Festo CAMC-G-S3 Manual page 115

2 Product description of safety module CAMC-G-S3
Basic unit error:
During operation, the basic unit monitors the communication with the safety module and the plausibil­
ity of the control signals from the safety module. After switch-on, the basic unit checks whether a mod­
ule has been replaced and that the correct type of safety module has been mounted. If there are errors,
it generates a corresponding error message with parameterisable error response (è Description of
functions of CMMP-AS-...-M3, GDCP-CMMP-M3-FW-...).
Error of the safety module:
The safety module executes the required safety functions. It monitors itself, the inputs and outputs and
the position encoders 1 and 2. If a safety function is breached or an error is detected, the safety module
switches to fault state. For this reason, the safety module distinguishes between
– errors on violation of a safety condition (53-x and 54-x) – LED is permanently red
and
– system errors (55-x to 59-x) – LED flashes red (LED display è Section 2.10.2)
Errors are generated by the various function blocks in the safety module:
For example, the SSF safety function generates an error signal when the drive moves outside the mon­
itored speed range. The error may also be very short, if the drive only leaves the permitted range for a
brief interval.
For this reason, both the basic unit and the safety module have an internal diagnostic memory. Each
error occurring during operation is firstly entered in this diagnostic memory and then saved.
– The diagnostic memory of the basic unit can store more than 200 entries. When this limit is reached,
the oldest entries are overwritten.
– The diagnostic memory of the safety module comprises 32 entries.
It serves as an intermediate buffer before the errors are transferred to the basic unit and entered
there in its permanent diagnostic memory.
The permanent diagnostic memory of the basic unit remains intact, even if there is a
voltage failure, meaning that an error history is available. Besides errors, other events are
also entered in the permanent diagnostic memory. You can find a detailed description in
è Section 2.11.
In addition, the error number, consisting of the main index and the subindex, is displayed on the 7-seg­
ment display of the motor controller. The most recently triggered error of the highest priority (error
number) is displayed. Later errors with a lower priority are entered in the diagnostic memory, but are
not shown on the 7-segment display.
An error status remains intact until it is acknowledged.
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English 115