PDM20 Smart Mini Pump Drive
User Manual
Version Code :PDM20-EN-60200256-1612
PDM20 Series
-1-
Preface
Thank you for using PDM20 series products. This manual provides you with
relevant operation instructions and detailed description of parameters. Please read
this manual carefully before installation, running, maintenance or inspection.
Please make sure the wiring and the pump’s rotation direction is correct before use.
PDM20 Series
-2-
CONTENTS
Preface...........................................................................................................
Notes for Safe Operation.............................................................................
Chapter 1 Operation Panel.........................................................................
1.1 Operation Panel Diagram.....................................................................
1.2 Indicator Light.....................................................................................
1.3 Operation and display mode................................................................
1.4 Menu Operation...................................................................................
Chapter 2 Appearance and Wiring.............................................................
2.1 Model Description...............................................................................
2.2 Selection table......................................................................................
2.3Dimensions...........................................................................................
2.4 Installation Procedure Illustrations......................................................
2.5Wiring Diagram of Main Circuit and Control Terminals......................
2.6Control Terminals.................................................................................
2.7 Wiring of Sensors.................................................................................
Chapter 3 Quick Start.................................................................................
3.1 Parameter Settings...............................................................................
According to different types of sensors, setting the parameters as
follows:......................................................................................................
3.2 Pump Rotation Direction Confirmation...............................................
Chapter 4 Programming and Parameters..............................................
PDM20 Series
-3-
4.1Running Display Group........................................................................
4.2Stop Display Group...............................................................................
4.3Pressure and Protection Function Group..............................................
4.4 Frequency and Auxiliary Function Group...........................................
4.5 Parameter Setting Procedure................................................................
4.6 Programming Description of Parameters.............................................
Chapter 5 Fault Information and Troubleshooting..................................
5.1 Fault Codes Description.......................................................................
5.2 Common Faults and Actions................................................................
Chapter 6 Typical Application Guide.........................................................
6.1 Single Pump Control............................................................................
Appendix.......................................................................................................
PDM20 Series
-4-
Notes for Safe Operation
Read this instruction manual thoroughly before installation, operation,
maintenance or inspection of the smart pump drive. In this manual, safe operation
are classified as “WARNING” or “CAUTION”.
SPD: Abbreviation of smart pump drive.
WARNING
Indicate a potentially dangerous situation which, if not avoided, could result in death or
serious injury to personnel.
CAUTION
Indicate a potentially dangerous situation which, if not avoided, could result in minor or
moderate injury and damage to equipment. It may also be used for warning against
unsafe practices.
Even items described as ( CAUTION) may result in a vital accident in some
situations. Please follow these important notes:
Before Installation
WARNING
Do not install or operate any SPD that is damaged or has missing parts. Otherwise, it
may result in equipment damage or harm life.
PDM20 Series
-5-
Installation
Hold the bottom of the SPD when install or move the SPD, cannot just hold the shell to
prevent the injured or broken SPD.
SPD must be far away from heat source, flammable and explosive objects, and installed on
metal or other nonflammable objects.
If the SPD is mounted in a protective cabinet, the cabinet need to set vents to ensure ambient
temperature is below 40℃; otherwise it may be damaged because of high temperature.
Wiring
Ensure only qualified personnel to operate. Otherwise it can cause an electrical shock or
damage of the SPD.
Make sure the SPD is isolated from power supply by the circuit breaker. Otherwise it may
cause a fire.
Make sure that the ground terminal is grounded correctly. Otherwise it can cause an
electrical shock.
Please do not touch the main circuit terminal, and the main circuit terminals of the SPD do
not contact the shell. Otherwise it may cause an electrical shock.
Before connecting, make sure that the SPD rated voltage, phase number confirm to input
voltage, phase number; Otherwise it may cause fire or personal injury.
Never connect the AC input power supply to output terminals V, U, W; Otherwise the SPD
will be damaged and the guarantee is invalid.
Never perform with stand voltage test of the SPD, otherwise it may cause a damage to the
SPD.
The main circuit wiring of the SPD and the control loop wiring should be separated or
PDM20 Series
-6-
Run
Turn on the input AC power only after the front cover is put correctly; Do not open or
remove the front cover when operation. Otherwise it may cause an electric shock.
If the function fault automatic reset or restart after power failure had been set, a safety
measures should be taken in advance; otherwise it may cause damage or injury.
The key “RUN/STOP” may be lose efficacy because some function had been set, a separate
emergency power switch can be installed in the SPD control system; otherwise it may cause
damage or injury.
When the SPD is power on, the SPD terminal is still live even in stop state, do not touch,
otherwise there is a risk of electric shock.
Do not use circuit breaker to control the stop or start of the SPD; Otherwise it may cause
damage to the SPD.
Because the SPD speed from low to high that is in a very short time, make sure that the
motor and equipment are in the permitted range to use. Otherwise it may cause damage to
the equipment.
Do not touch the heat sink. Otherwise it may cause harmful burns
The factory parameters of the SPD can meet most requirements of equipment operation, if
not necessary, please do not modify the parameters. Even though some equipment has
special needs, only necessary parameters can be modified. Otherwise, random
modifications may cause damage to the device.
vertical crossed, otherwise it will make the control signal interference.
The cable connected to the main circuit terminals should be use lugswith isolated casing.
If the length of cable between the SPD and the motor is more than 50 meters, it is
recommended touse a output reactor to protect the SPD and motor.
PDM20 Series
-7-
Maintenance and check
When power on, do not touch the connection terminals. Otherwise it may cause an
electrical shock.
Only qualified electrical engineering personnel can maintain, replace and inspect the SPD.
Wait at least 10 minutes after the power failure, or make sure that is no residual voltage
before carry out maintenance and inspection, otherwise it may cause damage.
PCB board has CMOS integrated circuit, do not touch, otherwise the static electricity may
damage PCB board.
Others
It is strictly forbidden to transform the SPD, otherwise it may cause casualties. After
arbitrarily changing SPD, the guarantee will be invalid.
PDM20 Series
-8-
Chapter 1 Operation Panel
1.1 Operation Panel Diagram
(1) ▲▼keys: Used to setting pressure values, switching parameters display and
modifying parameters. In the “stop” status, it can be used to modify the pressure
setting; In the “running” status, it can be used to switch running frequency,
pressure setting and feedback pressure back and forth.
(2) “MENU”: Pressing it for two seconds to transfer parameter mode from status
display mode.
(3)“RUN/STOP”: In status display mode without unacknowledged alarm, used as
start and stop switch button between running and stop; When an alarm arise and
fault code is displayed, used to acknowledge and reset alarm;In parameter setting
mode, used to enter menu and confirm parameter setting.
PDM20 Series
-9-
1.2 Indicator Light
(1) RUN: running indicator light
Steady light: running instruction
Blinking light: sleep instruction
Steady off: stop instruction
(2) ALAM :fault indicator light
Drive faults or alarms
1.3 Operation and display mode
(1) Status display mode:
When power on the SPD, it enters the status display mode. When it stops, it
displays pressure setting. Press "▲"or"▼"to modify pressure setting. When it is
running,it displays current pressure, operating frequency, and setting pressure.
Press the "▲"or"▼" to switch the display; press "MENU" for two seconds to
enter the parameter setting mode.
(2) Parameter setting mode:
To view or set the parameters, as starting from status display mode, press the
"MENU" for 2 seconds to enter the parameter setting mode, and then press the
"RUN / STOP" starts to set parameters. After you set the parameter press twice
"MENU" to exit parameter setting mode, and return to the status display mode.
(3) The alarm display mode:
Automatically enter this mode when a drive fault or warning arises; press the
"RUN / STOP" to reset, or it can automatically restored the previous mode after
the alarm is eliminated.
PDM20 Series
-10-
1.4 Menu Operation
Three-class menus are:
①
Function group (first class)
②
Function code setting(second class)
③
Function code setting(third class)
Instruction: In the third class menu, pressing “MENU” or “RUN/STOP” can return
to the second class menu. The difference is that pressing “RUN/STOP” first saves
parameters to control board, and then returns to the second class menu and shifts to
next function code automatically; pressing “MENU” returns to the second class
menu directly without saving parameters and keeps staying at current function
code.
Under the third class menu, only flicker bit can be modified. Revisable bit will
shift automatically after 5 seconds.
Note: For parameters marked with “
●”, please modify them in stopped state.
Parameters marked with “
◎” are actual detected and recorded values which can’t
be modified.
PDM20 Series
-11-
Example: Modify P0.02 from 0 to 1
Remarks: 0.1MPa = 100kPa = 1bar = 1kgf / cm
2
PDM20 Series
-12-
Chapter 2 Appearance and Wiring
2.1 Model Description
2.2 Selection table
Inverter type
Rated
power
Input
current
output
current
Adaptation motor
power
（kW）
(A) (A)
（kW）（HP）
PDM20-2SR37
0.37 5 2.5 0.37 0.5
PDM20-2SR55
0.55 7 3.5 0.55 0.75
PDM20-2SR75
0.75 9 4.5 0.75 1
PDM20-2SR90
0.9 10 5 0.9 1.2
PDM20-2S1R1
1.1 11 5.5 0.9 1.5
PDM20-2S1R5
1.5 14 7 1.5 2
PDM20-2S2R2
2.2 20 10 2.2 3
PDM20 Series
-13-
2.3Dimensions
(Unit: mm)
136
116
176
158
114
105
124
138
PDM20 Series
-14-
2.4Installation Procedure Illustrations.
Step 1: Remove the iron plate at the bottom of the drive
Step 2: Install the baseplate to the motor
Fasten the fixing plate
above the electrical-box
of the motor
PDM20 Series
-15-
Step 3: Fix the drive on the plate
Fix the drive on
the plate
Step 4: Finish installation
Fasten the drive to the fixing board with screws
Fasten the drive to
the fixing board
with screws
PDM20 Series
-16-
2.5Wiring Diagram of Main Circuit and Control Terminals
Note:
Terminals:
◎ refers to main circuit;
Terminals:
○ control loop terminals
2.6Control Terminals
2.6.1 Control terminals
The wiring mode of control terminals is internal terminal wiring or outer lead
connection, cabled-out by waterproof connectors.
M1 M2 GND +VO AI
Control terminals
PDM20 Series
-17-
2.6.2 Terminal instruction
Terminal
symbol
Terminal name Technical data
M1
Multi-function
input terminal 1
Enabled when connected to GND; Disabled when open
M2
Multi-function
input terminal 2
Enabled when connected to GND; Disabled when open
AI
Analog input
terminal 1
It is 0 ～10V analog voltage input terminal or 4-20mA
analog current input terminal, chosen by function codes.
+Vo
Positive terminal
of analog power
+5V～+24V adjustable power; Output voltage value is set
by function codes.
GND
Negative terminal
of analog power
Reference zero potential of +5V～+24V adjustable power
2.7 Wiring of Sensors
2.7.1 Terminal instruction
◆
+VO ---5
～
24V Power terminal for transmissible pressure gauge/pressure
transmitter
◆
AI ---0～10V analog signal input terminal (voltage feedback type) or 4～20mA
signal input terminal (current feedback type)
◆
GND --- 5～24V signal common terminal
2.7.2 Sensor configuration instruction
A current type pressure sensor will be used by default; output signal is 4~20mA. If
use other types of sensors, please refer to the setting parameters P0.03，P0.04
，
P0.05 in Chapter 4.5.
2.7.3 Wiring diagram
The drive can be connected to transmissible pressure gauge and pressure
transmitter. Please connect wire according to below diagrams.
PDM20 Series
-18-
(1) Transmissible pressure gauge: working voltage 10VDC, output 0～10VDC.
Wiring method is shown as below.
(2) Pressure transmitter: working voltage range 10
～
30V, output 4
～
20mA.Wiring method is shown as below.
Notes: Model for PDM20-2SXXXLN products will be equipped with dedicated
sensors (red line connected to terminal +VO; black line connected to terminal AI).
For the wiring method of various sensors and the setting of relevant parameters,
please refer to appendix.
PDM20 Series
-19-
Chapter 3 Quick Start
3.1 Parameter Settings
According to different types of sensors, setting the parameters as follows:
Sensor works as this type. Taking 10V power supply voltage, 4-20mA feedback
signal, 1.6MPa pressure range, required water pressure of 4.0bar (4.0kgf/cm2) as
an example, the following parameters should be set:
P0.00 = 4.0 Pressure setting
P0.03 = 16.0 Maximum range of sensor
P0.04 = 1 Sensor feedback type (pressure transmitter)
P0.05 = 10.0 Input voltage of sensor
P0.14 = 11 Auto-start, fault self-reset
3.2 Pump Rotation Direction Confirmation
Make a short-time trial operation after setting parameters to see whether the
rotation direction is right or not. The direction can be changed by the following
two methods:
(1) Stop the drive and exchange arbitrary two phases of drive output power lines U,
V, W.
(2) Stop the drive and modify parameterP0.02.
PDM20 Series
-20-
Chapter 4 Programming and Parameters
Note: “○”: The parameter can be modified in both standby and operating state.
“
●”: The parameter can’t be modified in operating state.
“
◎”: The parameter is the actual detected and recorded value which can’t be
modified.
4.1Running Display Group
Press “▲”“▼” key to modify pressure setting
Display Name Description Unit Remarks
P Current pressure Pressure value of actual operation bar
◎
H Running frequency Current running frequency Hz
◎
d Set pressure Set pressure bar
◎
4.2Stop Display Group
Press“▲”“▼”key to modify pressure setting
Display Name Description Unit Remarks
d Set pressure Set pressure bar
◎
PDM20 Series
-21-
4.3Pressure and Protection Function Group
Function
code
Description Set range Unit Default
Display
level
Modific
ationlev
el
Notes
P0.00
Pressure
setting
0.0～
P0.03
bar 3.0
0
○
P0.01
Startup
pressure
derivation
0.0～
P0.00
bar 0.3 ○
Wakeup from standby
when the pressure is
lower than PID set
pressure
P0.02
Running
direction
0：
Forward
1：
Reverse
0 ●
Rotation direction can
be changed by
modifying this
parameter
P0.03 Sensor range
0.1～
500.0
bar 10.0 ○
The maximum range of
sensor
P0.04
Sensor
feedback type
0～11 ○
0：Voltage feedback
1：Current feedback
Set the type of sensor
P0.05
Power setting
of sensor
0.0～25.0 V 25.0 ○
Working voltage of
sensor. Set required
voltage directly
P0.06
Proportional g
ain
0.00～
900.0
% 20.0 ○
The bigger the
parameter, the faster the
pressure system
responses. If it is set too
high, the system will
oscillate. It needs to be
set according to
different water supply
system.
P0.07 Integral gain
0.01～
60.00
0.90 ○
Integral time of PID
system
PDM20 Series
-22-
Function
code
Description Set range Unit Default
Display
level
Modific
ationlev
el
Notes
P0.08
PID sleep
function
choices
0：Sleep
invalid
1：Sleep
mode 1
2：Sleep
mode 2
2 ○
Mode 1: Use pressure,
current, frequency to
judge standby
Mode 2: Automatic
standby
P0.09
PID sleep
detection
delay
0.0～
3600.0
s4.0 ○
In small water
consumption, if
sleeping is slow or it
can’t sleep, make the
value smaller; if it
sleeps in advance or it
starts and stops
frequently, make the
value bigger.
P0.10
PID wakeup
detection
delay
0.0～
3600.0
s0.0 ○
PIDwakeup detection
delay
P0.11
Low level
hold
frequency of
PID sleeping
detection
0.0～
60.00
Hz 30.00 ○
RPID runs at sleep
holding frequency.
After the time P0.12,
PID enters sleeping
mode.
P0.12
Running time
of
PIDLow level
hold
frequency
0.0～
3600
s3.0 ○
Running time at low
frequency in sleep
mode 1
P0.13
PID sleep
deviation
pressure
0.0～
P0.01
bar 0.1 ○
When actual pressure is
larger than (set pressure
minus sleep deviation
pressure), system starts
to handle with sleep.
PDM20 Series
-23-
Function
code
Description Set range Unit Default
Display
level
Modific
ationlev
el
Notes
P0.14
Automatically
start self-reset
at power on
00～11 10 ○
Ones：auto-start choices
0：OFF
1：ON
Tens：fault self-reset
choices
0：OFF
1：ON
By default, self-reset is
ON and auto-start is
OFF.
P0.15
Self-starting
delay at
power on
0.0～
100.0
s5.0 ○
Delay time before
auto-start at power on
P0.16 Antifreeze
0：OFF
1：ON
0 ○
Self anti-freezing
function of pump
P0.17
Anti-freezing
running
frequency
0.0～
60.00
Hz 8.00 1 ○
P0.18
Anti-freezing
running time
0～60 s 60 1 ○
P0.19
Anti-freezing
running cycle
60～9999 s 300 1 ○
When it is set as 0, it
keeps running at
anti-freezing running
frequency
P0.20
Water leakage
coefficient
0.0～
100.0
2.0 ○
The bigger the water
leakage, the bigger the
coefficient.
P0.21
Set value of
high pressure
alarm
0.0～
P0.03
bar 8.0 ○
When feedback
pressure is bigger than
or equal to the set value,
after the delay of P0.22,
it alarms and stops.
P0.22
Detection
time of high
pressure alarm
0.0～
200.0
s3.0
PDM20 Series
-24-
Function
code
Description Set range Unit Default
Display
level
Modific
ationlev
el
Notes
P0.23
Set value of
low pressure
alarm
0.0～
P0.21
bar 0.0 ○
When feedback
pressure is smaller than
the set value, after the
delay of P0.24, it alarms
and stops. This function
is invalid when it is set
to 0.
P0.24
Detection
time of low
pressure alarm
0.0～
200.0
s3.0 ○
P0.25
Water
shortage
protection
00～11 10 1 ○
Ones：judge water
shortage according to
frequency, current
0：OFF
1：ON
Tens：judge by pressure
0：OFF
1：ON
By default, pressure
judgment is ON.
P0.26
Water
shortage fault
detection
threshold
0.0～
P0.00
bar 0.5 1 ○
It judges water shortage
only when feedback
pressure is smaller than
the set value.
P0.27
Water
shortage
protection
detection
frequency
0～60.00 Hz 45.00 1 ○
It is valid when
P0.25 =01.
Comparison frequency
of water shortage
judgment. When
running frequency is
larger than this
frequency, it starts to
judge water shortage.
PDM20 Series
-25-
Function
code
Description Set range Unit Default
Display
level
Modific
ationlev
el
Notes
P0.28
Current
percentage of
water shortage
protection
detection
0.0～
100.0
% 40.0 1 ○
It is valid only when
P0.25=01.
Percentage of motor
rated current. When
running current is
smaller than this
current, it judges as
water shortage.
P0.29
Water
shortage
protection
detection time
0～900.0 s 20.0 ○
P0.30
Self-restarting
delay of water
shortage
protection
0～9999 min 15 1 ○
If it is set to be 0, use
pressure to self-reset
water shortage.
P0.31 Self-sleep rate 1～30 3 1 ○
Increase this value
when the system can’t
sleep.
P0.32
Inflow
detection
pressure
0.0～
P0.00
bar 1.0 1 ○
After inflow pressure is
larger than detection
pressure time
(P0.33),water shortage
fault is automatically
reset.
P0.33
Inflow
detection time
0.0～
100.0
s1.0 1 ○
P0.34
Lower limit of
AI
0.0～
P0.35
V/mA 4.00 ○
P0.35
Upper limit of
AI
P0.34～
20.00
V/mA 20.00 ○
P0.36
Acceleration
time
0.1～
3600
s5.0 ○
P0.37
Deceleration
time
0.1～
3600
s3.0 ○
PDM20 Series
-26-
Function
code
Description Set range Unit Default
Display
level
Modific
ationlev
el
Notes
P0.38
Parameter
initialization
0～200
●
0：No operation
1：Reset to factory
defaults
2：Clear fault records
P0.39
Parameter
lock
0～10 ○
If it is set to be1, P1
group parameters will
be hidden.
PDM20 Series
-27-
Function
code
Description Set range Unit Default
Display
level
Modific
ationlev
el
Notes
P0.40
Current fault
type
0～29 ○
0：No fault
1：Inverter unit
protection（E001）
2：Over current in
acceleration（E002）
3：Over current in
deceleration（E003）
4：Over current at
constant speed（E004）
5：Over voltage in
acceleration（E005）
6：Over voltage in
deceleration（E006）
7：Over voltage at
constant speed（E007）
8：Hardware
overvoltage（E008）
9：Under voltage fault
（E009）
10：SPD overload（E010
）
11：Motor overload（E
011）
12：Reserved
13：Output phase loss
（E013）
14：Radiator
overheating（E014
）
15：External water
shortage（E015）
16～17：Reserved
18：Current detection
fault（E018）
19～21：Reserved
22：EEPROM fault（E02
2）
PDM20 Series
-28-
Function
code
Description Set range Unit Default
Display
level
Modific
ationlev
el
Notes
P0.40
Current fault
type
0～29 ○
23：Over torque fault
（E023）
24：Broken line fault of
PID feedback (E024)
25：Running time
reaches. (E025)
26：Reserved(E026)
27：Water shortage
alarm(E027)
28：High pressure
alarm(E028)
29：Low pressure
alarm(E029)
P0.41
Radiator
temperature
0～100 ℃ 01◎
P0.42
Software
version
0 ◎
P0.43
Frequency
command
choices
0～88 ●
0：Digital setting
1～7：Reserved
8：Water supply PID
4.4 Frequency and Auxiliary Function Group
Function
code
Description Set range Unit Default
Display
level
Modifi
cation
level
Notes
P1.00
Pressure
setting
0.0～
P1.03
bar 3.0
0
○ Same as P0.00
P1.01
Start
pressure
deviation
0.0～
P1.00
bar 0.3 ○ Same as P0.01
P1.02
Running
direction
choices
0：Forward
1：Reverse
0 ● Same as P0.02
PDM20 Series
-29-
Function
code
Description Set range Unit Default
Display
level
Modifi
cation
level
Notes
P1.03
Sensor
range
0.1～
500.0
bar 10 ○ Same as P0.03
P1.04
Sensor
feedback
type
0：Voltage
feedback
1：Current
feedback
1 ○ Same as P0.04
P1.05
power
setting of
sensor
0.0～25.0
V25.0 ○ Same as P0.05
P1.06
Upper limit
of running
frequency
P1.07～
60.00
Hz 50.00 ○
P1.07
Lower limit
of running
frequency
0.0～
P1.06
Hz 0.00 ○
P1.08
Action
choices
when
running
frequency
is lower
than lower
limit
frequency
0～2
2 ○
0：Run at lower limit
frequency
1：Stop
2：Standby
P1.09
Carrier
frequency
setting
1.0～15.0
kHz
Set by
model
○
The value can be
adjusted properly to
adjust motor noise
PDM20 Series
-30-
Function
code
Description Set range Unit Default
Display
level
Modifi
cation
level
Notes
P1.10
Feedback
broken line
detection
value
0～1.00
V0.10
When running
frequency reaches
MAX. running
frequency, after PID
feedback broken line
detection time (5s by
default), if PID
feedback value is still
smaller than PID
feedback broken line
detection value, it will
report feedback broken
line fault
P1.11
Feedback
broken line
detection
time
0～3600.0
s5.0
The function is invalid
when it is set as 0
P1.12
Motor rated
power
0.2～4.0
kW
Set by
model
●
Set according to motor
nameplate
P1.13
Motor rated
frequency
10～
60.00
Hz
Set by
model
●
Set according to motor
nameplate
P1.14
Motor rated
speed
0～36000
rpm
Set by
model
●
Set according to motor
nameplate
P1.15
Motor
ratedvoltag
e
0～480
V 220 ●
Set according to motor
nameplate
P1.16
Motor rated
current
0.1～
400.0
A
Set by
model
●
Set according to motor
nameplate
P1.17
User
password
0000 ～
9999
1 ○
P1.18
Function
choices of
M1
terminal
0～25
11●
0：No function
1：Run
2～6：Reserved
PDM20 Series
-31-
Function
code
Description Set range Unit Default
Display
level
Modifi
cation
level
Notes
7：Fault reset
8：Pause
9：External fault input
（water shortage）
10～24：Reserved
25：PID control pause
P1.19
Function
choices of
M2
terminal
91●
P1.20
VDI
function
choices
●
P1.33
PWM
Mode
0～2
01○
P1.34
Start/stop
signal
choices
0～1
01○
0：Start/stop by
keyboard
1：Start/stop by
terminals
PDM20 Series
-32-
4.5 Parameter Setting Procedure
Taking the commonly used parameters of P0.00 - P0.05 as an example, the
parameters setting steps are as follows.
Set P0.00 (Pressure setting)
Notes: Pressing
“▲”or“▼”
to modify the setting pressure as 4.0 in the stop
displayed status
Set P0.01 (Startup pressure derivation)
Set P0.02 (Running direction)
PDM20 Series
-33-
Set P0.03 (Sensor range)
4.0 P0 P0.00 P0.03 10
RUN/
STOP
16
P0.04
P0 4.0
MENU
RUN/
STOP
RUN/
STOP
MENU
MENU
Set P0.04 (Sensor f eedback type)
Set P0.05 (Power setting of sensor)
PDM20 Series
-34-
4.6 Programming Description of Parameters
P0.00 Pressure setting
0.0～P0.03
bar 3.0
P0.03 Sensor range 0.0～200.0 bar 10.0
The maximum range
of sensor
P0.04 Sensor feedback type
0：Voltage feedback
1：Current feedback
1
P0.05 Power setting of sensor
0.0～24.0
V10.0
P0.03 is the range of the sensor. Common range is 1MPa, namely 10.0bar.
P0.00 is the pressure value of the pipe network. If P0.00=3.0bar, after the smart
pump drive is started, the pressure of the pipe network keeps constant at 3.0 bar.
General sensor is in current type. The wiring method of SPD is similar to
pressure transmitter, connected to AI terminal as pressure feedback: if voltage
sensor is use, please modify P0.04 to 0. The wiring method of SPD is similar to
transmissible pressure gauge, connected to AI terminal as pressure feedback.
Note: because working voltage of sensor is different, before using, set working
power source of the sensor by P0.05; besides, make sure test result is precise. Set
range of the sensor P0.03 according to sensor parameters.
When feedback value is smaller than or equal to set pressure minus PID start
pressure（P0.00-P0.01）, and it holds the state in P0.10 set time, PID adjustment
will be restarted. For example, when P0.00=3，P0.01=0.3，P0.10=5.0, if feedback
value is smaller than or equal to 2.7, and the time is longer than 5s, PID adjustment
will be restarted. Once it is larger than 2.7, the time will recount.
P0.01 Start pressure deviation 0.0～P0.00 bar 0.3
The value that is lower
than PID set pressure
P0.10
PID wakeup detection
delay
0.0～120.0 s 1.0
PID wakeup detection
delay
PDM20 Series
-35-
In initial use, confirm the rotation direction of motor. Exchange arbitrary two lines
of output power line U, V, W of the SPD or modify parameter P0.02 to change the
rotation direction of the motor.
P0.06
Proportional
gain
0.0～100.0 % 20
The larger the parameter, the faster the response
speed of the pressure system. However, when it
is set too big, the system will oscillate. Adjust it
according to different water supply system.
Adjustment method:
If factory parameters can’t meet demands, adjust parameters finely. First increase
proportional gain to make sure that the system will not oscillate.
Note: improper parameter setting of P0.06 will cause huge speed overshoot, and
even over voltage fault in overshoot back.
P0.02
Running direction of
motor
0：Forward
1：Reverse
0
Modify this parameter to
change running direction
PDM20 Series
-36-
P0.08 PID sleep choices 0～22
0：Sleep invalid
1：Sleep mode 1
2：Sleep mode 2
P0.09
PID sleep detection
delay
0.0～
120.0
s1.0
In small water consumption, if
sleeping is slow or it can’t sleep,
make the value smaller; if it sleeps
in advance or it starts and stops
frequently, make the value bigger.
P0.10
PID wakeup detection
delay
0.0～
120.0
s 1.0 PID wakeup detection delay
P0.11
PID sleep low level hold
frequency
0.00～
60.00
Hz 35.00
PID runs at sleep low level hold
frequency. After the time of P0.12,
PID sleeps.
P0.12
Running time at PID
low level hold
frequency
0.00～
3600
s3.0
P0.13
PID sleep deviation
pressure
0.0～
P0.01
bar 0.1
If feedback pressure is in sleep
deviation range, start sleeping
treatment.
PDM20 Series
-37-
After selecting sleep mode 1 by parameter P0.08, the SPD will detect whether
feedback pressure is higher than set pressure. If yes, the SPD will start sleep
detection. After PID sleep detection delay set by P0.09, if feedback pressure is still
higher than set pressure, SPD will decrease output frequency gradually to sleep
detection low level hold frequency set by P0.11. After sleep detection low level
hold frequency waiting time, if feedback pressure is still higher than set pressure,
the SPD decreases output frequency to 0Hz and enter standby. If in above process,
feedback pressure is lower than set pressure, the SPD will judge as invalid sleep
detection and come back to PID adjustment status.
When sleep mode 2 is selected, the system will try to sleep according to water
consumption condition automatically.
After the SPD enters standby, if feedback pressure is lower than PID sleep
threshold, SPD will start wakeup detection. After PID wakeup detection delay set
by P0.10, if feedback pressure is still lower than wakeup pressure threshold,
wakeup is successful and SPD comes back to PID adjustment status; else, wakeup
fails. Too high PID sleep threshold may cause frequent start and stop of the SPD.
Too low PID sleep threshold may cause deficient pressure.
Notes: sleep holding frequency of different water supply system is different. When
there is no water outside and the water tap is turned off, but the pump is still
running, increase P0.11 to sleep holding frequency.
P0.14
Automatically
start self-reset at
power on
Ones：Auto-start choices
0：OFF
1：ON
Tens：Fault self-reset choices
0：OFF
1：ON
10
By default, self-reset is
ON and auto-start is
OFF.
P0.15
Auto-start delay
at power on
0.0～100.0
s5.0
Delay time before
auto-start at power on
PDM20 Series
-38-
If you hope that the SPD can start automatically after time delay set by P0.15 at
power on, after setting all parameters, make P0.14 = 11 to enable auto-start
function of the SPD. Every time at power on or fault reset, it will start
automatically.
P0.16 Antifreeze
0：OFF
1：ON
0
Self anti-freezing function of
pump
P0.17
Anti-freezing
running frequency
0.0～60.00
Hz 8.00
P0.18
Anti-freezing
running time
0～9999
s60
P0.19
Anti-freezing
running interval
0～9999
s300
When it is set as 0, it keeps
running at anti-freezing running
frequency
Set P0.16=1 to enable anti-freezing function. The SPD will adjust the running
frequency of pump according to current status after it is started.
Note:
Pump auto-adjusting given frequency is prior to anti-freezing frequency.
Anti-freezing frequency can’t be set to high. It should be set as the frequency
that can just drive the pump but can’t supply pressure.
P0.20
Water leakage
coefficient
0.0～100.0
2.0
The bigger the water leakage, the bigger
the coefficient.
In no water consumption, because of water leakage of pipe network, the SPD can’t
sleep and stop. It starts and stops frequently. To solve the water leakage problem of
pipe network, modify the value of P0.20 according to water leakage. The bigger
the water leakage, the bigger the coefficient.
PDM20 Series
-39-
P0.21
Set value of high
pressure alarm
0.0～P0.03
bar 8.0
When feedback pressure is bigger
than or equal to the set value, after
the delay of P0.22, it alarms and
stops.
P0.22
Detection time of
high pressure alarm
0.0～200.0
s3.0
P0.23
Set value of low
pressure alarm
0.0～P0.21
bar 0.0
When feedback pressure is smaller
than the set value, after the delay of
P0.24, it alarms and stops. This
function is invalid when it is set to
0.
P0.24
Detection time of
low pressure alarm
0.0～200.0
s3.0
The SPD will compare P0.21 and P0.23 according pipe network pressure fed back
by sensor. If pressure is abnormal, it will stop and alarm automatically to protect
pipe network system.
P0.25
Water shortage
protection
00～
11
10
Ones：judge water shortage
according to frequency, current
0:OFF
1:ON
Tens：judge by pressure
0:OFF
1:ON
P0.26
Water shortage fault
detection threshold
0.0～
P0.00
bar 0.5
It judges water shortage only when
feedback pressure is smaller than
the set value.
P0.27
Water shortage
protection detection
frequency
0～
60.00
Hz 45.00
It is valid when P0.25 = 01.
Comparison frequency of water
shortage judgment.
P0.28
Current percentage of
water shortage
protection detection
80～
300.0
% 150.0
It is valid only whenP0.25=01.
Percentage of motor rated current.
P0.29
Water shortage
protection detection
time
0～
900.0
s 20.0
PDM20 Series
-40-
P0.30
Self-restarting delay of
water shortage
protection
0～
9999
min 15
If it is set to be 0, use pressure to
self-reset water shortage.
Following methods can realize water shortage protection by default:
（1）
The switch of water shortage protection is turned on（P0.25=1x）;
（2）
The feedback pressure is less than allowed threshold value of water shortage
detection(feedback pressure<P0.26);
（3）
The current running frequency is no less than water shortage protection
detection frequency（running frequency>=P0.27）;
（4）
When
（1）-（3）
are satisfied, timing starts. When the time meeting the
condition exceeds abnormal pressure alarm delay time (delay time>P0.29), water
shortage fault will be reported. When either condition is not satisfied during timing,
timing recounts.
When water shortage fault is reported, after the time set by P0.30, the drive will
reset. By setting the next following parameters:
P0.32 Inflow detection pressure
0.0～P0.00
bar 1.0
P0.33 Inflow detection time
0.0～100.0
s1.0
PDM20 Series
-41-
Use inflow detection pressure to reset water shortage faults directly.
Note:When judge water shortage according to pressure, because the working
condition of each drive is different such as range of load size, only setting the
value of P0.28 reasonably according to site conditions can it make correct
judgment to water shortage.
Setting method: Run the drive. When running frequency reaches maximum
frequency, turn off inlet and record the output current displayed on the drive.
Divide this current by P1.16 (the rated current of the motor) to get a percentage.
Make the value of P0.28 a little higher than 5-10 percentage points of the
percentage. Too high value of P0.28 will lead to false water shortage report in
normal operation. Water shortage protection will not work effectively with too low
value of P0.28.
P0.34
Lower limit of
AI input signal
0.0～
P0.35
V/mA 4.00
Used to correct lower limit of AI
signal
P0.35
Upper limit of
AI input signal
P0.34～
20
V/mA 20.00
Used to correct upper limit of AI
signal
If you find there is some deviation between sensor feedback pressure and feedback
pressure displayed on SPD, adjust above parameter to correct the sensor.
Note: the unit of current sensor is 4~20mA; that of voltage sensor is 0~10V.
P0.36 Acceleration time
0.1～3600
s5.0
P0.37 Deceleration time
0.1～3600
s3.0
Acceleration/deceleration time setting of the pump’s motor.
P0.38 Parameter initialization
0～2
0
When P0.38 is set as 1, restore factory defaults.
PDM20 Series
-42-
P0.39 Parameter lock function
0～1
0
After setting parameters, if you don’t want them to be modified by misoperation,
make P0.39= 1. At this time, parameters can only be monitored, but not be
modified. Only when P0.39 is modified to 0, can parameters be modified.
P0.40 Current fault type
0～29
Record fault type of the SPD. 0 means no fault. 1～29 refers to E001～E029. For
more details, please refer to fault inspection and troubleshooting chapter.
P1.34
Start/stop signal
choices
0～1
0
0：Start/stop by keyboard
1：Start/stop by terminals
P0.43
Frequency source
choices
0～8
8
0：Digital setting
1～7：Reserved
8：Water supply PID
Each SPD can choose different start/stop modes and frequency sources.
P1 group parameters have the same meaning as P0 group. Please refer to P0 group
for more details.
P1.06 Upper limit frequency
P1.07～60.0
Hz 50.00
P1.07 Lower limit frequency
0.00～P1.06
Hz 0.00
P1.08
Action choices when
running frequency is lower
than lower limit frequency
0：Run at lower limit frequency
1：Stop
2：Standby
2
PDM20 Series
-43-
P1.06 limits the maximum working frequency of SPD.
Use P1.08 to choose running status of SPD when running frequency is lower than
lower limit frequency. To prevent motor from being in low speed operation for a
long time, you can use this parameter to stop it.
If use a 60Hz pump, please set parameters according to the following steps.
Step 1: Set the parameter P1.06 (Upper limit frequency) to 60
Step 2: Set the parameter P1.13 (Motor rated frequency) to 60
P1.09 Carrier frequency setting
1.0～15.0
kHz Set according to models
Use this parameter to adjust carrier frequency of SPD. You can decrease motor
noise by adjusting carrier frequency, avoid point of resonance, decrease leakage
current of wires to ground and decrease interference of SPD.
When carrier frequency is high, motor loss decreases, temperature rising of motor
is small, but SPD loss increases, temperature rising of SPD increases and
interference increases.
PDM20 Series
-44-
P1.10 Feedback broken line detection value
0.0～1.00
V0.10
P1.11 Feedback broken line detection time
0.0～3600
s5.0
Feedback broken line detection value: the detection value is relative to input signal
voltage. System keeps detecting PID feedback value. When feedback value is
smaller than or equal to feedback broken line detection, system starts detection
timing. When detection timing exceeds feedback broken line detection time,
system will report PID feedback broken line fault.
P1.12 Motor rated power
0～4.0
kW Set according to models
P1.13 Motor rated frequency
0.01～60.00
Hz Set according to models
P1.14 Motor rated speed
0～36000
rpm Set according to models
P1.15 Motor rated voltage
0～280
V Set according to models
P1.16 Motor rated current
0.1～40
A Set according to models
Please set according to parameters of the motor nameplate.
To guarantee control performance, please configure motor according to standard
adaptive motor of drives. If there is big difference between motor power and
standard adaptive motor, control performance of drives will decrease obviously.
PDM20 Series
-45-
Chapter 5 Fault Information and
Troubleshooting
5.1 Fault Codes Description
Fault
code
Fault type Possible reasons Solution
E001
Invert cells
fault
1．Too fast acceleration 1．Increase acceleration time
2．IGBT inside broken 2．Seek for support
3．Malfunction caused by
interference
3．Check whether peripheral
equipments have strong interference
source
4．.Sound grounding or not 4．Check grounding line
E002
Over
current in
accelerated
running
1．Too fast acceleration 1．Increase acceleration time
2．Too low grid voltage 2．Check input power
3．The power of the SPD is too
low
3．Use bigger power SPD
E003
Over
current in
decelerated
running
1．Too fast deceleration 1．Increase deceleration time
2．The inertia torque of load is
too big.
2．Add proper dynamic braking
modules
3．The power of the SPD is too
low
3．Increase power of the SPD
E004
Over
current in
constant
speed
running
1．Saltation or abnormality
happens to load
1．Check the load or decrease the
saltation of the load
2．The grid voltage is too low 2．Check input power supply
PDM20 Series
-46-
Fault
code
Fault type Possible reasons Solution
3．The power of the SPD is too
low
3．Use bigger power SPD
E005
Over
voltage in
accelerated
running
1．The input voltage is abnormal 1．Check input power supply
2．Restart rotating motor after
momentary outages
2．Avoid restarting after it is stopped
E006
Over
voltage in
decelerated
running
1．Too fast deceleration 1．Increase acceleration time
2．The inertia of load is too big 2．Increase dynamic braking modules
3．The input voltage is abnormal. 3．Check input power
E007
Over
voltage in
constant
speed
running
1．Abnormal changes happen to
input voltage
1．Install input reactor
2．The inertia of load is too big
2．Add proper dynamic braking
modules
E008
Hardware
over
voltage
1．The input voltage is abnormal 1．Check input power supply
2．Too fast deceleration 2．Increase deceleration time
3．The inertia of load is too big 3．Increase dynamic braking modules
E009
Bus under
voltage
1．The grid voltage is too low 1．Check grid input power supply
E010
Controller
overload
1．Too fast acceleration 1．Increase acceleration time
2
．Restart rotating motor 2．Avoid restarting after it is stopped
3．The grid voltage is too low 3．Check grid voltage
PDM20 Series
-47-
Fault
code
Fault type Possible reasons Solution
4．Overload 4．Use bigger power SPD
E011
Motor
overload
1．The grid voltage is too low 1．Check grid voltage
2．Wrong setting to motor rated
current
2．Reset motor rated current
3．Motor stall or big changes to
load
3．Check the load and adjust torque
lifting capacity
4．Motor is too small 4．Use proper motor
E013
Output
phase loss
U,V,W phase loss output(or the
three phases of load is not
symmetrical)
1．Check output wiring
2．Check motor and cable
E014
Module
overheatin
g
1．Instant over current of SPD 1．Refer to over current solutions
2．Output three phases have
interphase or ground is short
circuit
2．Re-wiring
3．Air passage block or fan
broken
3．Dredge air passage or change fan
4．The environmental
temperature is too high
4．Decrease environmental
temperature
5．SPD wire or plugins loose 5．Check and re-connect
6．Power circuit irregularity 6．Seek for service
PDM20 Series
-48-
Fault
code
Fault type Possible reasons Solution
8．Control board exception
E015
External
water
shortage
Water shortage is detected Check whether water is deficient.
E018
Fault of
current
detection
circuits
1．Poor contact of control board
connector
1．Check connector and re-plug
2．Power circuit irregularity
2．Seek for service
3．Damage to hall devices
4．Exception of amplifying
circuit
E022
EEPROM
read write
faults
1．Read write of control
parameter goes wrong
1．Press RUN/STOP key to reset
2．EEPROM broken 2．Seek for service
E023
Torque
rich
1．Too fast acceleration 1．Increase acceleration time
2．Restart rotating motor 2． Avoid restart rotation motor
3．Grid voltage is too low 3．Check grid voltage
4．Load is too heavy 4．Use big power SPD
E024
PID
feedback
broken line
fault
1．Sensor broken line or poor
contact
1．Check the installation and wiring of
sensor
2．Broken line detection time is
too short
2．.Increase broken line detection time
3．The sensor is broken or the
system has no feedback signal
3．Change sensor
PDM20 Series
-49-
Fault
code
Fault type Possible reasons Solution
E025
Running
time
reaches set
time
1．Running time reaches set time 1．Seek for service
E026 Reserved Reserved Reserved
E027
Water
shortage
alarm
1．Water pressure/level exception
1．Check whether the pressure of
inlet is abnormal or not
2．Sensor broken line or poor
contact. System has no feedback
signal
2．Check the installation and wiring of
sensor
3．Water shortage alarm detection
time is too short（P0.29）
3．C heck relevant parameter settings
4．Water shortage protection
frequency is too low(P0.27)
5．Water shortage protection
detection current is too
low(P0.28)
E028
High
pressure
alarm
1．Feedback signal of senor
exception
1．Check the wiring of sensor
2．High pressure alarm value
adjustment is too low（P0.21）
2．Check relative parameter settings
3．Alarm detection time
adjustment is too short（P0.22）
E029
Low
pressure
alarm
1．Low pressure alarm value is
set too high（P0.23）
1．Modify parameters
2．Sensor broken line or poor
contact. System has no feedback
signal
2．Check the sensor
PDM20 Series
-50-
Fault
code
Fault type Possible reasons Solution
3．Sensor type is inconsistent
with actual situation
PDM20 Series
-51-
5.2 Common Faults and Actions
The following faults may happen in use. For brief fault analysis, please refer to the
following methods.
5.2.1 No display at power on
(1) Check whether the input power is consistent with the nominal voltage of the
drive with multimeter.
(2) Check whether the three-phase rectifier bridge is intact. If the rectifier bridge is
broken down, please request service.
5.2.2 The power air switch trips off at power on.
(1) Check whether there is short circuit or ground connection between input power.
If yes, please eliminate it.
(2) Check whether the rectifier bridge has been broken down. If yes, please request
service.
5.2.3 The motor doesn’t rotate after the SPD runs.
(1) Check whether there is balanced three-phase output among U, V,W. If yes,
check whether the motor is broken or blocked. If no, please confirm whether the
motor parameters are set correctly.
(2) If there is output but the three-phase power is not balanced, please request
service.
(3) If there is no output voltage, please request service.
5.2.4 SPD shows normally at power on but the power air switch trips off after
running.
(1) Check whether short circuit occurs between output modules interval. If yes,
please request service.
PDM20 Series
-52-
(2) Check if there is short circuit or ground connection between motor leads. If yes,
please eliminate it.
(3) If switch stripping off occurs occasionally and the distance between motor and
inverter is far, consider to add output AC reactor.
5.2.5 It doesn’t stop in no water use.
(1) Check whether the feedback pressure displayed on the SPD board is no less
than set pressure. If the feedback pressure is less than set pressure, please check
whether the range of the pressure sensor is set correctly, whether the pump rotates
reversely, whether there is air and whether the inlet is blocked by sundries.
(2) If the feedback pressure is no less than set pressure, please decrease the set
value of P0.09 and increase P0.11.
(3) If feedback pressure changes nearby set value, stop the SPD manually and see
whether the pressure decreases. If yes, check valve needs to be changed.
5.2.6 It can’t sleep in small amount of water use or leakage
(1) If it can’t sleep or the sleep time is too long, decrease P0.09 and increase P0.11,
If it is still not effective, increase P0.31.
(2) If it sleeps in advance, first increase P0.09. If it is still not effective, decrease
P0.20.
(3) If it starts and stops frequently, first increase P0.09. If it is not effective,
increase P0.20. If it is still not effective, increase P0.01.
5.2.7 It can’t stop to make protection in water shortage.
(1) Water shortage protection switch P0.25 is not enabled.
(2) The threshold value of water shortage detection P0.26 is set too low.
(3) The current percentage of water shortage detection P0.28 is set too low.
PDM20 Series
-53-
Chapter 6 Typical Application Guide
6.1 Single Pump Control
Condition Requirement Parameter setting
Pipe network pressure 3.0bar P0.00 = 3.0
Water shortage protection mode
Switching value sensor is
installed at inlet.
Input by external
terminals
PDM20 Series
-54-
Appendix
Types of pressure sensor wiring diagram
1. Transmissible pressure gauge wiring diagram
Transmissible
pressure gauge
1
2
3
地
Terminal 1 connected to GND
Terminal 2 connected to +VO
Terminal 3 connected to AI
PDM20-Transmissible pressure gauge wiring diagram
M1 M2 GND +VO
AI
Before connecting, check the
voltage between +VO and GND
using a multimeter
1.Installation and wiring:
Connect the power cable
and the sensor cable
according to the diagram
.
2.Set pressure parameters:
P0.38=1;
P0.03=10;
P0.04=0;
P0.05=6
3.Set target pressure:
P0.00=3.0;
P0.01=0.3
4.Choose auto-start mode:
P0.14=11
8.Warm tips
a: Water supply system
must be equipped with a
check valve, five way valve
is a kind of check valve.
b: For a new pump,when it
runs without pressure,
emptying is suggested.
7.Sleep test:
Close the water outlet, the
drive output frequency will
be reduced until shutdown;
if it can not sleep, please
refer to the common fault
handling tutorial.
6.Observe the effect of
constant pressure:
Observe the effect of
constant pressure, if the
pressure is constant, that is
OK; if the pressure
fluctuations large , please
reference common fault
handling tutorial.
5.Check rotation direction
of pump:
Shortly start pump, check
the direction of pump, if
the pump direction error,
change the pdrameter
P0.02.
PDM20 Series
-55-
2. Three wire 10V sensor wiring diagram
PDM20-Three wire 10V sensor wiring diagram
Pressure
transmitter
Power: 10VDC
Range: 0-1Mpa
Output:4-20mA
Type: PT1101
Power line
：
red
Singal line
：
green
Ground line
：
balck
M1 M2 GND +VO AI
2.Set pressure parameters:
P0.38=1
P0.03=10
P0.04=1
P0.05=10
3.Set target pressure:
P0.00=3.0
P0.01=0.3
Before connecting, check the
voltage between +VO and GND
using a multimeter
Black line connected to GND
Red line connected to +VO
Green line connected to AI
1.Installation and wiring:
Connect the power cable
and the sensor cable
according to the diagram
.
4.Choose auto-start mode:
P0.14=11
8.Warm tips
a: Water supply system
must be equipped with a
check valve, five way valve
is a kind of check valve.
b: For a new pump,when it
runs without pressure,
emptying is suggested.
6.Observe the effect of
constant pressure:
Observe the effect of
constant pressure, if the
pressure is constant, that is
OK; if the pressure
fluctuations large , please
reference common fault
handling tutorial.
5.Check rotation direction
of pump:
Shortly start pump, check
the direction of pump, if the
pump direction error, change
the pdrameter P0.02.
7.Sleep test:
Close the water outlet, the
drive output frequency will
be reduced until shutdown;
if it can not sleep, please
refer to the common fault
handling tutorial.
PDM20 Series
-56-
3. Two wire sensor wiring diagram
M1 M2 GND +VO AI
Warm tip: For a 9-36V power supply pressure transmitter,
it is recommended to use 24V power supply
2.Set pressure parameters:
P0.38=1
P0.03=16
P0.04=1
P0.05=24
3.Set target pressure:
P0.00=3.0
P0.01=0.3
4.Choose auto-start mode:
P0.14=11
5.Check rotation direction
of pump:
Shortly start pump, check
the direction of pump, if the
pump direction error,
change the pdrameter P0.02.
6.Observe the effect of
constant pressure:
Observe the effect of
constant pressure, if the
pressure is constant, that is
OK; if the pressure
fluctuations large , please
reference common fault
handling tutorial.
8.Warm tips
a: Water supply system
must be equipped with a
check valve, five way
valve is a kind of check
valve.
b: For a new pump,when it
runs without pressure,
emptying is suggested.
PDM20-Two wire 9-36V sensor wiring diagram
Pressure
transmitter
Type： PT1100
Power
：
9-36VDC
Range
：
0-1.6Mpa
Output
：
4-20mA
Power line
：
red
Singal line
：
green
Red line connected to +VO
Green line connected to AI
Before connecting, check the
voltage between +VO and GND
using a multimeter
1.Installation and wiring:
Connect the power cable
and the sensor cable
according to the diagram.
7.Sleep test:
Close the water outlet, the
drive output frequency will
be reduced until shutdown;
if it can not sleep, please
refer to the common fault
handling tutorial.
PDM20 Series
-57-
4. Three wire 24V sensor wiring diagram
M1 M2 GND +VO AI
2.Set pressure parameters:
P0.38=1
P0.03=10
P0.04=1
P0.05=24
3.Set target pressure:
P0.00=3.0
P0.01=0.3
4.Choose auto-start mode:
P0.14=11
5.Check rotation direction
of pump:
Shortly start pump, check
the direction of pump, if
the pump direction error,
change the pdrameter
P0.02.
6.Observe the effect of
constant pressure:
Observe the effect of
constant pressure, if the
pressure is constant, that is
OK; if the pressure
fluctuations large , please
reference common fault
handling tutorial.
8.Warm tips
a: Water supply system
must be equipped with a
check valve, five way valve
is a kind of check valve.
b: For a new pump,when it
runs without pressure,
emptying is suggested.
PDM20-Three wire 24V sensor wiring diagram
Pressure
transmitter
Type: PT1100
Power: 24VDC
Range: 0-1Mpa
Output: 4-20mA
Power line
：
red
Singal line
：
green
Ground line
：
balck
Black line connected to GND
Red line connected to +VO
Green line connected to AI
Before connecting, check the
voltage between +VO and GND
using a multimeter
1.Installation and wiring:
Connect the power cable
and the sensor cable
according to the diagram.
7.Sleep test:
Close the water outlet, the
drive output frequency will
be reduced until shutdown;
if it can not sleep, please
refer to the common fault
handling tutorial.
PDM20 Series
-58-
V1.1
Inverter
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