Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Counter channels | 1 |
| Encoder input frequency, max. | 200 kHz |
| Counting frequency, max. | 800 kHz; with quadruple evaluation |
| Digital inputs | 3; parameterizable |
| Digital outputs | 2 transistor outputs; parameterizable |
| Supply voltage | 24 V DC |
| Load voltage L+ range | 19.2 V to 28.8 V DC |
| Usable BaseUnit | BU type A0 |
Applications
- Encoder counting: Counts signals from 24 V incremental or pulse encoders, including A/B tracks with 90° phase offset and pulse encoders with direction.
- Position detection: Supports incremental acquisition, frequency measurement, cycle duration measurement, and velocity measurement.
- Event-controlled counting: Supports hardware and software gates, synchronization via digital input, continuous counting, and event-controlled stop.
Key Features
- Counter and encoder input: 1 channel supports 24 V incremental encoders or pulse encoders, with input frequency up to 200 kHz and counting frequency up to 800 kHz with quadruple evaluation.
- Digital I/O: The module has 3 parameterizable digital inputs and 2 parameterizable transistor outputs. Output current is 0.5 A rated per digital output and 1 A maximum per module.
- 24 V supply: Rated supply voltage is 24 V DC. Load voltage L+ is 24 V DC with a permissible range from 19.2 V to 28.8 V and reverse polarity protection.
- Counting and measurement: It provides 1 counter, continuous counting, parameterizable counting range, 2 comparators, frequency measurement from 0.04 Hz to 800 kHz, and cycle duration measurement from 1.25 μs to 25 s.
- Diagnostics and isolation: Diagnostics include supply-voltage monitoring, wire-break, short-circuit, A/B transition error, group error, diagnostic alarm, and hardware interrupt. Isolation between channels and the backplane bus is tested with 707 V DC (type test).
- BaseUnit and engineering: The module is usable with BU type A0 and has a type B mechanical coding element. It is configurable/integrated with STEP 7 TIA Portal from STEP 7 V15 SP1 or higher and with STEP 7 V5.6 and higher.
Frequently Asked Questions
1. How many counter channels does 6ES7138-6AA01-0BA0 have?
It has 1 counter channel and 1 integrated counter.
2. Which encoder signals does the module support?
It supports 24 V incremental encoders with A/B tracks and 90° phase offset, with or without a zero track, plus pulse encoders, pulse encoders with direction, and pulse encoders with one impulse signal per count direction.
3. What are the module's counting limits?
Input frequency is up to 200 kHz. Counting frequency is up to 800 kHz with quadruple evaluation.
4. What diagnostics are available?
It supports supply-voltage monitoring, wire-break, short-circuit, A/B transition error at the incremental encoder, group error, diagnostic alarm, and hardware interrupt.
5. Which BaseUnit is usable with this module?
The module is usable with BU type A0.
