Digital Inputs - Siemens SITRANS FST020 IP65 NEMA 4X Guia De Inicio Rapido

Appendix
A.1 I/O Connections and Wiring
R
L
V
c
0 ≤ R
Input
● Flow Range: ± 12 m/s (± 40 ft/s) bi-directional
● Flow Sensitivity: 0.0003 m/s (0.001 ft/s) flow rate independent

Digital Inputs

● Totalizer Hold Optically isolated diode
● Totalizer Reset Optically isolated diode
Output
● Current 4-20mA (Isolated)
● Relay Programmable Form C
● Pulse Rate Optically isolated transistor
Accuracy
● For velocities ≥ 0.3 m/s (1 ft/s)
● 4...20mA ± 1.0% - 2.0% of flow
● Pulse, relay output ±0.5% - 1.0% of flow
● Batch repeatability: ± 0.15%
● Zero Drift: 0.1% of rate: 0.0003 m/s (0.001 ft/s)
● Data refresh rate: 5 Hz
40
= 300 Ω minimum
Digital Inputs TB1-8 / TB1-9 and TB1-11 / TB1-12
= (10V + 0.02 x R ) max. 2 ≤ V
L
≤ 1000 Ω
L
Input voltage: 2-10 VDC
Input voltage: 2-10 VDC
externally powered 10-30 VDC
250mA, 30 VDC, 3 VA max
10mA, 30 VDC, max
Relay TB1-4 / TB1-5 / TB1-6
≤ 30 VDC
c
Operating Instructions, 03/2012, A5E03086489-05
FST020 IP65 NEMA 4X Quick Start