Function Expansion Unit FE260
6
Elster-Instromet
GmbH
1 Brief description
The Function Expansion Unit FE260 is used for expanding the functions of a volume
corrector in the LIS-200 range, such as for example the EK260 from software version 2.02.
In the current level of expansion it fulfils the following tasks:
•
Intrinsically safe power supply for the volume corrector.
•
Ex isolation for the digital outputs (pulse / signalling outputs).
•
Ex isolation of the internal data interface.
•
Remote data transmission on request, can also be retrofitted.
•
Local data transmission on request (cannot be retrofitted)
For the "AC" versions the power supply is provided as 230 V or 115 V alternating voltage
(mains voltage) and for the "DC" version it is provided as 10 to 30 V direct voltage.
Electrical
isolation
Pulse
outputs
(4 x
RS232
Interface
Optical
Interface
Local
interface
(optional)
Telecommu-
nications
network
230 V AC
(115 V AC)
Modem
(optional)
RS485
Interface
Pulse
ouputs
(4 x)
Intrinsically
safe circuits
Power
supply
8,5 V
Fig. 1: Block diagram of the FE260,"AC" versions.