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Hitachi RCU Series User manual

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1
RCU Series
Regenerative Converter Unit
Instruction Manual
NOTE: REFER ALSO TO APPLICABLE
INVERTER INSTRUCTION MANUAL
Hitachi America, Ltd.
Manual Number: HAL1057C
May 2012
After reading this manual,
keep it handy for future
reference.
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[email protected]
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hitachiacdrive.com
[email protected]
Hitachi America Ltd. RCU SERIES
2
Revision History
Rev A, May 2010 –Miscellaneous corrections throughout. Added cooling clearance drawing.
Rev B, June 2010 –Significant updated information.
Rev C May 2012–Redesigned manual format
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Hitachi America, Ltd. RCU SERIES
`
3
1. SAFETY
ONLY A COMPETENT ELECTRICIAN SHOULD CARRY OUT THE
ELECTRICAL INSTALLATION.
1.1 WARNINGS
1
Internal Components and circuit boards (excepting the isolated I/O
terminals) apply an electric current when the RCU is connected to the
main voltage. This voltage is extremely dangerous and may cause
death or severe injury if you come in contact with it.
2
When the RCU is connected to the main power, current is flowing in
the DC-Link (P, N) and output terminals (R, S, T) even if the RCU is
not operating.
3
RCU has a large capacitive leakage current.
4
The control I/O terminals are isolated from the I/O voltage but the
relay outputs and other I/Os may have dangerous voltage even if the
power is disconnected from the RCU
5
User should install Fuse which can be blown fast between output
terminals (R, S, T) and main power source of the RCU
6
Spare parts can be delivered only by Hitachi America, Ltd.
1.2 SAFETY INSTRUCTIONS
!
1
Do NOT make any connections when the RCU is connected to main
voltage.
2
Do NOT make any measurements when the RCU is connected to
main voltage.
3
After disconnecting main power, wait until the cooling fan stops and
the indicator on display goes out. Wait a further 5 minutes before
doing any work on the RCU connections. Do NOT open even the
cover within this time.
4
Do NOT make any voltage withstand tests on any parts of the RCU.
5
Make sure that the cover of the RCU is closed before connecting
main voltage.
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Hitachi America Ltd. RCU SERIES
4
Ground Warning Symbols
The ground terminal of the RCU
has to be connected to ground wire .
Grounding of the RCU prevents high
voltage accidents that are caused by
switching.
Please be more cautious for the following
warning symbols for user’s safety
= Dangerous Voltage
!
= General Warning
1.3 Wiring
1
Do not supply overvoltage which over permissible voltage level for
the RCU output side terminals (R, S, T)
2
Link the RCU output-side terminals (R, S, T) to the exact order
3
Link the RCU output-side terminals (R, S, T) between main input
power and input AC reactor of inverter
4
Only a competent electrician should perform wiring and inspection
This manual explains specifications, installation, operation, features and maintenance of
RCU. This is a manual for users who have prior experience with RCU.
Please read this manual carefully before operating the RCU. Retain it for future reference.
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Hitachi America, Ltd. RCU SERIES
`
5
2. Upon Receipt of Products
2.1 Initial Inspection
Each RCU has been subjected to demanding factory tests before release. After unpacking,
check that the unit does not show any signs of damage or missing parts. (Refer to the RCU
Label in Figure 2.1 and RCU Type in Figure 2.2).
In the event of damage, or if the product does not correspond with your order, please contact
your supplier immediately.
TYPE
RCU4022
RCU Model
Serial No.
0901001P
Serial Number
Power Rating
22[kW], 25[%ED]
RCU Nominal Power(Motor Capacity)
INPUT
DC513~650V, DC43A (AVG)
RCU Rated Input
OUTPUT
3Φ, AC 380~460V rms,
50/60Hz, AC 40A rms 100s
RCU Rated Output
Hitachi America, Ltd.
Figure 2.1 RCU Label (This is attached to the side of the RCU)
2.2 RCU Type
RCU
4
0
2
2
REGENERATIVE Converter UNIT
2=200Vac~230Vac
4=380Vac~460Vac
Motor Capacity [kW]
Figure 2.2 RCU Type
2.3 Storage and Warranty
Check the ambient conditions in the storage room before making the first trial run
(temperature: -25ºC~+60ºC, relative humidity: 5~95%, condensation is not allowed).
Hitachi America, Ltd. will not be responsible for the damage caused by ambient conditions.
The period of the product warranty under normal installation and handling conditions
is 12 months from the date of installation or 18 months from date of shipment,
whichever occurs first. Warranty remedy is limited to either repair at Hitachi’s
designated service center, or replacement, of the only the RCU in question, at Hitachi
America’s sole discretion. The warranty does not cover damage to associated
equipment, or damage caused by improper installation, unauthorized modification, fire,
flood, etc.
Contact Hitachi America for a copy of the complete warranty terms and conditions which
govern this sale. If any questions concerning warranty arise, please contact your distributor.
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Hitachi America Ltd. RCU SERIES
6
2.4 Power rating
2.4.1 200V RCU output rating
Id= rated DC input current, In = rated AC output current (100sec per 400sec, or 25%ED)
Ic = continuous AC output current, * = ask factory for detail
Main Voltage 200V - 230V, 50/60Hz RCU Series
RCU Model
Rated power and Rated current
Size
Dimension
W×H×D
(mm)
Weight
(kg)
P [kW]
Id [Aavg]
In [Arms]
Ic [Arms]
RCU2011
RCU2015
RCU2022
11
15
22
36
48
72
30
40
60
15
20
30
KE3
195×425×210
12
Table 2.4-1 200V series RCU Power ratings and dimensions
2.4.2 400V RCU output rating
Id= rated DC input current, In = rated AC output current (100sec per 400sec, )
Ic = continuous AC output current , *=ask factory for detail
Main Voltage 380V - 460V, 50/60Hz RCU Series
RCU Model
Rated power and Rated current
Size
Dimension
W×H×D
(mm)
Weight
(kg)
P [kW]
Id [Aavg]
In [Arms]
Ic [Arms]
RCU4011
RCU4015
11
15
22
29
20
27
16
21.6
KE2
195×425×195
12
RCU4022
22
43
40
32
KE3
195×425×210
RCU4030
30
58
54
43.2
KE4
195×455×210
13.5
Table 2.4-2 400V series RCU Power ratings and dimensions
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Hitachi America, Ltd. RCU SERIES
`
7
2.5 Mounting
The RCU should be mounted in a vertical position on the wall or on the back plane of a
cubicle. Follow the requirement for cooling. See chapter 3.2 for dimensions.
In order to ensure a safe installation, make sure that the mounting surface is relatively flat.
Fixing is done with four or more screws or bolts depending on the size of the unit. See Figure
2.5-1 ~ 2.5-3.
2.5.1 KE2
class
Model
400V
RCU4011
RCU4015
Figure 2.5-1 KE2 Mounting dimension
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Hitachi America Ltd. RCU SERIES
8
2.5.2 KE3
Class
Model
Class
Model
400V
RCU4022
200V
RCU2011
200V
RCU2015
200V
RCU2022
Figure 2.5-2 KE3 Mounting dimension.
2.5.3 KE4
Class
Model
400V
RCU4030
Figure 2.5-3 KE4 Mounting dimension.
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Hitachi America, Ltd. RCU SERIES
`
9
2.6 Specification
Main
Connection
Output (AC Source)
( R, S, T ) 3-phase 200Vac∼230Vac, 380Vac∼460Vac/
45~65Hz
allowable voltage fluctuation ±10%
allowable imbalance rate between phase ≤2%
Input (DC Source)
AC line voltage X 1.414
Rated
Output
Regenerative Torque
150% for 30sec, 100% for 100sec, 80% continuous
%ED Rating
25% ED
Terminal
Characteristics
Control Method
PWM current control method
Input Signal
Run / Enable / Ex. Fault / Fault Reset
Fault Relay
Output 1(DO1)
AC 250V, 1A or DC 30V, 1A / N.O/N.C output
Healthy Relay
Output 2(DO2)
AC 250V, 1A or DC 30V, 1A / N.O/N.C output
Protection
Function
Instantaneous
over current
Stops at ~ 200% of the current on power side
(Protected by Software)
Blown fuse
Motor stops by blown fuse (when over current
occured)
Overvoltage (DC)
Stops at ~ 800 VDC
Overload
Stops after 100% for 100sec, 150% for 30sec
Current limitation
Stops at 150% of rated current operating condition
Overheat
Protected by thermistor at overheat condition (95℃)
Imbalance between
phases
In case that imbalance rate between three phases
(R, S, T) exceeds 2%.
External Emergency
Stop Signal
Protected by external input signal
Environmental
Conditions
Location
Indoor (Protected from corrosive gases and dust)
Ambient temperature
-10℃∼+40℃(operating temperature), -20℃~ +65℃
(storage temperature)
Humidity
< 90%, (non-condensing)
Vibration
Up to 9.8 ㎨(1G), less than 15Hz, up to 1.96 ㎨
(0.2G) at 15 to 60Hz
*Caution:
1. RCU cannot be used with single-phase power supply. Use three-phase power supply.
2. RCU capacity is used to select the motor with the same capacity.
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Hitachi America Ltd. RCU SERIES
10
3. Installation
3.1 Installation Conditions
Please install the RCU in a location satisfying the following conditions.
1
Avoid rain, high temperature and high humidity.
2
Avoid direct sunlight.
3
The RCU should be protected from dirt, metal dust, and welding
flame.
4
Avoid mounting where excessive vibration exists.
5
Defective main power may cause the RCU damages.
- Using the same power source with welding machine.
- Using a generator as the power source.
- Sudden changes in the main voltage.
6
Keep away from flammable materials.
7
Install on nonflammable surfaces only.
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