el3112 | 2-channel analog input terminals 0…20ma, differential input, 16bit
the el3112 analog input terminal processes signals in the range between 0and 20ma. the current is digitised to a resolution of 16bits and is transmitted, electrically isolated, to the higher-level automation device. the input channels of the ethercat terminal have differential inputs and possess a common, internal ground potential. the el3112 combines two channels in one housing. overload condition is detected, and the terminal status is relayed to the controller via the e-bus. the ethercat terminal indicates its signal state by means of light emitting diodes. the error leds indicate an overload condition.
technical datael3112| es3112
number of inputs 2 (differential)
power supply via the e-bus
technology differential input
signal current 0…20 ma
oversampling factor –
distributed clocks yes
distributed clock precision << 1 µs
internal resistance 85 ω typ. + diode voltage
input filter limit frequency 5 khz
common-mode voltage ucm 10 v max.
conversion time ~ 50 µs (fast mode ~ 35 µs)
input signal bandwidth see input filter
resolution 16 bit (incl. sign)
measuring error < ±0.3 % (relative to full scale value)
surge voltage resistance 35 v dc
electrical isolation 500 v (e-bus/signal voltage)
current consumption power contacts –
current consumption e-bus typ. 170 ma
bit width in the process image inputs: 8 byte
special features standard and compact process image, activatable fir/iir filters, limit value monitoring
weight approx. 55 g
operating/storage temperature -25…+60 °c/-40…+85 °c
relative humidity 95 %, no condensation
vibration/shock resistance conforms to en 60068-2-6/en 60068-2-27
emc immunity/emission conforms to en 61000-6-2/en 61000-6-4
protect. class/installation pos. ip 20/variable