Danfoss VLT AutomationDrive FC 300 Design Manual page 101

How to Order
FC 302
Frequency converter data
Mains P R
m min
[type] [kW] [Ohm]
T7 4 180
T7 5,5 130
T7 7,5 94
T7 11 69,7
T7 15 46,8
T7 18,5 36,0
T7 22 33,7
T7 30 22,5
T7 37 18,0
T7 45 13,5
T7 55 13,5
T7 75 8,8
T7 90 8,8
Table 5.11 FC 302 Vertical Braking
Horizontal braking: duty cycle 10% and maximum 120 s repetition rates according the reference brake profile. Average power corresponds to 6%.
Vertical braking: duty cycle 40% and maximum 120 s repetition rates according the reference brake profile. Average power corresponds to 27%.
Cable cross section: recommended minimum value based upon PVC insulated copper cable, 30 °C ambient temperature with normal heat
dissipation.
All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper (60/75°C) conductors are
recommended.
Thermal relay: Brake current setting of external thermal relay. All resistors has a build-in thermal relay switch N.C.
IP54: flat pack type with 1000 mm fixed unscreened cable. Vertical and horizontal mounting. Derating required by horizontal mounting.
IP21 & IP65: with screw terminal for cable termination. Vertical and horizontal mounting. Derating required by horizontal mounting.
IP20: with screw terminal for cable termination. Floor mounting.
P : Frequency converter nominal output power as HO.
m
R : Minimum permissible brake resistor value by frequency converter.
min
R is the nominal resistor value that ensure a brake power on motor shaft of 150%/160% for 1 minute.
br,nom
R : resistor value and resistance of the brake resistor.
rec
P : Power rating of the brake the brake resistor as the average power during continuous braking.
br,cont
150/160%
0 0.8 3
Illustration 5.1 Horizontal reference brake profile
* Maximum 120 s repetition rates with equal average power or duty cycle.
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®
VLT AutomationDrive FC 300 Design Guide, 0.25-75 kW
R ,nom R P ,cont.
br rec br
[Ohm] [Ohm] [kW]
216 200 1,700
156 145 2,200
113 105 3,200
76,2 72 4,200
55,5 52 6,000
44,7 42 8,000
37,5 31 10,000
29,1 27 14,000
23,5 22 17,000
19,3 15,5 21,000
15,7 13,5 26,000
11,5 11 36,000
9,5 9,1 42,000
30* [s]
®
MG33BE02 - VLT is a registered Danfoss trademark
Vertical braking
Brake Resistor data
Ordering no.
Screw Screw
Wire IP54 Terminal Terminal
IP21 IP65
[p/n] [p/n] [p/n]
x 175u3122 175u3123
x 175u3106 175u3107
x 175u3132 175u3133
x 175u3142 175u3143
x x x
x x x
x x x
x x x
x x x
x x x
x x x
x x x
x x x
150/160%
100%
0
Illustration 5.2 Vertical reference brake profile
Installation
Cable
Thermal
Screw
Cross
relay
Terminal
section
IP20
[p/n] 2 [A]
[mm ]
x 1,5 2,8
x 1,5 3,7
x 1,5 5,2
x 1,5 7,2
175u3242 2,5 10,8
175u3243 2,5 13,9
175u3244 4 18
175u3201 10 22,8
175u3202 10 27,8
175u3205 16 36,9
175u3209 16 43,9
175u3212 25 57,3
175u3214 35 68
30* [s]
10.5 12
5 5
99