Festo CAMC-G-S3 Manual page 88

2 Product description of safety module CAMC-G-S3
After the request from SS2, the safety module starts a slowdown ramp:
– a time delay is defined using "Time delay until monitoring starts" (P0D.00). Only after this time is
compliance with the current speed limit values monitored.
– the length of the slowdown ramp is specified using "Time for slowdown ramp" (P0D.01).
– The starting value of the monitoring slowdown ramp, n
in the diagram and can be parameterised via "Slowdown ramp - Starting value factor" (P0D.03) and
"Slowdown ramp - Starting value offset" (P0D.04). The ramp ends at speed = 0 (tolerance is spe­
cified by the limit value for idle detection "Speed threshold value for idle detection" (P06.09)).
– A time delay for the start of the slowdown ramp can be parameterised using "Slowdown ramp -
time delay to start" (P0D.05).
If braking at SS2 is not to be controlled by the safety module but by the functional con­
troller, then P0D.05 can be used to parameterise a delay to the ramp, in order to com­
pensate for the reaction time of the controller.
Active limiting of the speed in the basic unit is switched on using the parameter "Actively limit speed in
the basic unit" P0D.06:
– Current speed values are transmitted at regular intervals to the basic unit. The speed limits must
have a safety distance to the monitoring limits, which is set using the parameter "Speed offset for
limiting in the basic unit" (P0D.09).
– At the end of the monitoring slowdown ramp, the speed limit = 0.
– The basic unit actively limits the speed setpoint and, depending on the parameterisation, also the
travel speed of running positioning operations.
The quick stop is activated in the basic unit using the "Activate quick stop ramp in the basic unit" para­
meter (P0D.07):
– When SS2 is requested, the quick stop ramp in the basic unit is activated automatically and the
drive brakes to zero using the quick stop ramp.
Please note
To avoid a violation of the safety condition when braking via the quick stop ramp of the
basic unit, please ensure that the ramp time parameterised via P0D.01 is greater than
the braking time of the basic unit from maximum speed at the quick stop ramp.
The SafetyTool will indicate a possible conflict during parameterisation.
After termination of the request of the SS2 function, the internal control signals for quick stop and
speed limiting in the basic unit are reset.
88
, is calculated according to the equation
max
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English