Festo CAMC-G-S1, Translation Of The Original Instructions

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2 Product description for safety module CAMC-G-S1
16 Festo – GDCP-CAMC-G-S1-EN – 1412b – English
Connections Description
STO-A (Pin 1)
0V-A (Pin 2)
Control port A for the STO function with corresponding reference potential.
1)
– Request for “Safe Torque Off ” (STO) at Low (0 signal), together with STO_B.
STO-B (Pin 3)
0V-B (Pin 4)
Control port B for the STO function with corresponding reference potential.
1)
– Request for “Safe Torque Off ” (STO) at Low (0 signal), together with STO_A.
C1 (Pin 5)
C2 (Pin 6)
Feedback contact for the “Safe Torque Off ” (STO) status, e.g. to an external
controller.
– Feedback contact opened: “Safe Torque Off ” (STO) not active
– Feedback contact closed: “Safe Torque Off ” (STO) active
24V (Pin 7)
0V (Pin 8)
Auxiliary supply, e.g. for safety peripherals (24 V DC logic supply of the motor
controller).
1) Control inputs 24 V, high active, based on EN 61131-2, deviating signal level
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Appendix A, Tab. A.8
Tab. 2.3 Function of the module [X40] connections
The connections are electrically isolated from each other in groups and from the 24 V supply to the
motor controller
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Appendix A.1.4, Tab. A.11.
2.2.3 Control ports STO-A, 0V-A / STO-B, 0V-B [X40]
The safety function STO (Safe Torque Off ) is requested via the two control ports STO-A and STO-B. They
permit the direct connection of safe semiconductor outputs (electronic safety switching devices, active
safety sensors, e.g. light curtains with OSSD signals) and of switch contacts (safety switching device
with relay outputs, passive safety sensors, e.g. forcibly-guided position switches)
è
e.g. Section 3.2.2,
Fig. 3.2.
To request the safety function STO (safe torque off ), the 24 V control voltage at both control ports STO-
A and STO-B is switched off (0 V).
If the two control ports are switched off simultaneously or within a defined discrepancy time, the STO
safety function is active.
For control ports STO-A and STO-B, an undervoltage monitoring mechanism is integrated to eliminate
the possibility of invalid voltage ranges for the downstream electronics, as well as an overvoltage mon­
itoring mechanism to protect against overvoltage.
Tab. A.8 Appendix A.1.4 describes the technical data for the control ports within the
specified operating range of the logic voltages.
Tolerance ranges are defined for the input voltage range of control ports STO-A and STO-B. The amount
of energy stored in the safety module components (e.g. capacitors) depends on the input voltage level.
During switching operations, these energies must be charged or discharged. Consequently, switch-off
time values for the transition to the safe state (STO) and the tolerance time vis-a-vis OSSD signals
(buffer time) depend on the input level.
The time response requirements are contained in the technical specifications in the Appendix A.1.4.
The time response itself is described in Section 2.4.