olympia electronics BS-316 Installation & Operation Manual

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olympia electronics BS-316 Installation & Operation Manual Manual pdf 8 page image

Page 8 from 22 921316000_09_016Sensor connectivityBefore connecting any sensor to the panel, the main power supply must be disconnected. There are two ways ofconnect the sensors depending on the number of contacts.Α) Sensor with 2 contacts 4÷20mAThe connection of sensors with 2 contacts 4÷20mA must be between «+» and «-» of the sensor connector, thatcorrespond to «+» and “S” of the panel as shown in figure 4.The cross-section of the cable depends on the length (see next table). On all sensors with 2 contacts you mustconnect a coaxial cable. The shielding of the cable must be connected to the «-» of sensor.Sensors with two contactsRanges Cable typeFrom 0 to 100 meters 2 x 0,5 mm² shieldedFrom 100 to 200 meters 2 x 1 mm² shieldedFrοm 200 to 500 meters 2 x 1,5 mm² shieldedFrοm 500 to 1000 meters 2 x 2,5 mm² shieldedΒ) Sensors with 3 contacts 4÷20mA+-SFigure 4: Connection diagram with two contact sensorsFigure 3: Powercable