Festo CAMC-G-S1, Translation Of The Original Instructions, Page: 43 / 50

6 Conversion and module replacement
Festo – GDCP-CAMC-G-S1-EN – 1412b – English 43
CMMP-AS-…-M3
Devices of the CMMP-AS-M3 series feature, in combination with the CAMC-G-S1, the safety function
STO Safe Torque Off in accordance with EN 61800-5-2 SIL3, and/or EN ISO 13849-1, Cat. 4 / PL e.
The two switch-off paths are realised via the control ports STO-A [X40.1] and STO-B [X40.3].
The potential-free acknowledgement contact ( [X40] Pins 5 and 6) is also present.
Modifications to the connection wiring
Converting an existing application with STO from CMMP-AS to CMMP-AS-M3 requires the following
modifications to be made to the connection wiring.
1. Switch-off path:
Retain output stage enable wiring [X1.21] and route in parallel to STO-A [X40.1].
Connect GNDA [X40.2] to 0 V [X40.8] to link the reference potential.
2. Switch-off path:
Now route driver supply wiring [X3.RELAY] to STO-B [X40.3].
Connect GNDB [X40.4] with 0 V [X40.8] to link the reference potential.
Feedback contact:
Relay connection for the feedback contacts [X3.5] and [X3.6] to [X40.5] and [X40.6].
Note
During operation, the feedback contacts on the CMMP-AS and the CMMP-AS-M3 shows
compatible behaviour.
When the logic supply (24 V) is switched off, they behave differently:
– CMMP-AS: Contact closed.
– CMMP-AS-…-M3: Contact open.
Information for configuration
The CMMP-AS-...-M3 exhibits a higher peak power than the CMMP-AS. Depending on the application,
higher positioning speeds can therefore be reached. Use of this feature represents an essential
modification to the machine.
Note
The parameter set of the CMMP­AS must be transferred with the same values to the
parameter block of the CMMP­AS­...-M3. If these values are increased, which in turn
poses a higher risk, a new risk assessment must be performed on the machine.
Note
Once the motor controller has been replaced, the safety function must be validated in
accordance with the machine manufacturer’s specifications.