Product
On-site controller for real-time DC fast charging power allocation.
Industrial DIN-rail gateway that monitors site import via external meter, applies limits and priorities, and writes Modbus setpoints to supported chargers — fast enough to prevent overloads.
The hardware
CO-LB-100 Gateway
Installs like any DIN-rail controller. Speaks Modbus to your chargers, reads an external meter, and keeps the critical path on-site — no cloud round-trip.
- Supply
- 9–30 V DC
- Mounting
- DIN rail
- Temp range
- −20°C to +60°C
- Protocols
- Modbus · M-Bus · OCPP*
OCPP available when needed — we prefer Modbus for robust, local charger control.
Where it sits
Between the grid connection, main meter, and your chargers — coordinating limits, priorities, and optional BESS or PV.
Control loop
A closed loop between the site main meter and DC fast chargers — measuring, deciding, and acting in real time.
- 01
Measure site load
Reads real-time power from the site main meter, including building loads.
- 02
Read charger status
Polls each DC fast charger over Modbus for status and active sessions.
- 03
Apply limits and priorities
Uses configured site, feeder, and group limits plus priority rules.
- 04
Send setpoints
Writes updated power setpoints to each charger, balancing active sessions.
- 05
Monitor and fail over
Follows defined fallback behavior if communication or hardware fails.
Capabilities
What operators configure on site — beyond the control loop itself.
Priority rules
Configurable priority between bays, groups, fleets, or truck lanes.
Scheduled behavior
Time-based rules for how aggressively chargers may draw power in different windows.
Expandable and scalable
From small depots to large hubs and phased charger roll-outs.
BESS and PV coordination
Optional coordination with battery storage and solar where interfaces exist.
Optional add-on
Cloud monitoring
Secure portal for remote configuration, live monitoring, historical data, and system alerts.
- Remote configuration and operational visibility
- Historical trends and alerting (scope via add-ons)
- Over-the-air firmware upgrades where included in your agreement
First year of remote access and upgrades is typically included; confirm exact scope in your proposal.
Why local
Power systems need fast, deterministic control — not cloud round-trips.
- Sub-second response to load changes
- Full operation during internet outages
- Deterministic behavior — no dependency on cloud latency
- Fail-safe defaults protect the site even during controller restart