Safety Instructions - Festo CMMP-AS M0 Serie Mode D'emploi

2.4 Range of application and certifications
The motor controller with integrated safety function is a safety-related part of
control systems. The motor controller carries the CE mark. Standards and test
values, which the product complies with and fulfils, can be found in the "Technical
data" section (è appendix 12). The product-relevant EU directives can be found in
the declaration of conformity.
è Certificates and declarations of conformity for this product can be found at
www.festo.com.
3 Product overview
The motor controller CMMP-AS-...-M0 has a digital I/O-interface [X40] for control of
the STO safety function.
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1
Motor controller CMMP-AS-...-M0
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Digital I/O interface [X40] for con­
trol of the STO function
Fig. 1 Motor controller CMMP-AS-...-M0
4 Function and application
The motor controller CMMP-AS-...-M0 has the following safety-related perform­
ance characteristic.
– "Safe Torque Off " (STO) function,
– Potential-free acknowledgment contact,
4.1 Description of the safety function
The power supply to the drive is reliably disconnected via the active safety function
STO "Safe Torque Off ". The drive cannot generate torque or force and so cannot
perform any hazardous movements. There is no monitoring of the standstill posi­
tion.
The machine must be stopped in a safety-oriented manner, e.g.via a safety switch­
ing device.
Note
There is a risk that the drive will advance if there are multiple errors in the
CMMP-AS-...-M0.
Failure of the motor controller output phase during STO status (simultaneous
short circuit of 2 power semiconductors in different phases) may result in a lim­
ited detent movement of the rotor. The rotation angle / path corresponds to a
pole pitch. Examples:
– Rotary axis, synchronous machine, 8-pin è movement  45° at the motor
shaft.
– Linear motor, pole pitch 20 mm è movement  20 mm at the moving part.
4.2 Control ports STO-A, 0V-A / STO-B, 0V-B [X40]
The safety function STO is requested solely through switching off of the control
voltage (0 V) at the two digital control ports STO-A and STO-B. Safety-oriented
circuitry for additional interfaces at the CMMP-AS...-M0 is not required or inten­
ded.
Cross-circuit detection in the input circuit is not carried out.
According to the specification of the safety function, both levels must be identical
at STO-A/B. If both channels are not actuated simultaneously, the STO is still act­
ive at the first request.
The finite state machine in the motor controller internally monitors the driver sup­
ply voltage after the control ports have been activated. The level change for both
ports must occur within the discrepancy time (established: 100 ms). If a channel is
not switched off, this is interpreted as an error and results in an error message.
Always switch STO-A and STO-B simultaneously.
Test impulses of safety controls are tolerated within a certain range è section 12,
technical data – electrical data.
0 V
24 V
C2
C1
0V-B
STO-B
0V-A
STO-A
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Pin 1 of the interface [X40]
4.3 Feedback contact C1, C2 [X40]
The status of the motor controller is reported back to an external safety switching
device through a potential-free acknowledgment contact (normally open).
The feedback contact has a single channel and may only be used for monitoring.
5 Mounting / dismantling
The safety switch is integrated into the motor controller CMMP-AS-...-M0 and can­
not be dismantled.
6 Electrical installation

6.1 Safety instructions

The requirements of EN 60204-1 must be fulfilled during installation.
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Warning
Danger of electric shock from voltage sources without protective
measures.
• Use only PELV (protective extra-low voltage) circuits in accordance with
EN 60204-1.
Also take into account the general requirements for PELV circuits in accord­
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ance with EN 60204-1.
• Use only power sources which guarantee reliable electrical isolation of the
operating voltage in accordance with EN 60204-1.
Through the use of PELV circuits, protection from electric shock (protection from
direct and indirect contact) in accordance with EN 60204-1 is ensured (Electrical
equipment of machines, general requirements). A 24 V power supply unit used in
the system must satisfy the requirements of EN 60204-1 for DC power supply (be­
haviour during power interruptions, etc.).
Make sure that no jumpers or the like can be inserted parallel to the safety wiring,
such as through the use of the maximum wire cross section of 1.5 mm or appropri­
ate wire end sleeves with insulating collars. Use twin wire end sleeves for looping
through lines between neighbouring equipment.
ESD protection
At unassigned plug connectors, there is the danger that damage may occur to the
device or to other system parts as a result of ESD (electrostatic discharge). Earth
the system parts before installation and use appropriate ESD equipment
(e.g. shoes, earthing straps, etc.).
6.2 Connection [X40]
The motor controller CMMP-AS-...-M0 has, for the integrated safety function, a
combined interface for control and acknowledgment through the plug connector
[X40].
Plug Pin Designation
8 0 V
7 24 V
6 C2
5 C1
4 0V-B
3 STO-B
2 0V-A
1 STO-A
Fig. 2 Pin allocation [X40] (representation of the plug connector on the device)
To ensure the STO "Safe Torque Off " functions correctly, the control ports STO-A
and STO-B are to be connected in two channels with parallel wiring.
This interface can be part of an emergency stop circuit or a protective door ar­
rangement, for example.
Value Description
0 V Reference potential for auxiliary power supply.
DC +24 V Auxiliary power supply (DC 24 V logic supply of
the motor controller carried out).
– Feedback contact for the status "STO" on an
external controller.
0 V Reference potential for STO-B.
0 V / 24 V Control port B for the function STO.
0 V Reference potential for STO-A.
0 V / 24 V Control port A for the function STO.