Attention:The procedures and working activities described in thisdocument are intended to be performed by technicalprofessionals only.2.2 Pin assignment UDL500Pin Name Function1 – not connected2 GND ground3 +10 ... 30V/DC voltage supply +10 ... 30V/DC4 OUTGND external ground for digital output5 OUT digital output voltage, max. +48V/DC, I<300mA6 OUTVCC external voltage supply for digital output, max. +48V/DC,I<300mA7 – not connected8 – not connected9 RS 485-A RS485 interface, data line A10 RS 485-B RS485 interface, data line B11 IN - external ground for trigger input12 IN + external voltage supply for trigger input, max. +36V/DCTable 1: pin assingment UDL5002.3 UDL500: RS485 interfaceInstallation note: We recommend professional grounding of the device (see 2.1Installation note).6 deister electronic GmbH 30890 Barsinghausen Germany V17/01/08Wiring & Installation Instructions UDL500UDL500 housing