MTL5522 MTL5522 SoLenoID/aLarM DrIVer loop-powered, IIB The MTL5522 is a loop-powered module which enables a device located in the hazardous area to be controlled from the safe area. The MTL5522 can drive a certified intrinsically safe low-power load, as well as non-energy-storing simple apparatus such as an LED. The unit's input/output isolation allows the control switch to be connected into either side of the 24V dc supply circuit. SPECIFICATION See also common specification number of channels One Location of load Zone 0, IIB, T4–6 hazardous area if suitably certified Div. 1, Group C hazardous location Minimum output voltage equivalent output circuit 70 Output current (mA) Output voltage (V) 21.4 9.9 21.4V minimum 158Ω maximum Current limit: 70mA Input voltage 20 to 35V dc Hazardous-area output Minimum output voltage: 9.9V at 70mA Maximum output voltage: 24V from 158Ω Current limit: 70mA output ripple < 0.5% of maximum output, peak to peak response time Output within 10% of final value within 100ms