Siemens SITRANS FC430 Operating Instructions Manual page 233

Table 11-12 Current output (Channels 2 to 4)
Description
Signal range
Resolution
Load
Time constant (adjustable)
Fault current
Measurement range (mA)
Lower fault current (mA)
Upper fault current (mA)
Customized fail-safe mode
Galvanic isolation
Cable
Voltage range
Table 11-13 Digital output
Description
Pulse
Resolution
Frequency
Resolution
Load
Time constant (adjustable)
Active
Passive
Functions
FC430 (From firmware 4.0)
Operating Instructions, 06/2017, A5E39789392-AA
Channels 2 to 4
0/4 to 20 mA
0.4 μA
● Ex i: <470 Ω
● Non-Ex: <770 Ω
0.0 to 100 s
4-20 NAMUR 4-20 US
3.8 - 20.5 4.0 - 20.8
3.5 3.75
22.6 22.6
● Last reliable value
– Lower fault current
– Upper fault current
● Fail-safe value
● Current value
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
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.
Max. 24 V DC (active)
14 to 30 V DC (passive)
Channels 2 to 4
41.6 µs to 5 s pulse duration
1 μs
0 to 12.5 kHz, 50 % duty cycle, 120 % overscale provision
0.2 Hz
< 750 Ω
0 to 100 s
0 to 24 V DC, 87 mA, short-circuit-protected
3 to 30 V DC, 100 mA, short-circuit-protected
● Pulse
● Frequency
● Alarm class / NAMUR status
● Individual alarms
4-20 NAMUR 4-20 US
4.0 - 20.5 4.0 - 24.0
2.0 2.0
22.0 25.0
Technical data
11.5 Outputs
0-20 NAMUR 0-20 US
0.0 - 20.5 0.0 - 24.0
0.0 0.0
22.0 25.0
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