Omron SYSDRIVE MX2 SERIES, User Manual

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12 Options
Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
12-2
Regen
erative
Braking
Unit
(Mo
d
el:
3G
3AX-RB
U
)
12
12-
2-1
S
pecificatio
ns
12-2 Regenerative Braking Unit
(Model: 3G3AX-RBU )
12-2-1 Specifications
Built-in Resistor Type (Model: 3G3AX-RBU21/RBU22/RBU41)
Voltage class 3-phase 200-V class 3-phase 400-V class
Model 3G3AX-RBU21 3G3AX-RBU22
3G3AX-RBU41
*1
*1. To use the braking resistor (Model: 3G3AX-RAB/RBB/RBC) for the 400-V class regenerative braking unit, be sure
to remove the built-in resistor and connect two resistors of the same model in series. Using a 400-V class regen-
erative braking unit with only a single braking resistor connected may cause damage to the braking resistor.
Connection resistance 17
Ω
min. 17
Ω
min. 34
Ω
min.
Operating voltage (ON/OFF) ON: 362.5 ± 5 V
OFF: 355 ± 5 V
(
−
5% or
−
10% setting available
*2
)
*2. Use DIP switches (SW1 to SW4) on the regenerative braking unit to set the number of connected units.
ON: 725 ± 5 V
OFF: 710 ± 5 V
(
−
5% or
−
10% setting
available
*2
)
Operation indication LED ON (Lit)
Maximum number of units for parallel
interlocking operation
*2
5 units
Model 3G3AX-RBU21 3G3AX-RBU22
3G3AX-RBU41
*1
Cable length between regenerative
braking unit and inverter 5 m max.
Built-in
resistor Internal resistance 120 W 180
Ω
120 W 20
Ω
120 W 180
Ω
×
2 in series
Allowable continuous ON time 10 s max. 0.5 s max. 10 s max.
Allowable operation
cycle Cycle 1/10
(ON for 10 s/OFF for 90 s)
Cycle 1/80
(ON for 0.5 s/OFF for 40 s)
Cycle 1/10
(ON for 10 s/OFF for 90 s)
Power consumption Instantaneous: 0.73 kW
Short-time rating: 120 W
Instantaneous: 6.6 kW
Short-time rating: 120 W
Instantaneous: 1.46 kW
Short-time rating: 240 W
Protective
function Built-in resistor overheat
protection Built-in relay specifications
Built-in resistor temperature: Relay trips at approximately 200°C or higher
and resets at approximately 170°C or lower.
Built-in thermal fuse (No resetting)
*3
*3. The built-in resistor has a thermal fuse. If the alarm terminals are not connected, the fuse may blow out in order
to prevent the overheating. If the fuse blows out, the regenerative braking unit must be repaired.
Contact rating: 250 VAC 200 mA (R load)
12 VDC 500 mA (R load)
42 VDC 200 mA (R load)
Minimum load: 1 mA
Operating
environment Operating ambient temperature
−
10 to 50°C
Storage ambient temperature
−
20 to 65°C
Operating ambient humidity 20% to 90% (with no condensation)
Vibration resistance
5.9 m/s
2
(0.6 G) 10 to 55 Hz
Location At a maximum altitude of 1,000 m (without corrosive gases or dust)
Weight [kg] 1.7 2.0
Paint color Munselle 5Y7/1 (except for cooling fan with aluminum base color)