Installation manual
Page 60 of204
4.3.3.1.2 Single-pole switching relay or semi-conductor output with external switching amplifier
and testing
When using external switching amplifiers or downstream electro-mechanical, pneumatic or
hydraulic components, the setup for testing the complete chain and a message/warning feature
for detected faults is required in order to achieve PI c or higher.
Positively guided auxiliary contacts are especially needed for electro-mechanical devices and
message contacts for the valve position are required for hydraulic or pneumatic components.
The message/warning device must ensure that the operator recognizes the dangerous situation
immediately.
The achievable PI is mainly depending on the test rate, PI d acc. to EM 13849-1 can maximally
be achieved.
DO0_P
X43
X42
DO0_M
DO1_P
DO1_M
NC
NC
DO.1
DO.2
X65
DI13
DI14
P1
P2
L +
L -
Fig.: Single-pole relay output with testing
Safety note:
Only conditionally recommended for safety applications! In this context see also the notes
in EN 13849-1 concerning the application and the required fault exclusions.
For PI c or higher a test rate of > 100 * the request rate is required.
For PL c and higher a message/warning feature is required, which informs the operator
immediately about a dangerous situation
Summary of Contents for PSCBR-C-10 Series
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