3.5.1.4 Peak shaving mode (anti-reflux function optional)
1. When PV power is sufficient, do not take power from the utility.
2. When PV power is insufficient：(The power taken from the grid shall not exceed the set upper
limit)
1. Take power from the utility to supply load along with PV, the remaining charge battery.
2. Battery automatically discharge when PV and utility power is not sufficient for load.
3.5.1.5 AC source mode (utility mode)
Under this mode, there is no battery at the output side of PBD and the DC side of PCS. PCS is
rectified to the DC side through the power grid and outputs and outputs stable DC voltage, which
can be adjusted.
3.5.2 Off-grid mode
1. When PV power is higher than load power, PV supply priority to load power, the remaining to
the battery charge.
2. Battery discharge automatically when PV power is lower than load power. when the battery is
discharged to the undervoltage alarm point, there are two situations:
a) Under default setting, the PBD will stop output and switch to PV charging mode. and there
will be no AC output.
b) If DG function is enabled, the PBD sends a relay signal to start the DG, and DG supplies the
load or charges the battery.
3.5.3 Generator mode
I. Generator access function (dry contact control)
In the off grid mode, when the battery is discharged to the under voltage alarm point, PCS sends a
relay signal to start the DG and enter DG mode. The generator will supply power to load; at the
same time, PCS stops supplying power to the load and only charges the battery.
1. When PV power is greater than the charging power, PV power is only used to charge the battery;
the DG only supplies the load.
2. When PV power is less than the charging power, PV supplies priority to battery; DG supplies
power to the load and optionally charges the battery.
3. When the battery is full, PCS sends a signal to stop the DG and switch to off grid mode.
4. When completely off grid, DG can be directly connected to PCS grid terminal; in the case of
utility and DG both exist, it needs to be used with an ATS.
3.5.4 PV mode
1. When utility is unavailable, turn on the knob without clicking the LCD power-on key, PCS will
start to enter PV mode, then PV only charges the battery and will not invert AC output.
2. When utility is unavailable, manually start the LCD screen in PV mode, then PCS enters off grid
mode.
3. In the off grid mode when discharged to the battery low voltage alarm point, PCS will stop
DC/AC converting and automatically switch to PV mode. When battery is charged to the set
voltage, it automatically switches to off grid mode.
4. When the power grid returns normal, PCS automatically switch to grid tie mode.
3.5.5 Automatic on/off grid switch
Operate logic: when the utility is normal, the system automatically connect to grid and disconnect
when utility turns abnormal.
3.5.6 Fault mode
When PBD fails, the contactor on AC and DC sides will immediately disconnect andshut down PBD,
so as to ensure the system safety. At this time, PBD will continuously monitor whether the fault is
eliminated, If not, it will maintain the fault state; after eliminated, it will restart automatically.
3.5.7 Permanent failure mode
When PBD has a serious fault, the contactor on AC and DC sides will immediately disconnect and
enter a permanent fault state to ensure safety of the system. When permanent fault is detected
three times in a row, all switches will be disconnected. For example, the energy storage controller
module of PBD is faulty. When PBD enters this permanent failure mode, please do not repair it
without permission. You should contact the personnel of the local dealer or call Shenzhen Atess
Power Technology Co., Ltd. for help.
When temperature gets too high, output power of PBD will decrease, which is
normal. However, if this happens frequently, check the cooling surface of PBD or
place it in a place with good ventilation condition. If the fan gets dirty, please clean
the dust on it. If there is any problem inside the PBD, please contact the
professional service department for help.
3.6 Instructions for using load
Now PBD series have to be applied with PCS energy storage PBD. PBD only outputs DC, and the
output terminal needs to be connected with battery for voltage stabilization to work normally.
Please keep in mind that PBD output terminal cannot operate without battery.
3.7 Dimension and weight
P BD
2
5
0 P BD3
5
0
8
5
0
X
1900
X
700
mm
1
2
00
X
190
5
X
8
5
0
mm
300
/
3
5
0 600
/
6
5
0
Model
Dimension
（W*H*Dmm）
Weight(net/gross)(kg)
Figure--Demension and weight of PBD
Rated power(kw)
DC load(kw)
P BD
2
5
0 P BD3
5
0
Model
250
250
350
350
If the DC load power is greater than the rated output power of the selected model, it is
recommended to use multiple PBDs for parallel operation.
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