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
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 specifi 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.
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 entire 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: 425-353-8833
Fax: 425-353-8390
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.
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, fi 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 specifi ed action
could result in physical harm to the user.
CAUTION: Symbol indicates that failure to take a specifi 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.
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 confi 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 confi 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 possible 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.
Congratulations on purchasing your ME-AGS-N. The ME-AGS-N is the ‘network’ version of Magnum Energy’s Automatic Generator Start (AGS) modules. 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 generator can automatically start and stop based on the following conditions:
the generator when the battery voltage falls to a certain level, and
autostops the generator when the battery voltage either rises to a higher 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 power 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 specifi 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 inverter/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:
• TEST button immediately confi 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 confi 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 specifi 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.
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 fi re or explosion, do not install the AGS module
in any area with extremely fl 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 qualifi ed personnel,
such as a licensed or certifi 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 installation codes vary depending on the specifi 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 prevent 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, fi 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 chafi 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.
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.
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.
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, fl 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
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 interconnecting the devices – either in a Star or Daisy Chain confi guration.
Info: Before deciding on which confi 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.
Remote Control
PWR
FAULT
Inverting
CHG
DC 12.6V 5A
INV
ON/OFF
CHARGER
ON/OFF
AGS METER SETUPSHOREINVERTER
SELECT
TECH
Magnum Inverter/Charger
ME-BMK
ME-AGS-N
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 confi guration, the
ME-AGS-N must be the fi rst device connected to the inverter’s Magnum
Net or Network port – followed by the second network device.
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 battery positive.
Inverter
AGSInverter
Figure 2-9, Connected Devices at the Same Potential
Inverter
Battery
Battery
Network cable
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 connections). 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 Terminals #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).
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 monitored battery bank’s positive terminal to Terminal #3.
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 – preventing 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.
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 negative terminal on the monitored battery.
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.
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.
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.
AGS Terminal Block Ports:
1 2 3 4 5
run sense
negative
7 8
6
Inside Generator
Generator
Battery
OR
0123
DC Fuse
(5A max)
Generator
Hour
Meter
Generator
Running
Lamp
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.
On Generator
AGS Terminal Block Ports:
1 2 3 4 567 8
120VAC Outlet
run sense
negative
120VAC IN
12VDC OUT
TRANSFORMER
DC Fuse
(5A max)
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.
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 confi 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
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)
[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 DC voltage input
3
[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]
Positive run sense input (10 to 40 volts DC
2
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)
1
Figure 2-11, Wiring to the ME-AGS-N Module’s Terminal Block
The most common generator starting/run/stop circuits can be divided into
three major types – 2-wire control, 3-wire momentary control, or 3-wire
maintain control. The following gen wiring diagrams are provided as examples:
Info: The term “3-wire” refers to the minimum number of wires
required to control the starter motor and to run the generator; more
than three wires may actually be needed.
Two-wire control generator types: These generator types integrate the
control circuits for start-up, running, and stopping (Figure 2-13). The generator starts and runs when two control wires are connected, and then stops
when they are disconnected.
Three-wire momentary control generator types: These generator types
use a three-position momentary type switch that controls their operation
(Figure 2-14). To start the generator, the switch is momentarily held in the
START position. This energizes the ignition system and cranks the starter
motor. Once the engine has started, the switch is released and it returns to a
center position (i.e., “momentary” run control). To shut down the generator,
the switch is held in the STOP position until the engine dies. Once the switch
is released, it returns to the center position (i.e., “momentary” stop control).
Three-wire maintain control generator types: These generator types use
an automotive type starting circuit (Figure 2-15). To start the generator, an
operating switch is fi rst turned to a RUN position and then momentarily held to
a START position. Once the engine starts, the switch is released and it returns
to the RUN position (i.e., “maintain” run control). To shut down the generator, the switch is moved to the OFF position (i.e., “maintain” stop control).
2.7 Warning Label
It might be falsely assumed that it is safe to perform maintenance on the
generator or the electrical panel once the generator is off. However, the AGS
system can automatically turn on the generator and power the panel.
A warning label (Figure 2-12) is provided to inform all personnel that an
automatic generator starting device is installed in your electrical system.
Place the label in a clearly visible location at the generator (ensure it is
especially visible at the generator cabinet or at the enclosure that guards
electrical shock or moving parts hazards).
WARNING: To prevent harm to servicing personnel, ensure the gen-
erator and AGS are properly disabled (i.e., remove the starting battery
from the generator, and remove all power to the AGS by u
the green 8-port terminal block from the AGS module) prior to per-
forming maintenance on the generator or electrical panel.
nplugging
WARNING
This electrical system is equipped with an Automatic
Generator Starting device and/or an inverter. Disconnect
all AC and DC power to the ME-AGS-N and/or inverter
before performing any service to the electrical system.
Failure to do so can result in shock causing serious injury
or death.
This section covers the AGS’s internal settings and how to configure them.
3.1 Confi guring the Internal ME-AGS-N Settings
Unscrew the AGS module’s four top screws and remove the plastic cover to
access the Input DC Voltage Jumper and the 4-position DIP (Dual In-line Package) switch (Figure 3-1).
Input DC
Voltage
Jumper
Setting
(Default: 12V
12/24/48V
Setting)
DIP Switch
4321
Gen Type
Setting
(Default: QD
Mode Setting)
RY1RY2RY3
12/24/48V
4321
2
ON
134
ON
Figure 3-1, Inside the ME-AGS-N Module
Input DC Voltage Jumper Setting – This setting is determined by connecting
two small pins with a small, black plastic box (i.e., jumper). This setting can be
confi gured for 12, 24 or 48 VDC operation (Figure 3-2), which is determined
by the nominal DC voltage connected to Terminals #3 and #4 on the AGS.
• For 12-volt DC operation, position the jumper on the bottom two pins.
• For 24-volt DC operation, position the jumper on the middle two pins.
• For 48-volt DC operation, position the jumper on the top two pins.
12 VDC Operation
(jumper on bottom
two pins)
24 VDC Operation
(jumper on middle
two pins)
48 VDC Operation
(jumper on top
two pins)
**default setting**
Figure 3-2, DC Voltage Settings
DIP Switch Gen Type Setting – The Gen Type setting is determined by a
DIP switch, which is actually four small switches that can be turned to the ON
or OFF positions. The position of each of these switches is used to determine
the open and close timing sequence for the three internal AGS relays (RY1,
RY2 and RY3). The multiple positions of the DIP switch allow a wide range of
generator start/stop circuit confi gurations.
After determining the appropriate start/stop timing sequence for your
generator, use Table 3-1 to determine the correct Gen Type setting for your
generator’s start/stop requirements.
For examples and further assistance, view the generator wiring diagrams at:
After all electrical connections to the AGS module, batteries, and generator
have been completed (and prior to reconnecting the green 8-port terminal
block), perform the following tests to verify that the AGS system is functioning correctly and the wiring from the AGS to the generator is correct. Once
the AGS module passes the functional tests, you can set up the AGS for
your autostart and autostop requirements (refer to: Section 8.0 for a ME-RC
controller, Section 9.0 for a ME-ARC, or Section 10.0 if you have a ME-RTR).
Note: The communication cable from the inverter to the green NETWORK
port on the AGS is not required in order to perform these tests.
4.1 Power-Up Test
1. Before connecting the 8-port terminal block into the AGS module, use a
multimeter to verify the correct polarity and that the voltage to Terminals
#3 (positive) and #4 (negative) is correct according to the position of
the input DC voltage jumper (refer to Figure 3-2).
2. Apply power to the AGS module by plugging in the green 8-port terminal
block into the module, and then verify that the green READY LED comes
on and the STATUS LED blinks green once.
Info: The green READY LED will come on (solid) when the AGS module
is powered and the temperature sensor is connected, and will blink
if the temperature sensor is not connected or detected. A connected
temperature sensor is not required unless the temperature autostart
feature is needed.
4.2 Generator Wiring Test
This start/stop test is used to confi rm that all wiring from the generator to
the AGS module is correct and the Gen Type setting (Table 3-1) is confi gured
correctly for your generator type.
1. Press and release the red TEST button on the AGS (see Figure 5-1).
2. The STATUS LED on the AGS module will begin to blink green and the
generator should start (a blinking green STATUS LED means the AGS has
initiated an automatic generator start/stop sequence).
3. Once the generator starts, it should run for approximately 30-60 seconds
before automatically turning off (ensure the it will not try to restart within
the next two minutes). View the STATUS LED and ensure it turns solid
green (a solid green STATUS LED means the generator has started suc-
cessfully and is providing the gen run sense signal to the AGS module¹).
Note: If the generator attempted to start but did not run, continue to wait,
the AGS will attempt to start the generator 3 more times.
If your AGS/generator system passes all steps above (may attempt an auto-
start 4 times), then the wiring from the AGS to the generator is correct. You
are now ready to set up and activate the AGS using your remote control panel.
Info: The AGS attempts to start the generator 4 times. If after 4
attempts the generator fails to start, the STATUS LED turns red –
indicating a fault.
If the generator did not start, or the STATUS LED shows a fault condition (solid
red LED indication), refer to Section 6.0 “ME-AGS-N Module Troubleshooting”.
Note¹: The gen run sense signal from the generator to Terminal #2 on the
AGS is not required when using the 2-Wire Standby Mode (Gen Type setting).
This section details the operation of the ME-AGS-N module (independent of
the remote control operation).
5.1 ME-AGS-N Module TEST Pushbutton
The front of the module (Figure 5-1) has a red pushbutton to test the AGS
system operation. When the red TEST pushbutton is pressed and released,
the AGS initiates an automatic generator start/stop sequence. This test
attempts to turn the connected generator on and to have it run for at least
30 seconds before turning off. This start/stop test is used to confi rm that
all wiring from the generator to the AGS is correct and that the AGS is
confi gured correctly for your generator type.
Note: If the generator is running from an autostart condition when the AGS
module’s TEST button is pressed, the AGS will turn the generator off and
initiate an automatic generator start/stop test sequence (running 30-60
seconds) – using 4 autostart attempts if needed.
5.2 ME-AGS-N Module LED Indicators
The front of the module (Figure 5-1) has two LED indicators for viewing
system operation.
5.2.1 STATUS LED Indicator
Blinking Green: Indicates that the AGS system is initiating a generator
start sequence. This happens when the TEST button (on the AGS) has been
pressed and released, or a remote control has communicated to the AGS to
autostart the generator.
Solid Green: Indicates the generator has started successfully and is providing
the gen run sense signal/voltage to the AGS module.
Solid Red: Indicates a fault condition in which the generator either has not
started, or has not provided the correct run gen sense signal/voltage to the
AGS module – after four start attempts.
5.2.2 READY LED Indicator
Solid Green: Indicates the AGS module has power and the temperature sen-
sor cable is detected. This indicates normal AGS system operation.
Blinking Green: Indicates that the AGS module has power, but the tempera-
ture sensor is not detected. This can mean the temperature sensor cable is
either not connected, incorrectly connected, or is defective.
Note: The temperature sensor is not required to be connected unless the
temperature autostart feature is needed.
STATUS
Indicator
(green/red)
TEST
Button
READY
Indicator
(green)
Figure 5-1, ME-AGS-N Front Panel Controls and Indicators
The two LEDs on the front of the AGS controller indicate how the AGS is
operating and help you troubleshoot the AGS system. The STATUS LED is bicolor (green or red) and indicates the AGS’s status. The READY LED is green,
and lights if the AGS has power and the remote temp sensor is connected.
The AGS controller performs a “self test” when power is fi rst applied. The
green READY LED lights up (solid) and the STATUS LED blinks green once. If
the self-test is successful, test the AGS system for proper operation by pressing and releasing the TEST button. The STATUS LED blinks green, and the
AGS should start the generator. Once the generator starts, the STATUS LED
lights solid green and the generator runs for approximately 30-60 seconds,
and then shuts off (will not try to restart within the next two minutes). If the
generator does not start and stop as expected, refer to Table 6-1 below to
help fi nd a solution.
WARNING: Completely unplug the green 8-port terminal block from
the AGS modulebefore performing maintenance on the electrical or
generator system to prevent harm to servicing personnel.
Table 6-1, ME-AGS-N Module Troubleshooting Guide
LED
Indication
STATUS is on red
= Gen fault
STATUS is blinking
green = Gen start
initiated
STATUS is on solid
green = Gen run
READY is off =
No power connected to the AGS
module
READY is blinking
= The temperature sensor is not
detected
Note: Temp sensor is not required
to be connected
unless the temp
autostart feature
is needed.
READY is on
(solid) = Power
and temp sensor
connected
SymptomSolution
1. Gen won’t start; or
2. Gen won’t run. It
starts, but is stopped
by the AGS (B+ or gen
run sense voltage not
sensed to Terminal
#2).
Gen start initiated.
Gen is running.
DC voltage to Terminals #3 (+) and #4
(-) on module missing or incorrect.
The temp sensor
is not sensed or
plugged into the
purple REMOTE port.
The temp sensor
is connected to the
purple REMOTE port.
Refer to Section 6.0 “ME-AGS-N Module
Troubleshooting” for assistance.
Unplug/remove and reconnect the green
8-port friction-fi t terminal block to reset
the STATUS (fault) indicator.
No problem – normal operation.
No problem – normal operation.
1. Check fuse, check DC wiring.
2. Check the DC voltage under the AGS
TECH menu.
1. Check the temp sensor cable and its
connection to the purple REMOTE port, or
This section helps troubleshoot the generator system when the AGS’s STATUS LED shows a fault condition (solid red LED indication), or the remote
control displays a generator autostart fault.
Press the TEST button on the AGS module, or start the generator from the
remote (refer to Section 8.2.1.2 - RC, 9.2.1.2 - ARC, and 10.2.1.3 - RTR).
6.2.1 If the Generator will not Start or Run
If the generator does not start after pressing the AGS module’s TEST button,
follow the steps below.
1. Ensure the green READY indicator on the AGS module is on (blink-
ing or solid) to indicate that the AGS module is getting power
(see Figure 5-1).
2. Check the generator for fuel or for any fault codes, or check the gen-
erator’s operating manual for troubleshooting tips to resolve why the
generator will not start or run.
3. Check that the start/stop wiring has not come loose and is correctly con-
nected for your generator model. A wiring diagram for your particular
brand and model of generator may be available, check our website at:
4. Your generator may require a higher amperage start signal than what
our AGS relays are rated (approx. 5 amps); in that case, you will need
to supply a higher-rated external relay.
5. If the generator tries to start as soon as you initiate a test (instead of
waiting for the initial stop signal before attempting to start), check the
start and stop wire connections, it is possible that they are reversed.
6. Remove the generator start/stop wires from the AGS’s 8-port terminal.
Simulate the AGS relays by physically connecting the start wires fi rst to
ensure the generator starts and runs. Then, connect the stop wires and
ensure the generator stops. If the generator does not start or stop as it
should, recheck and troubleshoot the start/stop wiring to the generator.
6.2.2 STATUS LED does not go Solid
If the generator is running, but the STATUS LED on the AGS module is not
on solid, then:
1. Ensure the AGS is not in warm-up (STATUS LED should go solid once the
warm-up period is over).
2. Confi rm you are getting the correct gen run sense signal based on your
Gen Type setting.
Info: Refer to the Gen Type Setting section (page 19) and Table 3-1
(page 20) to determine your Gen Type setting.
• Gen Type is 2-Wire Standby Mode – When using 2-Wire Standby
mode, the gen run sense signal is communicated from the remote control to the AGS thru the remote control cable. The AGS determines that
the generator is running when the remote communicates that it is in a
charge state (i.e., Charging, Bulk Charge, Absorb Charge, etc.).
Note: In order to perform the 2-Wire Standby mode tests: the remote
control must be connected to the inverter, and the green Network port
on the inverter must be connected with the communication cable to the
green NETWORK port on the AGS.