EUCHNER CES-I-AR-M-C04 (Multicode) - Manual (Page 18)

Operating Instructions Safety Switch CES-I-AR-M-C04
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 pulsed power supply must not be used for UB. Tap the supply voltage direct-
ly 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 FI1A and FI1B directly to a power supply unit or to
outputs FO1A and FO1B of another EUCHNER AR device (series connection).
Pulsed signals must not be present at inputs FI1A and FI1B.
Ì Outputs FO1A and FO1B can be connected to the safe inputs of a control sys-
tem. Prerequisite: The input must be suitable for pulsed safety signals (OSSD
signals, e.g. from light curtains). The control system must tolerate clock puls-
es 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 “Typi-
cal system times” on page 23.
A detailed example of connecting 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.