PickettPanel Lite — Free Electrical Control Circuit Trainer

Power

L1 Rail

+ve / Hot

L2 Rail

-ve / Neutral

L3 Rail

400V line

3-Phase Supply

L1 L2 L3 N PE

Earth Bar

Fuse

Dbl-click: rating (A)

Disconnect

Rotary isolator

MCB

Dbl-click: rating (A)

3-Pole MCB

Dbl-click: rating (A)

Transformer

Control xfmr (24V)

Terminal Block

DIN pass-through

Inputs

PB Norm Open

NO Momentary

PB Norm Closed

NC Momentary

E-Stop

NC Latch

Selector 2-pos

Maintained

Selector 3-pos

OFF / MAN / AUTO

Control

Control Relay

Coil

CR Contact NO

Relay N/O

CR Contact NC

Relay N/C

Contactor

3-phase coil

Contactor Aux NO

KM N/O contact

Contactor Aux NC

KM N/C contact

Overload Relay

95-96 NC · 97-98 NO

Timers

Timer ON-delay

TON — dbl-click preset

Timer OFF-delay

TOF — dbl-click preset

Drive

VFD Drive

3-ph in · U V W out · dbl-click rating

Motor 3-Phase

U V W · dbl-click FLC

PLC

PLC Block

Double-click to program

Custom

Custom Block

PCB / device — dbl-click to define

Outputs

Pilot Light Green

Run / Auto

Pilot Light Red

Fault / Stop

Pilot Light Amber

Warning / Manual

Pilot Light White

Power on

Load

Dbl-click: 230/400V

Buzzer / Horn

Audible alarm

Sequence Log ▲ open

No events yet — switch to Simulate and interact with the circuit.

SYMBOLS

Circuit Status

ModeEDIT

Components0

Wires0

How to use

Drag components onto canvas.

Click a terminal dot to start a wire, click another to connect.

Double-click a component to label it.

R rotates the selected component 90° — wires stay connected.

DEL removes selected item.

⚠ Terms of Use & Disclaimer

PickettPanel is a training tool for learning and practising electrical control circuits. It is not a substitute for the judgment of a qualified, licensed electrician or engineer, and circuits built in it are not certified or guaranteed to be safe or compliant for real installations.

Use it to learn, practise fault finding and try out ideas. Anything you build for real is your responsibility, and must be verified, reviewed and made code-compliant. Before any real circuit is built, energized, or relied upon:

Have the design reviewed by a licensed electrician or engineer.
Verify compliance with the National Electrical Code (NEC), IEC 60617, NFPA 79, and all applicable local codes and the Authority Having Jurisdiction (AHJ).
Follow proper lockout/tagout and electrical safety practices at all times.

PICKETTECH and PickettPanel provide this software "as is," without warranty of any kind, and disclaim all liability for injury, property damage, code violations, or other loss arising from the use, misuse, or output of this tool, to the fullest extent permitted by law.

Feedback: use the Feedback button — anonymous, no email needed. Or reach me at pickettech.dev@gmail.com.

PICKETTPANEL LITE

Free Edition

Learn industrial control circuits by building, running and fault-finding them.

Version 
Standard IEC 60617 / ANSI NFPA 79
Platform Browser — no install required
File format .pickett (JSON)

Coming in PickettPanel Pro

Testing tools (safe isolation, insulation resistance, continuity, phase rotation) · fault-finding scenario packs · more components, including star-delta and soft starters · production-style drawings.

Build . Run . Fault-find

PICKETTPLC — Ladder Editor

Inputs

Outputs

How to program

Pick a tool, then click the rung to place it.

Click an element to select it.
Double-click (or Edit) to change its address or preset.
Delete key (or button) removes it. Click a rung number (R1…) to select the whole rung.

NO / NC — read an input (I0), an output (Q0, for a seal-in), a timer (T0) or a counter (C0)
Coil — ON while the rung is true
Latch — turns an output ON and keeps it ON
Unlatch — turns a latched output OFF
Timer — T0 goes ON after the rung has been true for its preset. Anything after the timer on the same rung (e.g. a coil) turns on only when it's done

Live Monitor — shrinks this editor to a small window so you can run the circuit and watch the ladder at the same time

▯ CUSTOM BLOCK EDITOR

BLOCK LABEL

INPUTS (left side)

One terminal per line

OUTPUTS (right side)

One terminal per line

LOGIC (one rule per output — optional)

OUT = IN (follow) · OUT = NOT IN (invert)
OUT = A AND B · also OR, XOR, NAND, NOR · NOT before any input: A AND NOT B
OUT = IN > 100 · compares the input voltage (to 0V / N): > < >= <= == (== is within 5%)
add AFTER 3 to any rule for an on-delay in seconds. Outputs without a rule follow the input on the same row.

Wires already connected to renamed terminals will need to be reconnected. Removing a terminal deletes its wires.

⬇ Export Schematic PDF

Standard

IEC 60617European / ISO

ANSI / NFPA 79North American

Drawing colours

BlackStandard — prints and copies cleanly

Colour (training)Red L1, blue N, green PE

Project / Title

Drawing No.

Company / Author

Revision

System / Description

Voltage

📐 Schematic will auto-layout your circuit into standard ladder diagram format with proper IEC symbols, reference designators, and wire numbers.

Thanks — that's genuinely useful.

Welcome back

Result