CMGA
Festo AG & Co. KG
Postfach
D-73726 Esslingen
+49/711/347-0
www.festo.com
(en) Operating manual for CMGA modules
761727
1201NH
Version Status: TD-37350-810-02-01F-EN
Original: de
Safety system CMGA
English
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1
Important advice
Target audience of this operating manual:
maintainance, replacement, electricians, users
Definitions
The synonym CMGA is used as generic term for all derivates of the CMGA product
line.
If the manual points directly to a certain derivate, though the entire term will be
used.
The following term „safe“ is used for safe function according to the
EN ISO 13849-1 respectively according to EN 61508 in the particular category or
level.
2
Safety Advice
Operating and Service
– Before installation and demounting, or the disconnecting of signal- and power
supply cables, the modules has to be de-energized.
– It has to be avoided to get electrostatics at the terminal blocks and connectors
during the dismounting of the CMGA modules.
– Guarantee and safety approval is void, if the modules has been manipulated.
– The CMGA can only be operated in a temperature range between 0° and 50° C.
Make sure that this temperature range will not exceeded.
2.1 Checking the Certification Code (CRC)
Before the normal operation of CMGA at a machine or plant a safety audit has to
be proceeded. As result a test report has to be existent.
This report contains a certification code. This code assures that a CMGA will be
operated with the correct program.
By pressing the key “Function” in the normal operation mode „RUN“ (see under-
neath), the certification code is shown in the 7 – segment display. Compare these
displayed numbers (i.e. C 56124) with the numbers of the test report of this partic-
ular machine or plant, that they are matching. If these numbers are different, the
normal safe operation is not assured. In this case you have to stop the machine or
plant at once and contact the company, who installed this machine.
1
LED's show operating mode
2
Function key for reset and
CRC (test report code)
3
7 segment display
4
Programming interface
5
Terminal blocks for input /
output signals
1
2
3
4
5
2.2 Modification of an installation
The commissioning or changing of an installation of CMGA can only achieved by
qualified personal! Contact the company, who did the safety related test report. By
changing the configuration the safety function of the module can be lost.
2.3 Start up sequences
After a start up is initiated, the particular start up phases are shown in the display.
If no errors are occurring, the following phases will be passed.
7 segment
display
Mode
Description
„1“
STARTUP
Synchronization, check of configuration- /firmware data
„2“
SENDCONFIG Synchronization, check of configuration- /firmware data zone check
„3“
STARTUP BUS Activate bus system
„4“
RUN
Normal operating status
„5“
STOP
Only for authorized personal available
„A“
ALARM
Alarm can be reset by pressing the „Function“ key
„F“
FAILURE
Failure can be reset by switching the CMGA (power supply) OFF and
ON
LED display
Colour
Mode
Description
green
„blinking“
System OK
yellow
„blinking“
Get in touch with authorized personal
red
„blinking“
Alarm
red
„continuous“ Fatal Error – CMGA power supply must be disconnected
Notice:
Only the operating status 4 = RUN allows after a correct installation of the CMGA
to operate the machine or plant. All configured safety functions are active. If the
CMGA is in the mode “alarm” = A or in the mode “failure” = F all safety related
outputs are deactivated.
2.4 Modification / procedures with changes at the modules or installation
Repair
Repair of a module could only be achieved in the factory
Guarantee
By changing the CMGA layout or opening the enclosure the guarantee and safety
approval is lost
Mechanical modification
Through modification of drives / mechanical transmission or changing the sensors
(encoders) the safety function could be lost. Talk to the company who has installed
or delivered the CMGA modules, or to the person who has created the safety test
report.
Electrical modification
Through modification the cabling or wiring of the CMGA modules the safety func-
tion could be lost. Talk to the company who has installed or delivered the CMGA
modules, or to the person who has created the safety test report.
3
Maintenance
Exchange of a CMGA module
After a CMGA module has been changed it has to be assured, that the spare mod-
ule contains the same configuration. The test report code (check sum / CRC) can
be shown in the 7 segment display. It has to be sure, that the these numbers are
the same in the test report.
Follow the instructions by changing a CMGA module
1. disconnect the drive from the power supply
2. switch of the power supply of the CMGA and disconnect ale cables and connec-
tions
3. loosen the connectors of the sensors and pull off
4. disconnect all further connections
5. get the CMGA from the (DIN) rail and pack the CMGA according to EMC prescrip-
tions
6. install the new CMGA at the (DIN) rail
7. rebuild all connections
8. switch on the drive
9. switch on the power supply
Note
Basically no pluggable connection of the CMGA can be disconnected or connected
during the voltage is on. Especially the connected speed and position sensors
(encoders) could be destroyed.
4
Failure modes of the CMGA
In principle the CMGA got two different failures according to the following rela-
tions:
Failure
mode
Description
Result for
the system
Reset
condition
Fatal
Error
Fatal exceptional error in the internal program
of the CMGA
A cyclic program flow is not more possible. The
last active process is to operate the segment
display by system A. System B has stopped.
All outputs will
be disconnec-
ted - shut
down!
Only resettable
by switching off
the power sup-
ply of the CMGA
(POR).
Alarm
Functional failure, caused by an internal pro-
cess. Both systems will still run in the cyclic pro-
cess and handle all requirements of the commu-
nication interfaces.
All outputs will
be disconnec-
ted - shut
down!
Reset by the
pre – defined
reset input
If an alarm or fatal error occurs more often, then contact the company who has
installed the machine or plant.
