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51

References

(continued)

1

Variable speed drives

Altivar Process ATV900

Option: Braking resistors

Presentation: page 8 Variable speed drives: page 18 Configuration and runtime tools: page 28 Combinations: page 32 Dimensions: page 76

References for a medium braking cycle

(continued)

For drives Degree of protection of the resistor Ohmic value at 20 C/ 68 F Average power available at 50 C/ 122 F (1) Quantity required per drive Reference Weight & kW kg/ lb

Supply voltage: 500...690 V 50/ 60 Hz

ATV930U22Y6 IP20 100 0.26 1 VW3A7740 2.500/ 5.511 ATV930U30Y6 IP20 100 0.26 1 VW3A7740 2.500/ 5.511 ATV930U40Y6 IP20 100 0.26 1 VW3A7740 2.500/ 5.511 ATV930U55Y6 IP20 60 0.5 1 VW3A7741 3.800/ 8.377 ATV930U75Y6 IP20 60 0.5 1 VW3A7741 3.800/ 8.377 ATV930D11Y6 IP20 28 0.96 1 VW3A7742 4.200/ 9.259 ATV930D15Y6 IP20 28 0.96 1 VW3A7742 4.200/ 9.259 ATV930D18Y6 IP20 16 1.9 1 VW3A7743 6.400/ 14.109 ATV930D22Y6 IP20 16 1.9 1 VW3A7743 6.400/ 14.109 ATV930D30Y6 IP20 16 1.9 1 VW3A7743 6.400/ 14.109 ATV930D37Y6 IP20 10 2.9 1 VW3A7744 9.000/ 19.841 ATV930D45Y6 IP20 10 2.9 1 VW3A7744 9.000/ 19.841 ATV930D55Y6 IP23 8 3.8 1 VW3A7745 25.500/ 56.217 ATV930D75Y6 IP23 5 6.9 1 VW3A7746 30.500/ 67.240 ATV930D90Y6 IP23 5 6.9 1 VW3A7746 30.500/ 67.240 (1) Load factor for resistors: The value of the average power that can be dissipated at 50 C/122 F from the resistor into the casing is determined for a load factor during braking that corresponds to the majority of normal applications: - Normal duty: 4 s braking with a 1.35 Tn braking torque for a 40 s cycle - Heavy duty: 4 s braking with a 1.65 Tn braking torque for a 40 s cycle

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