Small DC motors
Command forward, stop and reverse while limiting duty for the required speed or mechanical range.
CASAMBI ENABLED · TWO-WIRE DC POWER CONTROL
casPower
Forward. Reverse. Pulse. Hold. Modulate.
casPower puts a programmable H-bridge between Casambi and a two-wire 12–24 VDC load. Drive relays, solenoids, small motors, reversible actuators and other compatible devices—then use two universal digital I/O terminals to connect the rest of the control story.
MADE IN USADesigned, built and supported in Mesa, Arizona
CASAMBI → casPower → TWO-WIRE DC LOAD
OUTPUT AOUTPUT B
The same two output wires can carry forward polarity, reverse polarity, pulses or high-frequency PWM.
12–24 VDCClass 2 input and load supply
4 control modesmaintained, momentary, reversing and PWM
2 universal I/Oeach firmware-selectable as input or output
ONE POWER STAGE · MANY TWO-WIRE JOBS
Start with the load.
Choose the behavior it needs.
The H-bridge changes both voltage polarity and delivered duty. That makes casPower useful anywhere a compatible two-wire DC device needs more than a simple on/off contact.
Reversible actuators
Drive shades, vents, dampers, louvers and compatible two-wire mechanisms in either direction.
Solenoids and coils
Apply full power for reliable pull-in, then reduce steady duty when the load manufacturer permits it.
Relays and latches
Use maintained power or a precisely timed one-shot pulse for compatible conventional or latching devices.
FOUR OUTPUT PERSONALITIES
The profile says what to do.
The bridge does the power
work.
Choose the transfer function that matches the electrical load and mechanical application. Verify current, temperature and motion at worst-case supply voltage.
Maintained
Zero is off; a nonzero command holds the selected polarity. Optional full-duty pull-in can transition to reduced Hold PWM.
Momentary
A nonzero command produces one full-duty pulse for the programmed duration, then both outputs coast.
Reversing
Network values below center drive reverse, center is off, and values above center drive forward. Distance from center sets duty.
PWM Dim
A unipolar output rises from off to the Max Duty ceiling in the selected base polarity at approximately 20 kHz.
INTERACTIVE H-BRIDGE LAB
Change the load.
Change the electrical behavior.
Explore the four control modes and watch Output A / Output B respond. This browser demonstration illustrates command behavior; it does not configure hardware.
Load and control profile
Begin mechanically safe and uncoupled whenever motion is possible.
casPower H-BRIDGEOutput coasting
OUTPUT AHI-Z
OUTPUT BHI-Z
DUTY0%
SMALL DC MOTOR
M
Off: Output A and Output B are high impedance; the load coasts.
TWO UNIVERSAL FIELD INTERFACES
Bring contacts in.
Send electronic contacts out.
Firmware supports either terminal as a voltage-free input or a low-side output. The selected Casambi profile determines which roles and channels are exposed to the installer.
FIELD DEVICESwitch, sensor, relay or open-drain collector
→
I/O 1 + I/O 2 + GROUNDcasPower
→
CASAMBI / EQUIPMENTPushButton command or 25 mA contact sink
DRY CONTACT 1 I/OSource channel 0
Ready · voltage-free contact open
Electronic contact released
DRY CONTACT 2 I/OSource channel 1
Ready · voltage-free contact open
Electronic contact released
Profile availability: the released casPower - 1Out profile exposes one dry output. Firmware supports both terminals and all input definitions shown here; input and simultaneous two-I/O operation require approved Casambi profiles before field use.
Input behavior
- Normal, inverted or MultiSwitch Gang 1–10
- Maintained, toggle, hold-dim and double-tap modes
- I/O 1 reports channel 0; I/O 2 reports channel 1
- Input accepts only a closure to Ground—never external voltage
Output behavior
- Normal: Casambi ON closes the terminal to Ground
- Inverted: Casambi ON releases the terminal
- 25 mA maximum interface current
- Contact-sense inputs only—not line voltage or powered loads
MULTISWITCH GANG 1–10
Two universal inputs can join
two completely different
Gangs.
Each input has its own Action and Mode. Assign matching Gang numbers across compatible NED devices to distribute absolute level and next dim direction without traveler wires.
INPUT 1GANG 2Controls one room or function
⇄
CASAMBI MESHLEVEL + DIRECTIONEvery matching member updates
⇄
INPUT 2GANG 7Controls another room or function
FOURTEEN CONTROL PARAMETERS
Define the power stage.
Then define both field interfaces.
The output block controls motion, pulse and duty behavior. I/O 1 and I/O 2 each receive their own three-parameter action, mode and polarity set.
IDParameterWhat it controls
0Output Mode
Maintained, Momentary, Reversing or PWM Dim
1Polarity
Forward or reverse base direction
2Pulse Duration
Momentary output on-time in milliseconds
3Pull-In Time
Optional full-duty start period; zero disables it
4Hold PWM
Reduced steady drive after pull-in when the load permits
5Max Duty
1–100% ceiling for PWM Dim and Reversing
6Default State
Off, On or Last after power-up/restore
7Invert Network
Normal or inverted on/off semantics
8–10I/O 1 Action · Mode · Polarity
Standalone/Gang, switch interpretation and electronic-output state
11–13I/O 2 Action · Mode · Polarity
Independent matching parameter set for the second terminal
Start with Max Duty at 100%, Pull-In Time at 0 and Hold PWM at full unless the connected load’s datasheet explicitly supports reduced-duty holding. Measure current and temperature at worst-case voltage.
ONE FLOATING LOAD PATH · TWO DRY INTERFACES
Wire the load between A and B.
Keep both away from Ground.
Use a polarity-correct 12–24 VDC Class 2 supply rated for the connected load without exceeding the 2 A application limit.
12–24 VDC
Class 2 supply
→
Class 2 supply
casPowerOUTPUT A / OUTPUT B
GROUND
TWO-WIRE DC LOADRelay · motor · actuator · solenoid
Installation essentials
- Supply
- 12–24 VDC Class 2, polarity sensitive
- Powered output
- Output A / Output B H-bridge
- Application current
- 2 A maximum
- PWM
- Approximately 20 kHz
- Digital outputs
- Low-side, 25 mA maximum each
- Environment
- Indoor, open-type device
Do not connect casPower to a constant-current LED-driver output, ground Output A or Output B, or apply external voltage to either Digital I/O terminal.
PLAN · INSTALL · COMMISSION
Take the complete
control map to the job.
Use the installation guide for ratings and terminals, then the commissioning guide for all four output modes, parameters, I/O definitions and acceptance testing.
Installation manual
User Guide v1.05
Ratings, connection diagram, H-bridge output and universal I/O.Commissioning guide
Document version 1.00
Four power modes, fourteen parameters, profiles, Gangs and testing.Have an unusual two-wire DC load?
Bring us the voltage, current, motion or pulse requirement, duty cycle and control sequence.