After removing the cover of input/output terminals and control terminals, check if terminals are clear.
Be sure to observe the following precautions when wiring.
CAUTION!
1. Make sure that power is only applied to the R/L1, S/L2, T/L3 terminals. Failure to comply
may result in damage to the equipment. The voltage and current should lie within the
range as indicated on the nameplate.
2. All the units must be grounded directly to a common ground terminal to prevent lightning
strike or electric shock and also for decreasing the noise interference.
3. Please make sure to fasten the screw of the main circuit terminals to prevent sparks
which is made by the loose screws due to vibration.
DANGER!
1. A charge may still remain in the DC bus capacitors with hazardous voltages even if the power
has been turned off. To prevent personal injury, please ensure that the power is turned off and
wait ten minutes for the capacitors to discharge to safe voltage levels before opening the
brushless DC motor drive.
2. Only qualified personnel familiar with brushless DC motor drives is allowed to perform
installation, wiring and commissioning.
3. Make sure that the power is off before doing any wiring to prevent electric shock.
CAUTION!
1. Use wire gauges that comply with the local regulations during wiring.
2. Check following items after finishing the wiring:
A. Are all connections correct?
B. No loose wires?
C. No short-circuits between terminals or to ground?
Revision May 2009, 00DE, V0.502-1
Chapter 2 Installation and Wiring| BLD-E1 Series
2.1 Wiring
There are main circuit and control circuit for the wiring of the brushless DC motor. Users must
connect wires according to the circuit diagrams on the following pages.
Figure 1 for models of BLD-E1 Series
BLD002E111A/121A, BLD004E111A/121A, BLD007E111A/121A, BLD015E121A, BLD022E121A
2-2 Revision May 2009, 00DE, V0.50
Chapter 2 Installation and Wiring| BLD-E1 Series
Figure 2 for models of BLD-E1 Series
BLD002E123A, BLD004E123A/143A, BLD007E123A/143A, BLD015E123A/143A,
BLD022E123A/143A, BLD037E123A/143A
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Chapter 2 Installation and Wiring| BLD-E1 Series
Figure 3 Wiring for NPN mode and PNP mode
NPN M o d e
Applicable Output Signal
Factory setting is NPN
NPN
PNP
Factory
setting
NOTE
Don't ap ply mains voltage into ab ove terminals.
PNP Mod e
Factory setting is PNP
NPN
PNP
Multi-function
input terminals
Open collector output
VCC
O/P
0V
NOTE
It needs to connect O/P to multi-function
input termi nals for norma l operation.
Applicable Output Signal
Complementary outp ut
VCC
Factory
setting
NOTE
Don't ap ply mains voltage into ab ove terminals.
Multi-function
input terminals
NOTE
It needs to connect O/P to multi-function
input termi nals for norma l operation.
O/P
0V
CAUTION!
1. The wiring of main circuit and control circuit should be separated to prevent erroneous actions.
2. Please use shield wire for the control wiring and not to expose the peeled-off net in front of the
terminal.
3. Please use the shield wire or tube for the power wiring and ground the two ends of the shield
wire or tube.
4. Damaged insulation of wiring may cause personal injury or damage to circuits/equipment if it
comes in contact with high voltage.
5. The brushless DC motor drive, motor and wiring may cause interference. To prevent the
equipment damage, please take care of the erroneous actions of the surrounding sensors and
the equipment.
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Chapter 2 Installation and Wiring| BLD-E1 Series
6. With long motor cables between the brushless DC motor drive and motor, high capacitive
switching current peaks can cause over-current, high leakage current or lower current readout
accuracy. To prevent this, the motor cable should be less than 20m for 3.7kW models and
below. And the cable should be less than 50m for 5.5kW models and above. For longer motor
cables use an AC output reactor.
7. The brushless DC motor drive, electric welding machine and the greater horsepower motor
should be grounded separately.
8. Use ground leads that comply with local regulations.
9. No brake resistor is built in the BLD-E1 series, it can install brake resistor for those occasions
that use higher load inertia or frequent start/stop. Refer to Appendix B for details.
10. To prevent the lightening strike and electric shock, the metal grounding wire of electric
equipment should be thick, short and connect to the specific ground terminal of the variable
frequency system.
11. Multiple BLD-E1 units can be installed in one location. All the units should be grounded directly
to a common ground terminal, as shown in the figure below. Ensure there are no ground loops.
Excellent
Good
Not allowed
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Chapter 2 Installation and Wiring| BLD-E1 Series
2.2 External Wiring
Items Explanations
Power
supply
Fuse/NFB
(Optional)
Magnetic
contactor
(Optional)
Input AC
Line
Reactor
(Optional)
Zero-phase
Reactor
(Ferrite
Core
Common
Choke)
(Optional)
EMI filter
Driver
Brake
resistor
and Brake
unit
Output AC
Line
Reactor
Grounding
Please follow the specific power supply
requirements shown in Appendix A.
There may be an inrush current during
power up. Please check the chart of
Appendix B and select the correct fuse with
rated current. Use of an NFB is optional.
Do NOT run/stop brushless DC motor drives
by turning the magnetic contactor ON/OFF,
as it will reduce the usage life of drive. If you
still need to run/stop drives by turning the
magnetic contactor ON/OFF, it is
recommended to do so only ONCE per hour.
Used to improve the input power factor, to
reduce harmonics and provide protection
from AC line disturbances.
switching spikes and short interruptions). AC
line reactor should be installed when the
power supply capacity is 500kVA or more or
advanced capacity is activated .The wiring
distance should be
appendix B for details.
Zero phase reactors are used to reduce
radio noise especially when audio equipment
is installed near the brushless DC motor
drive. Effective for noise reduction on both
the input and output sides. Attenuation
quality is good for a wide range from AM
band to 10MHz. Appendix B specifies the
zero phase reactor. (RF220X00A)
To reduce electromagnetic interference. It is
built in 230V 1-phase and 460V models.
The surrounding temperature should be
within the specification (refer to chapter 1) to
prevent from reducing the drive’s usage life.
Please wire according to chapter 2 wiring,
wrong wire may cause damage.
Used to reduce the deceleration time of the
motor. Please refer to the chart in Appendix
B for specific Brake resistors.
Motor surge voltage amplitude depends on
motor cable length. For applications with
long motor cable (>20m), it is necessary to
install a reactor at the drive output side.
Please refer to the chart in appendix B.
To prevent electric shock due to leakage
current of the drive, the drive and motor
should be grounded. Please refer to
specification of main circuit terminal.
≤
(surges,
10m. Refer to
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Chapter 2 Installation and Wiring| BLD-E1 Series
2.3 Main Circuit
2.3.1 Main Circuit Connection
Terminal Symbol Explanat ion of Terminal Function
R/L1, S/L2, T/L3
U/T1, V/T2, W/T3
+, -
E
Input terminals of commercial power (1-phase/3-phase)
Output terminals of brushless DC motor drive for connecting
brushless DC motor. Wire: U/T1 (Red); V/T2 (White); W/T3 (Black)
Connections for External Brake unit (BUE series)
Earth connection, please comply with local regulations.
CAUTION!
Mains power terminals (R/L1, S/L2, T/L3)
DO NOT apply 1-phase power to 3-phase models. It is unnecessary to consider phase-
sequence of these mains power terminals (R/L1, S/L2, T/L3).
To connect a no fuse switch between 3-phase AC input power and main circuit terminals
(R/L1, S/L2, T/L3) is necessary. It is recommended to add a magnetic contactor (MC) in the
power input wiring to cut off power quickly and reduce malfunction when activating the
protection function of brushless DC motor drives. Both ends of the MC should have an R-C
surge absorber.
Please make sure to fasten the screw of the main circuit terminals to prevent sparks which is
made by the loose screws due to vibration.
Please use voltage and current within the regulation shown in Appendix A.
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Chapter 2 Installation and Wiring| BLD-E1 Series
When using a general GFCI (Ground Fault Circuit Interrupter), select a current sensor
with sensitivity of 200mA or above, and not less than 0.1-second operation time to avoid
nuisance tripping. For the specific GFCI of the brushless DC motor drive, please select a
current sensor with sensitivity of 30mA or above.
Output terminals for main circuit (U, V, W)
The factory setting of the operation direction is forward running.
When it needs to install the filter at the output side of terminals U/T1, V/T2, W/T3 on the
brushless DC motor drive. Please use inductance filter. Do not use advanced capacitors
or L-C (Inductance-Capacitance) or R-C (Resistance-Capacitance), unless approved by
Delta.
DO NOT connect advanced capacitors or surge absorbers at the output terminals of
brushless DC motor drives.
Use well-insulated motor, suitable for drive operation.
When using a general GFCI (Ground Fault Circuit Interrupter), select a current sensor
with sensitivity of 200mA or above, and not less than 0.1-second operation time to avoid
nuisance tripping. For the specific GFCI of the brushless DC motor drive, please select a
current sensor with sensitivity of 30mA or above.
Terminals [+, -] for connecting brake resistor
Connect a brake resistor or brake unit in applications with frequent decelerations, short
deceleration time, insufficient brake torque or requiring increased brake torque.
When using external brake unit, please connect it to the terminals [+, -]. Please do NOT
connect brake resistors to terminals [+, -] directly, as it may cause damage.
All BLD-E1 series don’t have a built-in brake chopper. Please connect an external
optional brake unit (BUE-series) and brake resistor.
When not used, please leave the terminals [+, -] open.