Temperature compensator module with external probe - SLAVE
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DESCRIPTION
General features0
Slave module for multifunctional, expandable, control units with remote control EV87 and EV90
Suitable for all central heating systems, such as those related to residential buildings, schools, hospitals, factories etc.
Each setting may be controlled by an EV91A type control unit for maximum eight environments. EV91A module is
able to completely manage a mixing valve, a circulation pump and an auxiliary output.- Weekly programming with 6 ON and OFF schedules for each day of the week.
- Heating system activity period setting.
- Switch-on time optimization as a function of the external temperature.
- Programming for circuit thermal disinfection against legionellosis.
- Local programming or via SMS messages (with GSM modem) or via remote computer (with analog PSTN modem) via the communication bus (FANBUS) and the MASTER EV90 or EV87.
- Addressing through jumpers on the external terminal board.
- TX and RX signaling Led for connection with FANBUS, valve, circulation pump and auxiliary relay control.
Electric features- Power supply: 230Vca 50Hz.
- Consumption: 7 VA.
- 4 output relays: – 2 to control the mixing valve,- 1 to control the circulation pump,- 1 auxiliary synchronous with the clock.
- 1 communication channel – FANBUS.
- 1 analog input for external temperature (optional).
- 1 analog input for delivery temperature.
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ADVANTAGES
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Slave module for multifunctional, expandable, control units with remote control EV87 and EV90
Suitable for all central heating systems, such as those related to residential buildings, schools, hospitals, factories etc.
Each setting may be controlled by an EV91A type control unit for maximum eight environments. EV91A module is
able to completely manage a mixing valve, a circulation pump and an auxiliary output.Advantages -
TECHNICAL SPECIFICATION
CODE POWER SUPPLY CONTACTS RATING OPERATION ADMISSIBLE TEMPERATURE PROTECTION DEGREE EV91A 230Vac 50Hz 5A - 250Vac 0 ÷ 50 °C IP40 back-panel -
HOMOLOGATION AND INSTALLATION
Homologation
- Complies with the law 373, law n.10 dated 9 of January 1991 and D.P.R.412 dated 26 of August 1993.
- Complies with EN 60730-2-9; EN 60730-2-7 standards.
- ErP classification: ErP Class II; 2% (EU Reg. 811/2013 – 813/2013).
Installation and use- DIN-rail mounting (6 modules).
- To ensure an adequate protection install the device on the DIN-rail within a framework.
- The removable terminals facilitate the wiring and a possible replacement.
- EV91A scope is to obtain a certain AMBIENT TEMPERATURE by measuring the delivery temperature and the external temperature.
The user sets the ambient temperature through a configuration menu visible on the EV90 or EV87 display, and may assume various values according to the selected program. In the moment the device recognizes a program type, it calculates the DELIVERY TEMPERATURE necessary to obtain the ambient temperature associated with the program. This is calculated through interpolation
by using set values of the delivery temperature for four external temperature values ( 20°;10°; 0°;-10°). - This curve represents delivery temperature values based on the external temperature to obtain an ambient temperature of 20°C.
- For other ambient temperatures, the broken line moves along the straight line “+Ta -Ta”.
- Slave EV91A works properly only when it is connected to another unit by means of a two-wire serial bus (FANBUS), which has the function to arbitrate bus data and to check the state of all devices connected to it. This unit is called MASTER and may be the control unit EV90 or the control unit EV87.
- The MASTER sends to EV91A all information that makes it possible to control the hour, current date, and so on.
- TECHNICAL LITERATURE
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FAQS
