User manual HITACHI HBU-4220

[. . . ] Then, check the contents for any sign of defect or damage during transport. If there is any problem, please contact your Hitachi distributor immediately. B. Braking Unit model numbering convention HBU- Braking Unit (@ 10% ED) Code Inverter Input Voltage 200 VAC 400 VAC 015 030 045 220 Inverter Power 15 kW 30 kW 45 kW 220 kW Code 2 4 3 Hitachi America, Ltd. Tarrytown, NY C. HBU Series Technical Specifications 200 V SERIES Model Peak current (A) * Continuous current (A) Braking Activation Voltage Maximum hysteresis Multiple units DC Bus Voltage Range Power ON Braking ON Ambient temperature Ambient humidity Physical data Vibration Protection Weight HBU-2015 HBU-2030 50 90 15 30 380 ±10 VDC (not selectable) ~10 VDC Maximum: 10 HBUs parallel connected 230-380V The red "power" LED will be on whenever the inverter DC Bus voltage is above ~35VDC The green "braking" LED will be on during braking unit conduction Minus 10°C to 40°C (no frost) 90% RH (no dew) 10-20hz: 1g, 20-50hz: 0. 2g IP20 2. 3 kg/5. 1 lbs Input and output specifications Power supply Indication functions 400 V SERIES Model Peak current (A) * Continuous current (A) Input and output Braking Activation Voltage specifications Maximum hysteresis Multiple units Power supply Indication functions DC Bus Voltage Range Power ON Braking ON Ambient temperature Ambient humidity Physical data Vibration Protection Weight HBU-4015 25 8 HBU-4030 50 15 About 16V Maximum: 10 HBUs parallel connected 460-800V The red "power" LED will be on whenever the inverter DC Bus voltage is above ~35VDC The green "braking" LED will be on during braking unit conduction Minus 10°C to 40°C (no frost) 90% RH (no dew) 10-20hz: 1g, 20-50hz: 0. 2g IP20 2. 3 kg/5. 1 lbs 11. 6 kg/ 25. 5 lbs HBU-4045 75 25 HBU-4220 250 80 630/660/690/730/760V+-16V (jumper selectable) * Peak current is defined as capacity for 10 seconds maximum, and 10% ED 4 Hitachi America, Ltd. Tarrytown, NY D. [. . . ] Ambient temperature: In order to improve the life and reliability of the braking unit, please install it in a well-ventilated area. If you install braking units in an enclosure, be sure to size the panel properly and provide adequate cooling/ventilation as necessary to ensure the internal temperature remains lower than +40°C. Other precautions for installation: Before installation, cover the ventilation grills on the braking unit with tape to keep out dust and metal fragments. After installation is completed, be sure to remove any tape or other coverings from the ventilation grills. Mounting clearance: Provide adequate top, bottom and side clearance around the HBU according to the following diagram: >10 cm >5 cm HBU >5 cm Figure 3 >10 cm 13 Hitachi America, Ltd. Tarrytown, NY III. Installation and Operation WARNING! 1. The inverter DC Bus can hold a dangerous electrical charge for some time after AC power had been removed. Make sure that the inverter input power has been turned off for at least 10 minutes before you attempt to make any wiring connections to the HBU. . Wiring should be done by a licensed electrician following applicable codes and generally accepted wiring practices. Do not touch the terminals or internal components of the braking unit while the DC bus is charged. Make sure that no wire strands contact the metal case of the HBU, or cause a short circuit between the terminals. CAUTION! 1. Be sure to connect the braking resistors, braking unit and inverter according to the connection diagram. Tighten the terminal screws according the specified torque. A. Use wire gauge > 4 mm2 on power supply connection and resistor connection. Check that the connections are correct before you connect to the power supply. Refer to the wiring diagram in Figure 4 for the necessary connections for P and N, and recommended use of fault alarm functions. The terminal arrangement is shown in Figure 7. The HBU-4220 also includes terminals marked R and S, which must be connected to the corresponding terminals on the AC input side of the inverter, as shown below. HBU-4220 Only R S Fault relay energizes when HBU internal temperature is too high REQUIRED FOR SAFETY Figure 4 Typical Alarm and Safety Circuit WARNING!Be sure to utilize a power disconnection method as shown in Figure 4 above, which removes power from the inverter should the braking resistor overheat. Failure to do so may result in risk of fire, injury or death. 15 Hitachi America, Ltd. Tarrytown, NY Jumper block Factory Default Position for Normally Open (N. O. ) Operation (recommended) Position for Normally Closed (N. C. ) Operation (not recommended) Jumper J8 Setting Figure 5 16 Hitachi America, Ltd. Tarrytown, NY B. Connecting Multiple HBU Units Connection Diagram for HBU-2015/2030/4015/4030/4045 Resistor N P MASTER MASTER MASTER INVERTER SLAVE SLAVE SLAVE Figure 6 17 Hitachi America, Ltd. Tarrytown, NY Ta Tc Tb IN+ IN- OUT+ OUT-Ta Tb Tc IN+ IN- OUT+ OUT- Tb Tc N R S N P P1 PB P P1 PB HBU-4220 4220 HBU-2015/2030/4015/4030/4045 2015/2030/4030/4045 Figure 7 C. Simplified circuit diagram of the braking unit D. [. . . ] Should this occur, it would likely result in an over voltage trip on the inverter. In case of difficulty, use the table below to try to find possible solutions. Should this not resolve the problem, please contact your Hitachi distributor for further assistance. Item 1 Symptom The "POWER" light of the braking unit is not illuminated when the inverter is energized Possible Cause Wiring error HBU set for "SLAVE" Short circuit on Braking unit IGBT Solution Check the wiring Confirm that the jumper is set for "MASTER" Change the braking unit Examine the braking resistance and its connection. Check that AC supply is within spec Recheck connections Examine the design and recalculate it. [. . . ]