Lenze G-Motion Gear Motors - CTi Automation

2
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 contact your Lenze sales
office.
The friction surfaces must be kept free of oil and grease at all times.
Calculate the required braking torque.
Input speed to be braked ∆n1 = ∆nL · i ∆n1 = ________ [rpm]
Input torque M1 = ML
i · hG
M1 = _________ [Nm]
Maximum moment of inertia Jmax = JLD + JG + JM + JB + JZ Jmax = ________ [kgm 2 ]
Slipping time t3 = tB - t11 t3 = __________ [ms]
Deceleration torque
MV = Jmax · ∆n1 · 2π
± M1
(t3 - t12
) · 60
2
+ M1 = Use when lowering a load, for example
- M1 = For normal braking operation
Check Selection
In order to achieve the required transmission security
even under unfavourable operating conditions
Safety factor (dust, humidity) SB ≥ 2
You must observe the applicable regulations for
safety-relevant applications.
MV = _________ [Nm]
Required braking torque MB,req = MV · SB ≤ MB MB,req =_______ [Nm]
Brake size = _________ MB = _________ [Nm]
˘ QBW, JB, MB, t11, t12, brake size Y Motors chapter Y Technical data, motors Y Spring-applied brake
2-10 G-motion const en 7/2006
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