Unipower SLI 15 User Manual

POWERING TECHNOLOGY

USER GUIDE

SLI 15 INVERTER

Manual No. SLI-15-G-3a

sli15-userguide-rev3a-0718.indd

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All Rights Reserved

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North America: [phone] • Europe: [phone]

POWERING TECHNOLOGY

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

Manual No. sli-15-G-3a

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1 The Display

Function of keys LEDs for operating status

POWER O.T. FAN FAIL FAULT

<UP> / <DOWN> keys

Use to scroll through menus

<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.

FAN FAIL

O.T.POWER

FAULT

Four front-panel LED’s show inverter status

"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 thre

shold. 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)

Manual No. sli-15-G-3a

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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POWERING TECHNOLOGY

2 Startup sequence and the Standby Status

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)

(3)

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.

ENTER

STAND BY…

ESC

To SETTINGS

Menu

ON/OFF

STARTING..…

ENTER

Figure 1

Manual No. sli-15-G-3a

Vgrid = x.x Vac
Igrid = x.x A

Page 4

Master Ad.1

Parallel Mode 2

Transfer Switch

….

ESC

To SETTINGS

Menu

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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.

Manual No. sli-15-G-3a

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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 1
For increased protection certain sensitive parameters are protectyed by a 2
Authorized operator must provide.

Settings changeable by Generic operator (1

- Unit Serial Port Address, V

- Protections (AutoRestart or Latched types)

- Display Light (ON/OFF), Time Display Light ON and Key Click

- Autostart, Remote ON/OFF

- New Password 1

Settings changeable by Authorized operator (2

These settings are accessible via the SERVICE submenu whose access is protected by the 2
password.

- Operating mode, 2

ST

level password must be provided.

ST

level password)

, I

out

ST

level only

ND

levelPassword, Restore data, Utility menu, System Time-out.

, Frequency.

limit

ND

level password)

ND

level password that an

ND

level

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.

Manual No. sli-15-G-3a

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