Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IIMKM02A |
| Spare Model | 6642376A3 |
| Brand | ABB |
| Product Type | Multibus Keyboard Module |
| Origin | Sweden |
| Weight | 0.5 kg |
| Dimensions | 30.5 x 2.5 x 22.9 cm |
| Operating Temp | 10 deg C to 40 deg C |
| Nonoperating Temp | -30 deg C to 65 deg C |
| Power Consumption | +5 VDC at 20 A, +12 VDC at 4 A, -12 VDC at 4 A |
| Line Voltage | 240 V nominal |
| Line Frequency | 47 to 63 Hz |
| Alarm Relays | 6 per keyboard |
| Alarm Tones | 5 per keyboard |
| Annunciator Display Panels | 4 panels per IIMKM02A module |
| Pushbuttons and LEDs | 32 pushbuttons and LEDs per annunciator panel |
| Operator Keyboard Output Relay Rating | 250 mA at 24-28 VDC per module |
ABB Multibus Interface and Control Characteristics
The IIMKM02A module provides physical relay output handling for operator keyboard signals and annunciator display functions. It interfaces with ABB Multibus control architectures through dedicated hardware connections and manages discrete operator input indications.
Additionally, the module supports alarm annunciation through six alarm relays and five selectable alarm tones per keyboard. The annunciator interface accommodates four display panels, with each panel providing 32 pushbuttons and LED indicators for operator interaction.
The module follows ABB industrial control hardware design practices, including backplane bus communication interfaces, I/O density scaling for modular system expansion, and firmware compatibility requirements within supported Multibus platforms.
Frequently Asked Questions
Q: What power inputs are required for the ABB IIMKM02A module?
A: The IIMKM02A requires +5 VDC at 20 A, +12 VDC at 4 A, and -12 VDC at 4 A power supply inputs.
Q: How many annunciator panels can one IIMKM02A module support?
A: One IIMKM02A module supports four annunciator display panels, with each panel providing 32 pushbuttons and LED indicators.
Q: What are the output relay specifications for operator keyboard functions?
A: The operator keyboard output relays are rated at 250 mA at 24-28 VDC per IIMKM02A module.
Field Installation Guidelines
Install the IIMKM02A module in the designated ABB Multibus rack position according to system hardware documentation.
Verify that all power supply connections match the required DC voltage inputs before energizing the module. Route keyboard, annunciator, and relay wiring separately from high-voltage power conductors to reduce electrical interference.
Connect protective grounding according to cabinet grounding practices. Confirm relay output polarity, terminal assignments, and field wiring continuity before system operation.
Maintain proper ventilation around the installed module and verify environmental conditions remain within the specified operating temperature range.
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