Yokogawa AIP831-101 Operation Key board

Description

Product Introduction & Engineering Value

The Yokogawa AIP831-101 is a dedicated operator-interface component rather than a generic USB keyboard. Its eight-loop control arrangement is intended for CENTUM VP Desktop Type HIS stations where operators need direct interaction with multiple control-loop faceplates.

The “-101” configuration matters when replacing an existing unit. Yokogawa’s suffix documentation defines “-1” as the version with a mode-selection switch, while the following “1” identifies the specified operation-confirmation key type. The exact suffix and option configuration should therefore be matched against the keyboard nameplate and existing HIS configuration before ordering.

Technical Specifications

These specifications are documented by Yokogawa for the AIP831 family. Both USB connectors are required to remain directly connected to the PC; they are not simply interchangeable peripheral ports.

AIP831-101 Configuration

Yokogawa’s model code defines:

• AIP831-0 — without mode-selection switch
• AIP831-1 — with mode-selection switch
• 0 — operation confirmation key Type A
• 1 — operation confirmation key Type B
• /VESA — VESA bracket option
• /EIM — English instruction manual
• /JIM — Japanese instruction manual

Therefore, AIP831-101 should be treated as a configuration-specific ordering code, not merely an alternate spelling of the base AIP831 model.

Field Application & “Trench” Experience

A typical application is a CENTUM VP control-room workstation handling several regulatory loops from one Desktop Type HIS. An operator can use the dedicated eight-loop controls while the corresponding instrument faceplate is highlighted through the touch-sensor function.

Three practical scenarios are particularly relevant:

1. Process-unit operator stations — direct access to several loops without relying exclusively on mouse navigation.
2. Existing CENTUM VP workstation replacement — useful when an original AIP831 keyboard develops failed keys, USB faults, or degraded touch sensing.
3. Control-room hardware refurbishment — retaining the existing Yokogawa operator-interface architecture instead of redesigning the HIS workstation around a generic keyboard.

Yokogawa documentation also states that only one AIP831 keyboard can be used per Desktop Type HIS.

AIP831-101

AIP831-101

Transparency SOP: QA & Testing

For New Surplus AIP831-101 inventory, a practical receiving and inspection procedure should include:

1. Nameplate verification — confirm AIP831-101 and compare the complete suffix/options with the customer’s required configuration.
2. Physical inspection — check keyboard housing, keys, USB cables/connectors, mounting hardware, and VESA interface if supplied.
3. USB verification — test both USB connections independently and confirm that the keyboard and sound functions enumerate correctly.
4. Key-function test — verify loop-control keys, mode-selection function, and operation-confirmation functions against the applicable configuration.
5. Touch-sensor test — confirm bare-hand touch detection.
6. Alarm/sound test — verify the USB speaker and electronic buzzer functions where the test environment supports them.
7. Burn-in/functional test — operate the unit continuously before shipment when required by the customer’s QA procedure.

New Surplus authenticity should be established from the physical Yokogawa identification and documentation, not simply from a seller’s “new” label. For refurbished units, request the refurbishment/test report and clearly distinguish replaced components from original hardware.

Veteran’s Tech Trap Guide

⚠️ Trap #1 — Buying the base AIP831 instead of the required suffix.
The AIP831 family has distinct suffix codes for the mode-selection switch and operation-confirmation key. Match the complete ordering code before approving a replacement.

⚠️ Trap #2 — Connecting only one USB cable.
The AIP831 uses two USB Type-A connections: one for keyboard operation and one for the sound function. Yokogawa specifies that both connectors must be connected directly to the computer.

⚠️ Trap #3 — Ignoring the software package.
The hardware alone does not establish the eight-loop operating function. Yokogawa specifies an associated Eight-loop Simultaneous Operation Package; the applicable package depends on the CENTUM VP release. For older systems, Yokogawa documented LHS1140 with the standard operation/monitoring function; later CENTUM VP Release 6 documentation identifies VP6H1140.

Dynamic FAQ

What is the Yokogawa AIP831-101 used for?

It is an operation keyboard for eight-loop simultaneous operation on a Yokogawa CENTUM VP Desktop Type HIS. It provides eight dedicated loop-control keys and touch sensing for instrument faceplate highlighting.

Is a DCS I/O module?

No. It is an operator-interface keyboard, not an FCS I/O module, controller, or communication card. Its interface to the workstation is through USB.

Does AIP831-101 require two USB connections?

Yes. The keyboard function uses USB 2.0 full-speed, while the sound function uses USB 1.1 full-speed. Yokogawa specifies two USB Type-A connections and requires both to be connected directly to the PC.

Can I replace an AIP831 with any AIP831 variant?

Not without checking the complete code. The AIP831 family uses suffixes for the mode-selection switch and operation-confirmation key, plus optional VESA and documentation codes. Verify the existing nameplate before substitution.

What should I verify when purchasing New Surplus AIP831-101?

Request clear photographs of the Yokogawa nameplate, complete ordering code, connectors, and physical condition. For a New Surplus unit, confirm that the hardware has not been represented as refurbished, repaired, or re-labeled. Functional USB, key, touch-sensor, and sound testing should also be available upon request.

What warranty should apply to a New Surplus AIP831-101?

Warranty terms depend on the supplier rather than Yokogawa’s generic hardware specification. A purchase quotation should explicitly state the warranty period, return conditions, and whether the warranty covers key functions, USB interfaces, touch sensing, and sound operation.