Drive dimensioning

Dimensioning Service brake

To be dimensioned in accordance with VDI Guideline 2241.The brake has to be dimensioned in accordance with the required braking torque.The inertias to be braked (moments of inertia), relative speeds, deceleration times and operating frequencies must be included in the calculations. If your normal operating conditions are non-standard, please contactyour Lenze salesoffice. The friction surfaces mustbe keptfree of oil and grease atall times.Calculate the required braking torque. Inputspeed to be braked ∆ n
1 = ∆ n
L · i ∆ n
1 =________[rpm]Inputtorque

2

M M
L 1 = i · h M
G 1 =_________[Nm] Maximum momentof inertia J
max = J
LD + J
G + J
M + J
B + J
Z J
max =________[kgm
2 ]Slipping time t
3 = t
B - t
11 t
3 =__________[ms] Deceleration torque( M J
max · ∆ n
1 · 2 Ï€
V = t ± M
12 1 t M
V =_________[Nm]2+
3 - ) · 60 M
1 = Use when lowering a load, for example- M
1 = For normal braking operation CheckSelection In order to achieve the required transmission securityeven under unfavourable operating conditionsSafety factor(dust, humidity) S
B ≥ 2You mustobserve the applicable regulations forsafety-relevantapplications.Required braking torque M
B,req = M
V · S
B ≤ M
B M
B,req =_______[Nm] Brake size = _________ M
B =_________[Nm] ˘ Q
BW , J
B , M
B , t
11 , t
12 , brake size Y Motors chapter Y Technical data, motors Y Spring-applied brake 2-10
G-motion consten 7/2006