EUCHNER CES-AR-C01-AH-SA (Unicode) - Manual (Page 18)

Operating Instructions Safety Switch CES-AR-C01-AH-SA
18
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 clocked power supply must not be used for UB. Tap the supply voltage
directly from the power supply unit. If the supply voltage is connected to a
terminal of a safe control system, this output must provide sufficient electrical
current.
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). Clocked sig-
nals must not be present at inputs IA and IB.
Ì Outputs OA and OB can be connected to the safe inputs of a control system.
Prerequisite: The input must be suitable for clocked safety signals (OSSD sig-
nals, e.g. from light curtains). The control system must tolerate clock 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 pulse duration of your safety switch, please refer to the section Typical
system times on page 25.
A detailed example of connection and setting the parameters of the control system is
available for many devices at www.euchner.de, in the area Download ¨ Applications
¨ CES. The features of the respective device are dealt with there in greater detail.