MPH-02, MPB-02, MPD-02
Motor, Mechanical Axis System, Measuring Systems
5-13
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
The controller can check the effectiveness of the holding brake and its
released state by starting a routine:
•
automatically each time the drive enable is set and reset
- or -
•
depending on the situation by
P-0-0541, C2100 Brake check
command
If the holding brake is all right the drive is operational after the routine is
over. If the braking torque is too low the controller outputs the respective
message.
The relevant bits for the desired kind of brake monitoring have to be set in
P-0-0525, Holding brake control word
.
The automatic brake monitoring function is started when "AF" (drive
enable) is set. After the time required for releasing the holding brake the
motor generates a torque or a force; this sets the motor slightly in motion
if the status of the holding brake is without error. The maximum value of
this torque or force is determined during initial commissioning (see "Notes
on Commissioning") and entered in parameter
P-0-0545, Test torque for
releasing motor holding brake
.
If the check was successful, the drive starts operations.
If the motor does not move during this check, the error message
F2069
Error when releasing the motor holding brake
is output; the drive
switches off.
When "AF" (drive enable) is reset by the control unit the holding torque of
the brake is checked. After the holding brake was applied, a torque or
force is generated that mustn’t yet set the motor in motion if the status of
the holding brake is correct. The value of this torque or force can be
entered in
parameter P-0-0547, Test torque with holding brake
applied
. This value, too, is determined during initial commissioning (see
"Notes on Commissioning").
If the motor does not move during this check, the brake has the specified
or required holding torque.
If the motor moves during this check, the diagnostic message
E2069
Brake torque too low
is output and drive enable is reset internally.
The warning E2069 is triggered by the following motor movement:
•
rotary motors:
> 2 degr
•
linear motors:
pole pair distance (in mm) / 180
→
P-0-0018 / 180
CAUTION
Possible property damage caused by vertical
axis moving down!
⇒
Take constructional precautions!
At the start of the
P-0-0541, C2100 Brake check command
the drive
must be in "AF" (drive enable).
The routine corresponds to that of automatic monitoring (see above).
For reestablishing the brake torque parameter
P-0-0544, C3900
Command Abrasion of brake
can be started. To do this, drive enable
("AF") must have been set! After the command was started, the drive is
accelerated to 100
rpm or 100
mm/min. Active acceleration and
deceleration ramps and filters (P-0-1201, P-0-1202, P-0-1203, P-0-1211,
P-0-1213 and P-0-1222) are taken into account! When the motor has
reached the command velocity, the brake is applied for 400 ms. After the
Monitoring the Holding Brake
Automatic Monitoring
"Brake Check" Command
Reestablishing the Holding
Brake Torque
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com
