LSUW NSR3-1 K - Fiessler Elektronik - #1

General Information

The Switching unit LSUW NSR 3-1K may be operated with 230 V AC or 115 V AC with a 230 V AC-transmitter or with 24 V DC with a 24 V DC transmitter.

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LSUW Connection diagram transmitter 24 VDC

1 V DC Kl. 12

EU2K 511/2 231V

i : PE Pin 1 : L1 Pin 2 : N Pin 3 : +24V DC Pin 4 : Minus

Pin 5 : A1

Pin 6 : A2

1 2

13 12

15

14

The working-current supply that initiates the hazardous movement is connected by way of terminals 16-17 and

20-21.

Switching function: two normally-open, floating, monitored forced-opening contacts.

The output contacts are floating contacts whose charge must not exceed 2A/250 V AC or 60 V DC , 30 W.

In the event of an inductive charge, a spark-quenching element (e.g. 0.22|iF, 220 Q) must be connected parallel

to the charge (not to the contacts).

No external potential must be applied to the terminals 4, 5, 6, 7, 8, 9, 10, 11, D, and 22. To increase the reliability of switching, double contacts should be used for interruption of the hazardous move­ment.

The hazardous movement of the working machine must only be switched by way of the working-current path, terminals 16 - 17 and 20 - 21.

The output 18 - 19 serves as a monitoring path. It must not be used as a contact to initiate the hazardous press-closing movement

When any electrical welding work is to be done on the machine, the switching unit should be disconnected and the plug connecting the light receiver be withdrawn as, otherwise, stray welding current could destroy the electronic components contained in these devices.

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Doku Nr. 538 Stand 14.13.11/EW