Acrel Electric Co., Ltd.
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be no less than 200m.
This power module can provide voltage for the bus, couple the bus signal and monitor the voltage of
KNX/EIB system. Besides, the power supply can provide one 30V auxiliary DC voltage to provide voltage for
other external facilities (such as touch screen and IP gateway, etc.).
6.2
Parameter description
The power module must be electrically connected carefully as the power supply and signal coupling unit of the
whole system to avoid personal injury due to wrong connection. The maximum bus cable length between the power
module and other control modules shall be no more than 350m. The bus cable length between two power suppliers
on the same branch shall be no less than 200m.
The power module is connected with the whole system by the standard EIB wiring terminal and EIB standard
cable. If the system is powered on normally, the running indicator on the module is normally on; if the system
needs to be power off for reset (short-time power interrupted), it is ok to press the reset button on the module. At
this moment, the bus reset time will last for more than 20s (the key’s repeated trigger is ignored). The control
module connected on the bus recovers to its initial state; if a control module is short circuit or the whole system is
overcurrent during use and the power supply needs to be cut off for a long time, the bus needs to be powered off.
Then, the module will automatically cut off the power supply of bus and the indicator on the module will be on.
7.
Notes
1. Check whether its appearance is damaged before using the module. In case of damage, please ask the
retailer to replace it to prevent electric leakage during use and avoid personal injury.
2. Install the module with the power failure. If the module cannot be replaced with the power failure, please
ask the professional personnel to conduct the operation according to the situation.
3. Connect the module with the bus before debugging. Check whether its running indicator is normal.
Operate the programming button and check whether the programming indicator works normally. If the
indicator works abnormally, please contact the relevant staffs. Operate the programming button and
observe whether the programming indicator works normally.
4. Confirm whether the bus and computer are connected correctly before downloading the parameter.
5. Select the standard EIB twisted-pair cable as the communication cable and use the standard KNX wiring
terminal.
