Festo CMMP-AS M0 Series, Руководство пользователя

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12 Festo — CMMP-AS-...-M0 — 2022-07c
Description of the safety function STO
NOTICE
There is a danger that the drive will advance if there are multiple errors in the CMMP-AS-…-M0.
If the power stage of the motor controller fails during the STO state (simultaneous short circuit of 2
power semiconductors in different phases), this can result in a limited detent movement of the rotor.
The rotation angle/travel corresponds to one pole pitch. Examples:
• rotary axis, synchronous machine, 8-pole
è
movement
<
45° at the motor shaft.
• linear motor, pole pitch 20 mm
è
movement
<
20 mm at the moving part.
3.2.2 Overview of interface [X40]
The front of the motor controller has an 8-pin connection [X40] for control inputs, feedback contact
and a 24 V auxiliary supply for external sensors
è
4.2 Electrical installation.
The STO safety function is requested exclusively via the two digital control inputs STO-A and STO-B.
Safety circuitry for additional interfaces on the CMMD-AS-...-M0 motor controller is neither required
nor intended.
Cross-circuit detection in the input circuit is not carried out by the motor controller.
The status of the motor controller is sent to an external safety relay unit via a potential-free feedback
contact (N/O contact). This means that a downward compatible interface can be implemented in a
mixed configuration consisting of CMMP-AS (previous series with the “safe stop” function via the [X3]
connection) and the CMMP-AS-…-M0
è 7.3 Replacement of the previous CMMP-AS series with the
CMMP-AS-…-M0.
The interface [X40] allows direct connection of active and passive sensors, because a 24 V supply
voltage (auxiliary supply) with associated reference potential is connected.
Ports Description
STO-A
0V-A (Pin 1)
(Pin 2) Control input A for the STO function with the associated reference potential
–
"Safe Torque Off" (STO) request at low (logic 0), together with STO_B.
Control input 24 V, high active, based on EN 61131-2, signal level deviating from
è Tab. 19 Technical data: electrical data of the STO-A and STO-B inputs.
STO-B
0V-B (Pin 3)
(Pin 4) Control input B for the STO function with the associated reference potential.
–
"Safe Torque Off" (STO) request at low (logic 0), together with STO_A.
Control input 24 V, high active, based on EN 61131-2, signal level deviating from
è Tab. 19 Technical data: electrical data of the STO-A and STO-B inputs.
C1
C2 (Pin 5)
(Pin 6) Feedback contact for the "Safe Torque Off" status (STO), e.g. to an external con-
troller.
–
Feedback contact open: "Safe Torque Off" (STO) not active
–
Feedback contact closed: "Safe Torque Off" (STO) active
24V
0V (Pin 7)
(Pin 8) Auxiliary power supply, e.g. for safety-oriented peripherals (24 V DC logic power
supply of the motor controller).
Tab. 4: Function of the connections [X40]