USER’S MANUAL

Overview 1. Nomenclature Cooling

fan

LG Dynamic Braking Units SV 150 DBU - 4U

SV-DBU-U series is designed to use with LG inverter SV-iS5 and SV-iH series.
DB Unit or DB Unit or
DB Resistor DB Resistor
DB Unit or DB Unit or
This manual describes the safety instructions that must be followed when installing,
DB Resistor DB Resistor
SV-DBU-U Series operating, and servicing. Read this manual completely before installing. The unit
LG
Symbol
Drive
Capacity Symbol Type Symbol
Drive Input
Voltage
Drives
contains high voltage that can cause electric shock resulting in personal injury or loss of
150 11~15[kW] Dynamic 2U 200V Class
life. DBU Braking Air flow
220 18.5~22[kW] Unit 4U 400V Class
GOOD BAD
Important User Information 370 30~37[kW]
<<Fan location in a panel>>
550 45~55[kW]

Indicates that incorrect handling may cause 750 75[kW]

„ Mounting
! WARNING hazardous conditions, resulting in personal injury or
The units must be mounted vertically with sufficient room (horizontally and
loss of life.
vertically) from adjacent equipment.
2. Specifications
Indicates that incorrect handling may cause
! CAUTION physical damages. 2.1 200V Class over 100mm
Type SV150DBU SV220DBU SV370DBU SV550DBU
Spec. -2U -2U -2U -2U
"CAUTION" level instructions may lead to a serious result according to conditions. SV-DBU
Max. DC Input Voltage DC 400V
Please follow the instructions of caution level for safety. over 50mm over 50mm
Applicable Drive
11 15 18.5 22 30 37 45 55
Capacity [kW]
„ Safety Instructions Braking Wattage 3.2 [KW] 4.8 [KW] 6.4 [KW] 9.6 [KW] over100mm
Resistor
Minimum
8.5 [Ω] 5.7 [Ω] 4.2 [Ω] 2.8 [Ω]
1. Electric Shock Resistance

2.2 400V Class 4. Terminal Configuration

Type SV150DBU SV220DBU SV370DBU SV550DBU SV750DBU
! WARNING Spec. -4U -4U -4U -4U -4U 1) Power Terminals
„ Do not open the front cover when the input power is introduced. Max. DC Input Voltage DC 800V
„ Be sure to remove all input power from the braking unit including drive Applicable Drive
11 15 18.5 22 30 37 45 55 75
before servicing. Capacity
Braking Wattage 3.2 [KW] 4.8 [KW] 6.4 [KW] 9.6 [KW] 12.8 [kW]
LG Industrial Systems „ Wait at least 10 minutes before servicing and check the residual voltage.
Resistor
Minimum
P N G B1 B2

„ Service only qualified personnel. 8.5 [Ω] 5.7 [Ω] 4.2 [Ω] 2.8 [Ω] 8.4 [Ω]
Resistance

2.3 General Specifications

Terminal Description
2. Fire Average Braking Torque 100%
P DC (+) input. Connect to “P2” or “P” terminal of drive
Enable Duty 10% (without cooling fan on heat sink)
N DC (-) input. Connect to “N” terminal of drive
Parallel Connection Connectable up to 3 units in parallel
! CAUTION Maximum Turn On Time 6 seconds
G Ground Terminal

„ Mount the braking unit and resistor on a non-flammable material. Output Signal Heat Sink Overheat, Fuse Open, OC Trip B1 Connect to braking resistor

Installing them on a flammable material may cause a fire. Protection Heat Sink Overheat Protection, Over-Current B2 Connect to braking resistor
„ Do not connect the braking resistor directly to the DC terminal (P2, N) of Protection, Output Short Circuit Protection
Operating
the drive. This can cause a fire. -10℃ ~ 40℃ 2) Control Terminals
Temperature
Humidity Less Than 90 % RH Max. (Non-Condensing)
3. Injury
Environmental Altitude 1,000m above sea level
Conditions
Cooling
Natural Convection IN+ IN- OUT+ OUT- 30B 30C 30A
! CAUTION Method
Application No Corrosive Gas, Combustible Gas, Oil Mist, or
„ Do not apply voltage to the terminals higher than the voltage specified in Site Dust Terminal Function

the manual. This can cause damage and burst of the unit. IN+ Slave turn on signal input (when “Slave Mode” selected)

„ Be sure to connect wires to the correct terminal. Especially, ensure the IN- Slave turn on signal input (when “Slave Mode” selected)
3. Installation
polarity of DC power terminal. Otherwise, damage and burst of the unit OUT+ Slave turn on signal output (when “Master Mode” selected)
„ Environmental Conditions
may occur.
1) Do not mount the unit in direct sunlight. Isolate the unit from excessive vibration. OUT- Slave turn on signal output (when “Master Mode” selected)
„ Do not touch the resistor right after the power is turned off. The resistor is still
2) Protect the unit from moisture, dust, metallic particles, corrosive gases and 30A Fault signal output
hot.
liquids. Install the units on a non-flammable material and as smooth as possible. 30A : Normal open contact
30B
3) In case of installing many units in a panel, consider the air flows for power 30B : Normal close contact
4. Other Instructions
30C 30C : Common terminal
dissipation. (see below figures for proper installation)
(Refer to sec. 7 for details of Master/Slave Operation)
! CAUTION
„ Do not operate the unit if enclosure damaged.
DB Unit or
„ Prevent any wire fragments, metallic particles from dropping during DB Resistor 5. Terminal Wiring
installation.
DB Unit or
DB Resistor „ The SV-iH series has two kinds of power terminal configurations. Make sure the
DB Unit or
DB Resistor wiring according to drive capacity.
„ SV030iH-4, SV037iH-4, SV045iH-4, SV055iH-4 units do not provide terminals for DC
LGIS constantly endeavors to improve its products so that information in this manual reactor connection.
is subject to change without notice.
GOOD BAD
Ver. 1.0 2001. 9
<<Installing units in a panel>>
 1) Wiring Drive, DB unit and DB resistor 3) How to set to Slave (on PCB) „ 400V Class ▶ Drive Capacity: 220[kW]
„ Set the “Select Switch JP1” as below figure.
DB Unit Applicable
11 15 18.5 22 30 37 Drive
SLAVE MASTER Drive [KW]
Braking Unit SV150DBU-4U SV220DBU-4U SV370DBU-4U
P N G B1 B2 Braking
3.2KW 33.9Ω 4.8KW 22.8Ω 6.4KW 16.9Ω
Resistor
Common bus bar DB Unit SV075DBU-4U DB Unit SV075DBU-4U DB Unit SV075DBU-4U
4) Connection between Master and Slave Applicable
11 15 18.5 22 30 37
Drive „ Set one DB unit to “Master” and the other to “Slave”. Motor [KW]

„ Connect “OUT+” terminal of Master to “IN+” terminal of Slave and “OUT-”

Applicable
terminal of Master to “IN-” terminal of Slave. 45 55 75 90 ~ 160 220
P1 Drive [KW]
B1 B2 DB DB DB DB DB DB
P2 SV750DBU-4U SV750DBU-4U
Braking Unit SV550DBU-4U SV750DBU-4U Resistor Resistor Resistor Resistor Resistor Resistor
2m max. * 2 EA * 3 EA
N
OUT- OUT-
DB Resistor Braking 12.8KW 8.4Ω 12.8KW 8.4Ω 16.9Ω , 16.9Ω , 16.9Ω , 16.9Ω , 16.9Ω , 16.9Ω ,
OUT+ OUT+ 9.6KW 11.4Ω 12.8KW 8.4Ω
MASTER PCB SLAVE PCB Resistor * 2 EA * 3 EA 6.4kW 6.4kW 6.4kW 6.4kW 6.4kW 6.4kW
IN- IN- Applicable
2) Wiring Drive, DB unit, DB resistor and DC reactor J13 J13 45 55 75 90 ~ 160 220
IN+ IN+ Motor [KW]
DB Unit z See below for the combination of DB Units and DB resistors. 9. Display LED and Fault Reset

5) Connecting 3 DB Units 2) Combination of 200V Class Units The DB Unit have four LEDs on the frontcover. The green LEDs display main power input
P N G B1 B2 ▶ Drive Capacity: 30[kW] ~ 37[kW] ▶ Drive Capacity: 45[kW] ~ 55[kW]
„ Set one DB unit to “Master” and others to “Slave”. and braking operation. The red LEDs display fault status of the unit.
„ Connect “OUT+” terminal of Master to “IN+” terminal of Slave and “OUT-”
Drive DC Reactor terminal of Master to “IN-” terminal of Slave, respectively. Drive Drive Display Function

POWER This LED is turned on when the input power of the unit is
P1 1m max. (RED) introduced.
B1 B2
P2 OUT- OUT- RUN
SV037DBU-2U DB Unit SV037DBU-2U DB Unit DB Unit SV037DBU-2U
This LED is turned on when the unit is in the braking operation.
N OUT+ OUT+
MASTER PCB SLAVE PCB1 (GREEN)
DB Resistor IN- IN-
J13 J13 OHT This LED is turned on and cut off (trip) the output when the heat
IN+ IN+
(RED) sink of the unit is over heated.

6. Basic Wiring OCT This LED is turned on when an excessive current flows through
DB DB DB
4.2Ω , 6.4kW 4.2Ω , 6.4kW 4.2Ω , 6.4kW
1) Single Operation Resistor Resistor Resistor (RED) the IGBT and the unit cut off the output to protect the unit.
1m max.
OUT- FOT
MCCB Drive This LED is turned on when the internal protective fuse is opened.
OUT+ SLAVE PCB2 (RED)
R U Twist pair IN-
IM Motor J13 3) Combination of 400V Class Units
전원 S V IN+
▶ Drive Capacity: 30[kW] ~ 37[kW] ▶ Drive Capacity: 45[kW] ~ 75[kW]
T W
Twist pair 10. Dimensions
P1 5M max.
B1 B2 B2 B1 6) Master/Slave Operation
P2 P Drive Drive Units: [mm]
30A TH1
N N MCCB Drive
30B
5M max. TH2
G G 30C R U
Input S V IM Motor Dynamic Braking Unit
DB Unit DB Resistor
Power SV037DBU-4U DB Unit DB Unit SV075DBU-4U
T W

* ) The SV030/037/045/055DBH-4 units provide only terminal “P” instead of terminal P1 5M max.
B1 B2 B2 B1
“P1” and “P2”. Please refer to “2) Wiring Drive, DB unit and DB resistor for POWER
P2 P RUN

SV030/037/045/055iH-4” for correct wiring. OUT+ TH1 OHT

N N 16.9Ω , DB 16.9Ω , DB DB 16.9Ω , OCT

„ Use twist wire shorter than 10m between drive, DB unit and DB resistor. OUT- TH2 Resistor Resistor Resistor FOT

G G 6.4kW 6.4kW 6.4kW

„ In case of master/slave operation, the control wire should be shorter than 2m with WIRING
R U B2

twist wire. MASTER DB Unit EB Resistor S

T (P2)
P N
V
W
IM B1

2M max. B2
B1

„ Be sure to earth terminal “G” of drive and DB unit.

G
N
P

5M max. ▶ Drive Capacity: 90[kW] ~ 160[kW]

„ Wire Size:
DB Unit Wire size
SV150DBU-2U 5.5 ㎟ B1 B2 B2 B1
SV220DBU-2U 8.0 ㎟ P
200V IN+ Drive
TH1
SV370DBU-2U 14.0 ㎟ N IN-
SV550DBU-2U 14.0 ㎟ TH2
SV150DBU-4U 5.5 ㎟ G
SV220DBU-4U 5.5 ㎟
SLAVE DB Unit DB Resistor DB Unit SV075DBU-4U DB Unit
400V SV370DBU-4U 5.5 ㎟ SV075DBU-4U
SV550DBU-4U 8.0 ㎟
SV750DBU-4U 14.0 ㎟
8. Combination of DB Units according to Drive Capacity
7. 7. Master / Slave Operation
1) Combination of Braking Units DB DB DB DB
1) In case of parallel operation of two braking units, the one must be set at “Master”
Resistor Resistor Resistor Resistor
and the other at “Slave”. (When one braking unit is operated it must be set at
„ 200V Class
“Master” : Factory default – “Master”)
Applicable 16.9Ω , 16.9Ω , 16.9Ω , 16.9Ω ,
2) How to set to Master (on PCB) 11 15 18.5 22 30 37 45 55
Drive [KW] 6.4kW 6.4kW 6.4kW 6.4kW
„ Set the “Select Switch JP1” as below figure. Braking Unit SV150DBU-2U SV220DBU-2U SV370DBU-2U SV550DBU-2U
SLAVE MASTER Braking
3.2KW 8.5Ω 4.8KW 5.7Ω 6.4KW 4.2Ω 9.6KW 2.8Ω
Resistor
Applicable
11 15 18.5 22 30 37 45 55
Motor [KW]