Description

Yokogawa AIP826-2S2 Industrial Operator Keyboard

The Yokogawa AIP826-2S2, also cataloged as the AIP826-2 Industrial Operator Keyboard, operates as a dedicated hardware component for tactile process control input within CENTUM VP and CENTUM CS 3000 Distributed Control Systems. It provides physical key execution for operator commands, alarms, and system navigation.

Hardware Specifications

Parameter	Specification
ModelBrand	Yokogawa
Origin	Japan
Weight	2.0–2.5 kg (depending on mounting housing)
Dimensions	Compact, fits standard HIS desktop or console flush mount
OperatingTemp	0 to 50 degC (Operating), -20 to 60 degC (Storage/Transport)
PowerConsumption	5 V DC ±5%, max 500 mA via USB
KeyLayout	105 keys: alphanumeric, operation control, window control, user-programmable
Interface	USB 1.1 / 2.0 compatible
DustResistance	Industrial control room environment tolerant
WithstandingVoltage	500 V AC for 1 minute between host ground and frame ground

Process Control DCS Features

The keyboard maintains channel-to-channel isolation between function keys to prevent signal interference during simultaneous operations. It supports 4-20 mA HART loop protocol integration via the host DCS for tactile input validation and process command acknowledgment. Cold junction compensation (CJc) is implemented for any temperature-dependent key circuitry to maintain signal stability over the operating range.

Frequently Asked Questions

Q: Does the AIP826-2S2 support hot-swap operation?
A: No. The keyboard must be connected before DCS startup; USB insertion under powered operation may not be recognized or could generate transient signals.

Q: Can the key layout be customized for different process functions?
A: Yes. User-programmable keys can be mapped through the host HIS configuration software, but the physical layout cannot be modified.

Q: What is the maximum current drawn through the USB interface?
A: The maximum current consumption is 500 mA supplied via the USB port; ensure the host provides sufficient power for stable operation.

Field Installation Guidelines

• Mount the keyboard on a flat HIS console surface using the supplied brackets or desktop mount.
• Ensure proper grounding of the frame to avoid ground loop currents.
• Route USB cables separately from high-current or high-frequency lines to prevent electromagnetic interference.
• Avoid exposure to direct water jets or chemical cleaning agents.
• Maintain ambient temperature and humidity within specified operating limits.
• For multi-key operations, verify channel-to-channel isolation integrity before commissioning.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems