Magnum Energy ME-AGS-N User manual

Owners Manual
Version 5.0
ME-AGS-N
Automatic Generator Start
for Network Versions
For use with the following remote controls:
ME-RC Revisions 1.5  2.612
ME-ARC Revisions 2.0  2.4
ME-RTR Revisions 2.1  2.2

© 2012 Magnum Energy, Inc. i
Disclaimer of Liability
Since the use of this manual and the conditions or methods of installation,
operation, use and maintenance of the ME-AGS-N (Auto Generator Start -
Network) is beyond the control of Magnum Energy, Inc., this company does
not assume responsibility and expressly disclaims liability for loss, damage or
expense, whether direct, indirect, consequential or incidental, arising out of
or anyway connected with such installation, operation, use, or maintenance.
Note as well that while every precaution has been taken to ensure the
accuracy of the contents of this manual, the speci cations and product
functionality may change without notice. Magnum Energy, Inc. assumes no
responsibility for errors or omissions.
Restrictions on Use
The ME-AGS-N may only be used in life-support devices or systems with the
express written approval of Magnum Energy, Inc. Failure of the ME-AGS-N
can reasonably be expected to cause the failure of that life-support device
or system, or to affect the safety or effectiveness of that device or system.
If the ME-AGS-N fails, it is reasonable to assume that the health of the user
or other persons may be endangered.
Copyright Notice
Copyright © 2012 by Magnum Energy, Inc. All rights reserved. Permission to
copy, distribute, and/or modify this document is prohibited without express
written permission by Magnum Energy, Inc.
Document Information
Description  ME-AGS-N Owners Manual
Part Number and Revision  64-0039 Rev A
Date Published  March 2012
This manual is printed without color for cost savings. However, this en-
tire manual is available for download under the Document Library tab at
www.magnumenergy.com with many of the diagrams available in color.
Contact Information
Magnum Energy, Inc.
2211 West Casino Rd.
Everett, WA 98204
Phone: [phone]
Fax: [phone]
Web: www.magnumenergy.com
Statement of Appreciation
From all of us at Magnum Energy 
Thank you for purchasing this AGS module (ME-AGS-N).
We understand that you have many purchasing options in the marketplace,
and are pleased that you have decided on a Magnum Energy product. This
AGS module was proudly assembled and tested in the United States in our
Everett, Washington, facility.
At Magnum we are committed to providing you with quality products and
services, and hope that your experience with us is pleasant and professional.
Magnum Energy® is a registered trademark of Magnum Energy, Inc.

ii © 2012 Magnum Energy, Inc.
Product Safety Alerts
WARNING:
 All electrical work must be performed in accordance with local,
state, and federal electrical codes.
 This product is designed for indoor/compartment installation  do
not expose to rain, snow, moisture, or liquids of any type.
 Use insulated tools to reduce the chance of electrical shock or
accidental short circuits.
WARNING: Severe personal injury, death, and equipment dam-
age can result from operating the generator in a garage, building,
or con ned space. The generator produces dangerous fumes when
it is running. If the generator is installed in an RV, disable the AGS
system to prevent the generator from starting when the RV is in a
garage, building, or a con ned space.
WARNING: ENGINE EXHAUST GASSES CAN BE DEADLY. Install a reli-
able carbon monoxide alarm in your vehicle, building, or home before
starting a generator or enabling the AGS. All engine exhaust contains
carbon monoxide: an odorless, colorless gas that can cause severe
personal injury or death. Symptoms of CO poisoning include:
 Dizziness, headache or throbbing temples
 Weakness or muscular twitching
 Sleepiness or confusion
 Nausea or vomiting
If you experience any of these symptoms, get to fresh air immediately.
If symptoms persist, seek medical attention. Shut down the generator
and do not operate until the unit is inspected and repaired.
WARNING: With an Automatic Generator Starting system installed;
exhaust CO, electrical shock, and moving parts hazards are pos-
sible due to unexpected engine-generator starting. Disconnect the
engine-generator starting battery cables or the AGS connection to
the engine-generator before working on the generator or any other
electrical system powered by the generator.
Important Safety Instructions
This manual contains safety instructions that must be followed during the
installation and operation of this product. Read all instructions and safety
information contained in this manual before installing or using this product.
Safety Symbols
To reduce the risk of electrical shock,  re, or other safety hazard, the fol-
lowing safety symbols have been placed throughout this manual to indicate
dangerous and important safety instructions.
WARNING: Symbol indicates that failure to take a speci ed action
could result in physical harm to the user.
CAUTION: Symbol indicates that failure to take a speci ed action
could result in damage to the equipment.
Info: Symbol indicates information that emphasizes or supplements
important points of the main text.
Remedy: Symbol provides possible solutions for related issues.

© 2012 Magnum Energy, Inc. iii
List of Contents
1.0 Introduction .............................................................................1
1.1 ME-AGS-N Module..................................................................... 1
1.2 ME-AGS-N System Requirements ................................................ 2
1.3 ME-AGS-N Components ............................................................. 2
2.0 Installation............................................................................... 4
2.1 Installation Requirements .......................................................... 4
2.2 Required Materials and Tools ...................................................... 6
2.3 Mounting Procedure .................................................................. 6
2.4 Connecting the Cables ............................................................... 7
2.5 ME-AGS-N Terminal Block Wiring Connections ............................. 10
2.6 Common Generator Wiring Diagrams ......................................... 15
2.7 Warning Label ........................................................................ 15
3.0 ME-AGS-N Module Setup ......................................................... 19
3.1 Con guring the Internal ME-AGS-N Settings ............................... 19
4.0 ME-AGS-N Module Functional Tests.........................................21
4.1 Power-up Test ........................................................................ 21
4.2 Generator Wiring Test.............................................................. 21
5.0 ME-AGS-N Module Operation...................................................22
5.1 ME-AGS-N Module TEST Pushbutton .......................................... 22
5.2 ME-AGS-N Module LED Indicators.............................................. 22
6.0 ME-AGS-N Module Troubleshooting.........................................23
6.1 Using the ME-AGS-Ns LED Indicators ........................................ 23
6.2 Generator Starting/Running Troubleshooting............................... 24
7.0 Using a Remote with the ME-AGS-N ........................................26
7.1 AGS to Inverter Compatibility ................................................... 26
7.2 Software Differences Between AGS Revisions.............................. 27
8.0 Using the ME-RC Remote ........................................................ 28
8.1 ME-AGS-N Setup using the ME-RC............................................. 28
8.2 ME-AGS-N Functional Tests using the ME-RC............................... 33
8.3 ME-AGS-N Operation/Monitoring using the ME-RC ....................... 34
8.4 Enabling the ME-AGS-N using the ME-RC ................................... 36
8.5 Starting and Stopping the Generator using the ME-RC ................. 36
8.6 ME-AGS-N Menu Map using the ME-RC....................................... 37
9.0 Using the ME-ARC Remote ......................................................39
9.1 ME-AGS-N Setup using the ME-ARC ........................................... 39
9.2 ME-AGS-N Functional Tests using the ME-ARC ............................. 52
9.3 ME-AGS-N Operation/Monitoring using the ME-ARC...................... 53
9.4 Enabling the ME-AGS-N using the ME-ARC.................................. 56
9.5 Starting and Stopping the Generator using the ME-ARC................ 56
9.6 ME-AGS-N Menu Map using the ME-ARC ..................................... 58

iv © 2012 Magnum Energy, Inc.
List of Tables
Table 3-1, Gen Type Settings............................................................. 20
Table 6-1, ME-AGS-N Module Troubleshooting Guide............................. 23
Table 7-1, AGS Compatibility Matrix Chart........................................... 26
Table 7-2, AGS Revision Differences ................................................... 27
Table 8-1, ME-RC Autostart/Autostop Matrix........................................ 28
Table 8-2, Software Differences Between ME-RC Revisions .................... 29
Table 8-3, Battery AmpHrs Capacity to Suggested Gen Run Time ........... 30
Table 9-1, ME-ARC Autostart/Autostop Matrix ...................................... 40
Table 9-2, Software Differences Between ME-ARC Revisions ............. 40-41
Table 10-1, ME-RTR Autostart/Autostop Matrix .................................... 62
Table 11-1, AGS Remote Operational Statuses ................................ 84-85
Table 11-2, AGS Remote Start Statuses .............................................. 86
Table 11-3, AGS Remote Fault Statuses .............................................. 87
List of Contents (cont.)
10.0 Using the ME-RTR Router......................................................61
10.1 ME-AGS-N Setup using the ME-RTR ......................................... 61
10.2 ME-AGS-N Functional Tests using the ME-RTR ........................... 73
10.3 ME-AGS-N Operation/Monitoring using the ME-RTR .................... 75
10.4 Enabling the ME-AGS-N using the ME-RTR ................................ 78
10.5 Starting and Stopping the Generator using the ME-RTR .............. 78
10.6 ME-AGS-N Menu Map using the ME-RTR ................................... 80
11.0 ME-AGS-N Remote Status Messages ..................................... 84
11.1 AGS Remote Operational Statuses ........................................... 84
11.2 AGS Remote Start Statuses .................................................... 86
11.3 AGS Remote Fault Statuses .................................................... 87
11.4 General Notes....................................................................... 88
12.0 ME-AGS-N Remote Troubleshooting...................................... 89
12.1 AGS Fault Message Screens for Magnum Remotes ..................... 89
12.2 Resolving Operational Statuses ............................................... 90
12.3 ME-AGS-N Faults using your Remote........................................ 90
13.0 Appendix ..............................................................................94
13.1 Other Accessories and Equipment............................................ 94
14.0 Limited Warranty.................................................................. 95
14.1 How to Receive Repair Service ................................................ 96

© 2012 Magnum Energy, Inc. v
List of Figures
Figure 1-1, Components of the ME-AGS-N Module .................................. 3
Figure 1-2, Remote Temp Sensor Cable ................................................ 3
Figure 2-1, ME-AGS-N System Diagram ................................................ 5
Figure 2-2, ME-AGS-N Dimensions ....................................................... 6
Figure 2-3, Remote Temp Sensor Connection ........................................ 7
Figure 2-4, Network Communication Cable............................................ 7
Figure 2-5, Connecting the AGS to a Magnum Inverter (Small) ................ 8
Figure 2-6, Connecting the AGS to a Magnum Inverter (Large) ................ 8
Figure 2-7, Multiple Network Devices  Star Configuration ...................... 9
Figure 2-8, Multiple Network Devices  Daisy Chain Configuration ............ 9
Figure 2-9, Connected Devices at the Same Potential ........................... 10
Figure 2-10, Generator Run Sense Options.......................................... 12
Figure 2-11, Wiring to the ME-AGS-N Modules Terminal Block ............... 14
Figure 2-12, Warning Label ............................................................... 15
Figure 2-13, Two-wire Control Type Generators.................................... 16
Figure 2-14, Three-wire Momentary Control Type Generators ................ 17
Figure 2-15, Three-wire Maintain Control Type Generators .................... 18
Figure 3-1, Inside the ME-AGS-N Module ............................................ 19
Figure 3-2, DC Voltage Settings......................................................... 19
Figure 5-1, ME-AGS-N Front Panel Controls and Indicators .................... 22
Figure 8-1, ME-RCs AGS Configuration Access Buttons ......................... 28
Figure 8-2, AGS Menu Maps in ME-RC Remote (Section 1) .................... 37
Figure 8-3, AGS Menu Maps in ME-RC Remote (Section 2) .................... 38
Figure 9-1, ME-ARCs AGS Configuration Access Buttons ....................... 39
Figure 9-2, AGS Menu Maps in ME-ARC Remote (Section 1)................... 58
Figure 9-3, AGS Menu Maps in ME-ARC Remote (Section 2)................... 59
Figure 9-4, AGS Menu Maps in ME-ARC Remote (Section 3)................... 60
Figure 10-1, ME-RTRs AGS Configuration Access Buttons...................... 61
Figure 10-2, AGS Menu Maps in ME-RTR Router (Section 1) .................. 80
Figure 10-3, AGS Menu Maps in ME-RTR Router (Section 2) .................. 81
Figure 10-4, AGS Menu Maps in ME-RTR Router (Section 3) .................. 82
Figure 10-5, AGS Menu Maps in ME-RTR Router (Section 4) .................. 83
Figure 12-1, ME-AGS-N Fault Message  RC and ARC Screens ............... 89
Figure 12-2, ME-AGS-N Fault Message  RTR Screens........................... 89

1 © 2012 Magnum Energy, Inc.
1.0 Introduction
1.0 Introduction
Congratulations on purchasing your ME-AGS-N. The ME-AGS-N is the net-
work version of Magnum Energys Automatic Generator Start (AGS) mod-
ules. This AGS is set up and operated via a Magnum Energy inverter and
remote control (i.e., ME-RC, ME-ARC, or ME-RTR). Using the AGS, your gen-
erator can automatically start and stop based on the following conditions:
• Battery Voltage: Continuously monitors battery voltage. Autostarts
the generator when the battery voltage falls to a certain level, and
autostops the generator when the battery voltage either rises to a high-
er level or goes into the Float Charge stage  depending on the remote
control.
• Time of Day: Starts and stops the generator daily based on selectable
start/stop times (determined by the time on the remote controls clock).
• Inverter Load Amps: Starts/stops the generator based on the loads
powered by the inverter (assists inverter with larger loads).
Note: Only applicable to MS-PAE and MS-PE Series Magnum inverters.
• Rising Temperature: Continuously monitors the temperature of the
surrounding area and automatically starts the generator whenever pow-
er is needed to run an air conditioner or to cool down an area.
• Battery SOC: Monitors your battery system and automatically starts
the generator when the battery requires charging  based on the actual
SOC (State of Charge) of the battery.
Note: Battery SOC is a more accurate method than using battery volt-
age as a criteria to determine when a battery requires charging.
Info: The SOC autostart/autostop feature requires the optional ME-BMK
or ME-BMK-NS (Battery Monitor Kit) accessory to accurately determine
the batterys SOC.
1.1 ME-AGS-N Module
Info: This manual is for the ME-AGS-N with a software revision of
5.0 or higher. Refer to your Magnum remote control manual or the
remote controls speci c section in this manual for assistance in
determining the AGSs software revision#.
Info: If you require an AGS module, but are not using a Magnum in-
verter/charger, use the ME-AGS-S (AGS  Standalone version).
The AGS is compatible with most AC or DC generators with either 2-wire or
3-wire start controls, such as: Onan, Generac, Martin, Kohler, Honda, Yamaha,
and many others. A list of generators that have been successfully used with
the AGS (and their respective wiring diagrams) can be found at:
http://www.magnumenergy.com/service/genwiringdiagrams.htm
The AGS is equipped with the following operational features:
 Allows manual on and off control (ME-ARC and ME-RTR only) and auto-
matic control of generator
 Compatible with 12, 24, or 48-volt systems
 Easily adjustable settings using the inverters remote control menus
(i.e., ME-RC, ME-ARC, or ME-RTR)
 Quiet Time setting to prevent generator operation during nighttime hours

© 2012 Magnum Energy, Inc. 2
1.0 Introduction
1.3 ME-AGS-N Components
The ME-AGS-N is shipped with the following:
 AGS module  Network Communications cable
 Remote Temp Sensor cable  ME-AGS-N Owners Manual
 Warning label  Mounting screws (x4)
1.3.1 ME-AGS-N Features
The AGS module provides the generators wiring connections and the following
components (refer to Figure 1-1):
1STATUS Indicator  a bi-color (green or red) LED indicator that
illuminates to provide information on the AGSs operation.
2
TEST Button  a momentary pushbutton that allows the AGS
system to be tested for correct wiring and generator start/stop
operation.
3Wiring Terminal Block  an 8-port friction- t connector that powers
the AGS and connects the generators start/stop and run sense wires.
4
Mounting Flange  used to secure the AGS to a shelf or a wall. Four
black oxide #8 x 3/4 Phillips drive, Pan head screws are provided
to mount the AGS.
 TEST button immediately con rms if installation wiring correct
 Removable 8-port terminal block for easy wiring and powering down
 Front panel LED indicators for gen start/stop status and gen fault
1.2 ME-AGS-N System Requirements
The AGS requires several other components to operate correctly.
Automatic Start Generator  The generator should have automatic starting
capability. The generator must have start and stop controls [i.e., an electric
starter and electric choke (for gasoline units)], and the safety sensors to
be able to start and stop automatically. These safety items include: low oil
pressure, high temperature, engine start over-crank, over/under frequency
(speed), low coolant level, etc. The generator should also supply a generator
run signal, which the AGS uses to detect whether the generator is running.
The generator run signal must be from 10 to 40 volts DC, and can be provided
from a generator hour meter signal or a switched B+ terminal.
Info: A generator run signal is not required when using Gen Type:
2-Wire Standby Mode and an AGS with a revision of 5.2 or higher.
Remote Control  A separate remote control (i.e., ME-RC, ME-ARC, or ME-
RTR) is required to con gure the AGS and to monitor generator starting and
stopping activity. Some of the more advanced generator start/stop features
are not available on the standard ME-RC and require the ME-ARC or ME-RTR
advanced controllers. Refer to your Magnum remote control manual or the
remote controls speci c section in this manual to determine your available
AGS autostart and autostop features.
Magnum Inverter  A Magnum inverter is required to communicate net-
work information from the Magnum remote control to the AGS. The inverter
must also have the internal software to work with the remote control and to
allow the desired AGS feature. See Section 7.1 for help in determining your
inverters compatibility level.

3 © 2012 Magnum Energy, Inc.
1.0 Introduction
4
1
2
3
6 7
5
8
Figure 1-1, Components of the ME-AGS-N Module
Figure 1-2, Remote Temp Sensor Cable (60 ft.)
READY Indicator  a green LED indicator that illuminates to signal
that the AGS is powered (blinks if the optional temp sensor is not
connected).
NETWORK Connection Port (green label)  a RJ14 port (6P4C
- 6 position, 4-contact female connection) which provides the
connection point for the network communication cable.
REMOTE Connection Port (purple label)  a RJ14 port (6P4C - 6
position, 4-contact female connection) that provides the connection
point for the remote temperature sensor cable (see Figure 1-2).
Internal Access Screws  four #6-32 x 3/8 Phillips screws that
must be removed to access the DC Input Jumper and the 4-position
DIP Switch.
5
6
7
Temperature
Sensor
8

2.0 Installation
© 2012 Magnum Energy, Inc. 4
2.0 Installation
Installing the AGS is a simple process. Before installing, read this entire
section so you can thoroughly plan the details to ensure the overall system
requirements are accomplished. To assist you in planning and designing your
installation, review the basic system diagram shown in Figure 2-1.
WARNING: The AGS is not an ignition-protection rated device and
should not be installed in any location that requires ignition-protected
equipment. To prevent  re or explosion, do not install the AGS module
in any area with extremely  ammable liquids like gasoline or pro-
pane, or in an area that contains connections between components
of a fuel system.
CAUTION: Installations should be performed by quali ed personnel,
such as a licensed or certi ed electrician. It is the installers respon-
sibility to determine which safety codes apply and to ensure that all
applicable installation requirements are followed. Applicable installa-
tion codes vary depending on the speci c location and application.
CAUTION: Review the Important Safety Instructions in the front
of this manual before any installation.
2.1 Installation Requirements
Review the following requirements prior to performing the installation:
 For the AGS to automatically start and stop the generator properly, the
generator must include an electric start and an automatic choke. To pre-
vent generator damage and to ensure reliable operation, use generator
models designed for unattended operation. These models should also be
equipped with remote operation connections and have protective systems
that shut down the generator when low oil pressure, over-temperature,
starter lockout, or over-crank conditions occur.
 The AGS is connected to a Magnum inverter by a 10-foot communications
cable. Before installing the AGS and connecting any wires,  rst determine:
1) the communications cable route throughout the home or vehicle/boat
from the AGS module to the inverter, 2) the start/stop signal wire route
from the AGS module to the generator, and 3) the wire route from the
AGS module to the monitored battery bank.
 Always check for existing electrical, plumbing, or other areas of potential
damage BEFORE drilling or cutting into walls.
 If installing the AGS in a boat, RV or truck, ensure the conductors pass-
ing through walls, bulkheads, or other structural members are protected
to minimize insulation damage such as cha ng, which can be caused by
vibration or constant rubbing.
 Do not mount the AGS module in a closed battery compartment or in
an area where water (any liquid) can enter the AGS and cause shorting
or corrosion.
 The AGS, if possible, should be wired so as not to interfere with the
manual start/stop switches on your generator, or with your air conditioner
controls if the high temp start feature is used to power the air conditioner.

5 © 2012 Magnum Energy, Inc.
2.0 Installation
SELECT
TECH
AGS METER SETUPSHOREINVERTER
CHARGER
INV
CHG
FAULT
PWR
ON/OFF
ON/OFF
Figure 2-1, ME-AGS-N System Diagram

2.0 Installation
© 2012 Magnum Energy, Inc. 6
2.2 Required Materials and Tools (not included)
To properly install the AGS module you will need to supply the following:
Required Materials
 16 to 12 AWG wire for connecting the AGS to the generator start/stop
circuit and to the battery bank
 In-line fuse holders (with a 5-amp DC fuse)
Required Tools
 Phillips screwdriver (#2)
 Flat-blade screwdrivers
(1/4 and 1/8 blades)
 DC voltmeter
 Cut-out tool (knife/saw)
 Drill bits (7/64 & 1/8)
 Drill
 Wire stripper
 Pencil
2.3 Mounting Procedure
Select an inside mounting location that is clean, dry, and protected from
extreme temperatures. Refer to Figure 2-2 for the AGS modules dimensions.
Info: The AGS module can be mounted in any direction. However,
be sure to allow ample room to access the 8-port terminal block, and
the NETWORK and REMOTE ports.
1. Remove the 8-port terminal block from the module (Figure 1-1, Item
3). The terminal block is friction- t, remove by pulling it straight out.
Note: Do not plug the terminal block back into the AGS module until
the installation is complete and you are ready to perform the functional
tests (per directions in Section 4.0).
2. Mount the AGS module using the supplied #8 x 3/4 screws (x4).
5
8
3 ”
7
8
4 ”
3
4
2
1
4
4 ”
3
8”3
8
5 ”
1
4
3 ”
3
8”
2”
3
16 ”
(31.8 mm)
1
4
1 ”
(82.6 mm)
(92.8 mm)
(136.6 mm)
(108 mm)
(123.9 mm)
(9.5 mm)
(50.8 mm)
(69.9 mm)
(9.5 mm) (4.8 mm)
Figure 2-2, ME-AGS-N Dimensions

7 © 2012 Magnum Energy, Inc.
2.0 Installation
2.4 Connecting the Cables
The AGS comes with two cables: the temp sensor cable is required if using the
temperature autostart feature; the network communication cable is required
for communicating with the inverter/remote.
Figure 2-4, Network Communication Cable
TAB
TAB
same color
same
color
4-conductor
telephone-type
opposite colors
from top to
bottom (tabs
facing toward you)
2.4.1 Connecting the Remote Temp Sensor Cable
If using the temperature autostart feature, connect the plug-in end of the
temp sensor cable to the REMOTE (purple) port of the AGS module, and then
place the other end (with sensor) in the area you wish to monitor (see Figure
2-3). The temp sensor cable is 60 feet long.
If you are not using the temperature autostart feature, the temp sensor
cable does not need to be connected.
Note: The AGSs READY light will blink if the temp sensor cable is not
connected  this is normal.
ME-AGS-N
Remote
Temp Sensor
cable
Figure 2-3, Remote Temp Sensor Connection
2.4.2 Connecting the Network Communication Cable
The network communication cable is a 10-foot, 4-conductor,  at, telephony
standard with 6P4C (6-position/4-conductor) connectors on each end. When
the 6P4C connectors are held side by side with both of the connector tabs
facing the same way, the color of the conductors in each connector is the
opposite from top to bottom (as shown in Figure 2-4).
Note: The network communication cable can be extended up to a length of
200 feet without data degradation.

2.0 Installation
© 2012 Magnum Energy, Inc. 8
Figure 2-6, Connecting the AGS to a Magnum Inverter (Large)
Large Magnum inverter
ME-AGS-N
Network Communications
cable from AGS NETWORK
(green) port to inverters
Network (green) port
Remote cable to
inverters Remote
(blue) port
Remote
DC 12.6V 5A
Figure 2-5, Connecting the AGS to a Magnum Inverter (Small)
Remote
ME-AGS-N
Small Magnum inverter
Phone splitter that connects
AGS network cable (from
AGSs green NETWORK port)
and remotes cable to
inverters Remote (blue) port
DC 12.6V 5A
Connecting the AGS to a Magnum inverter: Connect one end of the
communication cable to the AGSs RJ14 NETWORK (green) port, and then:
• Small inverter (MM/MMS Series)  connect the other end of the
communication cable to a phone splitter, and then connect the splitter
to the REMOTE (blue) port on the small Magnum inverter (see Figure
2-5); or,
• Large inverter (ME, RD, MS, MS-PAE Series)  connect the other
end of the communication cable to the RJ14 Network port (green) on the
large Magnum inverter (see Figure 2-6).

9 © 2012 Magnum Energy, Inc.
2.0 Installation
2.4.3 Cable Connections with Multiple Devices
If you are using more than one Magnum networked device, a 4-wire phone
splitter is required to connect the devices. There are two options for inter-
connecting the devices  either in a Star or Daisy Chain con guration.
Info: Before deciding on which con guration to use, review the dif-
ferences in installation and ease of troubleshooting.
• Star Confi guration  In this arrangement, all the network devices con-
nect to the inverters Network port via a phone splitter, using individual
cable runs (Figure 2-7). Since each device is independently connected
to the inverters Magnum Net or Network port, problems in a cable or
a device can be easily isolated; and, if there is a cable failure to one
device it does not bring down all the devices.
DC 12.6V 5A SELECT
TECH
AGS METER SETUPSHOREINVERTER
CHARGER
INV
CHG
FAULT
PWR
ON/OFF
ON/OFF
ME-BMK
Remote Control
ME-AGS-N
Magnum Inverter/Charger
Phone splitter
Figure 2-7, Multiple Network Devices – Star Confi guration
• Daisy Chain Confi guration  In this arrangement, the network de-
vices are linked in a series (Figure 2-8). If using this con guration, the
ME-AGS-N must be the  rst device connected to the inverters Magnum
Net or Network port  followed by the second network device.
DC 12.6V 5A SELECT
TECH
AGS METER SETUPSHOREINVERTER
CHARGER
INV
CHG
FAULT
PWR
ON/OFF
ON/OFF
ME-AGS-N (1st device)
Remote Control Magnum Inverter/Charger
Phone
splitter
ME-BMK (2nd device)
Figure 2-8, Multiple Network Devices – Daisy Chain Confi guration

2.0 Installation
© 2012 Magnum Energy, Inc. 10
2.5 ME-AGS-N Terminal Block Wiring Connections
With the AGS already mounted, remove the green 8-port terminal block before
proceeding with wiring the generator. Refer to Figure 2-11 and the info below
to wire the AGSs terminal block to the generator.
CAUTION: DO NOT plug in the 8-port terminal block until all the
wiring to the module is complete and you are ready to perform the
functional tests (per instructions in Section 4.0).
CAUTION: A fuse rated at 5 amps or less must be used to protect
all power circuits connected to the AGS (do not fuse ground connec-
tions). Ensure the fuse is correctly rated for the wire size used. Refer
to national and local codes for rating and type. Normally, a minimum
#16 AWG wire is required in order to use a 5-amp fuse.
Info: The green 8-port terminal block accepts CU/AL conductors from
#30 to #12 AWG (0.05 to 3.3 mm2).
2.5.1 Power Connections (Terminals 3 & 4)
Terminals #3 (positive) and #4 (negative) on the 8-port terminal block are
connected to the monitored battery bank*. These terminals are used to power
the AGS module and to monitor the inverters battery voltage (when used to
autostart the generator based on low battery voltage).
Info: The AGS requires a DC input of 8.5-70 volts in order to operate
the internal relays. An input voltage greater than 70 volts will cause
damage to the AGS and is not covered by the product warranty.
* Monitored Battery Bank  When autostarting the generator based on battery
voltage (i.e., start VDC), the inverters battery bank must be connected to Termi-
nals #3 (positive) and #4 (negative). If autostarting based on any other condition
(i.e., temperature, amps, etc.), either the inverter battery bank or the generators
battery may be used to power the AGS module. However, the negative terminal
of every battery bank must be connected together to prevent damage to the AGS
(see Section 2.4.4).
2.4.4 Ensure all Negative Connections are Connected Together
When connecting devices together (via a network communication cable),
the return path (i.e., battery negative) of each battery powered device must
be at the same potential (i.e., electrically common with each other). This
prevents a high-impedance path developing between the connected devices,
which can cause the network cable to become the DC return path to the
battery  possibly resulting in permanent damage to all connected devices
on the network. This also requires that the battery negative connection of
each device be always connected before connecting/disconnecting any bat-
tery positive.
Network cable
Inverter
Battery
Inverter
Battery
AGS Inverter
Figure 2-9, Connected Devices at the Same Potential

11 © 2012 Magnum Energy, Inc.
2.0 Installation
Info: The negative terminal of the monitored battery bank must be in
common with the negative side of the gen run sense signal from the
generator. This ensures that the positive battery voltage (to Terminal
#3) and the positive gen run sense voltage (to Terminal #2) have
a common negative reference (to Terminal #4), and are correctly
sensed/measured by the AGS.
To install the generator’s run sense voltage to the AGS:
1. Connect a wire (preferably not black or red) from the generators run
sense output to Terminal #2 on the 8-port terminal block.
2. Connect the negative terminal of the monitored battery bank to Terminal
#4 (power negative) on the 8-port terminal block. Ensure the negative
terminal on the generator battery is referenced/connected to the nega-
tive terminal on the monitored battery.
2.5.2 Generator Run Sense Connection (Terminals 2 & 4)
A generator run sense signal/voltage is required as it alerts the AGS that the
generator is running; which prevents another starter crank to the generator.
If the gen run sense signal is not provided to the AGS, the AGS commands
the generator to autostop (in case the generator is actually running), and then
attempts another autostart sequence (up to four start attempts before a gen
start fault occurs). The Gen Type switch setting (under Section 3.1) determines
the required gen run sense signal/voltage that must be provided to the AGS.
• Gen Type is 2-Wire Standby Mode*  If your generator is fully auto-
matic and can start, run, and stop using only two wires, you may be able to
use the 2-Wire Standby setting (see Gen Type settings under Section 3.1).
When using this setting, the gen run sense signal is communicated from
the inverter to the AGS thru the network cable. The AGS determines that
the generator is running when the inverter/charger communicates that
it is in a charge state (i.e., Charging, Bulk Charge, Absorb Charge, etc.).
* Requires ME-AGS-N with revision 5.2 to use 2-Wire Standby mode.
When using the 2-Wire Standby setting (and the generator is autostarted
by the AGS), the generator runs and connects to the input of the inverter.
This causes the inverter to begin charging, which in turn communicates
to the AGS (via the network cable) that the generator is running  pre-
venting another starter crank command from the AGS.
• Gen Type is not 2-Wire Standby Mode  For all other Gen Type set-
tings (other than 2-Wire Standby mode), the generator run sense must
be 10 to 40 VDC  only while the generator is running. The gen run sense
voltage from the generator is connected to Terminal #2 (positive) and
Terminal #4 (negative) on the green 8-port terminal block on the AGS;
and can be a switched B+ source from the generator, a positive signal
from the generators hour meter, or the generators running light.
What if my generator does not have a gen run sense output? If your
generator is not equipped with a generator run sense output (10 to 40 VDC -
only while the generator is running), review the alternative options as shown
in Figure 2-10 to provide this gen run sense voltage to the AGS.
To make power connections from the monitored battery bank to AGS:
1. Route and connect a wire (black) from the monitored battery banks
negative terminal to Terminal #4 on the 8-port terminal block.
2. Route and connect a wire (red) with a 5-amp in-line fuse from the moni-
tored battery banks positive terminal to Terminal #3.

2.0 Installation
© 2012 Magnum Energy, Inc. 12
Figure 2-10, Generator Run Sense Options
DC Fuse
(5A max)
AGS Terminal Block Ports:
1 2 3 4 5 6 7 8
On Generator
120VAC Outlet
120VAC IN
12VDC OUT
TRANSFORMER
120 VAC Coil Relay
On Generator
NC
COM
NEU
HOT
NO
120VAC Outlet
Inside Generator
Generator
Battery
AGS Terminal Block Ports:
1 2 3 4 5 67 8
DC Fuse
(5A max)
Generator
Battery
Inside Generator
Generator
Running
Lamp
OR
Generator
Hour
Meter
0123
DC Fuse
(5A max)
AGS Terminal Block Ports:
1 2 3 4 5 6 7 8
Alternative Option 3  Use an external 120 VAC coiled relay to bring the
generators battery voltage to the AGS gen run sense terminal (AGS terminal
block  Terminal #2) only while the generator is running. The generators
battery voltage must be 10 to 40 VDC.
Alternative Option 2  Use a 120 VAC to 12 VDC step-down transformer
(normally used to charge power equipment batteries) and plug it into the
generators 120 VAC output. The step-down transformer provides 12 VDC
output only while the generator is running.
Alternative Option 1  Tap into the positive side of the generators hour
meter or running lamp; ensure the voltage is 10 to 40 VDC only while the
generator is running.

13 © 2012 Magnum Energy, Inc.
2.0 Installation
2.5.3 Gen Start/Stop Connections (Terminals 1, 5, 6, 7, & 8)
This section covers the control relays inside the AGS module, and provides
information about wiring these relays to the generators start/stop circuit.
You must identify the generators start and stop wiring requirements in
order to determine: how many relays you require, the number of wires you
connect, and in what combination.
When the generator is equipped with a remote control terminal or connector,
it is much easier to make the connections to the AGS control relays if
the generators optional remote control is purchased. Connecting to the
generators remote also eliminates the need to make connections inside the
generator (and possibly violating the generators warranty).
The AGS module provides three control relays (RY1, RY2, and RY3) to
operate the autostart/autostop functions of your generator. These relays are
dry contacts (they do not provide any voltage or current), and operate only
as switches that turn low amperage devices ( 5 amps) on and off. They
are not intended to directly provide power to starter motors or to ignition
systems. Rather, the relays are used to send a signal to operate the coil of
another higher amperage device, which does the actual switching of power.
CAUTION: A fuse rated at 5 amps or less must be used to protect
each of the relays. The warranty does not cover damage to these
relays. Fuses should be located as close as possible to the generator
connection. A fuse must be used, even if the circuit is providing only
a dry contact or ground connection  it will prevent damage if
the connection is miswired or damaged.
Info: To set the generator type  which determines the operation
of the AGS relays  see the Gen Type setting info in Section 3.1.
Info: Due to the different generator types and the various starting/
stopping wiring con gurations used by generator manufacturers,
detailed wiring instructions are not provided in this manual. Please
refer to your generators documentation for wiring details.
Info: For more information, and to view diagrams on connect-
ing the AGS to the start/stop circuit on many generators, go to
http://www.magnumenergy.com/service/genwiringdiagrams.htm.
Depending on your generators start and stop wiring requirements, you may
only need to use one relay (RY1) for fully automatic 2-wire generators; two
relays (RY1 and RY2) for 3-wire generators; or all three relays (RY1, RY2,
RY3) for generators that require an independent bypass or preheat circuit.
The connection points to each relay are as follows (see Figure 2-11):
• Relay 1 (RY1) and Relay 2 (RY2)
Terminal #5: the Normally Open (N.O.) position of the RY1 relay
Terminal #6: the Common (COM) position of both Relay 1 (RY1) and
Relay 2 (RY2)
Terminal #7: the Normally Open (N.O.) position of Relay 2 (RY2)
• Relay 3 (RY3)
Terminal #1: the Common (COM) position of Relay 3 (RY3)
Terminal #8: the Normally Open (N.O.) position of Relay 3 (RY3)

2.0 Installation
© 2012 Magnum Energy, Inc. 14
Figure 2-11, Wiring to the ME-AGS-N Module’s Terminal Block
12 3 4 5 6 78
RY1
NC
COM
NONC
COM
NONC
COM
NO
Positive DC voltage input
[positive terminal from monitored
battery bank (8.5 to 70 volts DC from
the positive terminal of the monitored
battery bank); negative side is
connected to Terminal #4]
Negative DC voltage input
[negative terminal from monitored battery
bank (positive side connected to Terminal 3),
and the negative side of the run sense signal
(positive side connected to Terminal 2)]
Positive run sense input (10 to 40 volts DC
only when generator is running; negative
side is connected to Terminal #4)
Not required if Gen Type setting is 2-Wire
Standby mode
Common (COM) contact on Relay 3 (RY3)
Normally Open (N.O.)
contact on Relay 3 (RY3)
Common (COM) contact on
Relay 1 (RY1) and Relay 2 (RY2)
Normally Open (N.O.)
contact on Relay 2 (RY2)
Normally Open (N.O.) contact
on Relay 1 (RY1)
8
7
1
2
3
4
5
6
RY2 RY3
Relays inside the AGS controller