12
vacon • 210 Brake chopper unit (NXB)
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
12.6.3 Braking power and resistance, mains voltage 525–690 Vac/
840–1100 Vdc
NOTE! The braking powers indicated in Table 107 can only be achieved with minimum resistance.
Table 106. Voltage levels
Voltage
Default +18% DC-link voltage level for braking
Vac 525 550 575 600 630 660 690
Vdc 708.8 742.5 776.3 810 850.5 891 931.5
U
br
+18%
836 876 916 956 1004 1051 1099
Table 107. Maximum braking power
Chassis NXB unit
Thermal
current [Ith]
Max braking power at DC-link voltages [kW]
836 876 916 956 1004 1051 1099 1136 *
Ch61 NXB 0170_6 170 284.4 297.9 311.4 325.0 341.2 357.5 373.7 386.2
Ch61 NXB 0208_6 208 347.9 364.5 381.0 397.6 417.5 437.4 457.3 472.6
Ch62 NXB 0261_6 261 436.6 457.4 478.1 498.9 523.9 548.8 573.8 593.0
Ch62 NXB 0325_6 325 543.6 569.5 595.4 621.3 652.3 683.4 714.5 738.4
Ch62 NXB 0385_6 385 644.0 674.6 705.3 736.0 772.8 809.6 846.4 874.7
Ch62 NXB 0416_6 416 695.8 729.0 762.1 795.2 835.0 874.7 914.5 945.2
Ch62 NXB 0460_6 460 769.4 806.1 842.7 879.3 923.3 967.3 1011.2 1045.1
Ch62 NXB 0502_6 502 839.7 879.7 919.6 959.6 1007.6 1055.6 1103.6 1140.5
Table 108. Minimum resistance
Chassis NXB unit
Thermal
current [Ith]
Minimum resistance at DC-link voltages [ohm]
836 876 916 956 1004 1051 1099 1136 *
Ch61 NXB 0170_6 170 4.9 5.2 5.4 5.6 5.9 6.2 6.5 6.7
Ch61 NXB 0208_6 208 4.0 4.2 4.4 4.6 4.8 5.1 5.3 5.5
Ch62 NXB 0261_6 261 3.2 3.4 3.5 3.7 3.8 4.0 4.2 4.4
Ch62 NXB 0325_6 325 2.6 2.7 2.8 2.9 3.1 3.2 3.4 3.5
Ch62 NXB 0385_6 385 2.2 2.3 2.4 2.5 2.6 2.7 2.9 3.0
Ch62 NXB 0416_6 416 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7
Ch62 NXB 0460_6 460 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5
Ch62 NXB 0502_6 502 1.7 1.7 1.8 1.9 2.0 2.1 2.2 2.3
To Next Page
Loading...
Need help?
General
