Pulse acquisition
AAP149-S00 S1 collects sixteen pulse channels at up to 6 kHz. AAP849-S00 S1 collects eight channels at up to 12 kHz and updates their controller image faster.
YOKOGAWA · CENTUM ENGINEERING RECORD
Yokogawa AAP149-S00 S1 / AAP849-S00 S1 | Pulse Input and Pulse/Analog I/O Modules
CENTUMI/OMODULE
01
Model Profile
Yokogawa AAP149-S00 S1 and Yokogawa AAP849-S00 S1 are pulse-processing modules for CENTUM field control stations. AAP149-S00 S1 acquires sixteen open-collector pulse inputs for PM1-compatible processing, while AAP849-S00 S1 couples eight pulse inputs with eight 4 to 20 mA outputs for PAC-compatible loops.
Pulse transitions enter Yokogawa AAP149-S00 S1 at up to 6 kHz and are detected on the trailing edge before the module updates controller data every 2 ms. Yokogawa AAP849-S00 S1 accepts pulse trains up to 12 kHz, updates the input image every 1 ms and separately converts eight controller commands into analog current outputs.
The dedicated cable is part of the signal path for Yokogawa AAP149-S00 S1 and Yokogawa AAP849-S00 S1. AAP849-S00 S1 also requires output-loop load and open-circuit behavior to be checked, whereas AAP149-S00 S1 has no analog output circuits.
02
Technical Parameters
| TECHNICAL ITEM | AAP149-S00 S1 | AAP849-S00 S1 |
|---|---|---|
| Brand | Yokogawa | |
| Model | AAP149-S00 S1 | AAP849-S00 S1 |
| Nameplate Suffix | S1 | S1 |
| Product Name | 16-channel pulse input module | 8-pulse-input / 8-analog-output module |
| Country | Japan | |
| Input Channels | 16 | 8 |
| Output Channels | None | 8 |
| Pulse Input | Open-collector transistor contact | |
| Input Frequency | 0 to 6 kHz | 0 to 12 kHz |
| Detection Edge | Trailing edge | |
| Input Update | 2 ms | 1 ms |
| Analog Output | Not applicable | 4 to 20 mA |
| Output Load | Not applicable | 0 to 750 Ω |
| Output Accuracy | Not applicable | ±48 µA |
| Output Update | Not applicable | 10 ms |
| Output Step Response | Not applicable | 40 ms |
| Current Consumption | 400 mA at 5 V | 310 mA at 5 V plus 250 mA at 24 V |
| External Connection | Dedicated KS2 cable | Dedicated KS1 cable |
| Dimensions | 32.8 × 130 × 127.2 mm | |
| Weight | Approx. 0.30 kg | |
03
Monitoring and Control
The modules organize pulse events differently because only AAP849-S00 S1 adds an analog control path.
Event-to-data path
Trailing-edge detections become controller pulse data through the dedicated cable and configured channel mapping; the controller, not the module face, supplies the engineering interpretation.
Analog command return
AAP849-S00 S1 converts eight controller values into 4 to 20 mA outputs. AAP149-S00 S1 stops at pulse acquisition and cannot drive analog loops.
04
System Integration
AAP149-S00 S1 and AAP849-S00 S1 sit between open-collector pulse sources and their CENTUM control functions, with different cable and output requirements.
Source interface
The sensor or pulse source must present the documented open-collector signal and maintain the expected trailing-edge behavior across the configured frequency range.
Dedicated cable route
KS2 belongs to AAP149-S00 S1; KS1 belongs to AAP849-S00 S1. Cable identity and connector orientation must be verified before the module is seated.
Output-loop boundary
For AAP849-S00 S1, each 4 to 20 mA receiver remains within 750 Ω and circuit-open detection is included in commissioning checks.
05
Product Help
01Can Yokogawa AAP149-S00 S1 / AAP849-S00 S1 be selected only from the pulse frequency?
No. Yokogawa AAP149-S00 S1 / AAP849-S00 S1 differ in channel count, cable type and whether analog outputs are required, so the complete input/output arrangement must be matched.
02Why can Yokogawa AAP149-S00 S1 / AAP849-S00 S1 miss pulse counts?
For Yokogawa AAP149-S00 S1 / AAP849-S00 S1, verify open-collector wiring, trailing-edge quality, frequency limit, common reference, cable assignment and the controller sampling configuration.
03Which dedicated cable belongs to Yokogawa AAP149-S00 S1 / AAP849-S00 S1?
Yokogawa AAP149-S00 S1 / AAP849-S00 S1 use KS2 and KS1 dedicated cables respectively; the two cable assignments should not be exchanged.
04Does Yokogawa AAP149-S00 S1 / AAP849-S00 S1 provide analog outputs on every model?
No. Yokogawa AAP149-S00 S1 / AAP849-S00 S1 provide no analog output and eight 4 to 20 mA outputs respectively.
05How should Yokogawa AAP149-S00 S1 / AAP849-S00 S1 be tested after wiring?
For Yokogawa AAP149-S00 S1 / AAP849-S00 S1, inject a known low-rate pulse first, confirm ordered counts, then raise frequency within the specified limit; also verify each AAP849-S00 S1 current output under its actual load.
06What causes an output-open indication on Yokogawa AAP149-S00 S1 / AAP849-S00 S1?
Only the AAP849-S00 S1 part of Yokogawa AAP149-S00 S1 / AAP849-S00 S1 has current outputs; check loop continuity, polarity and load when its output current falls below the open-detection threshold.
06
Why Choose Moore Automation
Moore Automation
https://www.mvme.cn/Moore Automation works with multi-brand automation references and keeps each enquiry tied to the requested manufacturer and full model. This structure helps distinguish similar modules, option codes and generations during commercial review.
Multi-brand scopeControl and monitoring ranges
Exact identifiersSuffixes remain visible
Clear handoffTechnical and commercial notes linked
07
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