Technical specificationsABB Control - AC 31 Page 3-371SBC 260400 R1001-b 06.997.4.3. External dual connector: 07 ST 51This is a dual connector which enables an easy connection of analog sensors to the 40 and50 series products (XM 06 B5 or XE 08 B5), some other functions are also added with thisconnector:- Possibility to change a sensor without fall-out the other sensors- Additionnal protection against short-circuit in case of 4- 20 mAThe switches on the 07 ST 51 are used to select the configuration of channels, one switch forone channel. Two possibilities of configuration, current protection or cabling PT100/PT1000.- Position A : Configuration current protection for 4 – 20 mA- Position B : Configuration for PT100 / PT1000It includes two connectors, J1 connector is used to cabling the different input sensors, and J2connector may be used to connect the shielding of the different analog cables.Warning: In the configuration current 4 – 20 mA, the sensor should be able to provide 20 mAwith min 10 V d.c. Moreover, the input is not protected against voltage between 10 up to 18 Vd.c. and can give an error or destroy the input.J1-1 J1-2SASBJ1-3 J1-4SASBJ1-5 J1-6SASBJ1-7 J1-8SASBJ2-1 J2-2 J2-3 J2-4 J2-5Electrical diagram inside of 07 ST51Switches for selectionchannels 0 and 1 or 6 and 7Switches for selectionchannels 2 and 3 or 4 and 5J2 Connector forshield ofdifferent sensorsJ1 Connector forcabling of differentinput sensors
