Danfoss VLT Safety Option MCB 150 - Functional Proof Tests

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t
f
t
f
A
B
C
A Ramp stop function 1
C Actual ramp stop function
B Ramp stop function 2
Illustration 4: Safe Stop 1 Safety Functions Active
See illustration 4 for an example of first activating a Safe Stop 1 function with a given ramp and afterwards activating a 2
nd
Safe Stop 1
function with a steeper ramp. The lower graph shows the actual ramp function.
3.2.5 Functional Proof Tests
The functional safety standards require that functional proof tests are performed on the equipment used in the system. Proof tests are
performed at user-defined intervals and depend on PFD and PFH values.
Functions and Systems Overview
Installation Guide | VLT® Safety Option MCB 150/151
AQ279747441421en-000101 / 130R0292 | 17
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