SPOORVRIJMELDING EN DOORRITREGISTRATIE ... - Infrabel

Aankoop van assentellersystemen voor grote assentellerzones bereden aan snelheden ≤ 40km/h - Technische VoorwaardenAnaloge interface• 2 analog inputs available.• Ground is not isolated from the main DC power of the CPU.I-I.313• 0-20 mA or 4-20 mA closed loops (With software conversion according to the type of input selected in the Tagdefinition).• 8 Bits Analog/Digital converter (256 steps or 0.4% resolution. 1% of precision).• Impedance per input: 291 ohms.• Guaranteed sampling frequency according to the cycle time of Ladder with a max. frequency of 25 Hz.• Type of measurement is ground-referenced and current to voltage converter.CablingPassive input with 2 wires sensor:2007-0715-57With this cabling you have to check the voltage needed by the sensor.Example:The power supply used for the sensor is 12 VDC. At 20 mA on the input resistor of 291 ohms, the voltage is 5.8volts. You still have 6.2 volts for the sensor. Check that it is sufficient. If not, use a Sensor that accepts a highervoltage (24 VDC).Passive input with 4 wires sensor:Eigendom van INFRABEL. Vertrouwelijke informatie, mag niet verspreid worden zonder de toestemming van de Dienst Seininrichting.SI(TVP&DREP,CAT.D,z) PRCM CTV 1.2 N.doc 29 / 31 18/10/2007