Festo CAMC-G-S3 Manual page 34

2 Product description of safety module CAMC-G-S3
monitored using test pulses during operation. These units are activated exclusively by means of the
STO safety function è Section 2.5.1.
b) manipulation of the brake control (connection [X6] ):
The brake control is switched off redundantly in the safety module using the appropriate control
signals to the basic unit. The brake control is also monitored continuously during operation using
test pulses. Thus, the safe brake output of the basic unit can also be used to activate clamping
units. These units are activated exclusively by means of the SBC safety function è Section 2.5.2.
By contrast, the holding brake is only vented when the basic unit signals to the safety module via
another control cable that it also wishes to enable the holding brake function. This logic operation
allows a simple restart of the axle after SBC.
In the case of system errors on the safety module, dynamically-activated hardware cir­
cuits ensure that the control cables for the driver supply and for brake control are
switched off quickly and safely.
c) Triggering a quick stop in the basic unit:
The safety module can trigger a quick stop in the basic unit via an internal control cable. The reac­
tion time of the basic unit is very short (< 2 ms).
When the signal is activated, in rotational speed control and positioning modes, the basic unit
brakes at the Quick Stop ramp down to a speed of zero. After this, depending on the operating
mode, the rotational speed is regulated to 0 rpm or the position to the current position.
The function is used to implement the safety function SS1 or SS2 type b) è Section 2.5.3
and 2.5.4.
The internal communication interface between the safety module and the basic unit is used for the
following tasks:
– setting up the outward communication connection between the safety module and the PC for para­
meterisation and diagnostics.
– additional active manipulations by the safety module in the control system of the motor controller.
– exchange of status messages and operating statuses.
– providing debug information for troubleshooting / analysis.
– bi-directional transmission of secure data telegrams to external safety controllers (in preparation).
d) Interface for parameterisation:
The safety module is parameterised using the SafetyTool (è Sections 2.2.7 and 4.5).
The SafetyTool is opened via the Festo Configuration Tool (FCT). Secure communication between the
SafetyTool and the safety module is optionally ensured via one of the interfaces of the motor con­
troller (Ethernet [X18] or USB [X19]=. The motor controller forwards the telegrams from and to the
safety module without changing them.
e) Active limitation of the rotational speed / speed in the basic unit:
34 Festo – GDCP-CAMC-G-S3-EN – 1406NH – English