dooch NSQ-0075S User manual
INSTRUCTION MANUAL
NSQ Drive
Warning
Caution
Safety Instructions
Preface
Thank you for choosing DOOCH’s high performance NSQ-Drive series.
Describing specification, installation, operation, function, and maintenance of the NSQ-Drive
series provided for the users who are familiar with and having basic experience in using a
variable frequency drive.
Be sure to understand function, performance, installation, and operation of the product by
reading through this User's Manual completely prior to your use of NSQ-Drive series that
you have purchased. In addition, you are required to have this User's Manual properly
delivered to the end-user and maintenance manager.
Safety Precautions
Remark
To prevent injury and property damage, follow these instructions. Incorrect operation
due to ignoring instructions will cause harm or damage.
The seriousness of which is indicated by the following symbols.
Even if the instructions are indicated as ‘Caution’, it can cause a serious result according to the kind
of operation and the environment.
The meaning of each symbol in this manual and on your equipment is as follows.
Warning :
This symbol indicates the possibility of death or serious injury.
Caution :
This symbol indicates the possibility of injury or damage to property.
Do not remove the cover while power is applied or the unit is in operation.
Otherwise, electric shock could occur.
Do not run the inverter with the front cover removed.
Otherwise, you may get an electric shock due to high voltage terminals or
charged capacitor exposure.
Do not remove the cover except for periodic inspections or wiring, even if
the input power is not applied.
Otherwise, you may access the charged circuits and get an electric shock.
Wiring and periodic inspections should be performed at least 10 minutes
after disconnecting and after checking the DC link voltage is discharged
with a meter (below DC 30V).
Otherwise, you may get an electric shock.
Operate the switches with dry hands.
Otherwise, you may get an electric shock.
Do not use the cable when its insulating tube is damaged.
Otherwise, you may get an electric shock.
Do not subject the cables to scratches, excessive stress, heavy loads or
pinching.
Otherwise, you may get an electric shock.
Install the VFD on a non-flammable surface. Do not place flammable
material nearby.
Otherwise, fire could occur.
Disconnect immediately the input power if the inverter gets damaged.
Otherwise, it could result in a secondary accident and fire.
After the input power is applied or removed, the VFDwill remain hot for
a couple of minutes.
Otherwise, you may get bodily injuries such as skin-burn or damage.
Do not apply power to a damaged inverter or to the VFD with parts missing
even if the installation
Otherwise, electric shock could occur.
Do not allow lint, paper, wood chips, dust, metallic chips or other foreign
matter into the drive.
Otherwise, fire or accident could occur.
Caution
Warning
Safety Instructions
Safety Instructions
Cautions for Use
A. Transportation and Installation
Be sure to carry VFD in a proper way suitable for its weight, or it may result in damage to the VFD.
Be sure to use heat-treated wooden crate when you adopt wooden packaging for the product.
Do not pile up VFD's above allowable limit.
Be sure to install the VFD as directed in this instruction manual.
Do not turn off the power supply to the damaged VFD.
Do not open the front cover while carrying the VFD.
Do not place the heavy material on the VFD.
The direction of installation should be observed properly as criterions specified in this manual show.
Make sure that you should not put screw, metal material, water, oil and the inflammable something else.
Keep in mind that the VFD is very vulnerable to drop from the mid air and strong shock.
Don't let the inverter exposed to rain, snow, fog, dust, etc.
Do not cover, nor block, the ventilating system having cooling fan. It may cause the VFD overheated.
Be sure to check the power is off when installing the VFD.
To prevent the risk of fire or electric shock, keep the connected wire in a sound condition.
Use the wire that meets the standard in a recommended length.
B. Wiring
A professional installer should have done the wiring and checking.
Do wiring after installing the VFD body.
Do not connect phase-leading capacitors, surge filter, radio noise filter to the output of the VFD.
Output terminals (terminals named U, V, W respectively) should be connected in a proper phase
sequence.
Make sure that there is not any short circuit terminal, wrong wiring. It may cause spurious operation
or failure.
Refrain from using a cable other than the cable shielded when you connect control circuit wiring.
Adopt the shielded wire only when wiring the control circuit. It may cause the failure of the VFD in its
operation.
Use the twisted pair shield wire for the ground terminal of the VFD
Installation Location Free of corrosive gas, inflammable gas, oil sludge and dust, etc
Temperature/Humidity -10 ~ 40℃/ Below 90% RH (Dewdrop should not be formed)
Storage Temperature -20~65℃
Elevation/Vibration Altitude 1,000m or lower / below 5.9m/sec²(=0.6g)
Ambient Atmospheric Pressure 70~106 kpa
Do not supply the excessive range of voltage displayed in the user manual to the each terminal.
It may cause damage to the inverter.
Current hunting can be occurred in the low speed territory during testing. It occurs where the capacity is
above 110kW with no-load and the axis is not connected.
The current hunting has a gap according to the motor characteristic. It will be disappeared when the load
is connected and it is not the indication of abnormal condition.
If the hunting is occurred seriously, please stop the testing and operates with the load.
Be sure to check relevant parameters for the application before starting trial operation.
C. Adjustment before starting trial operation
Safety Instructions
If the VFD is damaged and then gets into uncontrollable situation, the machine may lead to the dangerous
situation, therefore to avoid this situation, be sure to install the additional equipments such as brake.
E. Reaction on Failure and Malfunction
Do not perform the megger (insulation resistance check) test on the control board.
F. Maintenance, inspection and parts replacement
Be sure not to approach the machine when retry function is selected. The machine may start working
suddenly.
Stop key on the keypad should be set to be in use. For safety, additional emergency stop circuit should
be required.
Never modify the VFD for inappropriate use
When a magnetic contactor is installed on the power source, do not frequently start or stop using this
magnetic contactor. It may cause the failure of VFD.
Noise filter should be used for the minimization of troubles by electro-magnetic noise.
Electronic equipments close to the inverter should be protected against the damage caused by troubles.
Be sure to install the AC reactor at the input of inverter in case of input voltage unbalance.
Otherwise, generator or phase-leading capacitors may be destroyed by the harmonic current from inverter.
Be sure to set the parameters once more, in case of initialization of parameters, all values of parameters
is set to values of factory setting.
DC braking function cannot produce a zero-servo torque.
If required, additional equipment should be installed.
Do not change wiring, nor disconnect connector or option card during the operation of the VFD.
Do not disconnect the motor wiring while the voltage of inverter is output.
Mishandling may cause damage to the VFD.
D. How to Use
CONTENTS
Chapter 1. Basics
91.1 Confirmation of Specification on Nameplate
91.2 Type of product
101.3 Installation
101.4 Wiring
Chapter 4. Installation
174.1 Caution on Installation
184.2 Wiring Diagram of Terminals
204.3 Wiring of Main Power Supply Circuit
204.3.1 Description on Main Power Supply Terminals
204.3.2 Caution when wiring the Main Power Supply
214.3.3 Cautions on Ground Wiring
214.3.4 Caution on Ground Wiring
234.4 Control Circuit Wiring
234.4.1 Arrangement of Control Terminal Block
264.4.2 Functions of Control Terminal Block
274.4.3 Cautions on Control Circuit Wiring
274.4.4 Connection of Pressure Sensor and Low Water Level Sensor
Chapter 3. External Dimension
133.1 NSQ-0040S ~ NSQ-0150SE
14
3.2 NSQ-0150S ~ NSQ-0220SE
NSQ-0075T ~ NSQ-0400T
Chapter 2. Specification
112.1 Specification of Product (1 Phase)
122.2 Specification of Product (3 Phase)
284.4.5 Sink Mode and Source Mode
284.4.6 Communication Line Wiring
15
3.3 NSQ-0550T ~ NSQ-0750T
163.4 NSQ-1100T ~ NSQ-2200T
426.2 Pump Control Group
446.3 Drive Control Group
466.4 Description on Function of Parameter Settings
466.4.1 Pump Control Group
576.4.2 Drive Control Group
848.2 Accessories
848.2.1 EMC Filter
Chapter 5. Operation
295.1 FND
295.1.1 Appearance and Description of FND
305.1.2 Functional Description of each Part
315.1.3 How to change Parameter Settings
325.2 Function Setup
325.2.1 Basic Function Setup
345.2.2 Expansion Function Setup
CONTENTS
Chapter 6. Function Table & Description
416.1 Display of present status
365.3 Basic Operation
365.3.1 Constant Pressure Control Mode
CHAPTER 8 Appendix
788.1 RS-485
697.2 Measures to be taken in case of fault or alarm.
697.3 Cause of Fault and Reaction
Chapter 7. Cause of Fault and Reaction
687.1 Fault History Table
Chapter 1 Basics
1. What You Should Know before Use
1.1 Nameplate Information
Take the VFD out of the box, check the rating shown on a side of the product body and whether the
VFD type and rated output are exactly what you ordered. Check also whether the product has been
damaged during delivery.
Type of Drive
1.2 Type of Product
Nameplate of the Product
Input specification
Output specification
Product model name is indicated as above. Initial four digits indicate driving capacity of the drive in
00.00kW unit. Decimal point is not indicated.
'S' refers Single phase.
'T' refers Three phase.
Make sure you install the product correctly considering the place, direction or surroundings in order
to prevent decrease in the life and performance of the VFD.
Chapter 1 Basics
1.3 Installation
Connect the power supply, electric motor and operating signals (control signals) to the terminal block.
If you fail to connect them correctly, the VFD and peripheral devices might be damaged.
1.4 Wiring
This manual suits for next models
12
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