Festo CAMC-G-S3 Manual page 98

2 Product description of safety module CAMC-G-S3
Sequence of the safety function è Fig. 2.25 (Parameter è Tab. 2.56)
The sequence of the SSF0 safety function is shown in the following diagram:
Safety Function Request
SFR
P0E.06
n
P0E.0D
n
Max
n
Actual
P0E.09
P0E.01
n
min.
P0E.02
Fig. 2.25 Flow diagram SSF0
Term/abbreviation
Safety Function Request SFR
Monitoring
Safe State Reached SSR
Initial setting for speed ramp
n
act
Tab. 2.54 Legend for Fig. 2.25
The safety function SSF0 monitors the speed of the drive in the stationary state. The permitted speed
corridor is defined using the parameters "Safe speed - upper limit" (P0E.07/..., n
speed - lower limit" (P0E.08/..., n
When the actual speed leaves the speed corridor, the error "Safety condition violated" is generated
after an allowable time "Allowable time for limit violation" (P0E.03/...).
The SSF safety functions are characterised as SLS, SSR or SSM mostly depending on how
the final speed is parameterised:
– "Safely Limited Speed" (SLS) è Section 2.5.8,
– "Safe Speed Range" (SSR) è Section 2.5.9,
– "Safe Speed Monitoring" (SSM) è Section 2.5.10.
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Initial setting for speed ramp:
n
max
n = n
min
Monitoring
If (n
min
If (n
max
Safe State Reached
SSR
P0E.07
n
max_end
n
min_end
P0E.0D
P0E.08
Explanation
Safety function request
Monitoring
Safe state reached
initial values for the speed ramp
Actual speed
) (è Fig. 2.25, right-hand section).
min_end
= n + ( | n | * P0E.04) + P0E.05
act act
– ( | n | * P0E.04) – P0E.05
act act
> n ) => n = n
min_end min
< n ) => n = n
max_end max
P0E.03
P0E.0C
P0E.0C
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
min_end
max_end
t
) and "Safe
max_end