Toshiba VF-AS1 instruction manual Minimum resistance of connectable braking resistors

E6581301

■Minimum resistance of connectable braking resistors

The minimum allowable resistance values of the externally connectable braking resistors are listed in the table below.

Do not connect braking resistors with smaller resultant resistance than the listed minimum allowable resistance values.

(For 200kW or greater models, a dynamic braking resistor drive unit (optional separate unit) is needed.)

Inverter	200V Class		400V Class
Related output capacity	Resistance of	Minimum allowable	Resistance of	Minimum allowable
(kW)	standard option	resistance	standard option	resistance
0.4	200￿	50￿	–	–
0.75	200￿	50￿	200￿	60￿
1.5	75￿	35￿	200￿	60￿
2.2	75￿	20￿	200￿	60￿
3.7/4.0	40￿	16￿	160￿	40￿
5.5	20￿	10￿	80￿	30￿
7.5	15￿	8￿	60￿	20￿
11	10￿	5￿	40￿	20￿
15	7.5￿	5￿	30￿	13.3￿
18.5	7.5￿	3.3￿	30￿	13.3￿
22	3.3￿	3.3￿	15￿	13.3￿	5
30	3.3￿	2.5￿	13.3￿	10￿
37	2￿	1.7￿	8￿	6.7￿
45	2￿	1.7￿	8￿	5￿
55	2￿	1.7￿	8￿	5￿
75	1.7￿	1.3￿	8￿	3.3￿
90	–	–	3.7￿	2.5￿
110	–	–	3.7￿	1.9￿
132	–	–	3.7￿	1.9￿
160	–	–	3.7￿	1.9￿
200	–	–	1.9￿	1￿
220	–	–	1.9￿	1￿
280	–	–	1.4￿	1￿
355	–	–	0.95￿	0.7￿
400	–	–	0.95￿	0.7￿
500	–	–	0.7￿	0.7￿

E-41