2 Product Specification
SmartDrive MX
Installation and operating instructions
Version 1.1 - May 2014
7
2.4
Functions
• Actuating distance and limit position scanner
The calculation of the available lifting stroke is based on the detection of the
two limit positions by the SmartDrive MX patented actuating distance scanner.
The corresponding valve position can be transmitted via the associated
EnOcean protocol to a master controller/gateway.
• Battery warning
The moment the battery drops below a critical voltage the SmartDrive MX will
transmit an error code to a master controller. Furthermore, the battery symbol
will appear on the display screen. From that moment onwards you have 30
days left before the batteries need changing.
The symbol for “adapted“ will disappear. You have to readapt the SmartDrive
MX after a battery replacement by pressing the key (See 5.1)
• Emergency actuating function
The SmartDrive MX opens the valve 100% as soon as the battery voltage
drops below a critical value.
• Internal PI controller
The moment the SmartDrive MX loses continuous radio contact (three times
wake-up without reception) to its taught controller / gateway the internal PI
controller will take over and will adjust the temperature according to the set
temperature value. A parallel option is local adjustability of target temperature
by operating the dial.
Additionally, the display screen shows the symbol -><-. A message sent by
the controller may appear on the smartphone/PC. Simultaneously the
SmartDrive MX uses the reclaim telegrams to check the availability of the
controller at every wake-up. The centre will reassume control as soon as
connection has been re-established.
• Radio interface
The SmartDrive MX comprises an EnOcean radio interface based on 868.3
MHz, as per ISO/IEC 14543-3-10 featuring extremely low energy
consumption. The EEP belonging to the SmartDrive MX is A5-20-04.
• Manual setting of target temperature manually
The manual setting option for target temperature is available via the dial at all
times. As soon as the dial is turned the SmartDrive MX will wake up and show
the set target value on the display. This temperature is shown for a range of
10°C to 30°C in 0.5°C steps.
• Room and supply temperature detection
Supply and room temperature are both detected by an integrated temperature
sensor. A specially developed correction algorithm clears the measured
values of other temperature influences. Thus, actual temperature values are
determined and forwarded for further processing.
• Frost protection
The lowest adjustable target temperature is 10°C. As soon as the actuator has
been taught and connection to the controller has been established, the room
temperature will not drop below 10°C. If the actuator detects via the internal
sensor that the room temperature has dropped below a value of 10°C, the
controller will receive additional communication. (error telegram 0x14 -> !20).
If radio connection is interrupted permanently, the internal PI controller will
take over on reaching the temperature threshold of 10°C and control the room
temperature in such a way that it reaches 10°C.
A precondition for this control is, however, that sufficient heating performance
is in place.
Summary of Contents for SmartDrive MX
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