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FC6x0
Transmitter
11.2 Power supply
Power supply
Alternating-current voltage (rms):
▪ Power supply
▪ Power frequency: 47 – 63 Hz
Direct-current voltage:
▪ Power supply
1)
for option S2x (Marine approval) supply voltage is limited to 24 V; in addition NE21
testing indicates a tolerable area of 24 V
Power consumption
P ≤ 10 W (including sensor)
Power supply failure
In the event of a power failure, the flow meter data are backed up on a non-volatile
internal memory. In case of devices with display, the characteristic sensor values, such
as nominal diameter, serial number, calibration constants, zero point, etc. and the error
history are also stored on a microSD card.
Galvanic isolation
All circuits for inputs, outputs and power supply are galvanically isolated from each other.
11.3 Cable specifications
For remote type devices, a connecting cable has to be used to connect the sensor to the
transmitter. The device specifications, stated in this document, are valid only if one of the
original Siemens connecting cables is used.
Cable length limitations to be considered:
Cable type
Standard connecting cable
Fire retardant connecting cable
Cables longer than 30 m must be ordered as separate item. For this purpose please
consult our Siemens Service team.
If Marine option S22...S27 is ordered, a Marine certified cable will be delivered.
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1)
: 24 V
+20 % -15 % or 100 – 240 V
AC
1)
: 24 V
+20 % -15 % or 100 – 120 V
DC
Option code
L5x/L6x
L7x/L8x
A5E52748375-AA, 2023/09
+10 % -20 %
AC
+8.3 % -10 %
DC
± 20 % under NE21 test conditions.
DC
Maximum length to
keep the specification
30 m
30 m
Power supply
Maximum allowable
length in hazardous
areas
171 m
95 m
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