Spirax Sarco SP500 - Page 30

IM-P343-35 CTLS Issue 5
30
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TRANSLATION RUN OVER
SP500 Electropneumatic Smart Positioner
Fig. 47
4 - 20 mA signal
3 4
+ -
6.2.2 Single loop applications
The SP500 is loop powered using the 4 - 20 mA input signal source providing a minimum signal of 3.6 mA
can be maintained.
Minimum current 3.6 mA
Maximum current 30 mA
Maximum voltage drop
without HART
®
option board < 7 V
with HART
®
option board < 7.4 V
Overvoltage protection Up to 30 Vdc
Protection against polarity inversion Up to 30 Vdc