Unipower SLI 15 User manual

USER GUIDE
SLI 15 INVERTER
www.unipowerco.com
Manual No. SLI-15-G-3a © 2018 UNIPOWER LLC
All Rights Reserved
sli15-userguide-rev3a-0718.indd
UNIPOWER LLC • 3900 Coral Ridge Drive, Coral Springs, Florida 33065, USA • [e-mail]
North America: [phone] • Europe: [phone]
POWERING TECHNOLOGY

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POWERING TECHNOLOGY
Manual No. sli-15-G-3a sli15-userguide-rev3a-0718.indd
CONTENTS
1 The Display................................................................................................................................3
2 Startup Sequence and Standby Status........................................................................................4
3 Operating Modes........................................................................................................................5
4 Controller Status ........................................................................................................................5
5 Main Menus...............................................................................................................................6
6 Setting Menus ............................................................................................................................6
7 Status Menu .............................................................................................................................15
8 Info Menu.................................................................................................................................16
Appendix A - Service Menu...........................................................................................................17
Appendix B - Factory Settings.......................................................................................................19

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Manual No. sli-15-G-3a sli15-userguide-rev3a-0718.indd
1 The Display
POWER O.T. FAN FAIL FAULT
Function of keys LEDs for operating status
<UP> / <DOWN> keys
Use to scroll through menus Four front-panel LED’s show inverter status
<UP> key
<DOWN> key
<ESC> key
Use to exit from the current menu
<ENTER> key
Use to confirm a selection or value
<ON/OFF> key
Use to turn ON or Stand-by (OFF) the unit.
O.T.POWER FAN FAIL FAULT
"POWER" (green)
-The "POWER" LED is lighted on as soon as the unit starts
supplying power to the load
-It indicates normal operation.
"O.T." (red)
-When lighted on it indicates that the internal temperature is
approaching the thermal shutdown threshold. In addition to
the visual indication, the unit sounds audibly.
"O.T." and "FAULT" (red)
-The thermal shutdown threshold has been exceeded.
Note: The thresholds are factory set and not changeable
(see "Factory Settings" on "Appendix B").
"FAN FAIL" (red)
-The "FAN FAIL" LED is lighted on when the speed of one of
the fan falls below its nominal value.
"FAULT" and "FAN FAIL"
-They are lighted up at the same time if more than one fan
has stopped or a general malfunction is detected. The unit
continues to works until an OT is detected.
"FAULT" (red)
-"FAULT" LED is lighted on when a general failure happens.
(for general fault conditions see table below)
GENERAL FAILURE CONDITIONS
-Failure of at least 2 fans
-Over Temperature
-Output Over Current
(the protective output breaker on front panel,
trips and a "Breaker OFF" state is indicated on
the display.)
-Output Over Voltage
-Output Under Voltage
-Dc input voltage out of range (UV or OV)
-DC Input Over Current

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Manual No. sli-15-G-3a sli15-userguide-rev3a-0718.indd
2 Startup sequence and the Standby Status
The STAND BY status shows the DC source is connected; loads are disconnected by two internal relays.
As soon as the DC input voltage is applied, "STANDBY…" is displayed.
Three operations are possible (see Fig.1):
(a) Press <ESC> to enter into the SETTINGS menu's first page, or
(b) Press <ENTER> to visualize the configuration mode of the unit. Two screens are presented
automatically within a few seconds. The first (1) shows the mode of the unit (Stand Alone or Parallel
mode). In case of Parallel mode the screen tells whether the unit is master or slave. In case of Stand
Alone mode the units is always a master The second screen (2) shows if the unit has the optional Static
Transfer Switch.
Pressing the "ESC" key shows the SETTINGS menu’s first page, or
(c) Press <ON/OFF> to power up the unit. The display shows "STARTING…" and the screen (3) appeares
automatically after a few seconds. Using <UP> / <DOWN> keys it is possible to scroll six screens on the
display and visualize the electrical parameters (Vout/Iout, Vout/Freq, Iout/Pout,…). Pressing <ENTER>
the screen (1) is visualized for short time, then the display goes back to the previous screen
automatically.
Pressing <ESC> the SETTINGS menu is displayed.
(
2
)
(
1
)
Transfer Switch
….
Vgrid = x.x Vac
Igrid = x.x A
ENTER
ENTER
ESC
(
3
)
Master Ad.1
Parallel Mode 2
STARTING..…
To SETTINGS
Menu
ON/OFF
STAND BY…
ESC
Figure 1
To SETTINGS
Menu
2 Startup sequence and the Standby Status
The STAND BY status shows the DC source is connected; loads are disconnected by two internal relays.
As soon as the DC input voltage is applied, "STANDBY…" is displayed.
Three operations are possible (see Fig.1):
(a) Press <ESC> to enter into the SETTINGS menu's first page, or
(b) Press <ENTER> to visualize the configuration mode of the unit. Two screens are presented
automatically within a few seconds. The first (1) shows the mode of the unit (Stand Alone or Parallel
mode). In case of Parallel mode the screen tells whether the unit is master or slave. In case of Stand
Alone mode the units is always a master The second screen (2) shows if the unit has the optional Static
Transfer Switch.
Pressing the "ESC" key shows the SETTINGS menu’s first page, or
(c) Press <ON/OFF> to power up the unit. The display shows "STARTING…" and the screen (3) appeares
automatically after a few seconds. Using <UP> / <DOWN> keys it is possible to scroll six screens on the
display and visualize the electrical parameters (Vout/Iout, Vout/Freq, Iout/Pout,…). Pressing <ENTER>
the screen (1) is visualized for short time, then the display goes back to the previous screen
automatically.
Pressing <ESC> the SETTINGS menu is displayed.
(
2
)
(
1
)
Transfer Switch
….
Vgrid = x.x Vac
Igrid = x.x A
ENTER
ENTER
ESC
(
3
)
Master Ad.1
Parallel Mode 2
STARTING..…
To SETTINGS
Menu
ON/OFF
STAND BY…
ESC
Figure 1
To SETTINGS
Menu

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POWERING TECHNOLOGY
Manual No. sli-15-G-3a sli15-userguide-rev3a-0718.indd
•
3 Operating modes
The unit has two operating modes:
-Stand Alone mode: there is only one inverter in the system
-Parallel mode: there are several inverters working in parallel (max. number of parallelable units: 8)
The default mode is Stand-Alone.
Trained personnel should set the operating mode before the system starts supplying the load (see SERVICE
menu on "Appendix A").
It is possible but not recommended to change the operating mode while the inverter is operating.
ATTENTION: incorrect unit setting may lead the system to latch up
Notes
When the unit work in Parallel mode it is not possible to change the following parameters in the
SETTINGS menu: Vout, Iout, Frequency. The access to these parameters is locked to avoid system
conflicts (see also Notes on page 8).
4 Controller status
When operating in Parallel mode the controller inside each unit can operate in two modes:
-Master: provides the commands for the whole system of paralleled inverters. There is only one master.
-Slave: it follows the commands of the Master
When working in Stand Alone mode the status of the unit is Master.
Controller statuses are assigned automatically and cannot be changed by the user. In case of failure of the
master in a parallel configuration a new master is selected automatically and control of the system of
paralleled inverters is transferred automatically to the new master.

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Manual No. sli-15-G-3a sli15-userguide-rev3a-0718.indd
5 Main menus
There are 3 main Menus (Fig.2):
-The SETTINGS menu
-The STATUS menu
-The INFO menu
6 The SETTINGS menu
6.1 Overview
Through this menu it is possible to set several parameters of the unit. To avoid problems make sure you
know how the parameters will affect the load.
To access the SETTINGS menu contents a 1ST level password must be provided.
For increased protection certain sensitive parameters are protectyed by a 2ND level password that an
Authorized operator must provide.
Settings changeable by Generic operator (1ST level password)
-Unit Serial Port Address, Vout, Ilimit, Frequency.
-Protections (AutoRestart or Latched types)
-Display Light (ON/OFF), Time Display Light ON and Key Click
-Autostart, Remote ON/OFF
-New Password 1ST level only
Settings changeable by Authorized operator (2ND level password)
These settings are accessible via the SERVICE submenu whose access is protected by the 2ND level
password.
-Operating mode, 2ND levelPassword, Restore data, Utility menu, System Time-out.
These settings are contained in the UTILITY submenu contained in the SERVICE submenu (no password
needed to access UTILITY from SERVICE, see Fig.2 and also Appendix A).
-Change the Led Status (ON/OFF)
-Set the Buzzer (ON/OFF)
-Set the Fans (ON/OFF) and the Fan Speed
-Read fan Speed, System Temperature, Internal Temperature and Ambient Temperature
NOTE:
-The SERVICE submenu should be accessed by trained personnel only. An error in these settings
could seriously damage the system.
-To avoid potential conflicts during the operating procedures, it is preferable to keep the unit in
STANDBY status before accessing and acting on the SERVICE submenu.

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Manual No. sli-15-G-3a sli15-userguide-rev3a-0718.indd
6.2 Navigating the SETTINGS menu
Figure 2
SETTINGS menu
STATUS menu
INFO menu
>> 2nd level Password >> SERVICE submenu
UTILITY submenu
To know the unit configuration (Stand-Alone, Parallel Mode, Master,…)
To get info about the unit's Part Number, Serial Number and Firmware
revision number.
To set the programmable unit parameters
SETTINGS Menu - - >
1.0
Idle for the sub-menu
Navigator
Gives the current position on the menu and sub menu map
X.0 : shows the main menu start page.
X = 1 for SETTINGS menu
X = 2 for STATUS menu
X = 3 for INFO menu.
X.1 or X.2 or X.3 etc.
numbers coming after the point indicate any 1ST level submenu items
X.1.1 or X.1.2 or X.1.3 etc.
n
u
m
be
r
s
co
min
g
a
f
te
r
t
h
e
seco
n
d
po
in
t,
m
a
rk
a
n
y
2ND l
e
v
e
l
sub
m
e
n
u
i
te
m
s
6.2 Navigating the SETTINGS menu
Figure 2
SETTINGS menu
STATUS menu
INFO menu
>> 2nd level Password >> SERVICE submenu
UTILITY submenu
To know the unit configuration (Stand-Alone, Parallel Mode, Master,…)
To get info about the unit's Part Number, Serial Number and Firmware
revision number.
To set the programmable unit parameters
SETTINGS Menu - - >
1.0
Idle for the sub-menu
Navigator
Gives the current position on the menu and sub menu map
X.0 : shows the main menu start page.
X = 1 for SETTINGS menu
X = 2 for STATUS menu
X = 3 for INFO menu.
X.1 or X.2 or X.3 etc.
numbers coming after the point indicate any 1ST level submenu items
X.1.1 or X.1.2 or X.1.3 etc.
n
u
m
be
r
s
co
min
g
a
f
te
r
t
h
e
seco
n
d
po
in
t,
m
a
rk
a
n
y
2ND l
e
v
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l
sub
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u
i
te
m
s

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POWERING TECHNOLOGY
Manual No. sli-15-G-3a sli15-userguide-rev3a-0718.indd
Example:
2
ND
level submenu
1
ST
level submenu
"……" - - >
1.1.2
"……" - - >
1.1.1
SETTINGS Menu - - >
1.0
"……" - - >
1.2
"……" - - >
1.1
Figure 3

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Manual No. sli-15-G-3a sli15-userguide-rev3a-0718.indd
6.3 Structure of the SETTINGS menu
Sub- Menu
2nd Level
Input UV
Input OV
Input UC
Output UV
Output OV
Output OC
1For the Protections operating procedure, please see page 12.
2For the Tranfer Switch operating procedure, please see page 13.
Sub- Menu
3rd Level
Input UV:
Restart xx Times
Input OV:
Restart xxTimes
Input OC:
Restart xx Times
Output UV:
Restart xx Times
Output OV:
Restart xx times
Outpu OC:
Restart xx Times
Protections1
(
*
)
ENT/
ESC Sub- Menu
4th Level
Input UV:
Wait Time xx Sec
Input OV:
Wait Time xx Sec
Input OC:
Wait Time xx Sec
Output UV:
Wait Time xx Sec
Output OV:
Wait Time xx Sec
Output OC:
Wait Time xx Sec
ENT/
ESC ENT/
ESC
Figure 4.1
Up/
Down
SETTINGS Menu - - >
1.0
Sub- Menu
1st Level
Set Address
Set Vout
Set Limit
Set Frequency
Protections1
Display light
Key Click
AUTO-START
Remote ON/OFF
Service
New password
Transfer Switch2
Sub- Menu
2nd Level
Address =xx
Vout =xxx.x Va-c
Ilimit =xxx.x Apk
F =xx.xx Hz
ENT/
ESC
ENT/
ESC
Password
****
ESC
(*)
Light ON/OFF
Key Click ON/OFF
A-S ON/OFF
Remote ON/OFF
See Appendix A
Insert password
STATUS
Sub- Menu 3 Level
ENT/
ESC r
d
INFO Menu Set Voltage Mask
Down
V Mask = xx (%)
Set RMS Voltage
Tolerance Vrms Tol.= xx (%)
F Tol.=xx (%)
Time = xx sec.
Mode X
Connected ON/OFF
Set Frequency
Tolerance
Set Restore Time
Transfer Switch
Operat. Mode2
Manual Switch
Up/
Figure 4

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POWERING TECHNOLOGY
Manual No. sli-15-G-3a sli15-userguide-rev3a-0718.indd
6.4 SETTINGS menu: access and submenus
You can access the SETTINGS menu starting from the STAND BY… status just by pressing the <ESC> key
or, alternatively, the <ENTER> key: see Fig.1 on page 3.
The access is protected by the 1ST level password. The default password is “0000”. To insert the "0"
character press the <ENTER> key on front panel.
With the <UP> and <DOWN> keys you can scroll all the sub-menus listed in Fig.4. Use <ENTER> to select
one of them.
The sequence of the 1ST level submenus with the setting parameters is described below (PROTECTIONS
and SERVICE submenus are addressed on the following pages).
Use <UP> and <DOWN> keys to set the "xx" parameters at the desired value. Then press <ENTER> to
confirm.
SET Vout
Set Vout - - >
1.2
Vout = xxx.x Vac - - >
1.2.1
-To set the Vout value as follows:
230Vac models: from 200Vac to 240V ac with 0.1V resolution
115Vac models: from 100Vac to 121 V ac with 0.1V resolution
- Factory setting:
230Vac models: 230Vac
115Vac models: 115Vac
SET Ilimit
Set Ilimit - - >
1.3
Ilimit = xx.x Apk
1.3.1
-To set the maximum current delivered by the unit
-Setting range:
230Vac models: 1Apk to 8Apk with 0.1A resolution
115Vac models: 0Apk to 14Apk with 0.1A resolution
-Factory setting:
230Vac models: 8 Apk
115Vac models: 14 A
p
k
<ENT> <ENT>
<ENT>
<ENT>
<ENT>
<ENT>
Set Address - - >
1.1 Address= xx - - >
1.1.1
SET Address
-To set the serial port address (Address = "xx").
-The address must be set only when the serial
communication in parallel configuration is used. Otherwise
you can leave the default value.
-Available address range: from 1 to 32
-Default address: 1
Set Backlight Time lenght
Light X
1.6.1
-The back light time lenght can be set from 2 to 60 sec.
- Factory setting: 20sec.
Display Light - - >
1.6
Set Key Click ON/OFF
Key click - - >
1.7
Key Click ON/OFF
1.7.1
-To enable the audible "click" when a key is pressed
-Factory setting: "Click ON"
SET Frequency
f = xx.xx Hz
1.4.1
-Setting range: 47Hz to 63Hz
-Factory setting:
230Vac models: 50Hz
115Vac models: 60Hz
Set frequency - - >
1.4
6.4 SETTINGS menu: access and submenus
You can access the SETTINGS menu starting from the STAND BY… status just by pressing the <ESC> key
or, alternatively, the <ENTER> key: see Fig.1 on page 3.
The access is protected by the 1ST level password. The default password is “0000”. To insert the "0"
character press the <ENTER> key on front panel.
With the <UP> and <DOWN> keys you can scroll all the sub-menus listed in Fig.4. Use <ENTER> to select
one of them.
The sequence of the 1ST level submenus with the setting parameters is described below (PROTECTIONS
and SERVICE submenus are addressed on the following pages).
Use <UP> and <DOWN> keys to set the "xx" parameters at the desired value. Then press <ENTER> to
confirm.
SET Vout
Set Vout - - >
1.2
Vout = xxx.x Vac - - >
1.2.1
-To set the Vout value as follows:
230Vac models: from 200Vac to 240V ac with 0.1V resolution
115Vac models: from 100Vac to 121 V ac with 0.1V resolution
- Factory setting:
230Vac models: 230Vac
115Vac models: 115Vac
SET Ilimit
Set Ilimit - - >
1.3
Ilimit = xx.x Apk
1.3.1
-To set the maximum current delivered by the unit
-Setting range:
230Vac models: 1Apk to 8Apk with 0.1A resolution
115Vac models: 0Apk to 14Apk with 0.1A resolution
-Factory setting:
230Vac models: 8 Apk
115Vac models: 14 A
p
k
<ENT> <ENT>
<ENT>
<ENT>
<ENT>
<ENT>
Set Address - - >
1.1 Address= xx - - >
1.1.1
SET Address
-To set the serial port address (Address = "xx").
-The address must be set only when the serial
communication in parallel configuration is used. Otherwise
you can leave the default value.
-Available address range: from 1 to 32
-Default address: 1
Set Backlight Time lenght
Light X
1.6.1
-The back light time lenght can be set from 2 to 60 sec.
- Factory setting: 20sec.
Display Light - - >
1.6
Set Key Click ON/OFF
Key click - - >
1.7
Key Click ON/OFF
1.7.1
-To enable the audible "click" when a key is pressed
-Factory setting: "Click ON"
SET Frequency
f = xx.xx Hz
1.4.1
-Setting range: 47Hz to 63Hz
- Factory setting:
230Vac models: 50Hz
115Vac models: 60Hz
Set frequency - - >
1.4