LocoDawn -- 3-Phase Locomotive Commissioning, Testing & Troubleshooting Platform

Propulsion System	Locos Tested
ALSTOM	6
MEDHA	6
SIEMENS / ABB / CGL / BHEL	10
Auxiliary systems (all types)	22

Staff tick each cable against the panel chart. Try it — tap Pass / Fail. Progress updates live and a PDF report is produced at the end (real version).

0 / 5 checked

Cable	From → To	Result

Loco DEMO-101 · Panel DEMO-A · Supervisor: Demo Supervisor · Staff: Demo Staff 1, Demo Staff 2

Every step is a plain cause → effect statement a technician can act on at the bench, with the wiring detail tucked underneath.

MANUAL OPERATETurn DEMO key-switch to ON→Demo contactor should CLOSE

wiring detail / reference

Sample only: DEMO-11 relay, sample checkpoint DEMO-CP1.

MANUAL SHORTShort DEMO current-relay contact→Signal should reach the DEMO converter box

wiring detail / reference

Sample only.

CONTINUITYVerify DEMO control supply is present→110 V DC should be available at the DEMO box

wiring detail / reference

Sample only.

Real version: every step across sheets and manufacturers, searchable by equipment, location or VCU card — without starting a session.

The Routine Test Checklist is its own group: tap the header to open the list, tap again to close. (Sample rows below — the real list has every point, split into LT and HT phases.)

For the CEE / supervisor: every loco in the shop at a glance — who is working where, how much is done, what failed, what has stalled. Tap a loco for details (staff, supervisor, report). HT Testing, Trial Run and Dispatch carry a completion date.

Loco	Overall	SB1 Panel	A Panel	Power Cable	Sequence Test	HT Testing	Trial Run	Dispatch
DEMO-101	72%	100	100	100	64%	24 Sep 26	–	–
DEMO-102	38%	100	45%	30%	–	–	–	–
DEMO-103	12%	20%	–	–	–	–	–	–
DEMO-104	100%	100	100	100	100	10 Sep 26	15 Sep 26	18 Sep 26

100 complete45% in progress45% has FAIL items20% no activity 24h+

Access is limited to admins and supervisors — not visible to clients.

Every numbered step of the testing procedure becomes one line to test — LT part and HT part separately. Pass / Fail / Skip, note a measured value, and get a PDF report. (Sample lines below.)

Real version: every step of Testing Procedure, in both the LT and HT parts, each pointing to the detailed per-wire / per-pin test where one exists.

Type a cable number, a point or a circuit to find it instantly. Try D-10 or relay.

Cable	From	To	Circuit

Real version: hundreds of cable entries, linked to panels and circuits.

Every circuit is listed the moment you open the tab — tap one for its details. (Sample circuits.)

DEMO-01 — Sample pantograph control circuit

Shows which cables, relays and panels belong to this circuit, with a view-only diagram in the real version.

DEMO-02 — Sample main breaker circuit

Linked cables: D-101, D-102. Linked panel: DEMO-A.

DEMO-03 — Sample auxiliary supply circuit

Linked cables: D-103, D-104.

Real version: every schematic circuit of the locomotive.

Describe the symptom, get likely causes and what to check first. Try breaker or fan.

Real version: fault codes and symptoms from field troubleshooting.

Which VCU card and pin carries which signal, and what value to expect. (Sample signals.)

Signal	Card	Pin	Expected
DEMO-PANTO-UP	DEMO-BEAR 1	A3	110 V when raised
DEMO-VCB-CLOSED	DEMO-BEAR 2	B7	110 V when closed
DEMO-OIL-TEMP	DEMO-AEA 1	C2	4–20 mA analog

Real version: VCU-1 and VCU-2 I/O signals, per card.

Every abbreviation used in the locomotive drawings, in plain words. Try VCB or BUR.

Real version: full verified abbreviation list.

LocoDawn -- 3-Phase Locomotive Commissioning, Testing & Troubleshooting Platform

See LocoDawn in 17 slides

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Tested in the field, not just on paper

Ways into the data

📡 Cable Index

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⚡ Circuits

🚨 Fault Lookup

Built for every major make in service

Built for the people doing the work

Railway Testing & Maintenance Staff

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