User Guide
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3 Technical Specifications
eBus Interface
Interfaces: Transreceiver (read and write) for eBus conforming to the
“eBus Specification, physical Layer OSI1 V1.3.1 last revised 3/2007,
eBus Interest Group“
Data rate: Serial, 2400 Baud, 8-bit UART mode (RS232, 2400, 8,N,1)
Switch threshold: Adjustable via trimmer; adjustment range: 7-14V
Low active bus: HIGH (1) => 15 - 24 VDC, LOW (0) => 9 - 12 VDC
Input / Connection: 2-pole, bipolar input (marking: A and B)
Screw terminals (up to 2.5 mm² wire cross section)
eBus voltage: 7-24 VDC, nominal 18V, current consumption max. 10 mA
Serial Interface (V24 Standard)
Connector: D-Sub, 9-pin male
Interface: RS232 UART level (+/- 3-12 V)
Connecting cable: Null modem cable (Article number 43004; available in the ESERA Online Shop)
Supply voltage
Input voltage: 9-32 VDC
Current: max. 500mA
Environmental conditions
Protection type: IP20
Protection class: III
Temperature,operation: 0 °C to +60 °C
Humidity: 10 to 92 % (non-condensing)
Dimensions: 35 x 90 x 70 mm (WxHxD)
Conformity
EN 50090-2-2
EN 61000-4-2, ESD
EN 61000-4-3, HF
EN 61000-4-4, Burst
EN 61000-4-5, Surge
EN 61000-6-1, interference immunity
EN 61000-6-3, interference radiation
RoHS
4 Display LED
The module has various display LEDs. In the following the function of the displays:
Display
Designation
Function
LED PWR, green
(front plate)
USB Power
Display for supply voltage, Bus coupler connected to PC
LED Data, green
Data
flashes during eBus activity
lights up permanently when no eBus signal is connected
LED green in the
clamping area
eBus Power
Power indicator for eBus connection
5 Calibration eBus coupler (switching threshold)
The signal level of the eBus is variable within a certain range due to various factors, such as line length, number
and current consumption of the bus participants, etc. To ensure good data recognition in your system
environment, our eBus coupler is equipped with an adjustment controller.
The adjustment knob is located in the area of the eBus input terminal. With the help of the small screwdriver
supplied, an adjustment is possible.
For the adjustment, we recommend an evaluation of the received data, e.g. via debug output window (e.g.
in IP-Symcon) or a terminal program. For adjustment, insert the screwdriver carefully into the opening in the
connector panel with the number 8 and turn it to the left in small steps or to the right. The eBus coupler is
correctly calibrated if the Sync characters "AA" in your evaluation software are correctly can be received. The
“Data” LED on the front panel flashes when data is received and sent.