7.2 Mains Supply to Drive Modules
The unit is suitable for use on a circuit capable of delivering not more than 100 kA short circuit current rating (SCCR) at 480 V.
Supply terminals
L1, L2, L3
Supply voltage
(1)
380–500 V ±10%
Supply frequency
50/60 Hz ±5%
Maximum imbalance temporary between mains phases
3.0% of rated supply voltage
(2)
True power factor (λ)
≥0.9 nominal at rated load
Displacement power factor (cos Φ)
Near unity (>0.98)
Switching on the input supply L1, L2, and L3 (power-ups)
Maximum 1 time/2 minutes
Environment according to EN 60664-1
Overvoltage category III/pollution degree 2
1
Mains voltage low/mains drop-out: During low mains voltage or a mains dropout, the drive continues until the DC-link voltage drops below the
minimum stop level, which corresponds typically to 15% below the drive's lowest rated supply voltage. Power-up and full torque cannot be expec-
ted at mains voltage lower than 10% below the drive's lowest rated supply voltage.
2
Calculations based on UL/IEC 61800-3.
7.3 Motor Output
Voltage output
0–100% of supply voltage output
Output frequency
0–590 Hz
(1)
Output frequency in flux mode
0–300 Hz
Switching on output
Unlimited
Ramp times
0.01–3600 s
1
Dependent on voltage and power.
7.4 Torque Characteristics
The torque response time depends on application and load but as a rule, the torque step from 0 to reference is 4–5 x torque rise
time.
Starting torque (constant torque)
Maximum 150% for 60 s once in 10 minutes
(1)
Overload torque (constant torque)
Maximum 150% for 60 s once in 10 minutes
(1)
Torque rise time in FLUX (for 5 kHz fsw)
1 ms
Torque rise time in VVC+ (independent of fsw)
10 ms
1
Percentage relates to the drive's nominal current.
7.5 Ambient Conditions for Drive Modules
Enclosure
IP00/UL Type Chassis
Vibration test (standard/ruggedized)
0.7 g/1.0 g
Relative humidity
5%-95% (IEC 721-3-3; Class 3K3 (non-condensing) during opera-
tion)
Aggressive environment (IEC 60068-2-43) H
2
S test
Class Kd
Aggressive gases (IEC 60721-3-3)
Class 3C3
Test method according to IEC 60068-2-43
H2S (10 days)
Ambient temperature at SFAVM switching mode
- with derating
Maximum 55 °C (131 °F)
(1)
- at full continuous FC output current (HO)
Maximum 45 °C (113 °F)
(1)
- at full continuous FC output current (NO)
Maximum 40 °C (104 °F)
(1)
Minimum ambient temperature during full-scale operation
0 °C (32 °F)
Minimum ambient temperature at reduced speed performance
-10 °C (14 °F)
AQ434333248451en-000101 / 130R1286
68 | Danfoss A/S © 2023.01
Specifications
VLT Ea4 Parallel Drive Modules
Operating Guide
Summary of Contents for VLT Ea4
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