Remote Level Control-Rotary Optical Encoder-Black

The RDL DB-RLC10 is a black remote level control built around an optical rotary encoder. It combines level adjustment, a visual operating-level display, and an integral 0 to 10 VDC ramp generator in one control. The unit supports either a single control location or an installation with as many as ten remote control locations. It is compatible with all RDL VCA modules. The display becomes bright during adjustment, dims afterward, and the control powers up to the last level used.

Ideal Use Cases

This model suits systems that require level control from one convenient point or several distributed points. It is particularly applicable when an existing or planned design uses RDL VCA modules and calls for up to ten control locations. The black finish addresses installations specifying this version rather than the stainless-steel or white alternatives listed for the product family. Its visible level indication is also useful when the operator needs confirmation of the operating level directly at the control location.

Why Choose This Model

The DB-RLC10 brings together an optical rotary control, visual feedback, ramp generation, and pulse outputs. Its integral ramp operates from 0 to 10 Vdc, serving as an input in slave mode or an output in master mode. Two open-collector pulse outputs provide UP and DOWN signals at 20 mA. The control therefore offers multiple supplied control signals while retaining the direct feel of a rotary encoder.

Adjustment behavior varies with rotation speed. The supplied specifications list approximately five rotations from minimum to maximum during slow rotation without acceleration, approximately three rotations at medium speed with acceleration, and approximately one fast counterclockwise rotation. This response supports both measured adjustments and faster level changes.

Installation and Integration

The DB-RLC10 mounts in a standard US electrical box or in RDL WB- or SMB-series boxes. A cover plate is available separately. Its specified dimensions are 4.11 inches high by 1.31 inches wide, with a depth of 0.98 inch without the knob. Metric measurements are listed as 10.44 by 3.33 by 2.49 centimeters without the knob.

Power requirements are 24 Vdc at 50 mA with a ground-referenced supply. Integration options include the 0 to 10 Vdc ramp connection and the two open-collector UP and DOWN pulse outputs. Pulse duration ranges from 500 microseconds minimum to 4 milliseconds maximum, while the minimum interval between consecutive pulses is 500 microseconds. These defined electrical characteristics give system designers concrete parameters for connecting the control to compatible equipment.

Performance Highlights

• Optical rotary encoder for level adjustment.
• Single-location or multiple-location control with support for up to ten locations.
• Integral 0 to 10 Vdc ramp generator for master-mode output or slave-mode input.
• Two 20 mA open-collector pulse outputs for UP and DOWN commands.
• Visual display of the operating level.
• Bright display during adjustment and dimmed display after adjustment.
• Power-up behavior that restores the last level used.
• Compatibility with all RDL VCA modules.

The combination of display behavior and last-level power-up operation makes the control state easy to follow. During an adjustment, the brighter display emphasizes the level indication. Once the adjustment is complete, the display dims while continuing to provide visual level information.

What Makes It Different

The DB-RLC10 is more than a basic rotary control. Its optical encoder is paired with an operating-level display, speed-related adjustment behavior, an integrated ramp generator, and dedicated UP and DOWN pulse outputs. It can be used at one location or expanded across multiple control points without exceeding the stated ten-location limit. The ability to operate with all RDL VCA modules further defines its role within an RDL control installation.

This DB version is supplied in black. Stainless-steel and white versions are also identified as available, allowing the control format to be matched to different finish requirements while retaining the listed operating capabilities.

Final Assessment

The RDL DB-RLC10 is a focused choice when a system requires a black rotary optical encoder control, clear level indication, 0 to 10 Vdc ramp operation, and support for one or multiple locations. Its specified mounting compatibility, ground-referenced 24 Vdc power requirement, pulse-output timing, last-level power-up behavior, and compatibility with RDL VCA modules provide the practical details needed for selection and integration.