Stober SD6 - Projecting

ID 442426.04 244WE KEEP THINGS MOVING
Holding brake
11
Manual SD6
In the first step calculate the ratio of torques V
M
as a percentage:
If V
M
> 200 %, restrict V
M
= 200 %.
In the next step, determine the current associated with M
Bstat
:
Compare I
0Bstat
with I
N
of the drive controller:
1. If I
0Bstat
≤ 2 * I
N
: 
B304[0] = V
M
, B305[0] = -V
M
2. If I
0Bstat
> 2 * I
N
: 
V
M2
= 100 * 2 * I
N
/I
0
; B304[0] = V
M2
, B305[0] = -V
M2
Example
•M
Bstat
= 10 Nm
•M
0
= 6.6 Nm
•I
0
= 4.43 A
•I
N
= 6 A
Result: B304[0] = 151 %, B305[0] = -151 %
11.9.1.2 Asynchronous motor
Calculate the torques that must be entered in B304[0] and B305[0] for the
brake test according to the following instructions:
The following values will be required:
•M
B
holding torque of the brake
•M
N
nominal torque of the motor
•M
K
/M
N
ratio of tilting torque to nominal torque
•I
N
nominal current of the drive controller
• E171 Id,nom
• E172 Iq,nom
Note that you can only obtain the correct values from E171 and E172 in the
following manner: Perform complete projecting for the motor, transfer the
project to the drive controller, save the project and then read the values from
E171 and E172 in online mode.
In the first step calculate the ratio of torques V
M
as a percentage:
If V
M
> 200 %, restrict V
M
= 200 %.
If M
K
/M
N
< 2, restrict V
M
= M
K
/M
N
* 100 %.
In the next step, determine the current associated with M
B
:
Compare I
0Bstat
with I
N
of the drive controller:
V
M
M
Bstat
M
0
-----------------
100=
I
0Bstat
I
0
V
M
=
V
M
10Nm
66Nm
-------------------
100 151%==
I
0Bstat
443A 151% 669A==
I
0Bstat
669A 2I
N
 12A==
V
M
M
B
M
0
--------
100%=
I
0B
E171
2
V
M
E172
2
+=