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2110788-13-03/20 (Translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CET.-AR-…
EN
10.11. Information on operation on an AR evaluation unit
The following devices can be operated on an AR evaluation unit.
Device
Version number
CET1/2
from V1.1.2
CET3/4
from V1.0.0
Important!
Devices with start button and feedback loop are not suitable for operation on an AR evaluation unit.
Please refer to the operating instructions for the relevant AR evaluation unit for more information.
Devices without door monitoring output (CET1/2) each occupy one monitoring output on the AR evaluation unit (HIGH with
active guard locking).
Devices with door monitoring output (CET3/4) each occupy two monitoring outputs on the AR evaluation unit. The first
monitoring output signals the position of guard locking (HIGH when guard locking is active). The second monitoring output
signals the position of the guard (HIGH when the guard is closed).
10.12. Notes on operation with safe control systems
Please observe the following requirements for connection to safe control systems:
Ì
Use a common power supply for the control system and the connected safety switches.
Ì
A pulsed power supply must not be used for U
B
.
Ì
If safety outputs OA and OB are connected to safe control systems or external peripheral devices with ground discon-
nection, the device can enter the fault state. The problems can generally be corrected using the EUCHNER filter module
AC-FM-AR-127460 (order no. 127460).
Ì
If the power supply is connected to a terminal of a safe control system, this output must provide sufficient electrical
current.
Ì
The following applies to dual-channel control of the guard locking solenoid:
- CET 1/2-AR from version V1.5.0: The device tolerates switch-on and shut-off pulses up to 4 ms.
- CET 3/4-AR from version V1.5.2: The device tolerates shut-off pulses up to 5 ms.
- CET 3/4-AR from version V1.7.0: The device tolerates switch-on and shut-off pulses up to 5 ms.
Ì
Always connect inputs IA and IB directly to a power supply unit or to outputs OA and OB of another EUCHNER AR device
(series connection). Pulsed signals must not be present at inputs IA and IB.
Ì
The safety outputs (OA and OB) can be connected to the safe inputs of a control system. Prerequisite: The input must
be suitable for pulsed safety signals (OSSD signals, e.g. from light grids). The control system must tolerate test pulses
on the input signals. This normally can be set up by parameter assignment in the control system. Observe the notes of
the control system manufacturer. For the test-pulse duration of your safety switch, please refer to chapter
cal data for safety switch CET.‑AR‑… on page 42
.
Depending on the connection type, the following sub-chapters and the pin assignment must be observed. The pin assign-
ment of the individual connection types can be found in chapter
10.6. Connector assignment for safety switch CET‑AR with
plug connectors 2 x M12 on page 23
and in chapter
10.7. Connector assignment for safety switch CET‑AR with plug
connector M23 (RC18) on page 24.
A detailed example of connecting and setting the parameters of the control system is available for many devices at
www.euchner.com, in the area
Downloads
/
Applications
/
CET
. The features of the respective device are dealt with there in
greater detail.
10.12.1. Particularities for version with plug connectors 2xM12, wiring diagrams A and B, and plug connec-
tor M23 (RC18), wiring diagrams D and E
For dual-channel control of the solenoid voltage by safe outputs of a control system, the following points must be observed:
Ì
For devices with teach-in input J, the input must remain unconnected in normal operation.
Ì
Operation is not permissible for devices with feedback loop and start button.
Ì
Freely controllable LEDs are only allowed to be connected in parallel with the solenoid (i.e. the LED indicates whether the
solenoid is energized).