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Atkinson GSCM 12-24 Generator Start Control Module

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  • GSCM
Atkinson Electronics
MSRP: $485.40
$402.35 (You save $83.05)
SKU: ALG-020-06341
Condition: New
Weight: 1.25 LBS
Shipping: Calculated at checkout

 Product Description

Atkinson Electronics Generator Start Controller Module - GSCM

Atkinson Electronics, Generator Start Controller Module, 12-24V, GSCM

The GSCM is a micro-processor based generator starting controller that receives either automatic or manual start commands and starts a generator, disconnects the starter when a minimum generator frequency output is measured and monitors the generator operation, shutting it down if one of several fault conditions is detected. LEDs are flashed to indicate the cause of the shutdown. Manually resetting the GSCM removes the lockout and allows the generator to restart if called. The GSCM is powered by 12 to 24V DC from a battery bank and will start generators for 12 to 48V systems. For 48V systems the GSCM must be powered by a 24V or less tap on the 48V battery bank.

Adjustment for the timing controls is done during the initialization period using a single turn potentiometer and two push button switches on the front of the GSCM unit. An 'Advance’ button allows the user to move through the different timing parameters and the ‘Change/Store’ button allows the user to change and then store the new setting. LEDs indicate which setting is being addressed and the stored value can be read on the test points. For example: a Crank Delay voltage setting of 2.5V is 50% of the 0 to 60 second timing range or 30 seconds (see Adjustment Chart in Section-8). Timing values are stored in memory regardless of power removal until changed.

The GSCM comes factory pre-set: Crank Delay @ 5s, Maximum Crank @ 15s, Load Transfer Delay @ 60s, Load Pre-Off Delay @ 90s, Battery Cut-In Volt. @ 11.5V, Battery Cut-Out Volt. @ 13.5V, Run/Crank Disconnect @ 30Hz, Under Speed Shutdown @ 55Hz, Over Speed Shutdown @ 65Hz, and 30 Day Exercise Runtime @ 0 (deactivated). The GSCM provides a 30 day exercise function which can be synchronized with a photovoltaic input to only start each 30 day period at the beginning of the solar charge day. A user supplied DC relay can be energized during the 30 day generator exercise to override a battery charger and allow the battery bank to equalize by charging the batteries above the normal charger cut-off point during the exercise period. Besides generators, the GSCM can be used to start and control gas/propane or diesel driven pumps.


  • Highlights - Automatic starting, load transfer and shutdown of gas/diesel generators, especially for off-grid uses. Automatic adjustable voltage set-points for generator battery charging applications, 0-60VDC. Works with 12, 24 or 48V battery systems. Provides fault shutdown for low oil pressure, high temperature, under-speed or over-speed conditions. All sequences have adjustable time periods. 30 day exercise with or without load, battery equalize function available. Relay driver for emergency shutdown and 30 day exercise remote indication. 12 hour maximum run-time (with override) for automatic starting applications. Totally sealed for harsh environment operation.


General Information  
Manufacturer: Atkinson Electronics
Product Line:
Atkison Accessory
Model ID:
Certifications and Safety Ratings: ce.gif


Mechanical Data
Technology: Generator Start Module
5.50 x 3.30 x 1.50 inches
Weight: 1.25 lbs
Mounting: 2 Screws Through Tabs
Connections: Quantity (28) 1/4" Spade Terminals
On-Off Inputs: Grounded Input = On Condition; Open Input = Off Condition
Ambient Temperature: -30°C to +70°C


Electrical Data
Power: 12V to 30V DC or 24VAC; Quiescent Current < 10mA; Relay Current < 25mA Each @12V
Voltage Inputs: 0-60 VDC
Frequency Input: 120-300V AC 0-100 Hz
Output Ratings: Quantity (5) 10 Amp 28VDC, 240VAC Relay Contacts; Quantity (2) Open Collector NPN Transistors, Maximum 200mA Each
Fault Detection: 5 Conditions at Lock Out Generator
Maximum Runtime: 12 Hours in Automatic Start (May Be Overridden)
Adjustments Quantity (1) Single Turn Potentiometer (0-5 VDC = Adjustment Range)
Crank Delay: 0 to 60 Seconds
Maximum Crank:
0 to 60 Seconds
Load Transfer Delay: 0 to 60 Seconds
Load Pre-Off: 0 to 120 Seconds
Battery Charge:
Cut-In Voltage: 0 to 60VDC; Cut-Out Voltage: 0 to 60VDC
Under Speed Shutdown: 15 to 75 Hz
Over Speed Shutdown: 15 to 75 Hz
Rank / Crank Discount: 15 to 75 Hz
30 Day Exercise Runtime: 0 to 1 Hour


Document Type
logo-adobe-pdf-2.jpgAtkinson Electronics GSCM Specs Specifications
logo-adobe-pdf-2.jpgAtkinson Electronics GSCM Diagram Diagram
Warranty 2 Year Limited Warranty (See Specifications Sheet)


Terms & Conditions
Shipping: Shipping Policy
Returns: Returns Policy
Payments: We accept: Visa, MasterCard, Discover, and American Express. We also accept checks, direct deposit and wire transfers for large orders.

Atkinson Electronics - Atkinson GSCM 12-24 Generator Start Control Module
Price: 402.35
Condition: new
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 Warranty Information

Warranty: 2 Year Limited Warranty (See Specifications Sheet)

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