Yokogawa AAP135-S00 S2 8-Channel Pulse Input Module
Manufacturer: Yokogawa
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Part Number: AAP135-S00 S2
Condition：New with Original Package
Product Type: Pulse Input Modules
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Country of Origin: Japan
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Yokogawa AAP135-S00 S2 Pulse Input Module
The Yokogawa AAP135-S00 S2, also cataloged as the AAP135-S00 Pulse Input Module, operates as a dedicated hardware component for converting pulse train signals into digital process variables within Yokogawa CENTUM VP Field Control Station architectures.
Suffix Breakdown & Model Matrix
The suffix alphanumeric sequence indicates precise structural build and performance options for the hardware assembly:
- AAP135: Base model designation specifying an 8-channel isolated pulse input hardware module.
- -S: Indicates standard operational features without non-standard intrinsic safety options.
- 0: Specifies standard functional execution without customized firmware protocols.
- 0: Designates standard connector termination interface configuration.
- S2: Represents style 2 hardware modification providing enhanced signal circuit stability.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AAP135-S00 S2 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.3 kg (0.65 lbs) |
| Dimensions | 3.3 cm x 10.7 cm x 13.0 cm (1.3 in x 4.2 in x 5.1 in) |
| Operating Temp | 0-50 deg C |
| Power Consumption | 300 mA at 5 VDC, 400 mA at 24 VDC |
| Input Channels | 8 isolated channels |
| Signal Types | Contact ON/OFF, voltage pulse, current pulse |
| Input Frequency | 0 to 10 kHz |
| Minimum Pulse Width | 40 us |
| Channel Isolation | Galvanic channel-to-channel and field-to-system isolation |
| Withstanding Voltage | 500 VAC for 1 minute |
| Transmitter Power Supply | Selectable 12 VDC or 24 VDC |
| Data Update Period | 2 ms |
| Redundancy | Supports dual-redundant configuration |
Process Control Signal Processing
This module delivers full individual channel-to-channel isolation, suppressing ground loop interference across long field wiring runs connecting high-speed pulse devices. Onboard signal processing subcircuits accept two-wire and three-wire field transmitter configurations while generating selectable 12 VDC or 24 VDC loop power with onboard current limiting. Dedicated chattering filters eliminate contact bounce phenomena from mechanical switch inputs, maintaining clean pulse counting across frequencies up to 10 kHz. Furthermore, the module updates system data every 2 ms, passing accurate frequency calculations directly across the field bus interface to maintain precise process loop tracking.
Frequently Asked Questions
Q: How does the module handle pulse contact bounce from mechanical switches?
A: The onboard hardware provides a configurable chattering filter that suppresses transient mechanical contact noise before passing signals to counting logic.
Q: What insulation rating protects individual signal channels against common-mode noise?
A: Internal galvanic isolation shields channels up to 500 VAC for 1 minute both channel-to-channel and between field circuitry and the system bus backplane.
Field Installation Guidelines
Position the module inside the designated CENTUM VP I/O slot, pushing firmly until the retaining assembly locks. Attach the ATK4-00 cable interface, torqueing retaining hardware to ensure stable signal pin alignment and low contact resistance. Ground all field cable shields at a central bus bar outside the module housing to prevent external high-frequency noise insertion into isolated input circuits. Verify that the correct internal shunt resistors are selected for current pulse configurations before applying field power. Ensure sufficient ventilation spacing surrounding the node baseplate to maintain ambient temperature below 50 deg C during continuous duty cycles.