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Fuji Electric FA Components & Systems Co., Ltd.
I n s t r u c t i o n M a n u a l
DB Unit
Braking unit
200V class 11-22kW / BU22-2C
400V class 11-22kW / BU22-4C
CAUTION
■
Deliver this instruction manual without fail to
those who actually operate the equipment.
■
Read this operation manual and understand
the description before installing, connecting
(wiring),
operating
maintenance and inspection of the braking
unit.
■
Keep this instruction manual in a safe place
until the braking unit is discarded.
■
The product is subject to change without
prior notice.
INR-SI47-0845a-E
or
performing
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Related Manuals for Fuji Electric BU22-2C
Summary of Contents for Fuji Electric BU22-2C
- Page 1 ■ Keep this instruction manual in a safe place until the braking unit is discarded. ■ The product is subject to change without prior notice. Fuji Electric FA Components & Systems Co., Ltd. INR-SI47-0845a-E...
- Page 2 Introduction Thank you for purchasing our braking unit. This equipment discharges the braking force in braking operation of Fuji’s general purpose inverter to a resistor. For applicable inverter models, refer to Table A. Before starting operation, read through this operation manual to understand the handling method and operate correctly.
- Page 3 Installation WARNING ・ Install to nonflammable matter such as metals. Risk of fire ・ Do not place flammable matter nearby. Risk of fire ・ Contain the unit inside a distribution panel or the like so that it cannot be touched easily. Risk of electric shock or accident ・...
- Page 4 Operation WARNING ・ Be sure to install the surface cover before turning the power on (closing). Do not remove the cover while the power is turned on. Risk of electric shock ・ Do not touch the terminals of the braking unit while the power is supplied to the inverter or even if the unit is stopped.
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Page 5: Table Of Contents
Table of contents 1. Before Starting Operation 1-1 Shipment Inspection ··································· 1-1 1-2 Appearance of Product ······························· 1-1 1-3 Handling the Product ·································· 1-2 1-4 Transportation ············································· 1-2 1-5 Storage························································ 1-2 2. Installation and Connection ······································ 2-1 2-1 Operating Environment ······························· 2-1 2-2 Installation Method ······································... -
Page 6: Before Starting Operation
Before Starting Operation 1-1 Shipment Inspection Unpack and check the following items. If you have any question or trouble, contact the store of purchase or nearest Fuji’s sales office. Fig. 1-1-1. Rating Nameplate (1) Refer to the rating nameplate to check if the delivered product is the ordered one. -
Page 7: Handling The Product
1-3 Handling the Product (1) Removal of terminal cover Loosen the mounting screws of the terminal cover and, while holding the terminal cover, remove it as shown in Fig. 1-3-1 Fig. 1-3-1. Removal of Terminal Cover and Surface Cover 1-4 Transportation Be sure to hold the main body when transporting. -
Page 8: Installation And Connection
2 Installation and Connection 2-1 Operating Environment Install the unit in the environment shown in Table 2-1-1. Table 2-1-1. Operating Environment Item Specification Site Indoors Ambient –10 ~ +50℃ temperature Relative 5 ~ 95% (Without condensation) humidity Atmosphere Free from dust, direct sunshine, corrosive gases, oil mist, vapor or water drops. -
Page 9: Connection
2-3 Connection After the terminal cover is removed, each terminal block becomes visible (see Fig. 2-3-1). Take care of the following items and connect without mistakes. 2-3-1 Basic Connection (1) Connect the DC link connection terminals (P(+), N(-)) with the DC link circuit terminals (P(+), N(-)) of the inverter. - Page 10 ■ ■ ■ ■ Basic Connection Diagram Cable Cable length: 線長５ｍ以下 length: 5m or 線長５ｍ以下 Inverter Braking unit Braking 5m or less インバータ 制動ユニット 制動抵抗器 resistor P(+) P(+)R P(+) Ｍ (*3) (*2) N(-) N(-) (*3) ｵﾌﾟｼｮﾝ Optional fan*4 主回路 Main circuit ﾌｧﾝ*4 制御回路...
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Page 11: Connection Of Main Circuit And Grounding Terminal
2-3-2 Connection of Main Circuit and Grounding Terminal Table 2-3-1. Function of Main Circuit Terminals and Grounding Terminal Terminal Terminal name Description symbol The DC link circuit voltage of the inverter P(+), N(-) DC link connection terminal is connected. Terminals for connecting P(+)R, DB The braking resistor is connected. -
Page 12: Terminal Layout
Risk of electric shock • Noise is generated from the inverter, motor, cable and so on. Take care of CAUTION malfunction of surrounding sensors and devices. Risk of accident 2-3-4 Terminal Layout BU22-2C,4C Screw size M5 Screw size M3 １ P(+) ２... -
Page 13: Operation
3 Operation 3-1 Inspection and Preparation Before Operation Inspect the following items before starting Braking unit operation. (1) Check for correct connection. P(+) N(-) P(+)R DB Take care of the following points among all. a. Check if the DC link connection terminals P(+) N(-) braking... -
Page 14: Protective Action
4 Protective Action 4-1 Protective Action If a fault shown in Table 4-1 occurs, the braking unit stops the DB drive signal and issues a batch alarm signal at terminals 1 and 2 (the batch alarm signal does not have a means to discriminate the description of the alarm). -
Page 15: Maintenance And Inspection
5 Maintenance and Inspection Perform daily inspection and periodic inspection to avoid failure and maintain reliable operation over a long period. Take care of the following items when working. 5-1 Daily inspection Visually check for faults in operation state without removing cover or the like, while the power is turned on. -
Page 16: Insulation Test
(Cont’d) Check if screws and connectors are not loose. Control Check for malodor and discoloration. Retighten. printed Check for cracks, breakage, deformation and Smelling or visual inspection No fault board excessive rust. Visual inspection connectors Check the capacitors for liquid leakage and traces of deformation. -
Page 17: Replacement Parts
5-4 Replacement Parts The life of the part depends of the type of the part. The life of the part varies according to the surrounding environment and operating conditions. It is recommended to replace parts while referring to Table 5-4-1 as a measure. For the replacement method, contact the store of purchase or our nearest sales office. -
Page 18: Specifications
6 Specifications 6-1 Standard Specifications 6-1-1 Braking Unit Class 200V 400V Type BU22-2C BU22-4C Minimum connecting resistance (Ω) Maximum braking power (kW) Generating loss (10%ED)(W) Rated input current (Arms) Mass (kg) Braking torque 150% (Instantaneous maximum torque) Operation ratio 10%ED (30%ED with optional fan) -
Page 19: Braking Resistor
6-1-2 Braking Resistor 1) Item supporting 10%ED 200V class Type DB11-2C DB15-2C DB22-2C Standard applied motor (kW) Resistance (Ω) Max. capacity (kW) Power-on current (A) Mass (kg) 400V class Type DB11-4C DB15-4C DB22-4C Standard applied motor (kW) 34.4 Resistance (Ω) Max. -
Page 20: External Dimensions
6-2 External Dimensions... -
Page 21: Optional Fan
7 Optional Fan This braking unit can increase the braking time and operation ratio by using the optional fan. Standard specification With optional fan Braking time 10 sec. 30 sec. Operation ratio 10%ED 30%ED (Refer to *1 and *2 in Chapter 6 “Standard Braking Unit Specifications.”) 7-1 Specifications of Optional Fan Type... -
Page 22: External Dimensions
7-3 External Dimensions [Fan unit] BU-F1S，BU-F2S [DB Unit with Fan Unit] BU22-2C/4C, BU-F1S/F2S 7 7 7 7 - - - - 2 2 2 2... - Page 23 2008-03...
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