board (accessory) can be used to create custom MasterAria is a product designed for small air heater and air handling unit (PlantVisor) or open (Modbus®) supervisory systems. (AHU) market, for both units with outside air only and with recirculation Finally, the pCOWeb board (accessory) can be used to connect MasterAria or heat recovery units.
Below is a description of all the operating modes available on MasterAria. The device can in any case be reconfi gured by the manufacturer of the cooling/heating system or the installer (based on the features of the Fig.
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In some systems, the set point is decided by the manager of the installation; satisfi ed, the dehumidifi cation symbol fl ashes. MasterAria starts in in these cases, the user may increase or decrease the set point by up to 3 cooling mode so as to bring the room temperature closer to the set °C to compensate for diff erent perception of the room temperature.
In cooling mode the set point is increased by the value of the parameter MasterAria off ers the possibility to perform programmed starts and stops 18 for the number of hours specifi ed on the display, after which MasterAria if the room only needs to be air-conditioned at certain times of the day.
RS485 serial board multifunction relays. (accessory). 3.1 MasterAria and accessories Below is a description of the family of devices made up of MasterAria and its accessories: Fig. 3.c Electrical panel • CTEM7*: Single-phase version Expansion board with 4 relays (code HYVC000R00) •...
“Acqua” LCD terminal for MasterAria (code HYPA001000, accessory) Allows the user to set the operation of MasterAria and display the alarms. The LCD ensures straightforward and user-friendly operation. In addition, it is fi tted with an NTC sensor that can be used for room temperature control.
(due to installation in a position that is not ideal) a fi xed value in degrees centigrade can be added or subtracted (see parameter 61 in the table of parameters). MasterAria +030220481 - rel. 1.0 - 12.11.2007...
Important: to avoid excessively discharging the batteries in the programming key, disconnect the normally closed digital inputs on MasterAria. If this is not possible, use the key with the power supply. The MasterAria parameters (source) can be copied to target devices with the same or later software version.
Example: • control of ON/OFF or modulating valves and dampers: three-point or MasterAria with board with two 0 to 10 Vdc outputs and 2 relay outputs: with 0 to 10 Vdc input. incorrect correct P39 =13...
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Fig. 4.a To display and set the manufacturer parameters (F in the table of parameters), access the programming menu as described above, and enter the second password (PASSWORD = 66) for parameter P92. MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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Bypass damper damper - Confi guration with P91=45 Tab. 4.c MasterAria does not distinguish between coils for heating or cooling only Note: and mixed coils. • The confi gurations corresponding to P91 = 44 and P91 = 45 The distinction is made by the user, by setting the proportional bands require the expansion board with two 0 to 10 Vdc outputs (standard in accordingly.
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Recommended confi guration Confi guration with electric heater MasterAria can manage an electric heater with ON/OFF or proportional associated probe description notes parameters 0 to 10 Vdc control. Intake-return probe/ When DIP6 OFF P22, P58, P59, Outside probe & P22=0: room...
OFF status (even when there is no network connection). When switching OFF->ON, MasterAria is started however it can then be switched off from the terminal or via serial connection. In OFF status, the valve is closed and the fan is off (after any extra fl ush cycles required for the heater)
• On/Off timer (1 time band) and “sleep” function; • control of ON/OFF or modulating actuators. Below is a description of the operation of MasterAria, divided into general functions, manual and automatic functions. TB (°C) Fig. 4.e Heat enable (heating/AUTOMATIC heating)
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Whenever switching from OFF->ON or changing operating mode, Fig. 4.i.a MasterAria runs a fan cycle at minimum speed (for the time P35) to make sure the room temperature is uniform. At the end of this interval, normal Automatic fan speed setting –AUTOFAN function (see the operation resumes.
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BT probe on the “acqua” terminal or on the intake/return probe From the hardware point of view, the three speeds are managed by the that can be assigned to one of the three MasterAria probes, by setting the three outputs NO1, NO2, NO3 on the MasterAria main control board.
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P+I algorithm only if the damper is on/ For correct use of the 3-point actuators, the time taken for complete off . The activation delta and the proportional band are parameters P111 and P117. opening or closing must be entered. MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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(in this case, the minimum time between two synchronisation cycles is 6 hours), a complete closing Below is an example of the activation sequence of the MasterAria loads; cycle is performed to ensure correct alignment between the position...
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Below is an example of the activation sequence of the MasterAria loads activate valve & heater after extra fl ush in heating mode; the AHU is fi tted with a hot/cold water valve or hot deactivate heater when thresh.
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TA room Max. coil temp. to °C TA (°C) temperature deactivate heater (see set point (control probe) P39=6) Fig. 4.p.b Extra fl ush time with heater Tab. 4.h.13 0 to 10 Vdc heater MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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The fan and the cold/hot water valve are managed in the same way as in heating/cooling mode (the fl ush function is not active). The heater is In AUTOMATIC mode, MasterAria measures the room temperature and managed in the same way as in heating mode. In AUTOMATIC OFF, the decides which mode to activate (cooling or heating) based on the set cold/hot water valve is closed and the fl ush function is active.
TMm - Diff implemented: Heating valve: when the outlet temperature falls below the minimum outlet temperature (TMm), MasterAria starts opening the heating 100% valve until opening completely at the value of (TMm-Diff ). Modulating heater only: same operation as for the modulating valve.
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In Freecooling/freeheating dampers this case, MasterAria starts reducing the action of the heating coil. MasterAria can manage the outside air damper, the recirculation damper and the heat recovery unit bypass damper. The fi rst two dampers have...
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Tab. 4.m 100% Heat recovery unit The MasterAria can manage cross-fl ow heat recovery units, with the corresponding bypass damper. The heat recovery unit is an excellent device for ensuring energy saving, as it exploits the air discharged from TA (°C)
Type SV ind Modbus® ind R/W Control probe This variable contains the value of the probe used to control the MasterAria (B1 or BT). The value considers any off sets, hysteresis, control algorithms etc. Set point setting This variable is used to read and where necessary overwrite the value of the set point confi gured on the panel.
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The alarm drop for the AHU. To warn the user of this risk, MasterAria manages the is signal-only, and does not aff ect the normal operation of the AHU in dirty fi lter alarm.
With dipswitch6 = ON, control probe is probe on “acqua” terminal Probe disabled Heating/cooling coil probe Cooling coil probe Heating coil probe With dipswitch6 = OFF, control probe is probe B1 (intake/return) Outside probe Outlet probe MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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ON/OFF timer & display clock The setting is achieved by adding the values shown below, each of which corresponds to the disabling of the corresponding function. EXAMPLE: Activation of AUTOMATIC mode only: 2+4+8+16 = 30 MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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(normally closed) Confi guration of digital input 4 (see P43) Confi guration of digital input 5 (see P43) Heater band hysteresis (see P39=6) °C/10 A Max. coil temp. to deactivate heater (see P39=6) °C MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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°C /10 A 114 Damper proportional band °C /10 A 115 Cooling valve proportional band °C /10 A 116 Heating valve proportional band °C /10 A 117 Heater proportional band °C /10 A MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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124 Unit model 100% outside air With recirculation 125 Max. outlet temperature max (127 = function disabled) °C 126 Outlet limit diff erential °C/10 A 127 Close bypass damper set point °C/10 A Tab.4.t MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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128 NOT USED Tab. 4.u Note SV type: type of variable (A=analogue, I=integer, D=digital) SV #: variable address with CAREL protocol on 485 serial board Modbus®: variable address with Modbus® protocol on 485 serial board MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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Important: drawing not to scale for graphics requirements. Key: P115 proportional band for cooling valve (°C/10) P116 proportional band for heating valve (°C/10) P109 dead band (°C/10) set point room temperature (control probe) heating valve cooling valve outputs MasterAria +030220481 - rel. 1.0 - 12.11.2007...
Fig. 5.f Note: The 0 to 10 Vdc outputs ( NO4 and NO5) only provide the control signal to the actuators. The power supply (230 Vac or 24 Vac) is the installer’s responsibility. MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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• dirty fi lter alarm via diff erential pressure switch connected to digital input DI5. TA (°C) P111 Fig. 5.h Key: P111 heater activation delta P112 heater hysteresis heater room temperature (control probe) MasterAria +030220481 - rel. 1.0 - 12.11.2007...
(230 Vac - 50 Hz) Fig. 5.j Note: The 0 to 10 Vdc outputs (NO4 and NO5) only provide the control signal to the actuators. The power supply (230 Vac or 24 Vac) is the installer’s responsibility. MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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(not wired). Set as normally closed; • • dirty fi lter alarm via diff erential pressure switch connected to digital if control is unstable, increase the proportional band and the integration input DI5. time. MasterAria +030220481 - rel. 1.0 - 12.11.2007...
The RS485 serial board (code HYSC00F0P0) can be used to communicate with custom supervisory systems, such as PlantVisor. The same accessory can be used to install MasterAria in systems based on Modbus® (enable Modbus® with parameter P54=1), see paragraph 3.8.
0T60 °C, humidity <90% rH non-condensing Pollution normal Category of resistance to heat and fi re PTI of the insulating materials for all materials PTI≥250 Period of electrical stress long across the insulating parts Tab. 7.g MasterAria +030220481 - rel. 1.0 - 12.11.2007...
0T60 °C, humidity <90% rH non-condensing Pollution normal Category of resistance to heat and fi re PTI of the insulating materials for all materials PTI≥250 Period of electrical stress long across the insulating parts Tab. 7.i MasterAria +030220481 - rel. 1.0 - 12.11.2007...
0T60 °C, humidity <90% rH non-condensing Pollution normal Category of resistance to heat and fi re PTI of the insulating materials for all materials PTI≥250 Period of electrical stress long across the insulating parts Tab. 7.k MasterAria +030220481 - rel. 1.0 - 12.11.2007...
0T60 °C, humidity <90% rH non-condensing Pollution normal Category of resistance to heat and fi re PTI of the insulating materials for all materials PTI≥250 Period of electrical stress long across the insulating parts Tab. 7.m MasterAria +030220481 - rel. 1.0 - 12.11.2007...
• The serial board is not optically isolated, each device must be supplied by a dedicated transformer and must not be earthed (the transformer I/O BOARD is already included on the MasterAria main board)..n Fig, 7.a Technical specifi cations Power supply 8 to 38 Vdc;...
The software version can be viewed by accessing parameter 0 (e.g. 10 = 1.0). revision note The parameters that are not pertinent to the application are no longer visible. Saturation limits (set point) added to the compensation algorithm. MasterAria +030220481 - rel. 1.0 - 12.11.2007...
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