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GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire) GSCM-MINI-D

ATKINSON ELECTRONICS, INC. REV 07/08

Web Site: www.atkinsonelectronics.com Distributed by:

FEATURES & APPLICATIONS

vv Inexpensive 2 wire to 3 wire start controller for

electric start 3 wire DIESEL & Gas generators.

vv Optimized for use with Outback Invertors.

vv Supports three types of 3 wire generator control

(momentary, maintained, ignition).

vv Fixed Crank time, Over and Under Hz shutdown,

and optional battery charging thresholds.

vv Maximum Auto-start Run Time Limit (6 hours)

vv Remote Run and Fault indication included.

vv Totally sealed for harsh environment operation

DESCRIPTION

The GSCM-mini-D is a micro-processor based generator

start-stop module, designed to auto start-stop high speed gas

and diesel generators needing a 3 wire connection from a 2

wire 12 volt manual start command. It automatically

disconnects the starter when a minimum generator AC Hz.

output is measured, it can monitor the generator’s output,

shutting it down if either an over or under Hz condition is

detected. LEDs are flashed to indicate the cause of the

shutdown. Manually resetting the GSCM-mini-d (by removing

the power), removes the lockout and allows the generator to

restart if called to do so. The GSCM-mini-D is powered by

12VDC from the generator battery, and can monitor the battery

voltage and start the generator to charge it’s own battery. All

Thresholds are fixed. The GSCM-mini-D is a limited function

controller, part of the GSCM family. If adjustability is required

use the GSCM full function Generator Start Control Module.

THREE MODES OF RELAY OPERATION

The GSCM-mini-D’s two relay contacts can be configured for

three types of three wire start/stop hook-up configurations;

momentary, maintained and Ignition for Hondas, Onans,

Yamahas, and other brands of generators. This is

accomplished with an optional jumper on terminal 6.

Momentary Start Contact Option #1, terminal 6, has No

Connection. The GSCM-mini-D defaults to a momentary crank battery systems. If adjustability is required then use the GSCM

operation for those generators that use two momentary push

button switches to start and stop the generator. K2 energizes

for 10 seconds for diesel glow plug operation then, K1 cranks

the Starter. On shutdown, K2 momentarily grounds the

magneto. See Section 1 for operation description.

Maintained Start Contact Option #2, terminal 6, is

grounded. The GSCM-mini-D changes to a maintained start

operation for generators that use a maintained closed contact

to start (K1). The generator is stopped by opening K1 and

closing K2 contact, momentarily grounding the magneto. See

Section 2 for operation description.

Ignition Key Switch Start Contact Option #3, terminal 6, is

connected to B+ (12VDC). The GSCM-mini-D simulates an

automobile ignition switch, K2 closes, maintains a closed

ignition contact for the generator to run and K1 closes

momentarily to crank the starter motor. and de-energizes

when the start signal is removed. The K1 relay operates in a

momentary crank configuration. See section 3 for operation

description.

LED INDICATION DESCRIPTION

The GSCM-mini-D has six indication LEDs. The Start LED,

blinks every 5 seconds to indicate ready for a start signal, blinks

every 2.5 sec. to indicate running in Auto Start mode, ‘On’

continuously indicates running in Manual Start mode.

The Generator Hz LED, blinks to indicate over/under Hz Fault

and Start Failure do to Maximum crank attempted. A slow blink

indicates an under Hz condition, a fast blink indicates an over Hz

condition. ‘On’ continuously indicates AC present in a non run

condition. A double blink indicates a start failure condition. The

Run LED, ‘On’ continuously indicates a valid Run signal from the

generator. The Fault LED,‘On’ indicates a Fault condition has

occurred and GSCM is in lockout and must be reset. The K1

and K2 LEDs indicate the relay status.

OPERATIONAL THRESHOLDS

The GSCM-mini-D has fixed operational thresholds. Those are:

Crank delay, Maximum Crank time, Crank Hz. Disconnect,

Under Speed Shutdown, Over Speed Shutdown, Max auto start

run time, and auto detects the Battery voltage to determine the

auto start and auto stop threshold values for 12V, 24V, and 48V

full function control module.

Crank delay: 5 seconds

Maximum Crank: 20 seconds

Crank Disconnect: 45Hz

Under Speed Shutdown: 55Hz

Over Speed Shutdown: 65Hz

Max Auto Start Run time: 6Hours

Auto Start/Stop

Thresholds: Start Stop

12V system 11.5V 13.8V Standard

24V system 23.0V 27.6V Call for option

48V system 46.0V 55.2V Call for option

Relay Configuration: Open input = Momentary Crank

(TERMINAL 6) Grounded input = Maintained Crank

B+ (12VDC) input = Ignition & Crank

Fault Detection: Start Failure, (3 attempts)

Over Hz condition (10 seconds)

Under Hz condition (10 seconds)

Max Run time Auto restart within 30m

Generator stops due to its own fault condition

Summary of content (9 pages)

PAGE 1
GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire) GSCM-MINI-D FEATURES & APPLICATIONS v v v v v v v Inexpensive 2 wire to 3 wire start controller for electric start 3 wire DIESEL & Gas generators. Optimized for use with Outback Invertors. Supports three types of 3 wire generator control (momentary, maintained, ignition). Fixed Crank time, Over and Under Hz shutdown, and optional battery charging thresholds. Maximum Auto-start Run Time Limit (6 hours) Remote Run and Fault indication included.
PAGE 2
GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire) GSCM-MINI-D GSCM-mini-D WIRING DIAGRAM AND CONTROLLER CONFIGURATION ATKINSON ELECTRONICS, INC. Web Site: www.atkinsonelectronics.
PAGE 3
GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire) GSCM-MINI-D OPTION #1 MOMENTARY START CONTACT - TYPICAL GENERATOR W/ STARTER CONTROL BOX The GSCM-mini-D option #1 provides the same momentary glow plug operation for those 3 wire diesel applications where the key switch or off button is pressed for 10 seconds energizing the glow plugs, then the start button is pressed starting the generator.
PAGE 4
GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire) GSCM-mini-D MOMENTARY STARTING SEQUENCE (Relay Option #1) GSCM-MINI-D SECTION - 1 The GSCM-mini-D indicates that it is ready to receive a start signal by blinking the start LED once every 5 seconds. The CONFIGURATION terminal 6 has NO connection, configuring the GSCM-mini-D for momentary start sequence.
PAGE 5
GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire) GSCM-mini-D MAINTAINED STARTING SEQUENCE continued 4. 5. 6. 7. 8. 9. GSCM-MINI-D SECTION - 2 If the generator starts but shuts down after a few seconds due to a fuel problem, etc. The GSCM-mini-D goes thru it’s Shutdown Routine then re-enters “Ready” mode after a 60 second delay. During this delay the start LED will blink rapidly.
PAGE 6
GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire) GSCM-mini-D WITH A MANUAL/OFF/AUTO SWITCH OPTIONS GSCM-MINI-D SECTION - 4 The Manual start signal is created by connecting terminal 5 (man. Start) to terminal 3 (B+12VDC) through a Power/Reset Switch (see GSCM-mini-D wiring diagram). It may also be generated by an Outback Inverter using the AUX+/- connections on the remote terminal block. The Outback provides a switched +12VDC signal for the GSCM-mini-D’s manual start input.
PAGE 7
GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire) GSCM-MINI-D GENERATOR EMERGENCY SHUTDOWN WITH THE GSCM-mini-D SECTION - 7 The GSCM-mini-D Generator Start Stop module is NOT AN EMERGENCY SHUTDOWN DEVICE!! If the manual start signal is removed the generator will go through a normal shutdown which may take up to 15 seconds to completely shutdown the generator. A RECOMMENDED EMERGENCY SHUTDOWN SOLUTION is to install a separate “Kill” switch and label it as such.
PAGE 8
GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire) GSCM-MINI-D APPLICATION 2 - REMOTE RV GENERATOR START CONSOLE REPLACEMENT The GSCM-mini-d can be used to replace a typical remote generator control console, that is mounted on the dash of a motorhome. Instead of a large console and cable, use a small 16 to 18 gauge 4 wire signal cable, an on-off switch with built in light and a separate 12vdc fault light. When the remote switch is turned on, the GSCMmini-d starts the generator.
PAGE 9
GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire) GSCM-MINI-D LIMITED WARRANTY Atkinson Electronics, Inc. gives this express warranty (along with extended warranty endorsements, where applicable) in lieu of all other warranties, express or implied, including (without limitation), warranties of merchantability and fitness for a particular purpose. This constitutes Atkinson Electronics, Inc.'s sole warranty and obligation with regard to our products as well as the Customer's sole remedy.