Casambi 0–10V lighting control uses a Casambi-enabled interface to convert Bluetooth mesh commands into a polarized analog signal for a compatible LED driver. Casambi manages grouping, scenes, schedules and sensor logic, while the local DIM+/DIM− pair controls the driver’s light output. Compatibility depends on the controller model, driver interface, current direction, channel count and off behavior.
What Is Casambi 0–10V Lighting Control?
Casambi 0–10V lighting control adds wireless control to LED fixtures that use analog dimming drivers. A Casambi 0-10v controller joins the network, receives commands from the app, switches, sensors, scenes, or timers, and outputs a local analog dimming signal to the driver. The driver then adjusts light output. In specification work, Casambi 0-10v lighting control should be treated as a compatibility task, not just a feature label.
The local DIM+/DIM− pair remains polarized and driver-specific. A Casambi-enabled 0–10V controller does not make every analog driver automatically compatible, and not every Casambi 0-10v LED driver description means the same hardware arrangement.
How the Wireless and Analog Signal Paths Work
The control path has two layers.
Wireless layer: app, switch, sensor, scene, or timer → Casambi mesh → control module.
Local wired layer: control module → DIM+/DIM− → LED driver → LED load.
Casambi replaces central or inter-luminaire communication with wireless mesh communication. It does not eliminate mains wiring or the local polarized DIM+/DIM− pair between controller and driver. That distinction matters in every Casambi 0-10v lighting control design and every Casambi wireless 0-10v retrofit.
Local Casambi control usually does not require an external gateway. A network can include up to 250 units according to current product information. Long Range performance only applies when the network is configured for Long Range and all relevant devices support LR operation.
0–10V vs 1–10V: What Is the Practical Difference?
The market often uses 0–10V and 1–10V loosely, but they should not be treated as identical. In many traditional interfaces, the driver provides the control current and the controller sinks it. Around 10 V usually requests maximum output, while around 1 V represents minimum dimmed output. What happens below that level depends on the exact controller and driver pairing.
Some products can achieve electronic off, while others only dim to a low output level. Support for electronic off must be confirmed on both sides of the control loop. If a project requires true power disconnection, a relay may still be necessary.
For that reason, Casambi 1-10v lighting control should be checked just as carefully as 0–10V control. The driver datasheet should confirm accepted voltage range, minimum dim level, off behavior, control current, and polarity. In practice, Casambi 1-10v lighting control is not automatically interchangeable with every 0–10V driver.
Current Sinking vs Current Sourcing
Current direction is one of the most important matching checks in Casambi 0-10v lighting control. In a sourcing arrangement, the controller actively supplies the analog control voltage. In a sinking arrangement, the driver provides the reference and the controller pulls the signal to the required level.
Source-to-source or sink-to-sink pairings do not form a valid control loop unless the hardware explicitly supports automatic or dual-mode matching.
Sink/source capability also differs by model and product generation. The current CBU-A2D-LR supports either sinking or sourcing operation at up to 8 mA per 0–10V channel. The non-LR CBU-A2D specified for the United States and Canada uses sinking outputs rated at up to 7 mA per channel, while the CBU-ARP-LR provides one 7 mA sinking output. Always verify the exact model, regional version, and current datasheet revision.
The CBU-ASD-LR also supports 0–10V sinking or sourcing in analog mode, but its mains output has separate restrictions that must be followed. This is why a Casambi 0-10v dimmer should be selected by exact electrical mode, not by a generic label.
Which Casambi 0–10V Controller Should You Use?
The right controller depends on driver type, project region, supply voltage, channel count, and shutoff strategy.
Model, region, and voltage reference
CBU-A2D-LR: 100–240 VAC, non-US/Canada use, two 0–10V channels, sinking or sourcing, IP20.
CBU-A2D: 100–277 VAC for US and Canada versions, two 0–10V channels, sinking outputs, IP20.
CBU-ARP-LR: 120–277 VAC, one 0–10V sinking output up to 7 mA, built-in 2.0 A relay, motion input, IP20.
CBU-ASD-LR: 220–240 VAC, one 0–10V sinking or sourcing analog output, switched mains output for external relay control only, IP20.
None of these models should be assumed suitable for direct 347V or 480V supply. Projects using 347V or 480V lighting must use a properly rated Casambi Ready controller or an approved auxiliary-power architecture.
One driver per permitted analog output
For the Casambi-manufactured controllers discussed in this guide, follow the stated maximum of one driver per analog output. If multiple luminaires must operate together, the preferred approach is usually to provide each controlled driver with its own permitted output and group the luminaires logically in the Casambi App. Only parallel multiple drivers when the exact Casambi Ready controller datasheet explicitly permits it.
If you are specifying a Casambi 0-10v control module, treat one driver per permitted output as the safe baseline.
Single-Channel, Dual-Channel, and Tunable White Profiles
A Casambi-enabled 0–10V controller can support different behaviors depending on hardware and fixture profile. Profile selection is part of hardware compatibility, not merely an app display preference.
Single-channel operation is appropriate for standard brightness control. A Casambi dual channel controller is more flexible and can be used for two independent dimming channels, two lighting zones, direct/indirect control, or a tunable-white driver with two analog inputs. In many projects, the Casambi dual channel controller is the best fit when one fixture needs two separately managed outputs.
Useful profile examples for the CBU-A2D-LR family include 2CH 0-10V for two independent outputs, 0-10V TW for warm/cool mixing, 0-10V 2CH Dim, TW [NoMix] for brightness plus CCT logic, 2CH Dim, Vertical for direct/indirect ratio control, and 0-10V + Relay for one analog dimming output plus external relay control.
When a relay profile is selected on the CBU-A2D-LR, Channel 2 is no longer available as a second 0–10V dimming channel.
A Casambi tunable white controller arrangement must also match the driver logic. Some drivers use one input for brightness and one for CCT, while others use separate warm and cool channels. A Casambi tunable white controller only works well when the selected profile and the driver’s analog logic match.
Dim-to-Off vs Internal and External Relays
Minimum dimming does not always mean complete off. In Casambi 0-10v lighting control, there are three different shutoff strategies.
First, a driver may support dim-to-off or electronic off through the analog input itself.
Second, a controller may contain an internal mains-rated relay. The clearest example is the CBU-ARP-LR, which includes a built-in 2.0 A relay to cut power when the connected driver cannot turn off fully from the analog input.
Third, the system may use an external relay. On the CBU-A2D-LR, Channel 2 can be configured as a 12 VDC external relay-control output at up to 100 mA, but that output is not a mains relay. On the CBU-ASD-LR, the switched mains output is only allowed to connect to an external relay and must not be connected directly to the LED driver mains input.
Relay selection should never be based on steady-state current alone. The LED driver inrush current must also be checked. In many retrofit discussions, people casually call every analog controller a Casambi 0-10v dimmer, but the relay architecture still has to be defined separately.
How Do Occupancy and Daylight Sensors Control a Casambi 0–10V Fixture?
In most projects, the sensor affects the Casambi network first, and the network then changes the analog output to the driver. The sensor does not directly take over the driver’s DIM line.
A Casambi wireless sensor can trigger scenes, occupied/unoccupied levels, daylight response, linger, and fade logic through the mesh. That is the clearest explanation for occupancy and daylight control in Casambi 0-10v lighting control. For users searching specifically for Casambi wireless 0-10v solutions, this avoids confusion about direct sensor-to-driver wiring.
The hardware details can differ by product. The CBU-ARP-LR has a 12–24 VDC motion ON/OFF input, and the sensor requires external power. It is not a general lux input. Some sensor functions on the CBU-A2D or CBU-ASD families depend on selected fixture profile or DALI mode and should not be assumed to behave the same way in every 0–10V configuration.
Wiring, Voltage, Enclosure, and Antenna Requirements
The controller, driver, and enclosure must all be checked as one system. Most of the modules discussed here are IP20 products for indoor use only. Installing a controller inside an IP65 fixture does not automatically make the module itself IP65.
The module should be mounted inside a compliant luminaire or control enclosure. After installation, the fixture must still maintain its required sealing, electrical clearances, and product compliance status.
Metal housings also affect radio performance. Casambi does not recommend burying the module inside fully enclosed metal spaces or placing it tight against large metal structures without RF planning. High-bay, parking-garage, and linear fixtures made of metal may require antenna positioning, a non-metal RF window, or an external control location. Site signal and mesh-connectivity testing should be part of commissioning.
Ambient and case temperature limits matter too. The module and the LED driver must both operate within their specified ta and tc limits. This is especially relevant when a Casambi 0-10v control module is installed inside a compact fixture.
Driver and Controller Selection Checklist
Before ordering hardware, ask the driver or fixture supplier for the following: exact driver model, project voltage and region, 0–10V or 1–10V interface, source or sink behavior, control current per driver, minimum dimming level, dim-to-off or electronic-off support, analog-input function, dimming curve, inrush current, relay strategy, fixture material, controller location, temperature limits, required profile, and occupancy/daylight sensor method.
This checklist prevents many field mismatches. It is also the easiest way to confirm whether a proposed Casambi 0-10v LED driver combination is truly compatible or only appears compatible on paper.
Commissioning and Troubleshooting
A good commissioning sequence should test both the control logic and the real driver behavior.
Recommended test points
Check response at 0%, 1%, 10%, 25%, 50%, 75%, and 100% commands. Confirm the lowest stable dimming level. Note any flicker, stepping, delay, or channel mismatch. At 0%, confirm whether the result is minimum light, electronic off, or relay-based power cut. Check relay switching and driver inrush behavior. Verify power-restoration behavior. In dual-channel systems, test each channel independently. In tunable-white systems, verify both CCT endpoints and the direction of change. After installation in metal fixtures, test signal strength and mesh connectivity at the real site.
Typical faults to investigate
If a fixture stays at full output, check polarity, sink/source pairing, channel profile, and analog continuity. If a fixture does not turn fully off, verify the driver’s off capability and the selected relay strategy. If dimming is unstable, review driver matching, wiring length, common reference, and mixed driver models. If tunable white behaves incorrectly, review channel assignment, selected profile, and driver input logic.
FY LIGHTING Casambi-Compatible 0–10V Fixture Integration
For fixture manufacturers and project buyers, the practical value is not only controller selection but fixture integration quality. FY LIGHTING can approach Casambi-compatible 0–10V projects by matching the driver and control module, confirming available installation space, planning antenna location, preparing factory pre-wiring, and coordinating any sensor or relay requirement in advance.
That approach is especially relevant for high-bay, parking-garage, and linear fixtures. It can also support sample compatibility testing, wiring-diagram preparation, IES and DIALux support, and OEM or ODM configuration. Unless a specific product is officially listed in the Casambi ecosystem, the accurate term is Casambi-compatible, not Casambi certified or officially approved.
FAQ
Does Casambi 0–10V control require a gateway?
Usually no for local control. Casambi networks normally work locally without an external gateway, although remote cloud access requires the appropriate gateway architecture.
Does wireless Casambi control eliminate DIM+/DIM− wiring?
No. Wireless Casambi replaces the central communication layer, but the local polarized DIM+/DIM− wiring between controller and driver is still required.
Which Casambi controller is suitable for 120–277V projects?
That depends on region and product family. For example, the CBU-ARP-LR is specified for 120–277 VAC, while the non-LR CBU-A2D is the model intended for the US and Canada market. Always verify the exact datasheet and certification region.
Can CBU-A2D-LR control two LED drivers?
It can control one or two 0–10V drivers according to current product information, but this guide recommends following the specific permitted output allocation in the datasheet and treating one driver per analog output as the default rule unless the exact product documentation explicitly permits otherwise.
Can Casambi 0–10V control be used on 347V or 480V circuits?
Not by directly feeding the modules described here. Projects using 347V or 480V must use a properly rated controller solution or an approved auxiliary-power architecture.
Can 0–10V control report driver faults or energy data?
Normally no. Standard 0–10V is a one-way analog interface. It tells the driver what control level is being requested, but it does not normally return diagnostics, energy data, temperature, runtime, or fault information.
Can Casambi control occupancy and daylight sensors with a 0–10V driver?
Yes, but the usual logic is sensor to Casambi network, then Casambi network to analog output. The exact sensor method depends on whether the project uses wireless sensors, motion-input hardware, or profile-specific features.
What happens after a power failure?
That depends on the selected device behavior, fixture profile, and project programming. Commissioning should verify whether the system restores to a default state, last state, or a programmed scene.
Should different 0–10V driver models be connected to the same output?
Not without explicit testing and approval. Different driver families can have different control currents, dimming curves, minimum levels, and off behavior, so mixed models should not be paralleled casually.
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