SAJ DDSU666 User manual

DDSU666 Single phase electronic
energy meter user manual
1.Overview of products
1.1 Applicable range
The DDSU666 meter mainly applied
into the measurement and display for
the photovoltaic system parameters in
the electric circuit including voltage,
current, power, frequency, power
factor, active energy, etc. The network
can be realized through RS485
communication interface and external
device. Adopting the standard
DIN35mm din rail mounting and
modular design, it is characterized
with small volume, easy installation
and easy networking.
1.Overview of products
1.2 Specification for product model
1.3 Outline & Mounting Dimension
Figure 1.1 Configuration
2.Datasheet
Type
DDSU666
Electrical Characteristics
Application
Single phase
Nominal Voltage[V]
220,230,240
Operating range
0.7~1.2Un
Max. Current [A]
80
Frequency/Range [Hz]
50,60/±5
Power Consumption[W]
≤1
Max. Instant Consumption [VA]
≤5
Physical Parameters
Display
LCD
Communication
RS485
Operating Temperature Range
-40°C~60°C
Ambient Humidity
0-95% Non-condensing
Ingress Protection
IP54
Installation method
mounting rack
Dimensions[H*W*D][mm]
98*36*65
Weight [kg]
0.2
Applicable Standard
CE, RoHS
3.Instructions for installation
3.1 Check the Package
Check whether the product shell in the carton is damaged, if is,
please contact the supplier
3.2 Installation
Directly clip the instrument on the rail and
install it on the distribution box.
(1)When installing, firstly clip one
terminal of the slot and then clip to the
rail with power. (standard DIN35mm)
(2)When disassembling, press the
movable card with a screwdriver and take
out the instrument.
Figure 3.1 Meter installation
3.3 Instruction of wiring terminal
Figure 3.2 Direct connection
Figure 3.3 Meter connection diagram

3.4 RS485 interface of inverter
Figure 3.4 RS485 pin
PinNumber
Description
Effect
1
NC
2
GND_W
Ground wire
3
+7V_W
Power supply
4
NC
5
NC
6
NC
7
RS485-A
Transmission RS485
differential signal
8
RS485-B
Table 3.1 RS485 pin port definition
4.Fault and troubleshooting
Fault
phenomenon
Analysis of
causes
Troubleshooting
Remark
Display fault
The wiring
may not
connected
according to
the wiring
diagram of
the meter
Check if the actual
connection is the same
as the requirement of
the wiring diagram.
Pay special attention to
“N” position of the
voltage, the high & low
end of the current and
terminal labeling are
different from actual
number.
While
checking the
connection, be
sure the meter
is in the state
of
disconnection,
guarantee the
safety of
human life.
Communicati
on fault
The
communicati
on setting
information
of the meter
may be
incorrect
Check if the
communication setting
information such as
communication
address, baud rate,
verification mode is the
same as the PC
settings.
5.Displayed functions
When the energy meter is in normal working condition (on load
state), the positive pulse indicator should be flashed. If long time for
no flashing or light for the indicator, please check whether the wiring
mode of the energy meter is right or not.
Table 5.1 LCD logo meanings
Symbol
Meaning
V
The unit of the voltage, the display data of indicating
LCD is voltage
A
The unit of the current, the display data of indicating
LCD is current
W
The unit of the active power, the display data of
indicating LCD is active power
var
The unit of the reactive power, the display data of
indicating LCD is reactive power
Hz
The unit of the frequency, the display data of
indicating LCD is frequency
kWh
The unit of the active energy, the display data of
indicating LCD is active energy
6.Export limitation function setting
The steps for matching R5 series inverters are as follows:
(1)Download eSolar O&M APP
Web to eSolar website https://fop.saj-electric.com to scan the QR
code and download “eSolar O&M” APP (or download it from
Google Play or App Store by searching “eSolar O&M”). After the
installation on your phone, please login it with your installer account.
(2)Log in APP→ Click “My” → Click “Remote control” → Click
“WiFi” /“Bluetooth”→ Click “Next step”. as shown in Figure6.1.
Please refer to WiFi/GPRS/4G module manual for detailed
connection operation.
(3)Enter “local connect” page and select “Export limitation setting”
→ input password：201561 as shown in Figure6.2.
Figure 6.1 Local connect Figure 6.2 Export limitation setting
(4)Turn on “export limitation”, Wait for 15s countdown seconds to
set successfully，supply the power mode and current mode，as shown
in Figure6.3 and Figure6.4
Figure6.3 Countdown interface Figure6.4 Power limit/Current limit setting
Note:
1.Power mode and current mode could be alternatively selected;
2.The setting parameter cannot exceed the given range value
3.When the setting is completed, the export limitation system will
begin to run.