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Technical specifications
9.1
Technical specifications
Technical specifications of the F-AI 8xI 2-/4-wire HART HA
Note
Power supply
The supply and input voltages of the ET 200SP HA system must always be generated with
voltage/current supplies with safe electrical isolation (SELV/PELV according to IEC/
UL61010-2-201) with a rated value of 24 V DC ±20% (
Note
Power failure bridging
For compliance with IEC 61131-2, EN 298 and the NAMUR Recommendation NE 21, use only
power supplies (230 V AC --> 24 V DC) with bridging of power failures of at least 20 ms (NE21,
IEC 61131-2), or at least 30 ms (EN 298).
You can find up-to-date information on SV components on the internet (https://
mall.automation.siemens.com).
You can find more information on power supplies in the ET 200SP HA Distributed I/O System
Equipment Manual in the following sections:
• Notes on the power supply (SELV/PELV)
• Notes on fail-safe I/O modules (F-I/O modules)
Note
The terms "sensor supply" and "encoder supply" or "sensor" and "encoder" are synonymous in the
context of this manual.
F-AI 8xI 2-/4-wire HART HA
Equipment Manual, 09/2021, A5E50557845-AA
).
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