Solenoid Driver Zone 2 Div. 2 Zone 0, 1, 2 Div. 1, 2 KFD2-SL2-Ex2 2- 3- 1+ 5- 6- 4+ 24 V DC 14+ 15- Power Rail ERR 24 V DC I II 7 8 (+/-) 9 I II V Connection Assembly • 2-channel isolated barrier • 24 V DC supply (Power Rail) • Output 45 mA at 11.7 V DC • Logic input, non-polarized • Lead monitoring • Up to SIL2 acc. to IEC 61508 Function This isolated barrier is used for intrinsic safety applications. It supplies power to solenoids, LEDs, and audible alarms, located in a hazardous area. It is controlled via a logic signal. The input has two defined states: 1-Signal = 16 V DC ... 30 V DC, 0- Signal = 0 V DC ... 5 V DC. The current consumption of the input is about 3 mA. At full load, 11.7 V at 45 mA is available for the hazardous area application. If the field impedance is > 10 kΩ for lead breakage or < 50 Ω for short circuits a line fault is detected. A fault is signalized by LEDs acc. to NAMUR NE44 and a separate collective error message output. 2 Features
