General Technical Data; Protection And Features; Mains Supply (L1/L, L2, L3/N); Motor Output (U, V, W) - Danfoss VLT Micro Drive FC 51 Operating Manual

VLT® Micro Drive FC 51
Operating Guide

8 General Technical Data

8.1 Protection and Features

• Electronic motor thermal protection against overload.
• Temperature monitoring of the heat sink ensures that the drive trips if there is overtemperature.
• The drive is protected against short circuits between motor terminals U, V, W.
• When a motor phase is missing, the drive trips and issues an alarm.
• When a mains phase is missing, the drive trips or issues a warning (depending on the load).
• Monitoring of the DC-link voltage ensures that the drive trips when the DC-link voltage is too low or too high.
• The drive is protected against ground faults on motor terminals U, V, W.

8.2 Mains Supply (L1/L, L2, L3/N)

Mains supply (L1/L, L2, L3/N)
Supply voltage
Supply voltage
Supply frequency
Maximum imbalance temporary between mains phases
True power factor
Displacement power factor (cosφ) near unity
Switching on input supply L1/L, L2, L3/N (power-ups)
Environment according to EN60664-1
The unit is suitable for use on a circuit capable of delivering not more than 100000 RMS symmetrical Amperes, 240/480 V maximum.

8.3 Motor Output (U, V, W)

Output voltage
Output frequency
Switching on output
Ramp times

8.4 Cable Length and Cross-section

Maximum motor cable length, shielded/armored (EMC-correct in-
stallation)
Maximum motor cable length, unshielded/unarmored
Maximum cross-section to motor, mains
Connection to load sharing/brake (M1, M2, M3)
Maximum cross-section to load sharing/brake (M4, M5)
Maximum cross-section to control terminals, rigid wire
Maximum cross-section to control terminals, flexible cable
Maximum cross-section to control terminals, cable with enclosed
core
Minimum cross-section to control terminals

8.5 Digital Inputs (Pulse/encoder Inputs)

Programmable digital inputs (pulse/encoder)
Terminal number
Logic
Voltage level
Danfoss A/S © 2020.09
General Technical Data
3.0% of rated supply voltage
≥0.4 nominal at rated load
Maximum 2 times/minute
Overvoltage category III/pollution degree 2
0–100% of supply voltage
0–200 Hz (VVC
See chapter Specifications for more information.
6.3 mm insulated Faston plugs
2
1.5 mm /16 AWG (2x0.75 mm
AQ348848915086en-000101 / 130R0943 | 29
200–240 V ±10%
380–480 V ±10%
50/60 Hz
(>0.98)
+
), 0–400 Hz (u/f )
Unlimited
0.05–3600 s
15 m (49 ft)
50 m (164 ft)
2
16 mm /6 AWG
2
)
2
1 mm /18 AWG
2
0.5 mm /20 AWG
2
0.25 mm /24 AWG
5 (1)
18, 19, 27, 29, 33
PNP or NPN
0–24 V DC