2000 SERIES SENSORS INSTALLATION GUIDE Revision 3.1 June 1997
Isolators are - unlike the other 2000 Series devices - polarity sensitive. The connection must be
as follows:
Figure 12 : Class A Loop with Isolator IU2016
Note : According to the EN54-directive, isolators should be placed at least every 32 devices.
The use of isolators per zone is recommended.
Please consult local regulations and follow Fire Brigade requirements.
TECHNICAL DATA:
Operating Voltage........................................... 17 - 38 V
Non - isolated current...................................... <205 µA
Isolated current ............................................... <420 µA
Line resistance non-isolated ........................... < 1 Ohm
Line resistance isolated .................................. > 33 K ohm
Switching times non-isolated to isolated ......... < 5 ms
Switching time isolated to non-isolated ........... < 3.1 s once fault is removed
Operating temperature.................................... -20 to + 70 ºC (non condensing)
Storage temperature ....................................... -30 to + 85 ºC
Relative humidity............................................. 0 - 95 %
