Siemens FC300, Руководство по эксплуатации, Страница: 222 / 518

Description Channels 2 to 4
Fault current
Measurement range (mA)
Lower fault current (mA)
Upper fault current (mA) 4-20 NAMUR
3.8 - 20.5
3.5
22.6 4-20 US
4.0 - 20.8
3.75
22.6 4-20 NAMUR
4.0 - 20.5
2.0
22.0 4-20 US
4.0 - 24.0
2.0
25.0 0-20 NAMUR
0.0 - 20.5
0.0
22.0 0-20 US
0.0 - 24.0
0.0
25.0
Customized fail-safe mode
● Last reliable value
– Lower fault current
– Upper fault current
● Fail-safe value
● Current value
Galvanic isolation All inputs and outputs are galvanically isolated PELV circuits with 60 V DC isolation from
each other and ground.
Maximum test voltage: 500 V AC
Cable Standard industrial signal cable with up to 3 twisted pairs with overall screen can be con‐
nected between the transmitter and the control system. Individual pair or overall screen is
optional depending on user requirements.
Voltage range Max. 24 V DC (active)
14 to 30 V DC (passive)
11.5.1 Current output
All four channels can be configured as current output.
Current output configuration
The following process values can be assigned to the current output:
● Mass flow
● Volume flow
● Standard volume flow
● Density
● Temperature
● Fraction A (Volume flow or Mass flow)
● Fraction B (Volume flow or Mass flow)
● Fraction A %
● Fraction B %
● Control valve *
The process variable listed above with * is not available to be allocated to the 4 to 20 mA output
on Channel 1. All process variables are available through bus communication (SV, TV and QV
variables) and on all of Channels 2 to 4.
The accuracy specified for the analog output signal applies only within the range 4 to 20 mA.
Lower limit (4 mA) and upper limit (20 mA) can be assigned to any specific flow values.
Technical data
11.5 Outputs
MASS 2100 & FC300 (FCT030)
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Operating Instructions, 06/2017, A5E39789040-AA