NORD Drivesystems BU0180 User Manual
Page 83
6 Parameterisation
BU 0180 GB-0914
Pre-series version
83
Parameter
{Factory setting}
Setting value / Description / Note
Device
Supervisor
Parameter
set
P107
Brake reaction time
(Brake reaction time)
P
0 ... 2.50 s
{ 0.00 }
Electromagnetic brakes have a physically-dependent delayed reaction time when actuated. This
can cause a dropping of the load for lifting applications, as the brake only takes over the load
after a delay.
This reaction time can be taken into account under parameter (P107).
Within the adjustable application time, the FI supplies the set absolute minimum frequency (P505)
and so prevents movement against the brake and load drop when stopping.
See also the parameter >Release time< (P114)
NOTE:
The optional module SK CU4-MBR must be used for the control of electromagnetic
brakes (especially for lifting gear). The minimum absolute frequency (P505) should
never be less than 2.0Hz.
NOTE:
If a time > 0 is set in (P107) or (P114), at the moment the FI is switched on, the level
of the excitation current (field current) is checked. If no magnetising current is
present, the FI remains in magnetising mode and the motor brake is not released.
NOTE:
If brake control is used, care must be taken that parameter (P107) is not set to 0
Recommendation for applications:
Lifting equipment with brake, without speed feedback Lifting equipment with brake
P114 = 0.2...0.3 sec. *
P107 = 0.2...0.3 sec. *
P201…P208 = Motor data
P505 = 2...4 Hz
for safe start-up
P112 = 401 (off)
P536 = 2.1 (off)
P537 = 150%
P539 = 2/3 (I
SD
monitoring)
to prevent load drops
P214 = 50...100% (precontrol)
*
Setting
values
(P107/P114)
depend on the brake type and
motor size. For smaller powers
smaller values than those stated
may be required.
Output
frequency
P107
Brake released
P114
or
P107, when P114 = 0
ON signal
P505
OFF signal
Time