Outputs - Siemens SITRANS F Series Operating Instructions Manual

Technical specifications

12.3 Outputs

12.3 Outputs
Table 12-4 Current output
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 12-5 Relay output
Description
Type
Load
Functions
Table 12-6 Input/output
Description
Pulse
Resolution
Frequency
Resolution
Load
Time constant (adjustable)
Active
80
Channel 2
0/4 to 20/24 mA
0.4 μA
<770 Ω
0.0 to 100 s
4...20 NA‐ 4...20 US
MUR
4.0 - 20.8
3.8 - 20.5
3.75
3.5
22.6
22.6
• Last valid value
– Lower fault current
– Upper fault current
• Fail-safe value
• Current value
Galvanically isolated PELV circuit 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 connec‐
ted between the transmitter and the control system. Individual pair or overall screen is op‐
tional depending on user requirements.
14 to 30 V DC (passive)
Channel 3
Change-over voltage-free relay contact
30 V DC (30 V AC peak), 100 mA
• Alarm class / NAMUR status
• Alarm item
Channel 4
41.6 µs to 5 s pulse duration
1 μs
0 to 10 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
4...20 4...24 mA
4.0 - 20.5 4.0 - 24.0
2.0 2.0
22.0 25.0
Operating Instructions, 11/2021, A5E50387341-AA
0...20 mA 0...20 mA
0.0 - 20.5 0.0 - 24.0
0.0 0.0
22.0 25.0
SITRANS FST090