Commissioning
58 FEX300, FEX500 OI/FEX300/FEX500-EN
6.3.2 Unit behavior with auxiliary power switched on
After switching on the auxiliary power, DIP switch 8 is polled:
Status
ON The address defined by DIP switches 1 ... 7 applies.
The address can no longer be changed via the bus once the unit is in operation,
since DIP switch 8 is polled only once when power is turned on.
OFF
(Default)
The transmitter uses the address stored in the FRAM of the gateway. At shipment
the address is set to “126” or to the address specified by the customer.
Once the unit is in operation, the address can be changed via the bus or directly on
the unit using the keys on the display board. The unit must be connected to the bus.
6.3.3 Voltage / current consumption
• Average current consumption: 10 mA
• In the event of an error, the integrated FDE (= Fault Disconnection Electronic) function
integrated in the device ensures that the current consumption can rise to a maximum of 13
mA.
• The upper current limit is restricted electronically.
• The voltage on the bus line must lie in the range of 9 ... 32 V DC.
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