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ANSI C137.1-2022 American National Standard for Lighting Systems-0-10V Dimming Interface for LED Drivers, Fluorescent Ballasts, and Controls, 2022
- Foreword
- (This foreword is not a part of ANSI C137.1-2022)
- This is a revision of the previous standard, ANSI C137.1-2019.
- National Electrical Manufacturers Association
- 1300 North 17th Street, Suite 900
- Rosslyn, VA 22209 [Go to Page]
- 1 Scope
- 1.1 This standard specifies the 0-10 volt control interface method and performance requirements for dimmable LED drivers, fluorescent ballasts, and dimming control units where output power is adjustable between minimum/off and maximum via a control in...
- 1.2 Applications include, but are not limited to, commercial, residential, industrial, roadway and area, and hospitality. Applicable devices include, but are not limited to, dimmable drivers and ballasts that may be internal or external to luminaires,...
- 1.3 This standard does not specify control by pulse-width modulation (PWM).
- 2 References
- 2.1 Normative References
- 2.2 Informative References
- The following informative documents are referenced, in whole or in part, as indicated in this standards publication.
- All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
- 3 Definitions
- 3.1 Controllable Driver/Ballast
- Driver/ballast that controls the power delivered to a light source between a minimum/off value and a maximum value according to a signal on its control terminals
- 3.2 Control Signal (V1,2)
- Analog DC voltage signal used to convey the necessary information to the driver/ballast for the purpose of controlling the output value
- 3.3 Control Terminals
- Connections to the controllable driver/ballast are used to apply a control signal for changing the output value NOTE: Control terminals may be provided by connectors or wires.
- 3.4 Control Unit
- A device that sets the value of the Control Signal by sinking DC current through the control wires
- Note: Examples of Control Units are dimmers and daylight controls.
- 3.5 Control Wires
- Pair(s) of electrical conductors connected to one or more driver/ballast(s) and one or more control unit(s) carrying the Control Signal
- 3.6 High Control Voltage (VControlHi)
- Control voltage that sets the LED driver response to the maximum output power with the light source in the ON state
- 3.7 Turn-On Control Voltage (Von)
- Control voltage that raises the LED driver response from the standby mode to the minimum output power
- 3.8 Low Control Voltage (VControlLo)
- Control voltage that sets the LED driver response to the minimum output power with the light source in the ON state
- 3.9 Turn-Off Control Voltage (Voff)
- Control voltage that reduces the LED driver response to no output power in standby mode
- 3.10 Maximum Output Power
- Output power of the driver/ballast to a light source with the control signal set to the maximum value
- 3.11 Minimum Output Power
- Output power of a driver/ballast to a light source with the control signal set to the value corresponding to the minimum power output greater than zero
- 3.12 Standby Mode
- Mode of operation of a driver during which it is connected to the main power, it provides no output power to the light source, and its control circuitry remains responsive to a control signal.
- NOTE: Standby mode may be called “Electronic Off.”
- 4 Control Methods
- 4.1 Voltage Specifications
- The output power value of a driver/ballast is set by the control signal (V1,2) on its control terminals. The driver/ballast shall respond to the control signal, as shown in Table 1. Manufacturer-declared values shall be specified in product literature.
- 4.2 Control Current Limits
- 4.3 Power-on and Output Value Change Time
- 4.4 Lead Wire Colors
- When lead wires are supplied with a control unit or with a driver/ballast to serve as control terminals, the wire color shall be NEMA-100 Violet for the “+V1” designation, and the wire color shall be NEMA-100 Pink for the “−V2” designation. A gray-col...
- NEMA-100 Pink and NEMA-100 Violet are defined in the NEMA-100 standard. [Go to Page]
