Lenze 9400 - Manual (Page 547)

Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
547
11 Basic drive functions
11.12 Brake control
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
11.12.7 Grinding the brake
This function may be required after the brake has been replaced. The holding torque specified in the
data sheet is only reached if the friction partners are ground in after mounting.
[11-45] Formula for estimating the friction energy during grinding process
Requirements
In order to be able to activate the grinding of the brake, the following conditions must be fulfilled:
• The grinding speed in C02596 is set higher than 0 rpm.
• The brake is activated, i.e. the "brake closing time" ( C02589 ) and the "waiting time for status
monitoring" ( C02591 ) are elapsed.
• No other source for controller inhibit is active so that the controller inhibit can be deactivated
by the brake control.

Stop!
If this function is activated, the drive is automatically accelerated to the grinding speed
parameterised in C02596 .
• The axis must move freely without driving against the travel range limitations.
• The maximally permissible friction energy of the brake must not be exceeded
(observe the specifications of the manufacturer)!
W
total
J [ ] M
K
Nm [ ] 2π
60
------ N min
1 –
[ ] t
total
s [ ] ⋅ ⋅ ⋅ ∼

Note!
When grinding the brake, ensure that the motor shaft can be kept at speed against the
closed holding brake.
• For this purpose, make sure that the maximum torque of the motor control ( C00057/
2 ) is higher than the holding torque of the brake.