Protection and features
•
Electronic thermal motor protection motor protection against overload.
•
Temperature monitoring of the heatsink ensures that the frequency converter trips in case of overtemperature.
•
The frequency converter is protected against short-circuits between motor terminals U, V, W.
•
If a motor phase is missing, the frequency converter trips and issues an alarm.
•
If a mains phase is missing, the frequency converter trips or issues a warning (depending on the load).
•
Monitoring of the intermediate circuit voltage ensures that the frequency converter trips if the intermediate circuit
voltage is too low or too high.
•
The frequency converter is protected against earth faults on motor terminals U, V, W.
Mains supply (L1/L, L2, L3/N)
Supply voltage
200-240 V ±10%
Supply voltage
380-480 V ±10%
Supply frequency
50/60 Hz
Max. imbalance temporary between mains phases
3.0% of rated supply voltage
True Power Factor
≥0.4 nominal at rated load
Displacement Power Factor (cosφ) near unity
(>0.98)
Switching on input supply L1/L, L2, L3/N (power-ups)
maximum 2 times/min.
Environment according to EN60664-1
overvoltage category III/pollution degree 2
The unit is suitable for use on a circuit capable of delivering not more than 100.000 RMS symmetrical Amperes, 240/480 V
maximum.
Motor output (U, V, W)
Output voltage
0-100% of supply voltage
Output frequency
0-200 Hz (VVC
plus
), 0-400 Hz (u/f)
Switching on output
Unlimited
Ramp times
0.05-3600 s
Cable lengths and cross sections
Max. motor cable length, screened/armoured (EMC correct installation)
15 m
Max. motor cable length, unscreened/unarmoured
50 m
Max. cross section to motor, mains*
Connection to load sharing/brake (M1, M2, M3)
6.3 mm insulated Faston Plugs
Max. cross section to load sharing/brake (M4, M5)
16 mm
2
/6 AWG
Maximum cross section to control terminals, rigid wire
1.5 mm
2
/16 AWG (2x0.75 mm
2
)
Maximum cross section to control terminals, flexible cable
1 mm
2
/18 AWG
Maximum cross section to control terminals, cable with enclosed core
0.5 mm
2
/20 AWG
Minimum cross section to control terminals
0.25 mm
2
* See 9 Specifications for more information!
Digital inputs (pulse/encoder inputs)
Programmable digital inputs (pulse/encoder)
5 (1)
Terminal number
18, 19, 27, 29, 33,
Logic
PNP or NPN
Voltage level
0-24 V DC
Voltage level, logic'0' PNP
<5 V DC
Voltage level, logic'1' PNP
>10 V DC
Voltage level, logic '0' NPN
>19 V DC
Voltage level, logic '1' NPN
<14 V DC
Maximum voltage on input
28 V DC
Input resistance, R
i
approx. 4 kΩ
Max. pulse frequency at terminal 33
5000 Hz
Min. pulse frequency at terminal 33
20 Hz
Specifications
VLT
®
Micro Drive FC 51 Design Guide
MG02K202 - VLT
®
is a registered Danfoss trademark
91
9
9
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