1 5 Digital input EL1008, EL1018 Digital input | 24 V DC, positive switching EtherCAT Terminal 106 The digital inputs of a 24 V supply are among the most used signals. The EN 61131-2 standard describes the input characteristic and distinguishes three types. Type 1 has a small input current with low power dissipation. This input is optimised for mechanical switches and activelyswitched electronic outputs. Type 2 has a significantly larger input current and is optimised for 2-wire sensors with a high quiescent current consumption. In switched-on state the current consumption of this input is high. The related power dissipation is generally not acceptable. Type 3 is a combination between type 1, with low current in switched-on state, and a satisfactorily high quiescent current for the majority of modern 2-wire sensors. The type 3 input can be used in almost all applications as a replacement for type 1. The diagram shows the typical current/voltage curves of the EtherCAT Terminal inputs and the allowable range of conformity in accordance with the standard. The input circuits differ in their filtering functions. The filtering has the task of suppressing electromagnetic interference. However, this does have the drawback of signal deceleration. The filter time of 3 ms is comparatively slow, but it can suppress the bouncing of a mechanical switch and delivers a stable signal for simple PLC applications. Filter times of 10 µs are suitable for applications with shortest possible reaction times and should be used for mechanical switches only in a restricted manner. XFC terminals with a filter time of
1 5 EL10xx, EL18xx Digital input 16-channel digital input terminal, 1-wire, 24 V DC, type 1/3 8-channel digital input + 8-channel digital output, 1-wire, 24 V DC, type 1/3 8-channel digital input terminal, 2-wire, 24 V DC, type 1/3 4-channel digital input terminal, 2-wire, 24 V DC, type 1/3 EL1809 EL1819 EL1859 EL1808 EL1004 | ES1004 EL1014 | ES1014 2-wire EtherCAT Terminal 107 typ. 3.0 ms typ. 10 µs typ. 3.0 ms typ. 3.0 ms typ. 3.0 ms typ. 10 µs 16 8 inputs + 8 outputs 8 4 +60 °C -25 °C +60 °C -25 °C +60 °C -25 °C 1 9 1 9 1 9 2 10 2 10 2 10 3 11 3 11 3 11 2 6 4 12 4 12 4 12 5 13 5 13 5 13 3 7 6 14 6 14 6 14 7 15 7 15 7 15 4 8 8 16 8 16 8 16 With 16 input channels and only 12 mm width the EL1809 and EL1819 digital input terminals are suitable for space-saving control cabinet installation. Reference ground for all terminal points is the 0 V power contact. Single wires can be connected directly without tools. A screwdriver is required for disconnection. The digital EL1859 EtherCAT Terminal combines eight digital inputs and eight digital outputs in one device. The EL1808 digital input terminal acquires the binary control signals from the process level and transmits them, in an electrically isolated form, to the higher-level automation device. With its 3 ms input filter it is suitable for identifying slow edges or bouncing signals, for which multiple detection is undesirable. With its 3 ms input filter the EL1004 is suitable for identifying slow edges or bouncing signals, for which multiple detection is undesirable. The EL1014 is suitable for identifying fast signal edges in the μs range. There is no electrical isolation between the channels. 24 V DC (-15 %/+20 %) 24 V DC (-15 %/+20 %) 24 V DC (-15 %/+20 %) 24 V DC (-15 %/+20 %) typ. 4 mA + load typ. 15 mA + load typ. 2 mA + load typ. 2 mA + load typ. 100 mA typ. 130 mA typ. 100 mA typ. 90 mA – – – – standard input terminal with high number of channels for slow or combi EtherCAT Terminal, 8 x output 24 V DC, max. output current 0.5 A, direct plug-in technique, 2-wire connection standard input terminals for 2-wire connection fast 24 V DC edges, direct plug-in technique load type: ohmic, inductive, lamp load, reverse voltage protection -25…+60 °C 0…+55 °C -25…+60 °C -25…+60 °C CE, UL, Ex CE, UL, Ex CE, UL, Ex CE, UL, Ex approx. 65 g approx. 65 g approx. 60 g approx. 50 g www.beckhoff.com/EL1809 www.beckhoff.com/EL1859 www.beckhoff.com/EL1808 www.beckhoff.com/EL1004 EL1004-0020 2500 V functional isolation We reserve the right to make technical changes.