Vacon 100 INDUSTRIAL - Page 115

•
The light duty cycle is for brake resistor cyclic use (1 LD pulse in a 120-second period).
The light duty resistor is rated for a 5-second ramp from full power to 0.
•
The heavy duty cycle is for brake resistor cyclic use (1 HD pulse in a 120-second period).
The heavy duty resistor is rated for a 3-second full power braking with a 7-second ramp
to 0.
A B
P [%]
120
100
80
60
40
20
0
0 1 2 3 4 5 6 7 8 9
t [s]
10
Fig. 44: The LD and HD pulses
A. Light duty
B. Heavy duty
0
0
3
5 10
100
P [%]
t [s]
120
240
123 125 130
Fig. 45: The duty cycles of the LD and HD pulses
Table 29: The minimum resistance and the brake power, mains voltage
380-500 V
Enclosure size The minimum brake
resistance [Ω]
Brake power* @845 VDC
[kW]
MR8 6.5 109.9
MR9 3.3 216.4
MR10 1.4 400
MR12 2 x 1.4 ** 800
TECHNICAL DATA, VACON® 100 INDUSTRIAL VACON · 115
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