UTL GAMMA+ Operation instructions

USER & OPERATING MANUAL
22222222
• Controller based design, Pure Sine Wave, Built in rMPPT
Charge Controller.
• Multi-colour LCD Display.
• Freq.:- Available - 50Hz & 60Hz.
• Charging Multi Stage (Bulk, Absorption & Float)
• Solar Priority of load & battery charging.
• Preference to Solar Power over Grid Power.
• Pure sine wave output.
• Protections : RBP, RSPV, OVL, BL, OBC, SC, IHV & ILV.
• Compatible with DG as an input Source.
• Compatible with IT Load.
• Compatible with SMF, Gel & Tubular Batteries.
• Priority Selection - PCU, Smart & Hybrid for Saving Energy
and Money.
ISO
14001 : 2015 ISO
9001 : 2015
UTL UTLUTL
SOLARSOLARSOLARSOLAR
GAMMA
+
GAMMA
+
INBUILT rMPPT

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1
Page
11
23
1
S.No
Safety
Contents
2
3
Installation
System Handling
4
5
Switch Function Flow Chart
Selection of Working Modes
Display Panel Details
Scrolling Display
6
7
Display Back Light Color Description
8
Factory Setting Procedure
9
Block Diagram
Flow Chart
10
11
12
System Description
13
Technical Specification
Operating Instructions
14
15
System Error Description
Troubleshooting
Preventive Maintenance
Warranty Card
16
17
18
12
Calibration Procedure
19

1. SAFETY
1.1. General
1.2. Safety Warnings
1.2.1 Environment
1.2.2 Safety for persons
Hazardous voltage levels are present within the PCU.
PCU should be opened by qualified engineer only.
After the PCU shut down, a dangerous voltage will be present on the battery
terminals.
1.2.3 Safety for Product
Page: 1
Read safety notes carefully and thoroughly to ensure its correct installation and
operation. Save this manual properly.
Installation, maintenance & repair of the equipment should be undertaken by
trained, experienced and authorized service person.
The handling, installation & maintenance of the battery associated with this
equipment, must be done in accordance with the instructions & safety
precautions given by the battery manufacturer. Risk of a possible electrocution
is possible when the battery is connected to the PCU. Therefore, do not forget to
disconnect the batteries ,grid, panel, load before any service is to be done on
the PCU.
To disconnect, remove the battery fuse, disconnect all connections located at
the rear of PCU.
We request you to read the Manual prior installation, performing
start up procedures or system operation or maintenance.
For any information regarding installation/maintenance, Please
Call to on our nearest service center.
PCU packing must be recycled in compliance with regulations. Battery contains
Lead and is dangerous substance for the environment hence same shall be
dispose of by Govt. approved agency only.
The System devices generate a large leakage current, grounding of the PCU &
panel is necessary before connecting power. Improper connection may damage
the device and lead to injuries.
PCU shall not be installed near liquid or with room exceeding specified room
temperature and humidity. Place the PCU in a room with proper ventilation and
safe distance. All ventilation apertures must be kept free and clean. Refer to
manual to perform installation.

2. INSTALLATION
2.1 Receipt of System
When the PCU is received, please carry out visual check for any damage during
transport.
2.2 Positioning and Installation
We are suggesting the distances require to be Solar PCU:
● Minimum distance from the rear wall = 500 mm
● Minimum distance from the top = 500 mm
● Minimum distance from the front wall = 500 mm
If System is installed, then there will be hazardous AC & DC
Voltages on exposed terminals and printed circuit boards. This
condition prevails even when all the switches are OFF.
Please immediately contact Service person, Dealer or Transport
agency for following conditions occur:-
- Any damage observed, either external or internal.
- Any accessory is missing or damaged.
Avoid installing the PCU in location under direct sunlight, running water, or
excessive humidity. Routine preventive check shall be done..
Store the Solar PCU in its original Packing. Ensure the arrow on the box is
pointing vertically upward direction. Store it in dry location. Storage temperature
must be between-10 to 70°C Suitable handling equipment shall be used for
handling of PCU. The route / passage up to the installation site and the actual
foundation location must be capable of supporting the weight of the Solar PCU
and its accessories.
The system must be installed in a dry & clean room. To have proper ventilation,
the user must ensure enough air exchange in the room.
Never install the equipment near liquids or in an excessively damp environment.
Never block the ventilation.
2.3 Electrical Connection
● Ensure proper earthing of the equipment.
● Keep the Battery, Panel,Grid Input & Output disconnect during installation.
● Connect Grid Input, SPV array & Battery supply to PCU.
● Ensure the correctness of the battery & Solar Panel Array supply polarity.
● Connect load cables.
● After complete installation to power up system, Switch ON the System through
reset system, Switch ON SPV, after 30 sec. Solar Charging will be started.
● For this system add External Ckt. Breaker for solar.
Page: 2

3. SYSTEM HANDLING
If the period of PCU installation is over 6 months, be sure to charge batteries for
at least 8 hours before the first use.
2.4 Storage
When the System is not installed immediately, it must be stored carefully in
vertical position, as indicated on the packing and conserved in a dry and
sheltered room. Cover it with an envelope so that it is protected from dust.
● Load will run on Inverter Output.
● After Connecting Mains Supply switch ON the GRID.
Page: 3

3.1 System (Front View)
3.2 System (Back View)
FAN
OUTPUT
1Ø 220V~; 50/60Hz
AC
INPUT
Model No
Serial No
Capacity
DC Volt
Nominal Input
:
:
:
:
:
+VE
VE
-
BATTERY
12V
_
_ _ _
SOLAR
15-45V Max +VE
VE
-
AC
FUSE
BATT. REV./
FUSE BLOWN
DC FUSE
SPV REV.
305.5 mm
115.5 mm
305.5 mm
115.5 mm
Page: 4

4. SWITCH FUNCTION FLOW CHART
PRESS SWITCH
COMBINATION
FOR 15SEC.
Factory Setting Reset
Calibration Menu
SWITCHES
PRESS SWITCH
FOR 10 SEC.
Exit from Calibration
PCU/Smart/Hybrid Mode Selection
SWITCHES
PRESS
1-TIME
UP
DOWN
N/A
HOLD/SAVE/RESUME
SYSTEM ON/OFF
SWITCHES
PRESS
3-TIMES
IT MODE
SMF/
TUB.
BOOST
CHG.
GRID
CHG.
ENABLE
DISABLE
CHANGE
ENABLE
DISABLE
ENABLE
DISABLE
SWITCHES
DG Mode
Page: 5

Grid Chg. LED :- On Pressing Switch 3 times, LED will solid glow shows Grid
Chg. is Disabled. On again pressing this switch 3 times this LED OFF shows that
Grid Chg. is Enabled.
IT Mode LED :- On Pressing Switch 3 times, IT Mode LED will solid glow shows
IT Mode is Enabled. On again pressing this switch 3 times this LED will get OFF
shows that IT Mode is disable.
Boost Chg. LED :- On Pressing Switch 3 times, Boost Charging LED will solid
glow shows Boost Charging is Enabled. On again pressing this switch 3 times this
LED OFF shows that Boost Charging is Disabled.
System ON/OFF LED :- On Pressing Switch 1 time, System will get ON and
when we want to Switch OFF the System we can Press the Switch 1 time.
SMF/TUB :- On Pressing Switch 3 times, SMF/TUB LED will get OFF shows
TUB Battery is Selected. On again pressing this switch 3 times this LED will solid
glow shows that SMF Battery is Selected.
DG Mode LED :- On Pressing Switch 10sec., DG Mode LED will Blinking shows
DG Mode is Enabled. On again pressing this switch 10sec. this LED OFF shows
that DG Mode is Disabled.
Description Of Features
Grid Chg. Enable/Disable :- Whenever customer don’t required mains charging
then he/she needs to disable this feature. At this time PCU run only Load.
Page: 6

View - 1.1
For Example, To select PCU mode from SMT
mode we need to press switch for once.
View - 1.2
To save PCU mode we need to press switch
for once.
View - 1.3
This window shows PCU mode has been selected
as working mode.
SMT
SMT
SMT
HYB
HYB
HYB
PCU
PCU
PCU
PCU
BATT.
5. SELECTION OF WORKING MODES (HYB/SMT/PCU)
View - 1
Now on pressing switch
in to working modes window. This window shows
Smart mode is selected as working mode of the
system. To select any of the working mode out of
HYB/SMT/PCU, we need to press or switch.
for 15 sec. to enter
Page: 7

6. DISPLAY PANEL DETAILS
LCD Display
The Display panel provides all the information related to operating status &
electrical parameters.
Solar - Voltage, Current, Instantaneous power, Status.
Battery - Voltage, Chg. Current.
Input - Voltage, Frequency, Status.
Output - Voltage, Load%, Frequency.
Protection
Indication
& Display
Display
Parameter
System ON, IT-Mode, SMF/TUB, Grid Charging Disable,
Boost Charging, Over Heat, Mains Low/High, DG Mode,
Battery Low/High, Over Load, Frequency Out.
Under/Over voltage for Array & Battery, Array & Battery reverse
polarity, Output Overload, Short circuit, Over Temperature.
7. SCROLLING DISPLAY
PCU
LOAD
PCU
LOAD
Hz
View - 1
PCU Mode, Inverter Output/Load Voltage is 220V.
View - 2
PCU Mode, Inverter Output/Load Frequency is
49.6Hz.
FLT
FLT
220
49.6
Page: 8

View - 4
PCU Mode, Solar Current is 2.0A.
View - 5
PCU Mode, Solar Instantaneous Power is 0.1Kwh.
View - 6
PCU Mode, Mains/Grid/Input Voltage is 250V
PCU
SPV
FLT
a 2.0
PCU
SPV
Kwh
MAINS ON
FLT
FLT
0.1
250v
PCU
View - 7
PCU Mode, Mains/Input Frequency is 50.0Hz.
FLT
MAINS ON
PCU Hz
50.0
PCU
SPV
View - 3
PCU Mode, SPV Voltage 34.7V. FLT
34.7v
PCU
BATT.
FLT
14.1
View - 8
PCU Mode, Battery Voltage is 14.1V for 12V
system.
View - 9
PCU Mode, Battery Charging Current is 2.2Amp.
PCU
BATT.
FLT
A 2.2
Page: 9

View - 7
Communication Error
8. SYSTEM ERROR DESCRIPTION
View - 1
Inverter Open Circuit Error
View - 2
Grid Charger Open Circuit Error
View - 3
NTC Open Circuit Error
View - 4
Feed Back Transformer Error
View - 5
Fuse Blown/Zero Crossing Error
View - 6
Relay Fault Error
FUSE/MCB TRIP
Page: 10

View - 7
GRID Frequency Out
LED BACK LIGHT COLOR DESCRIPTION
When Solar is Present
When Mains Present
When SPV + Mains Present
When SPV and Mains OFF and Only System ON
Error (E1 to E8)
Protection
RED
(SOLID GLOW)
RED
(BLINK)
LIGHT ORANGE
(SOLID GLOW)
ORANGE
(SOLID GLOW)
GREEN
(SOLID GLOW)
LIGHT GREEN
(SOLID GLOW)
9. DISPLAY BACK LIGHT COLOR DESCRIPTION
Page: 11

View - 2
This window shows Factory Setting finally
saved.
10. FACTORY SETTING PROCEDURE
View - 1
After Pressing Switch
for 15 sec. First window will Appear as shown
in Fig. which shows Factory Setting Mode.
Simultaneously
Simultaneously
View - 1
After Pressing Switchs
for 15 sec. First window will Appear as shown
in its adjacent Fig. which shows Battery Low
Set point in CALIBRATION MODE.
SMT BATT.
View - 1.1
Now on pressing switch
multiple times to
decrease Battery Low Voltage set Point minimum
upto 10.0V.
11. CALIBRATION PROCEDURE
L11.0
SMT BATT.
L10.0
Page: 12

View - 1.3
Now on pressing switch battery low voltage
save and go to battery high set point window.
View - 1.2
Now on pressing switch
multiple times to
Increase Battery Low Voltage set Point maximum
upto 11.5V.
SMT BATT.
L11.5
SMT BATT.
H16.5
View - 3
SMT BATT.
H16.5
SMT BATT.
SPV vFLT
Page: 13
View - 2
After saving battery high voltage we will get
battery charging voltage through solar window. In
this window by default 13.7V in float and boost for
SMF battery you can get variable voltage range
13.5-14.5V and Tubular Battery by default
15V(boost), 14.2V(float) and variable range 14-
15.5V(Boost), 13.8-14.5V(float) follow previous
procedure to change charging voltage from solar
is similar as in case of view 1.1,1.2 & 1.3.
After saving battery low set point you will get
battery high set window. In this window you can
get variable battery high voltage range 16.5-
17.5V. To set battery high voltage follow the
previous procedure 1.1,1.2 & 1.3.

View - 5
SMT BATT.
SPV
View - 4
SMT BATT.
MAINS
13.5 BLK
A 18.0 FLT
SMT BATT.
A 10.0
MAINS
View - 6
SMT
F 50Hz
MAINS
View - 7
Page: 14
After saving battery charging voltage through
solar we will get battery charging voltage through
mains window. In this window you can get by
default 13.5V(float & boost) and variable voltage
range 13.5-14.2V. For Tubular Battery by default
14.5V(boost), 13.8V(float) and variable range
13.5-15V(Boost), 13-14.2V(float). Follow
previous procedure to change charging voltage
from mains is similar as in case of view 1.1, 1.2 &
1.3.
After saving battery charging voltage through
mains we will get battery charging current
through solar window. In this window you can get
variable current range 11-40Amp. After change
parameter follow previous procedure(1.1, 1.2 &
1.3)
After saving battery charging voltage through
solar. we will get battery charging current through
mains window. In this window you can get
variable current range 3-15Amp. After change
parameter follow previous procedure(1.1, 1.2 &
1.3)
After saving battery charging voltage through
mains we will get frequency window 50Hz

SMT
1 1.8
MAINS
View - 9
View - 10
To exit from calibration mode, we need to press
switch for 10 sec. A beep will be observed that
will indicate the exit from this mode.
SMT
1 1.8
MAINS
View - 8 MAINS
HZ
Page: 15
Note:- If you want to go next parameter without saving previous. You should press
switch. After change parameter follow previous procedure(1.1, 1.2 & 1.3).
For changing the frequency. Follow previous
procedure(1.1, 1.2 & 1.3).
After saving frequency we will get main
reconnect voltage window. In this window you
can get variable voltage reconnect range 11-12V.
After change parameter follow previous
procedure (1.1, 1.2 & 1.3)

12. BLOCK DIAGRAM
SPV/Solar
Module DC/DC
Converter
DC/AC
Converter Output/
Load
Battery
Mains/Grid/Input
PCU
Page: 16
13 FLOW CHART
13.1 Hybrid Mode
PV OFF
GRID OFF
Load On Batt
PV OFF
GRID ON
PV ON
GRID OFF Load on Batt.+PV
START
CHG. ON PV
CHG. on PV/PV+Grid
Load on Grid
PV ON
GRID ON
Load on Grid
CHG. on Grid

13.2 Smart Mode
BATT. VOLT. > 11.2V
PV OFF
GRID ON
LOAD ON GRID & BATT.
CHG. BY GRID
PV OFF
GRID OFF
LOAD ON
BATTERY
PV ON
GRID OFF
PV POWER >
LOAD POWER
LOAD ON PV
BATT. CHG. BY PV
PV ON
GRID ON
LOAD ON PV + BATT.
LOAD ON GRID
NO
YES
NO
YES
START
BATT. VOLT.>15V/13.7V
OR
13.5V WITH 100% CURR.
PV POWER >
LOAD POWER
YES
NO
YES LOAD ON PV
BATT. CHG. BY PV
LOAD ON PV + BATT.
BATT. VOLT. > 11.5V
NO
YES LOAD ON BATT + SPV
LOAD ON GRID
BATT. CHG. BY SPV
BATT. VOLT. > 11.2V
No
LOAD ON GRID
BATT. CHG. BY GRID + SPV
If
Yes
NO
Page: 17

13.3 PCU Mode
BATT. VOLT. > 11.5V
PV OFF
GRID ON
PV OFF
GRID OFF
LOAD ON
BATTERY
PV ON
GRID OFF
PV POWER >
LOAD POWER
LOAD ON PV
BATT. CHG. BY PV
PV ON
GRID ON
LOAD ON PV + BATT.
LOAD ON BATT.
NO
YES
NO
YES
START
LOAD ON GRID If BATT. VOLT. > 11.2V
Yes
No LOAD ON GRID
BATT. CHG. BY GRID
BATT. VOLT.>15V/13.7V
OR
13.5V WITH 100% CURR.
PV POWER >
LOAD POWER
YES
NO
YES LOAD ON PV
BATT. CHG. BY PV
LOAD ON PV + BATT.
BATT. VOLT. > 11.5V
NO
YES LOAD ON BATT + SPV
LOAD ON GRID
BATT. CHG. BY SPV
BATT. VOLT. > 11.2V
No
LOAD ON GRID
BATT. CHG. BY GRID + SPV
If
Yes
NO
Page: 18