Bedford B503DSL Series User manual

B503DSL Series
Solar Photovoltaic Pump Controller
Instruction Manual
GUANGZHOU BEDFORD ELECTRIC EQUIPMENT CO.,LTD.
V2.0.0

CONTENTS
PREFACE....................................................................................................................................I
SAFETY PRECAUTIONS....................................................................................................... II
1 SPECIFICATION................................................................................................................ 1
1.1 Output 3AC 380V........................................................................................................... 1
1.2 Output 3AC 220V........................................................................................................... 1
1.3 Description of Name Plate.............................................................................................. 2
1.4 Selection Guide............................................................................................................... 2
1.5 Parts Description............................................................................................................. 3
1.6 External Dimension.........................................................................................................5
2 INSTALLATION..................................................................................................................6
2.1 Installation Space............................................................................................................ 6
3 WIRING................................................................................................................................7
3.1 Schematic........................................................................................................................ 7
3.2 Solar cell array power supply..........................................................................................8
3.3 Solar cell array and AC power supply............................................................................ 9
3.4 Specifications of breaker, cable.................................................................................... 10
3.5 The wiring of water-level automatic control.................................................................11
3.5.1 The wiring to prevent pump from anhydrous idling........................................... 11
3.5.2 The wiring of reservoir........................................................................................13
4 OPERATION......................................................................................................................16
4.1 Keypad Description.......................................................................................................16
4.1.1 Keypad schematic diagram................................................................................. 16
4.1.2 Key function description.....................................................................................16
4.1.3 Indicator light description................................................................................... 17
4.2 Operation Process......................................................................................................... 17
4.2.1 Parameter setting.................................................................................................17
4.2.2 Fault reset............................................................................................................18
4.3 Running State................................................................................................................18
4.3.1 Power-on initialization........................................................................................ 18
4.3.2 Stand-by.............................................................................................................. 18
4.3.3 Running state.......................................................................................................18
5 PARAMETER FUNCTION..............................................................................................19
6 INITIAL DEBUGGING.................................................................................................... 21
7 TROUBLE SHOOTING................................................................................................... 23
7.1 Fault and trouble shooting.............................................................................................23
7.2 Common Faults and Solutions...................................................................................... 24
8 MAINTENANCE............................................................................................................... 25
8.1 Daily Maintenance........................................................................................................ 25
8.2 Periodic Maintenance....................................................................................................26
8.3 Replacement of wearing parts.......................................................................................26
8.4 Warranty........................................................................................................................26
9 THE PHYSICAL WIRING DIAGRAM..........................................................................28

I
PREFACE
Thanks for choosing our product, we will supply you with considerate service as well as
ever.
This product is suitable for solar photovoltaic pump system, aimed at environmental and
economy market, to replace battery with retain water and without any battery components.
Photovoltaic Pump Controller receives the DC which produced by Solar Modules and then
transform into AC to drive all kinds of pump directly.
It is reaction rapidly, little temperature and humidity influence, balance the system’s
supply and demands, do well in energy-saving, and so on.
●Through adopting advanced MPPT technology, this product can make full use of the
efficiency of the solar cell array.
● It can automatically adjust the motor speed and the water flow along with the intensity of
sunlight.
● Automatic sleep when on high-water level and automatic restart when on low-water level to
realize automatic control through water level.
● Can prevent pump from anhydrous idling.
● It also can enter automatically to sleep mode when the intensity of sunlight is weak (e.g. the
sunset.), as well as can exit the sleep mode when the intensity of sunlight is becoming strong
(e.g. the sun rise.).
● Protect itself in trouble and improve the reliability of whole system.

II
SAFETY PRECAUTIONS
B503DSL is a new power electronic product, please read the operation manual carefully
before using to keep your safety and make sure proper operation.
In this manual, the safety precautions were sorted to “WARNING” and “CAUTION”.
！WARNING: Wrong using may result in death or serious personal injury.
！CAUTION: Wrong using may result in the damage of controller or system.
！WARNING
Please don’t dismantle, change the product, or may cause electric shock, fire hazard
and personal injury;
Please don’t open the cover during the running of controller;
Please don’t put wire, bar of metal, filaments etc. into the controller so as not to
cause a short circuit or get an electric shock;
Please don’t splash water or other liquid over the controller.
CAUTION
Please don’t make withstand voltage testing for the controller;
Never connect AC power to output UVW terminals;
If the internal components of the controller were influenced or damaged by static,
please do not to touch;
The motor, controller and power specifications should be matching, otherwise it
could cause abnormal operation even burn out the device;
If the controller appears serious vibration, noise, heat or peculiar smell in the first
operation, please cut off the power immediately and contact suppliers or service
center later;
Please don’t install the controller in the environment with direct sunlight, rain, frost
or snow in case of deformation or damage.

1
1 SPECIFICATION
1.1 Output 3AC 380V
Maximum input DC voltage
800VDC
Recommended DC input voltage range
420~720VDC
Recommended input working voltage
540VDC
The number of Input port
1
Rated output voltage
3AC 380V
Output frequency range
0~600Hz
Cooling method
Air cooling
altitude
This controller should be installed with
altitude of lower than 1000m.
It will be degraded when the altitude higher
than 1000m. For details, rated output current
should be degraded 1% for every 100m
Standard
CE
1.2 Output 3AC 220V
Maximum input DC voltage
410VDC
Recommended DC input voltage range
220-370VDC
Recommended input working voltage
305VDC
The number of Input port
1
Rated output voltage
3AC 220V
Output frequency range
0~600Hz
Cooling method
Air cooling
Altitude
This controller should be installed with
altitude of lower than 1000m.
It will be degraded when the altitude higher
than 1000m. For details, rated output current
should be degraded 1% for every 100m
Standard
CE

2
1.3 Description of Name Plate
B503DSL-4010
Figure1.1 Nameplate of controller
1.4 Selection Guide
1）Output 3AC 380V
Model No.
Rated Output
Power（kW）
Rated Input
Current（A）
Rated Output
Current（A）
Motor Power
(kW)
Size
Output 3AC 380V
B503DSL-4001
0.75
3.4
2.5
0.75
B
B503DSL-4002
1.5
5.0
3.7
1.5
B
B503DSL-4003
2.2
5.8
5
2.2
B
B503DSL-4005
4.0
10
9
4.0
C
B503DSL-4007
5.5
15
13
5.5
C
B503DSL-4010
7.5
20
17
7.5
D
B503DSL-4015
11
26
25
11
D
B503DSL-4020
15
35
32
15
D
B503DSL-4025
18.5
38
37
18.5
E
B503DSL-4030
22
46
45
22
E
B503DSL-4040
30
62
60
30
E
B503DSL-4050
37
76
75
37
F
B503DSL-4060
45
90
90
45
F
B503DSL-4075
55
105
110
55
F
B503DSL-4100
75
140
150
75
G
B503DSL-4120
90
160
176
90
G
B503DSL-4150
110
210
210
110
G
B503DSL-4180
132
240
250
132
H
B503DSL-4215
160
290
300
160
H
B503DSL-4250
185
330
340
185
I
B503DSL-4270
200
370
380
200
I
B503DSL-4300
220
410
415
220
I
B503DSL-4340
250
460
470
250
I
B503DSL-4380
280
500
520
280
I
B503DSL-4430
315
580
600
315
I
Please contact company for other specification.
Current Vector Control
Controller
Output Voltage Class
4—380V
2—220V
Power Symbol
010—10HP/7.5kW
015—15HP/11kW

3
2）Output 3AC 220V
Model No.
Rated Output
Power(kW)
Rated Input
Current(A)
Rated Output
Current(A)
Motor Power
(kW)
Size
Output 3AC 220V
B503DSL-2001
0.75
5.0
4.5
0.75
A
B503DSL-2002
1.5
7.7
7
1.5
B
B503DSL-2003
2.2
11.0
10
2.2
B
B503DSL-2005
3.7
17.0
16
3.7
C
B503DSL-2007
5.5
21.0
20
5.5
C
B503DSL-2010
7.5
31.0
30
7.5
D
B503DSL-2015
11.0
43.0
42
11.0
E
B503DSL-2020
15
56.0
55
15.0
E
B503DSL-2025
18.5
71.0
70
18.5
E
B503DSL-2030
22.0
81.0
80
22.0
F
B503DSL-2040
30.0
112.0
110
30.0
F
B503DSL-2050
37.0
132.0
130
37.0
F
B503DSL-2060
45.0
163.0
160
45.0
G
B503DSL-2075
55.0
200.0
200
55.0
G
Please contact company for other specification.
1.5 Parts Description
Figure 1.2 Parts of controllers(15kW and below)
Control cable inlet
Installation hole
Operation keypad
Control terminal
Main circuit terminal
Main circuit cable inlet
Cover
Cover buckle
Air vent

4
Figure 1.3 Parts of controllers (18.5kW and above)
Figure 1.4 Dimension(0.75~15kW) Figure 1.5 Dimension(18.5~110kW)

5
Figure 1.6 Dimension (132~315kW)
1.6 External Dimension
Power
（kW）
Size
A(mm)
B(mm)
H(mm)
W(mm)
D(mm)
Installation
Hole (mm
Installation Dimension
External Dimension
0.75~2.2
B
110
169.6
179.6
120.1
150.3
4.0
4~5.5
C
147.4
236
250
160
194.5
5.0
7.5~15
D
205.6
303.6
322
220
193.5
6.0
18.5~30
E
175
455
472
295
222
6.5
37~55
F
230
564.5
580
380
270
7.0
75~110
G
320
738.5
755
465
330
9.0
132~185
H(witho
ut base)
270
1233
1275
490
395
13.0
H(with
base)
-
-
1490
490
395
-
200~315
I(withou
t base)
500
1324
1358
750
402
12.5
I(with
base)
-
-
1670
750
402
-
Please contact company for other specification.

6
2 INSTALLATION
2.1 Installation Space
Figure 2.1 Safe space Figure 2.2 Installation of multiple controllers
Notice: Add the air deflector when apply the up-down installation.

7
3 WIRING
3.1 Schematic
Figure 3.1 Photovoltaic water supply system
Photovoltaic cell
Water Tank
User
B503DSL
Well
Water pump

8
3.2 Solar cell array power supply
Figure 3.2 The solar cell array power supply wiring diagram
Motor-pump
Photovoltaic cell
Attention：B503DSL
2001~2003 Wiring：
The positive pole connect to(+) ，
the negative pole connect to（N）
（+）N
the positive pole the negative pole
4001~4003 Wiring：
The positive pole connect to(+) ，
the negative pole connect to(R)
（+）R
the positive pole the negative pole
B503DSL

9
3.3 Solar cell array and AC power supply
Figure 3.3 The solar cell array and the power frequency power supply wiring diagram
The notes below should be considered for the AC debug
Power On Sequencing:
Disconnect Q2 firstly, and then wait at least 5 minuets until controller discharge (or
digital LED and all indicators extinguish ), then close Q1. Otherwise, will cause the
damage of controller.
Notice:
(1) If there is no protection diode connected to the port of input-bus, it is forbidden
to close photovoltaic cell switch (“Q1”) and power grid switch (“Q2”) at the same time.
Otherwise, will cause the damage of solar panels.
(2) When need to transform the power supply mode from power frequency to
Note: if there is no protection
diode connected to the end of
the photovoltaic DC input, it is
forbidden to close the switches
(Q1 and Q2) at the same time,
otherwise, it will damage the
module of photovoltaic cell
Protection diode
Photovoltaic cell
Motor-Pump
p
Attention：B503DSL
2001~2003 Wiring：
The positive pole connect to(+) ，
the negative pole connect to(N)
（+）N
the positive pole the negative pole
4001~4003 Wiring：
The positive pole connect to(+) ，
the negative pole connect to(R)
（+）R
the positive pole the negative pole
B503DSL

10
photovoltaic cell, you only need to turn off “Q1”firstly and then close “Q2”.
Main circuit terminal functions are summarized according to the terminal to the terminal
symbols in the following table. Wire the terminal correctly for the desired purposes.
Terminal Symbol
Function Description
R、S、T
Terminals of 3 phase AC input
(+)、(-)
Terminals of DC input
U、V、W
Terminals of 3 phase AC output
/PE
Terminals of ground
S1，S2
Input terminals of Water-level detection
signal for the wells
S3，S4
Input terminals of Water-level detection
signal for the reservoir
COM
Input common terminal of water-level
detection signal
3.4 Specifications of breaker, cable
Model No.
Circuit Breaker (A)
Input/ Output Cable (
2
mm
)
B503DSL-2001
16
2.5
B503DSL-2002
20
4
B503DSL-2003
32
6
B503DSL-2005
40
6
B503DSL-2007
63
6
B503DSL-2010
100
10
B503DSL-2015
125
25
B503DSL-2020
160
25
B503DSL-2025
160
25
B503DSL-4001
10
2.5
B503DSL-4002
16
2.5
B503DSL-4003
16
2.5
B503DSL-4005
25
4
B503DSL-4007
25
4
B503DSL-4010
40
6
B503DSL-4015
63
6
B503DSL-4020
63
6
B503DSL-4025
100
10
B503DSL-4030
100
16
B503DSL-4040
125
25
B503DSL-4050
160
25
B503DSL-4060
200
35
B503DSL-4075
200
35
B503DSL-4100
250
70
B503DSL-4120
315
70
B503DSL-4150
400
95

11
B503DSL-4180
400
150
B503DSL-4200
630
185
B503DSL-4250
630
185
B503DSL-4280
630
240
B503DSL-4300
800
150x2
B503DSL-4340
800
150x2
B503DSL-4380
1000
185x2
B503DSL-4430
1200
240x2
Please contact company for other specification.
3.5 The wiring of water-level automatic control
3.5.1 The wiring to prevent pump from anhydrous idling
3.5.1.1 The wiring for floater water-level switch connected by cable
The common port, which using floater water-level switch connected by cable, is fed to
the terminal “COM” of B503DSL controller. And then, select NO (Normally Open )and
connect to “S1” (S1and S2 connected together ). If the NC was connected to “S1”, the
parameter “F0.12 ” should be set as follow: S1=1, S2=1.
Figure 3.4 The low water-level Figure 3.5 The high water-level
Remarks:
When the actual water-level in the wells is higher than the horizontal line of high
water-level, “S1” and “S2” will be connected to the “COM” as well as controller automatically
will start the pump.On the contrary, if the actual water-level is lower than the horizontal line of
low water-level, “S1” and “S2” will be disconnected from “COM” as well as controller
automatically stop the pump to prevent anhydrous idling.
3.5.1.2 The wiring for floater water-level switch connected by rod
The floater water-level switch connected by rod is the normally open contact to output
Low water-level
High water-level

12
and its common wire is connected to the terminal “COM” of B503DSL controller. At the same
time, the low level-water wire is connected to the terminal “S1” of B503DSL controller and
the high water-level wire is connected the terminal “S2”. If the NC was selected, the parameter
F0.12 should be set as follow:S1=1, S2=1.
Figure 3.6 Low water-level Figure 3.7 High water-level
Remarks:
When the actual water-level in the wells is higher than the horizontal line of high
water-level, “S1” and “S2” will be connected to the “COM” as well as controller automatically
start the pump.On the contrary, if the actual water-level is lower than the horizontal line of low
water-level, “S1” and “S2” will be disconnected from “COM” as well as controller
automatically stop the pump to prevent anhydrous idling.
3.5.1.3 The wiring for water-level sensors
There are three signal leads as given (left image)for
detecting water-level. The shortest signal line is ①, which is
corresponding to the horizontal line of high water-level, is
connected to the terminal “S2” of controller. The signal line ②
that is corresponding to the horizontal line of low water- level
need to be connected to the terminal “S1”. The longest line is
③, which is corresponding to the common port is connected to
the terminal “COM” of controller.
Remarks:
When the actual water-level in the wells is higher than the
horizontal line of high water-level, “S1” and “S2” will be connected to the “COM” as well as
controller automatically start the pump. On the contrary, if the actual water-level is lower than
the horizontal line of low water-level, “S1” and “S2” will be disconnected from “COM” as
well as controller automatically stop the pump to prevent anhydrous idling.
Low water-level
High water-level
High
water-level
Low
water-level

13
Notice : if only use one detection signal of water-level in the wells, “S1” and “S2”
must be connected together by conductor.
3.5.2 The wiring of reservoir
3.5.2.1 The wiring for floater water-level switch connected by cable
The common port, which using floater water-level switch connected by cable, is fed to the terminal
“COM” of B503DSL controller. And then, select NC and connect to “S3” (“S3”and “S4” connected
together ). If the NO was connected to “S3”, the parameter “F0.12 ”should be set as follow: S3=1, S4=1.
Figure 3.8 Low water-level Figure 3.9 High water-level
Remarks:
When the actual water-level in the reservoir is lower than the horizontal line of low
water-level, “S3” and “S4” will be disconnected from the “COM” as well as controller
automatically start the pump. On the contrary, if the actual water-level is higher than the
horizontal line of high water-level, “S3” and “S4” will be connected to “COM” as well as
controller automatically stop the pump to prevent water overflow.
3.5.2.2 The wiring for floater water-level switch connected by rod
The floater water-level switch connected by rod is the normally open contact to output
and its common wire is connected to the terminal “COM” of B503DSL controller. At the same
time, the low level-water wire is connected to the terminal “S3” of B503DSL controller and
the high water-level wire is connected the terminal “S4”. If the NC was selected, the parameter
F0.12 should be set as follow:S3=1, S4=1.
Low water-level
High water-level

15
低水位
3.5.3 The wiring for floater water-level switch mounted on a side
The floater water-level switch mounted on a side is the normally open contact to output
and its common wire is connected to the terminal “COM” of B503DSL controller. At the same
time, the low level-water wire is connected to the terminal “S3” of B503DSL controller and
the high water-level wire is connected the terminal “S4”. If the NC was selected,the parameter
F0.12 should be set as follow:S3=1, S4=1.
Figure 3.12 Low water-level Figure 3.13 High water-level
Remarks:
When the actual water-level in the reservoir is lower than the horizontal line of low water-level, “S3”
and “S4” will be disconnected from the “COM” as well as controller automatically start the pump. On the
contrary, if the actual water-level is higher than the horizontal line of high water-level, “S3” and “S4” will
be connected to “COM” as well as controller automatically stop the pump to prevent water overflow.
Notice:
1. If only use one detection signal of water-level in the reservoir, “S3” and “S4” must be
connected together by conductor.
2. It is required to modify the wiring of floater switch’s NC or NO according to the parameter
setting (F0.12).
Low water-level
High
water-level
Detector
switch
of high
water-level
Detector
Switch
of low
Water-level
Detector
switch
of high
water-level
Detector
Switch
of low
Water-leve
B503DSL
B503DSL
B503DSL
B503DSL

16
4 OPERATION
4.1 Keypad Description
4.1.1 Keypad schematic diagram
Figure 4.1 Keypad schematic diagram
4.1.2 Key function description
Button Symbol
Name
Function Description
Programming Key
Entry or escape of first-level menu and remove
parameters quickly
Enter Key
Progressively enter menu and confirm parameters
UP Increment Key
Progressively increase data or function codes
DOWN Decrement Key
Progressive decrease data or function codes
Right Shift Key
In running or standby mode, press this button to select
the parameters to cyclically display. In parameter
setting mode, select the bit to be modified
Left Shift Key
In running or standby mode, press this button to select
the parameters to cyclically display.
In parameter setting mode, select the bit to
bemodified
Fuction indicator light
Unit indicator light
Data enter key
Stop key/Fault reset key
Run key
Program/Escape
Digital modify key
Left Shift key
Digital display
Right Shift key