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Scope
This safety manual applies to the loop-powered isolators of the ProLine P224xx P1
series. The defined safety function of the devices is for the input signal range of
4 to 20 mA. The loop-powered isolators of the ProLine P224xx P1 series of Knick
Elektronische Messgeräte GmbH & Co. KG are certified by TÜV.
SIL Safety Manual
General Description
The loop-powered isolators of the ProLine P224xx P1 series were developed accord-
ing to SIL 3. The loop-powered isolators have no diagnostic function.
In single-channel mode, they are of Category 1 and have Performance Level c
according to the Machinery Directive 2006/42/EC.
Applicable Standards
The loop-powered isolator can be used in safety-related applications up to SIL 3
(systematic suitability). The standards relevant for the application shall be applied
(for example, EN 61508, EN 61511, EN 62061, and EN ISO 13849).
Safety Functions
The loop-powered isolator transmits a 4 to 20 mA measurement signal galvanically
isolated to the output. The input signals are transmitted linearly at a ratio of 1:1.
The error signal is defined for the ranges of < 3.6 mA or > 21 mA. The analog output
signal needs to be evaluated by a downstream logic unit (such as F-PLC).
With dual-channel redundant operation (1oo2), the values must be compared.
When a specific tolerance is exceeded, a safe state must be achieved.
Signal Level for Measurement Signal and Failure Information
Information
Signal level
Measurement signal
4 … 20 mA
Failure information (error)
< 3.6 mA ; > 21 mA
Summary of Contents for ProLine P224 P1 Series
Page 10: ...10 114 5 mm 111 5 mm 12 5 mm 112 5 mm 99 0 mm Maßzeichnung ...
Page 24: ...24 114 5 mm 111 5 mm 12 5 mm 112 5 mm 99 0 mm Dimension Drawing ...
Page 38: ...38 Dessin coté 114 5 mm 111 5 mm 12 5 mm 112 5 mm 99 0 mm ...
Page 52: ...52 114 5 mm 111 5 mm 12 5 mm 112 5 mm 99 0 mm Desenho Dimensional ...
Page 59: ...EX ...
