2. Installation2.4 Connection terminals2.4.3.1 Connect digital counter inputsOnly possible on base devices.Base devices with DC and UC voltage come with special counting and measuring func-tions on inputs I1 to I4.These functions are connected directly to function blocks.The following applies to EASY-E4-UC-...:The voltage supplied to the EASY-E4-UC-... must be a DCvoltage, since only DC signals will be processed.You can process the following:l 4 individual high-speed counter signals (one single counting direction), I1, I2, I3, I4l 2 incremental counters, I1, I2 and I3, I4l Frequencies I1, I2, I3, I4Figure 15: Connect digital counter inputsInput cable lengthStrong interference on long cables can result in inputs reachingtheir switching level. Please do not exceed the maximum cablelengths specified in the technical data for the connectedsensors.easyE4 11/18 MN050009 EN www.eaton.com 51
