Mastervolt 12/700 Operating manual

AC Master
PURE SINE WAVE INVERTER
12/700, 12/1000, 12/1500, 12/2000
24/700, 24/1000, 24/1500, 24/2000
EN
USER AND INSTALLATION MANUAL
10000011348/03

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AC Master
Product description
The AC Master is a sine wave inverter. The AC Master converts DC energy from the battery into AC
output power.
Identification label
Never remove the identification label.

AC Master
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Dimensions
Model
A (mm/in) B (mm/in) C (mm/in) D (mm/in) E (mm/in) F (mm/in)
700 330 / 13,0 80 / 3,1 132 / 5,2 200 / 7,9 7 / 0,3 83 / 3,3
1000 372 / 14,6 69 / 2,7 196 / 7,7 200 / 7,9 7 / 0,3 83 / 3,3
1500 421 / 16,6 92 / 3,6 196 / 7,7 248 / 9,8 7 / 0,3 83 / 3,3
2000 443 / 17,4 103 / 4,1 196 / 7,7 248 / 9,8 7 / 0,3 83 / 3,3

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AC Master
DC input
1 Remote port (RJ-11)
2 Remote control terminal
3 Chassis ground terminal
4 Battery input

AC Master
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AC output
1 AC output socket
SCHUKO EU GFCI US
2 Power saving mode adjustment
3 DIP switches
4 LED indicators
5 Main switch

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AC Master
Installation instructions
This section provides a step by step instruction of the basic installation of the AC
Master. However; please review the entire manual for connection of additional features
and to ensure best performance and years of trouble-free operation.
Read the safety instructions! See section 1 on page 12.
Use isolated tools!

AC Master
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1. Disconnect power supplies
2. Switch OFF the AC Master
3. Select a location that complies with section 6 on page 13.

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AC Master
4. Mount the AC Master with four screws to a solid surface.
5. Connect the chassis ground terminal to the central grounding point of the vehicle/ship.

AC Master
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6. Optional: Connect remote panel or remote switch, see section 6 on page 13.
7. Connect the battery to the DC input.
700/1000
1500/2000

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AC Master
8. Integrate a fuse holder in the positive battery wire, but do not place the fuse yet.

AC Master
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9. Connect the AC load. See section 5 on page 13 for instructions on neutral grounding.
10. Check all wiring. If all wiring is OK: Place the inverter fuse.
11. Switch ON the AC Master. In case of remote operation choose REMOTE.

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1. Safety instructions
WARNING!
Read the entire manual before using the AC Master. Keep the manual at a safe location for
future reference.
• Use the AC Master following the instructions and specifications stated in this manual.
• Connections and safety features must be executed according to the locally applicable
regulations.
• Operation of the AC Master without proper grounding may lead to hazardous situations!
• Use DC-cables with an appropriate size. Integrate a fuse in the positive wiring and place it
nearby the battery. Refer to the specifications.
• If the positive and negative wires on the DC-input (battery) are exchanged, the AC Master will
be damaged. Damage of this kind is not covered by guarantee. Check whether all connections
are connected correctly before placing the fuse.
• Do not connect the AC-output of the AC Master to an incoming AC source.
• Never connect the AC Master in parallel with any other inverter.
• Never open the housing as high voltages may be present inside!
2. Liability
Mastervolt cannot be held liable for:
• Consequential damage resulting from the use of the AC Master.
• Possible errors in the included manual and the consequences of these.
• Use that is inconsistent with the purpose of the product.
3. Warranty
Mastervolt assures the product warranty of the AC Master during two years after purchase, on the
condition that the product is installed and used according to the instructions in this manual.
Installation or use not according to these instructions may result in under performance, damage or
failure of the product and may void this warranty. The warranty is limited to the cost of repair and/or
replacement of the product. Costs for labour or shipping are not covered by this warranty.
4. Correct disposal of this product
(Waste Electrical & Electronic Equipment)
This product is designed and manufactured with high quality materials and
components, which can be recycled and reused. When this crossed-out wheeled bin
symbol is attached to a product, it means the product is covered by the European
Directive 2012/19/EU.
Please be informed about the local separate collection system for electrical and electronic products.
Please act according to your local rules and do not dispose of your old products with your normal
household waste. The correct disposal of your old product will help prevent potential negative
consequences to the environment and human health.

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5. Neutral grounding
For safe installation:
• The chassis ground terminal must be connected to the central grounding point of the vehicle/
ship.
• The neutral conductor (N) of the AC output of the AC Master must be connected to the safety
ground (PE/GND) and a ground fault circuit-interrupter (GFCI) must be integrated in the wiring of
the AC output. Note that the AC output socket of the 120 V models, has a built-in GFCI!
Refer to locally applicable regulations on these issues!
6. Installation
The basic installation is described step-by-step at the beginning of this manual. The location
requirements, the recommended wire sizes, the optional remote panel and the optional remote
control terminal are described in the following sections.
Choosing a location to install
• Install the AC Master in a well-ventilated room protected against rain, snow, spray, vapour, bilge,
moisture and dust.
• Ambient temperature: –25 ... 60°C / –13…140°F.
• Never use the AC Master at a location where there is danger of gas or dust explosions.
• Mount the AC Master in such a way that obstruction of the airflow through the ventilation
openings is prevented. No objects must be located within a distance of 10 cm / 4 inch around
the AC Master.
• Do not install the AC Master in the same compartment as the batteries. Do not mount the AC
Master straight above the batteries because of possible corrosive sulphur fumes.
Recommended wire sizes DC
Model 12 V Minimum cross section Model 24 V Minimum cross section
700 25 mm
2
4 AWG 700 16 mm
2
6 AWG
1000 35 mm
2
2 AWG 1000 16 mm
2
6 AWG
1500 50 mm
2
1/0 AWG 1500 25 mm
2
4 AWG
2000 70 mm
2
2/0 AWG 2000 35 mm
2
2 AWG
Recommended wire sizes AC
Model 12 V and 24 V Minimum cross section
700 0,50 mm
2
20 AWG
1000 0,75 mm
2
18 AWG
1500 1,00 mm
2
17 AWG
2000 1,50 mm
2
16 AWG
700 (120 V) 1,00 mm
2
17 AWG
2000 (120 V) 2,50 mm
2
14 AWG
Remote panel (optional)
Optionally the remote panel is connected to the remote port (RJ-11) on the DC input side. Before
using the remote panel, make sure the main switch is at “REMOTE” position before startup.

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Remote control terminal (optional)
The remote control terminal offers two functions:
• Alarm contact (dry contact)
The alarm contact switches when a fault occurs.
• Remote switch
Install a switch for remote operation. Make sure the main switch is at “REMOTE” position.
Alarm contact (maximum load 30 V / 1 A)
1 Normally Open (NO)
2 Common
3 Normally Closed (NC)
Remote control
4 Enable  (ENB)
5 Enable  (ENB)
6 Ground (GND)
(same polarity with negative battery input)
7. Configuration
DIP switch functions
1 Output voltage selection
2 Output voltage selection
3 Output frequency selection
4 Power saving mode ON/OFF
Output voltage selection
Output voltage DIP switch 1 DIP switch 2
200 V / 100 V OFF OFF
220 V / 110 V ON OFF
230 V / 115 V OFF ON
240 V / 120 V ON ON

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Output frequency selection
Frequency DIP switch 3
50 Hz OFF
60 Hz ON
To save energy from the battery in no load operation, DIP switch 4 can be used to enable the Power
Saving Mode.
Power Saving Mode
Mode DIP switch 4
Power Saving OFF OFF
Power Saving ON ON
The Power Saving Mode scans the output and compares the detected load to the set threshold
values. When a load is detected which is lower than the Power Save threshold value, the inverter
switches into Power Saving Mode. When a load is detected which is higher than the Wake Up
threshold value, the inverter is switched on.
The threshold values for Power Save and Wake Up are both set with the variable resistor. The
variable resistor is located on the right of the DIP switches. The minimum and maximum threshold
values are described in the following table.
Power saving load adjustment
Threshold type Min Max
Power save threshold 20 VA 110 VA
Wake up threshold 40 VA 160 VA

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8. Operation
LED indicators
Input Voltage Level LED
LED status DC 12 V DC 24V
Red < 11.0 V < 22.0 V
Orange 11.0 ~ 11.5 V 22.0 ~ 23.0 V
Green 11.5 ~ 15.0 V 23.0 ~ 30.0 V
Orange 15.0 ~ 15.5 V 30.0 ~ 31.0 V
Red >15.5 V >31.0 V
Output Load Level LED
LED status Power
Green 0 – 100%
Orange 100 - 115%
Red > 115%
Status LED
Led indication Meaning What to do?
Green
Power OK Normal operation
Red (+ audible beep)
Over Load
Protection
Reduce the load and/or check the
AC wiring for possible short
circuits. Then reset the inverter
manually by switching the main
switch off and on again.

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LED indication Meaning What to do?
Red, slow blinking
DC-input
voltage too
low
Check if DC input voltage too low
because of voltage drop across the
DC cables due to too long or too
narrow cables. Reduce the length
of the DC cables or use cables
with a larger gauge.
Loose or corroded connections:
Tighten the connections; burnt
cables must be corrected
immediately.
Flat battery: Disconnect the load
and recharge the battery
Red, fast blinking
DC-input
voltage too
high
Check battery voltage and switch
off charger.
Orange
Starting Normal operation
Orange, slow blinking
Internal
temperature
too high
Check the airflow through the
inverter. The operation of the
cooling fan may not be blocked.
Orange, fast blinking
Internal
temperature
too low
Check ambient temperature
Other LED indications and possible causes
LED indication Possible cause What to do?
All LED indicators are
off
Main switch is set to the OFF
position
Set the main switch in ON position
Main switch is set to REMOTE
but no remote present
Set the main switch in ON position
The remote switch is off (if
applied)
Close the remote operation switch
DC fuse blown Replace the fuse
All LED blinking green
every 5 seconds
Power save mode Normal operation

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AC Master 12/700-230 AC Master 24/700-230
Product code 28010700 28020700
General specifications
Output voltage 200/220/230/240 Vac (± 3%) –
50/60 Hz (± 0,5%)
200/220/230/240 Vac (± 3%) –
50/60 Hz (± 0,5%)
Output waveform True sine True sine
Nom. battery voltage 12 V 24 V
Cont. power at 40°C, cos phi 1 700 W 700 W
Peak load < 810 W (1 min) < 810 W (1 min)
< 1400 W < 1400 W
AC connection Continental European (SCHUKO) Continental European (SCHUKO)
Efficiency (Max) ≥ 91% ≥ 93%
Display/read-out 3 x LED 3 x LED
Dimensions, hxwxd 200 x 330 x 83 mm 200 x 330 x 83 mm
Weight 2,6 kg 2,6 kg
Approvals CE, Safety: EN60950-1, E-mark:
CISPR25, ISO11452-2, ISO7637-2,
EMC: EN55022, EN55024, EN61000-
3-2; -3-3, EN61000-4,2,3,4,5,6,8,11
CE, Safety: EN60950-1, E-mark:
CISPR25, ISO11452-2, ISO7637-2,
EMC: EN55022, EN55024, EN61000-
3-2; -3-3, EN61000-4,2,3,4,5,6,8,11
Technical specifications
Technology High frequency High frequency
Low battery voltage, switches off at 10,5 V 21,0 V
Low battery voltage, switches on at 12,5 V 25,0 V
High battery voltage, switches off at 16,5 V 33,0 V
High battery voltage, switches on at 14,5 V 29,0 V
Input current (nominal load) 70 A 35 A
No-load power consumption (ON
mode)
< 1,5 A @ 12 V < 0,8 A @ 24 V
No-load power consumption
(Energy Saving mode)
< 0,1 A @ 12 V < 0,06 A @ 24 V
Min. DC fuse (slow blow) 100 A 50 A
Min. cable size 25 mm² 16 mm²
Harmonic distortion typical < 5% < 5%
Cos phi All power factors allowed All power factors allowed
Temperature range (ambient
temp.)
-20°C to 60°C, derating > 40°C
(60°C: 40%)
-20°C to 60°C, derating > 40°C
(60°C: 40%)
Cooling Fan Fan
Protection degree IP21 (if horizontally wall mounted) IP21 (if horizontally wall mounted)
Protections Over temperature, over load, short
circuit, high/low battery voltage
Over temperature, over load, short
circuit, high/low battery voltage
Options
Remote control Yes Yes

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AC Master 12/700-120 AC Master 24/700-120
Product code 28015700 28025700
General specifications
Output voltage 100/110/115/120 Vac (± 3%) –
50/60 Hz (± 0,5%)
100/110/115/120 Vac (± 3%) –
50/60 Hz (± 0,5%)
Output waveform True sine True sine
Nom. battery voltage 12 V 24 V
Cont. power at 40°C, cos phi 1 700 W 700 W
Peak load < 810 W (1 min) < 810 W (1 min)
< 1400 W < 1400 W
AC connection GFCI GFCI
Efficiency (Max) ≥ 91% ≥ 93%
Display/read-out 3 x LED 3 x LED
Dimensions, hxwxd 200 x 330 x 83 mm / 7,9 x 13 x 3,3 in 200 x 330 x 83 mm / 7,9 x 13 x 3,3 in
Weight 2,6 kg 2,6 kg
Approvals Safety: UL458, EMC, FCC Safety: UL458, EMC, FCC
Technical specifications
Technology High frequency High frequency
Low battery voltage, switches off at 10,5 V 21,0 V
Low battery voltage, switches on at 12,5 V 25,0 V
High battery voltage, switches off at 16,5 V 33,0 V
High battery voltage, switches on at 14,5 V 29,0 V
Input current (nominal load) 70 A 35 A
No-load power consumption (ON
mode)
< 1,5 A @ 12 V < 0,8 A @ 24 V
No-load power consumption
(Energy Saving mode)
< 0,1 A @ 12 V < 0,06 A @ 24 V
Min. DC fuse (slow blow) 100 A 50 A
Min. cable size 25 mm² / 4 AWG 16 mm² / 6 AWG
Harmonic distortion typical < 5% < 5%
Cos phi All power factors allowed All power factors allowed
Temperature range (ambient
temp.)
-20°C to 60°C, derating > 40°C
(60°C: 40%)
-20°C to 60°C, derating > 40°C
(60°C: 40%)
Cooling Fan Fan
Protection degree IP21 (if horizontally wall mounted) IP21 (if horizontally wall mounted)
Protections Over temperature, over load, short
circuit, high/low battery voltage
Over temperature, over load, short
circuit, high/low battery voltage
Options
Remote control Yes Yes

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AC Master 12/1000-230 AC Master 24/1000-230
Product code 28011000 28021000
General specifications
Output voltage 200/220/230/240 Vac (± 3%) –
50/60 Hz (± 0,5%)
200/220/230/240 Vac (± 3%) –
50/60 Hz (± 0,5%)
Output waveform True sine True sine
Nom. battery voltage 12 V 24 V
Cont. power at 40°C, cos phi 1 1000 W 1000 W
Peak load < 1150 W (1 min) < 1150 W (1 min)
< 2000 W < 2000 W
AC connection Continental European (SCHUKO) Continental European (SCHUKO)
Efficiency (Max) ≥ 92% ≥ 94%
Display/read-out 3 x LED 3 x LED
Dimensions, hxwxd 200 x 372 x 83 mm 200 x 372 x 83 mm
Weight 3,26 kg 3,26 kg
Approvals CE, Safety: EN60950-1, E-mark:
CISPR25, ISO11452-2, ISO7637-2,
EMC: EN55022, EN55024, EN61000-
3-2; -3-3, EN61000-4,2,3,4,5,6,8,11
CE, Safety: EN60950-1, E-mark:
CISPR25, ISO11452-2, ISO7637-2,
EMC: EN55022, EN55024, EN61000-
3-2; -3-3, EN61000-4,2,3,4,5,6,8,11
Technical specifications
Technology High frequency High frequency
Low battery voltage, switches off at 10,5 V 21,0 V
Low battery voltage, switches on at 12,5 V 25,0 V
High battery voltage, switches off at 16,5 V 33,0 V
High battery voltage, switches on at 14,5 V 29,0 V
Input current (nominal load) 100 A 50 A
No-load power consumption (ON
mode)
< 1,5 A @ 12 V < 0,8 A @ 24 V
No-load power consumption
(Energy Saving mode)
< 0,1 A @ 12 V < 0,05 A @ 24 V
Min. DC fuse (slow blow) 125 A 63 A
Min. cable size 35 mm² 16 mm²
Harmonic distortion typical < 5% < 5%
Cos phi All power factors allowed All power factors allowed
Temperature range (ambient
temp.)
-20°C to 60°C, derating > 40°C
(60°C: 40%)
-20°C to 60°C, derating > 40°C
(60°C: 40%)
Cooling Fan Fan
Protection degree IP21 (if horizontally wall mounted) IP21 (if horizontally wall mounted)
Protections Over temperature, over load, short
circuit, high/low battery voltage
Over temperature, over load, short
circuit, high/low battery voltage
Options
Remote control Yes Yes