Fuses - Danfoss VLT AutomationDrive FC 302 Instruction Manual

Specifications
Terminal number
Output voltage
Maximum load
The 10 V DC supply is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Control characteristics
Resolution of output frequency at 0–1000 Hz
System response time (terminals 18, 19, 27, 29, 32, 33)
Speed control range (open-loop)
Speed accuracy (open-loop)
All control characteristics are based on a 4-pole asynchronous motor
Control card performance
Scan interval
Control card, USB serial communication
USB standard
USB plug
CAUTION
Connection to PC is carried out via a standard host/device USB cable.
The USB connection is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
The USB connection is not galvanically isolated from protection ground. Use only an isolated laptop/PC as the
connection to the USB connector on the adjustable frequency drive or an isolated USB cable/drive.

8.7 Fuses

8.7.1 Fuse Selection
Use recommended fuses and/or circuit breakers on the supply side as protection in case of component breakdown inside
the adjustable frequency drive (first fault).
NOTICE!
Use of fuses on the supply side is mandatory for IEC 60364 (CE) and NEC 2009 (UL) compliant installations.
Use the recommended fuses to ensure compliance with EN50178. Use of recommended fuses and circuit breakers ensures
that possible damage to the adjustable frequency drive is limited to damages inside the unit. For further information, see
Application Note Fuses and Circuit Breakers.
The fuses below are suitable for use on a circuit capable of delivering 100000 A
adjustable frequency drive voltage rating. With the proper fusing, the adjustable frequency drive short-circuit current rating
(SCCR) is 100000 A .
rms
N90K-N250
N55K-N315
Table 8.5 Recommended Fuses
MG34U422
Instruction Manual
380–500 V
525–690 V
Danfoss A/S © 06/2015 All rights reserved.
1:100 of synchronous speed
30–4000 RPM: Maximum error of ±8 RPM
USB type B device plug
(symmetrical), depending on the
rms
type aR
type aR
50
10.5 V ±0.5 V
25 mA
±0.003 Hz
≤2 ms
5 ms
1.1 (full speed)
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