Caterpillar / Woodward Load Sharing Module | P/N 309-1583 / 9907-838

Caterpillar / Woodward Load Sharing Module | P/N 309-1583

PRODUCT OVERVIEW
The Caterpillar 309-1583 is a load sharing module (Woodward 9907-838). Application: Generator paralleling / isochronous load sharing (24 VDC). It cross-references to 9905-175 (related Cat/Woodward LSM).
The Load Sharing Module (LSM) lets two or more generator sets run in parallel and share the kW load in proportion. It compares each set's load with the other sets over the load-sharing lines and biases the engine speed control so the sets share load isochronously, including soft loading and unloading when a set is added or removed. It runs on 24 VDC.

PART NUMBER IDENTITY
Primary Part Number: 309-1583
Also listed as: 3091583 / 309 1583 / 9907-838
Product Type: Load Sharing Module (Woodward 9907-838)
Brand / Manufacturer: Caterpillar
Condition: New (unused)

CROSS-REFERENCE AND INTERCHANGE
9905-175 - related Cat/Woodward LSM

APPLICATIONS AND FITMENT
Generator paralleling / isochronous load sharing (24 VDC) - generator control
Always confirm against the part number on your existing unit or your engine / machine serial number.

TECHNICAL SPECIFICATIONS
Catalogue description: Load Sharing Module
Supply: 24 VDC
Function: Load sharing between paralleled gen sets

COMMON FAILURE SYMPTOMS
Generators oscillate when paralleled — load swings between units without settling
Reactive load sharing fault — one generator absorbs kVAr load disproportionately
Active power sharing unbalanced — one unit overloaded while another runs light
Generator set fails to synchronize before paralleling — no synchronization reference
EMCP panel displays load sharing or synchronization fault code
Generator trips off the bus immediately after paralleling

SET-UP
Calibrate the LSM (load gain, ramp rates) for your gen sets after installation.

INSTALLATION NOTES
The LSM connects to the generator set governor and control system. Droop settings and load sharing gain parameters must be calibrated after installation under rated load using a power analyzer. All paralleled generators must use compatible LSM firmware and settings for stable parallel operation.

CONDITION AND WARRANTY
Condition: New (unused)
An unused unit. Packaging can vary by batch, and we can send photos of the actual unit before dispatch. Covered by our 365-day warranty and 30-day money-back guarantee.
Core / exchange: outright price - no core charge and no core return required.

BEFORE YOU ORDER
1. Compare the part number on your existing unit with 309-1583 or a cross-reference listed above.
2. Send us a clear photo of your old part's label and your engine / machine serial number - we confirm the match before you buy.
3. Need more than one, or a quote for your fleet? Ask us for a bundle price.

FREQUENTLY ASKED QUESTIONS
Is the 309-1583 new or used?
New (unused). An unused unit. Packaging can vary by batch, and we can send photos of the actual unit before dispatch.
What part numbers does the 309-1583 cross-reference to?
9905-175 - see the cross-reference list above for how each number relates.
Is there a core charge?
No. The price is outright - no core charge and no core return required.
How fast is shipping?
FREE worldwide express shipping (DHL / FedEx / EMS) with tracking, dispatched from Sharjah, UAE within 1–4 business days of cleared payment.
What if it is the wrong part?
You are covered by our 30-day money-back guarantee (unit returned unused and uninstalled) and a 365-day replacement warranty.

ORDER BENEFITS
FREE worldwide shipping is included with every OrderECM product. Your order is also backed by a 30-day money-back guarantee and a 365-day replacement warranty.

ALSO SEARCHED AS
309-1583, 3091583, 309 1583, 9907-838, CAT 309-1583, 309-1583 Load Sharing Module, 9905-175, Woodward LSM, load sharing module