Omron SYSDRIVE MX2 SERIES, User Manual

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12 - 6 Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
External Resistor Type
(Model: 3G3AX-RBU23/RBU24/RBU42/RBU43)
Voltage class 3-phase 200-V class 3-phase 400-V class
Model 3G3AX-RBU23 3G3AX-RBU24
3G3AX-RBU42
*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
regenerative braking unit with only a single braking resistor connected may cause damage to the braking re-
sistor.
3G3AX-RBU43
*1
Connection
resistance Continuous
operation 6
Ω
min. 4
Ω
min. 24
Ω
min. 12
Ω
min.
Short-time opera-
tion/Allowable
operation
cycle/Allowable
continuous ON
time 4
Ω
min.
Cycle 1/5
(ON for 2 min/OFF
for 8 min)
2 min
2
Ω
min.
Cycle 1/5
(ON for 2 min/OFF
for 8 min)
2 min
10
Ω
min.
Cycle 1/10
(ON for 10 s/OFF
for 90 s)
10 s
6
Ω
min.
Cycle 1/5
(ON for 2 min/OFF
for 8 min)
2 min
Operating voltage (ON/OFF) ON: 362.5 ± 5 V, OFF: 355 ± 5V
(
−
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
2 units
Model 3G3AX-RBU23 3G3AX-RBU24
3G3AX-RBU42
*1
3G3AX-RBU43
*1
Cable length between regener-
ative braking unit and inverter 4 m max. Braking
resistance:
4
Ω
or lower for
4 m min.
Lower than 4
Ω
for 3 m min.
4 m max. 4 m max.
Protective
function Internal power
module overheat
protection Built-in relay specifications
Cooling fin temperature: Relay trips at approximately 100°C or higher.
Contact rating: 240 VAC 3 A (R load)
36 VDC 2 A (R load)
Minimum load: 5 VDC 50 mA (R load)
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 resis-
tance
4.9 m/s
2
(0.5 G), 10 to 55 Hz
Location At a maximum altitude of 1,000 m (without corrosive gases or dust)
Weight [kg] 6 8 2 6
Paint color Munselle 5Y7/1 (except for cooling fan with aluminum base color)