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46.0A

total current draw

23

device(s)
 
Larry's Vans RV-7A
Electrical Load Planning and VP-X Config
 

Aircraft Overview - Devices

The following devices represent your aircraft, and will be used to generate your personalized electrical diagram, VP-X pinout and electrical build buying guide.
Instruments/Avionics
Garmin G5
pin nameactual current drawcircuit breaker valuemin wire size VP-X pinbackup?current fault detect?switchbank preference
Garmin G5 0.5A 1.0A20g J8-8 none No Avionics Master Bank A or B
Dynon SkyView #1
SkyView #1 2.5A 5.0A20g J12-9 none No always on Bank A
notes: With backup battery
Dynon SkyView #2
SkyView #2 2.5A 5.0A20g J10-2 none No Avionics Master Bank B
notes: With backup battery
PAR100EX Audio
PAR100EX Audio 2.5A 3.0A20g J8-3 none No Avionics Master Bank A
notes: PS Engineering
Garmin 430
GNS 430 pwr 2.0A 5.0A20g J10-4 none No Avionics Master Bank B
GNS 430 com 1.5A 10.0A18g J10-3 none No Avionics Master Bank B
Dynon Transponde
SV-XPNDR-261 0.4A 3.0A20g J8-4 none No Avionics Master Bank A
PAR100EX Radio
PAR100EX Radio 2.0A 3.0A20g J12-10 none No Avionics Master Bank A
notes: PS Engineering
Dynon ADS-B
Dynon ADS-B 0.2A 1.0A20g J1-1 none No always on Bank A or B
notes: SV-ADSB-470

Lights
Nav Lights LED
pin nameactual current drawcircuit breaker valuemin wire size VP-X pinbackup?current fault detect?switchbank preference
Lights-Nav 1.5A 3.0A20g J12-1 none No Nav Lights Bank A
notes: AeroLeds Pulsar NS 90s in each wingtip plus the Suntail joined in terminal strip
Taxi Lt LED
Lights-Taxi 0.7A 5.0A20g J8-1 none No Taxi Light Bank A
notes: AeroLeds
Landing Lt LED
Lights-Landing 0.7A 5.0A20g J10-10 none No Landing Light Bank B
notes: AeroLeds
Strobe Lts LED
Lights-Strobes 8.0A 10.0A18g J10-5 none No Strobe Lights Bank B
notes: AeroLeds Pulsar NS90 in each wingtip and Suntail joined in a terminal strip

Accessories/Ignition/Other
ELT
pin nameactual current drawcircuit breaker valuemin wire size VP-X pinbackup?current fault detect?switchbank preference
ELT 0.0A 5.0A20g J10-8 none No always on Bank A or B
Dynon Pitot
Pitot Heat 10.0A 15.0A14g J10-6 none No Pitot Heat Bank A or B
Boost pump
Boost Pump 1.5A 5.0A20g J12-8 none No Boost Pump Bank A or B
Dynon AP Roll Servo
AP Roll Servo 2.5A 5.0A20g J10-7 none No always on Bank A or B
Dynon AP P Servo
AP Pitch Servo 2.5A 5.0A20g J8-5 none No always on Bank A or B
Fans
Fans 2.0A 5.0A20g J12-2 none No always on Bank A or B

Electrical System
Plane Power Pri Alt
pin nameactual current drawcircuit breaker valuemin wire size VP-X pinbackup?current fault detect?switchbank preference
Alternator Field 2.5A 5.0A20g J12-11 none No Master - Alternator/Battery Bank A
notes: This is the primary alternator field power. Planning an S700-2-10 three position switch with middle batt and up alternator and batt.


VP-X Pinout and Configuration

Currently configuring VP-X Pro, 14 volt.

All device pins assigned!

J8

 pin bank VP-X pin name power pin namecurrent draw wire sizecircuit breakerswitch current fault detect  
  1 A 5A-1 output Lights-Taxi 0.7 20 5.0 Taxi Light No
power pin notes: AeroLeds
  2 A 10A-1 output not assigned
  3 A 5A-2 output PAR100EX Audio 2.5 20 3.0 Avionics Master No
power pin notes: PS Engineering
  4 A 5A-3 output SV-XPNDR-261 0.4 20 3.0 Avionics Master No
  5 A 5A-4 output AP Pitch Servo 2.5 20 5.0 always on No
  6 B 5A-5 output not assigned
  7 B 5A-6 output not assigned
  8 B 5A-7 output Garmin G5 0.5 20 1.0 Avionics Master No

J10

 pin bank VP-X pin name power pin namecurrent draw wire sizecircuit breakerswitch current fault detect  
  1 A|B Starter Switch
  2 B 5A-8 output SkyView #2 2.5 20 5.0 Avionics Master No
power pin notes: With backup battery
  3 B 10A-2 output GNS 430 com 1.5 18 10.0 Avionics Master No
  4 B 5A-9 output GNS 430 pwr 2.0 20 5.0 Avionics Master No
  5 B 10A-3 output Lights-Strobes 8.0 18 10.0 Strobe Lights No
power pin notes: AeroLeds Pulsar NS90 in each wingtip and Suntail joined in a terminal strip
  6 B 15A-1 output Pitot Heat 10.0 14 15.0 Pitot Heat No
  7 B 5A-10 output AP Roll Servo 2.5 20 5.0 always on No
  8 B 5A-11 output ELT 0.0 20 5.0 always on No
  9 To GND block
  10 B 5A-12 output Lights-Landing 0.7 20 5.0 Landing Light No
power pin notes: AeroLeds

J12

 pin bank VP-X pin name power pin namecurrent draw wire sizecircuit breakerswitch current fault detect  
  1 A 10A-4 output Lights-Nav 1.5 20 3.0 Nav Lights No
power pin notes: AeroLeds Pulsar NS 90s in each wingtip plus the Suntail joined in terminal strip
  2 A 15A-2 output Fans 2.0 20 5.0 always on No
  3 A 10A-5 output not assigned
  4 To GND block
  5 B Flap motor enabled 5
  6 B Flap motor enabled
  7 A 10A-6 output not assigned
  8 A 5A-13 output Boost Pump 1.5 20 5.0 Boost Pump No
  9 A EFIS power output SkyView #1 2.5 20 5.0 always on No
power pin notes: With backup battery
  10 A 3A-1 output PAR100EX Radio 2.0 20 3.0 Avionics Master No
power pin notes: PS Engineering
  11 A Alternator Field Alternator Field 2.5 20 5.0 Master - Alternator/Battery
power pin notes: This is the primary alternator field power. Planning an S700-2-10 three position switch with middle batt and up alternator and batt.
  12 A 15A-3 output not assigned

J1

 pin bank VP-X pin name power pin namecurrent draw wire sizecircuit breakerswitch current fault detect  
  1 A 2A-1 output Dynon ADS-B 0.2 20 1.0 always on No
power pin notes: SV-ADSB-470
  2 A 2A-2 output not assigned
  3 Roll Trim: +2.5v enabled
  4 Roll Trim: gnd enabled
  5 Roll Trim: pos input enabled
  6 A Roll Trim: motor power enabled
  7 A Roll Trim: motor power enabled
  8 Pitch Trim: +2.5v enabled
  9 Pitch Trim: gnd enabled
  10 Pitch Trim: pos input enabled
  11 A/B Pitch Trim: motor pwr enabled
  12 A/B Pitch Trim: motor pwr enabled
  17 Flap pos input enabled
  18 Flap pos gnd enabled
  19 Flap pos +2.5v enabled
  20 Serial TX
  21 Serial GND
  22 Serial RX

J2

 pin bank VP-X pin name power pin namecurrent draw wire sizecircuit breakerswitch current fault detect  
  1 External Switch Input 1 Master - Alternator/Battery
  2 External Switch Input 2 Avionics Master
  3 External Switch Input 3 Boost Pump
  4 External Switch Input 4 Landing Light
  5 External Switch Input 5 Taxi Light
  6 External Switch Input 6 Nav Lights
  7 External Switch Input 7 Strobe Lights
  8 External Switch Input 8 Pitot Heat
  9 External Switch Input 9
  10 External Switch Input 10
  11 Starter annunciator input enabled
  12 Aux battery voltage input disabled
  14 Flap Up switch input enabled
  15 Flap Down switch input enabled
  16 Roll Left switch input enabled
  17 Roll Right switch input enabled
  18 Pitch Up switch Input enabled
  19 Pitch Dn switch Input enabled




Each column is explained below:
  • Pin: the actual pin number on the connector.
  • Bank: The VP-X Pro has two independent systems in one box. Each system is referred to as a "bank" of circuits. This column shows which bank that specific power pin is on. See Installation manual for details on determining which device goes on which bank.
  • VP-X Pin Name: Describes the function of that pin. 5A-1 for example is a 5 amp circuit and it is the first five amp circuit. 10A-3 is a 10 amp circuit and is the third 10 amp circuit.
  • Power pin name: You can give each pin a name that shows on the EFIS display.
  • Current draw: The actual current drawn by a device. It is recommended you measure the ACTUAL current draw of each device prior to installation in the aircraft using an ammeter (commonly available from a friend at no cost or from Radio Shack, Sears, and electronic supply stores for a reasonable one).
  • Wire size: the wire size you have specified to go between the VP-X and the device being powered.
  • Circuit Breaker: The maximum current allowed for that pin. You can enter any value between 1 and the limit of that pin in increments of 1A. This value is equivalent to a circuit breaker or fuse. If a load draws more than the Circuit Breaker value, that circuit will fault. If too large of a breaker value is used, then the wire may overheat or fail. If too small a value is used, then the device may fault the circuit because it draws too much current.
  • Switch: The number of the switch input (switch input 1 through 10) you have specified to control this pin. Or it can be set to 'always on' or 'always off'. Each switch input is labeled 1 through 10. You can assign multiple devices to a single switch, and conversely, a switch can control multiple devices. If you set the circuit to 'always on', it will be on anytime the VP-X is powered (i.e. the master switch is on). Multiple pins can be assignedto a single switch. You don't have to use all of the switch inputs.
  • Current Fault detect: The pin can be configured to detect a "current fault" or open circuit. When a circuit with this feature enabled is turned on and does not draw any current for 3 seconds, the circuit is faulted. You can use this to detect burned out lights, faulty boost pump, failed avionics fan, or inop heated pitot tube for example. The minimum detectable current is about 100ma, so this should be used on devices like lights, strobes and loads that draw at least 100ma of current.

VP-X Switches

The VP-X allows up to 10 switches, configured to operate any number of connected devices. The following names are suggestions, you can edit this list as required.

The trim and flap switches are wired to their own dedicated pins. The master switch is wired separately from the VP-X and directly to the master contactor. The Starter switch is wired in between the VP-X and the starter contactor. Do not include trim, flap, master, or starter switches in the items below. Please see the VP-X Installation Guide for details.

Your Switches
<-- Edit here
  • 1: Master - Alternator/Battery
  • 2: Avionics Master
  • 3: Boost Pump
  • 4: Landing Light
  • 5: Taxi Light
  • 6: Nav Lights
  • 7: Strobe Lights
  • 8: Pitot Heat
  • 9:
  • 10:
Device pins can also be assigned to "always on" or "always off" as required.

VP-X System Settings

VP-X Pro. 32 circuits, 14v or 28v, aux battery monitoring, DualBuss™ technology.

System Voltage: 14

Both systems support primary and backup alternators, two-axis trim controller, and flap controller. More information is available in the VP-X Product Description

Options

Primary Alternator
Internally regulated (Plane Power or similar)
Backup Alternator
none

More information on alternators and the options below is available in the VP-X Installation Guide

Ignition (left side)
Magneto
Ignition (right side)
Magneto

Are you installing electric flaps?
Flap circuit breaker: 5 amps
Are you installing electric roll trim?
Are you installing electric pitch trim?
Do you want to measure voltage on a second or aux battery? (VP-X Pro only, see installation guide for details)
Do you want to use the starter annunciator feature?

 

Electrical Diagram

Lights-Taxi (5.0A CB, 20awg)
not used
PAR100EX Audio (3.0A CB, 20awg)
SV-XPNDR-261 (3.0A CB, 20awg)
AP Pitch Servo (5.0A CB, 20awg)
not used
not used
Garmin G5 (1.0A CB, 20awg)
Starter Switch
SkyView #2 (5.0A CB, 20awg)
GNS 430 com (10.0A CB, 18awg)
GNS 430 pwr (5.0A CB, 20awg)
Lights-Strobes (10.0A CB, 18awg)
Pitot Heat (15.0A CB, 14awg)
AP Roll Servo (5.0A CB, 20awg)
ELT (5.0A CB, 20awg)
To GND block
Lights-Landing (5.0A CB, 20awg)
Lights-Nav (3.0A CB, 20awg)
Fans (5.0A CB, 20awg)
not used
To GND block
Flap motor
Flap motor
not used
Boost Pump (5.0A CB, 20awg)
SkyView #1 (5.0A CB, 20awg)
PAR100EX Radio (3.0A CB, 20awg)
Alternator Field (5.0A CB, 20awg)
not used
Dynon ADS-B (1.0A CB, 20awg)
not used
Roll Trim: +2.5v
Roll Trim: gnd
Roll Trim: pos input
Roll Trim: motor power
Roll Trim: motor power
Pitch Trim: +2.5v
Pitch Trim: gnd
Pitch Trim: pos input
Pitch Trim: motor pwr
Pitch Trim: motor pwr
Flap pos input
Flap pos gnd
Flap pos +2.5v
Serial TX
Serial GND
Serial RX
Starter annunciator input
not used
Flap Up switch input
Flap Down switch input
Roll Left switch input
Roll Right switch input
Pitch Up switch Input
Pitch Dn switch Input
Master - Alternator/Battery (switch)
Avionics Master (switch)
Boost Pump (switch)
Landing Light (switch)
Taxi Light (switch)
Nav Lights (switch)
Strobe Lights (switch)
Pitot Heat (switch)
(switch)
(switch)
 

Buying Guide

Some suggestion to help you source your electrical system.

Vertical Power

VP-X Pro
VP-X Pro Wiring Harness

EFIS Manufacturers

Avionics Dealers and Panel Builders

Electrical Supplies

Alternators

Builder Education Resources

Wiring Checklist

Review the following list to be sure you've included everything in your electrical system planning:



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