EP1258-0001 Beckhoff
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The Beckhoff EP1258-0001 is part of the EP Digital Input Modules series and features eight digital inputs with M8 connectors, supporting a nominal input voltage of 24 VDC. The module offers distributed clocks, 2 EtherCAT ports, and sensor supply at 0.5 A, with input filtering set at 10 microseconds. It supports timestamp inputs with 10 ns precision and 1 ns resolution, and provides an isolation voltage of 500 V.
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Product Description:
The EP1258-0001 is a digital input device produced by Beckhoff and assigned to the EP Digital Input Modules series. It collects on-machine switch or sensor signals and transfers them to an EtherCAT network, reducing panel wiring. Mounted directly on equipment, the block supports IP67 protection and retains deterministic behavior through the Distributed Clocks function used in time-critical automation tasks.
The input side is organized as 8 digital channels terminated on eight M8, three-pin sockets, and each channel draws only 3 mA of current from the field sensor, which lowers load on proximity switches. An internal debounce stage inserts a 10 µs filter so fast transients are still captured but contact chatter is suppressed. Galvanic separation up to 500 V exists between process signals and the logic domain, enabling reliable operation next to inductive loads. When sensors are distributed along conveyor runs, cable segments may extend to 30 m without violating the specified signal quality. Two shielded, four-pin M8 ports forward the EtherCAT telegrams, providing line topology and convenient daisy-chain installation.
The logic supply Up is rated at 24 VDC, and the input circuit’s nominal reference matches the same value for compatibility with standard control trunks. For powering external sensors, the module sources 24 VDC at 0.5 A, so three-wire devices can be driven without an auxiliary block. The cumulative current drawn from the 24 VDC Us rail must stay below 4 A, a figure that includes sensor load and the module’s own electronics. High-resolution event capture is supported on two dedicated timestamp channels; a hardware counter latches edge positions with 10 ns accuracy and reports them to the PLC with 1 ns granularity. This timing capability allows motion controllers to align input events precisely across an EtherCAT segment, while A-coded connectors prevent wiring mistakes during maintenance.
Frequently Asked Questions about EP1258-0001:
Q: How many digital input channels are available on the EP1258-0001 module?
A: The EP1258-0001 features eight digital input channels for signal acquisition.
Q: What is the input filter time for each channel on the EP1258-0001?
A: The EP1258-0001 provides input filtering with a response time of 10 µs per channel.
Q: What is the nominal input voltage supported by EP1258-0001 digital inputs?
A: Each digital input on the EP1258-0001 can accept a nominal input voltage of 24 VDC.
Q: What is the timestamp precision of the EP1258-0001 digital input module?
A: This module supports timestamping with a precision of 10 ns plus input delay for high-resolution event capture.
Q: What is the maximum cable length supported by the EP1258-0001 for input signals?
A: The EP1258-0001 allows a maximum cable length of 30 meters for input connections.
