F-22 fighter jet hangars at Hickam AFB. Observatory telescope interlocks. Multi-megawatt generator paralleling. AT&T undersea cable infrastructure. Systems Integration Group engineers industrial control systems that run without fail — in environments that demand it.
Every project here was earned through referral or reputation. The complexity speaks for itself — we take on problems others hand back.
Designed, built, and installed a safety interlock system for the Subaru Telescope rotating observatory. The dome's azimuth rotation locks access doors electronically — unlocking passage only when the rotating structure comes to rest in a safe, aligned position. Three networked control panels, six touchscreens, and an Allen-Bradley PLC network — including a remote touchscreen node at the University of Hawaii Hilo office.
Merging the operation of two existing paralleling 1.2 MW diesel generators with a new third 1.2 MW unit — a combined 3.6 MW of synchronized standby power for a major data center. Critical systems integration requiring precision load sharing, synchronization, and switchgear control.
Replaced an end-of-life Vykon JEC-334 (JACE) controller with a Maple Systems HMC4101A-M HMI+PLC. Migrated four Yaskawa Z1000 VFDs from BACnet to Modbus/RTU, rewired all analog and digital I/O, and added a web interface via Apache/Python for remote monitoring — fully operational.
Third automated F-22 Raptor maintenance hangar at Hickam AFB. Emerson RX3i PAC/PLC with a 15-inch Weintek touchscreen controls a full environmental envelope: six Danfoss/Trane TR200 and two Yaskawa V1000 VFDs, motorized damper operators, and a sensor network covering temperature, humidity, airflow, and VOC — sustaining the precise conditions required for fifth-generation aircraft maintenance.
Ancillary 4.8 KVA 48-Volt DC switchgear power supply for AT&T's Miami undersea cable landing station — critical infrastructure where reliable DC power is non-negotiable. Maple Systems HMC4010A-M 10.1-inch touchscreen with voltage and current transducers provides real-time monitoring of the DC bus serving transoceanic cable equipment.
Allen-Bradley, Emerson RX3i PAC, Maple Systems, Weintek, and custom PLC/HMI platforms. Ladder logic, structured text, and touchscreen development from scratch.
Danfoss TR200, Yaskawa V1000/Z1000, and other platforms over Modbus/RTU, BACnet, and proprietary serial. Eight-plus VFDs networked across active projects.
Multi-unit diesel generator synchronization, load sharing, and utility tie-in. Up to 3.6 MW of paralleled standby power integrated.
Networked door control, position-based unlocking, and multi-node Ethernet PLC architectures for hazardous and precision environments.
DOD facility environmental control — temperature, humidity, airflow, and VOC monitoring for aircraft maintenance hangars requiring precise atmospheric conditions.
Custom web dashboards over Apache/Python for real-time process visibility. Ethernet-connected HMIs with remote access, data logging, and 48VDC telecom power monitoring.
Systems Integration Group is a Honolulu-based engineering firm specializing in industrial control systems for clients who can't afford downtime. Most of our work comes through referral — from contractors, facility managers, and project engineers who've seen what we deliver.
The Subaru Telescope found us through an internet search. The Air Force came back for a third F-22 hangar at Hickam. AT&T trusted us with 48VDC power monitoring at a Miami undersea cable landing station. We design, build, wire, program, and commission in-house — no subcontracted control work.
Our project sites span all Hawaiian islands, California, Florida, New York, and New Jersey — serving military, industrial, medical, research, and critical telecom infrastructure clients.
Start a Conversation →We're selective about the work we take on — which means every client gets our full attention. If you have a complex control problem, a failing legacy system, or a project others have struggled with, we want to hear about it.