7. TECHNICAL DATA
89
• 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.
Fig. 33: The LD and HD pulses
Fig. 34: The duty cycles of the LD and HD pulses
Table 34: The minimum resistance and the brake power, mains voltage 208-240V
* When you use recommended resistor types.
A. Relative power
B. Light duty
C. Heavy duty
N800A
Mains voltage 208-240 V, 50/60 Hz, 3~
The minimum brake
resistance [Ω]
30.0
20.0
10.0
5.5
3.0
1.4
Brake power* @405 VDC
[kW]
2.6
3.9
7.8
11.7
25.2
49.7
2.6
Frame
MR4
MR5
MR6
MR7
MR8
MR9
Summary of Contents for N800 Series
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Page 19: ...3 MOUNTING 3 2 2 WALL MOUNTING OF MR5 Fig 3 ThedimensionsoftheACdrive MR5 13 N800A ...
Page 20: ...3 MOUNTING 3 2 3 WALL MOUNTING OF MR6 Fig 4 ThedimensionsoftheACdrive MR6 14 N800A ...
Page 21: ...3 MOUNTING 3 2 4 WALL MOUNTING OF MR7 Fig 5 ThedimensionsoftheACdrive MR7 15 N800A ...
Page 23: ...3 MOUNTING 3 2 6 WALL MOUNTING OF MR8 IP00 Fig 7 ThedimensionsoftheACdrive MR8 IP00 17 N800A ...
Page 52: ...4 POWERCABLING 46 3 Removethecablecover MR8 MR9 N800A ...
Page 53: ...4 POWERCABLING 47 4 Removethecableentryplate MR8 MR9 N800A ...
Page 54: ...4 POWERCABLING 48 5 MR9only Loosenthescrewsandremovethesealingplate N800A ...
Page 55: ...4 POWERCABLING 49 6 RemovetheEMCshieldplate A ThewingnutinMR8 A MR9 N800A ...
Page 80: ...5 CONTROLUNIT 74 Fig 30 Thegalvanicisolationbarriers A Thecontrolunit B Thepowerunit N800A ...
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