8 Selection Guide
8.1 Selection Flow Chart
To select the correct size of brake resistor for an application, refer to the flow chart in Illustration 8.1.
1. Select an answer to each question from the top down.
2. Follow the answer to reach the next question, or to obtain guidance in calculating inertia or duty cycle.
3. The final box indicates the correct selection table, or whether to call hotline for additional guidance.
Select a 10%
duty cycle brake
resistor from the
selection tables
Select a 10%
duty cycle brake
resistor from the
selection tables
Select a 40%
duty cycle brake
resistor from the
selection tables
Please contact
Danfoss
1)
Please contact
Danfoss
1)
Low intertia
ramp down>15 s
Low or high
intertia?
Horizontal
Vertical
Horizontal or
vertical movement?
Determine braking
time of the
application
Braking time<
brake resistor period
Braking time>
brake resistor period
Calculate duty
cycle
duty cycle <10% duty cycle >40%
duty cycle ranging
from 10-40%
High inertia
ramp down<15 s
or don’t know
Compare the braking
time with the resistors
braking period
Illustration 8.1 Brake Resistor Selection Flow Chart
1) When contacting Danfoss, provide the following data:
•
Nominal power 100%
•
Maximum power during brake cycle
•
Braking time/duty cycle
•
Supply voltage (max. DC)
•
Resistance (Ω)
•
With or without temperature switch
•
IP enclosure rating
•
Type of reference drive
Selection Guide
Design Guide
32 Danfoss A/S © Rev. 05/2014 All rights reserved. MG90O202
88
To Next Page
Loading...
Need help?
General
