The ESU 51840 SignalPilot is a multi-protocol accessory decoder built mainly for switching color light signals. It has 16 outputs that drive micro bulbs or LEDs (with series resistors) directly, and because every output is a push/pull stage it works with signals wired common anode or common cathode, including Viessmann signals.
Each output can run as a steady, flashing or pulsed light, with adjustable brightness and fade times plus prototypical effects such as soft dimming, fluorescent tube, gas lantern and flicker. Outputs are grouped into signal aspects with the ESU LokProgrammer software, and up to 16 accessory addresses switch those aspects from your throttle. Motorized semaphore signals and turnout drives can be run from it too.
Specifications
Brand
ESU
Item Number
51840
UPC
4044645518403
Type
Accessory decoder for signals
Outputs
16 push/pull, up to 250 mA each
Protocols
NMRA DCC accessory, Motorola (up to 127 addresses)
Feedback
RailCom CV readback
Power
Command station, or a separate DC or AC supply up to 18V AC
Terminals
Removable screw terminal strips
Dimensions
86 x 86 x 25 mm (3.39 x 3.39 x 0.98 in)
Included
SignalPilot 51840 and instruction manual
Scale
Any scale
Condition
New
Features
16 push/pull outputs, up to 250 mA each
Drives LEDs (with series resistors) or micro bulbs directly
Works with common-anode and common-cathode signals
Steady, flashing or pulse operation on every output, with adjustable brightness and fade in and fade out
Lighting effects including soft dimming, fluorescent tube, defective fluorescent tube, gas lantern and flicker
Random switching, on and off delays, and a night mode that dims all outputs together
Two-, three-, four- and multi-aspect signals, switched by up to 16 accessory addresses
Signal aspects configured with the ESU LokProgrammer, with editable XML aspect files for unusual signals
NMRA DCC accessory decoder compatible, plus Motorola with up to 127 addresses
Programming on the main or on the programming track, with RailCom CV readback
Short circuit and overload protection on all outputs
Accepts a SwitchPilot Extension relay module for brake sections or frog polarity
Firmware updatable through the LokProgrammer as ESU adds signal types
Frequently Asked Questions
What does the SignalPilot control?Mainly color light signals. It can also run motorized semaphore signals and turnout drives.
How do I set up the signal aspects?Signal aspects are configured with the ESU LokProgrammer, sold separately. Choose the signal type in the software, write it to the decoder, and the software shows you how to wire the signal.
Does it work with my DCC system?Yes. It is an NMRA DCC accessory decoder and also supports Motorola systems. It can be programmed on the main or on the programming track, and RailCom lets you read CVs back.
Can I use LED signals?Yes, with series resistors. Signals wired common anode or common cathode both work, because every output is a push/pull stage.
Does it need its own power supply?No. It can run from your command station, or from a separate DC or AC supply up to 18V AC.
Is this the same as a SwitchPilot?No. The SignalPilot is built for signals and lighting with 16 low-current outputs. For twin-coil turnout motors, see the ESU 51830 SwitchPilot or the ESU 51831 SwitchPilot 3 Plus.
Explore More
Shop more ESU electronics, browse our DCC Accessories, or pick up wire and connectors in DCC Wiring.
WARNING: This product can expose you to a chemical, which is known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov
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