Mayr ROBA-servostop 8980.00 00, Operational Instructions

Page: 23 / 26

Installation and operational instructions for
ROBA
®
-servostop
®
Type 8980.00_00
Sizes 50 - 160
(B.8980.EN)
06/10/2022 GF Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten
Phone: +49 8341 804-0, Fax: +49 8341 804-421
Page 23 of 26 www.mayr.com , E-Mail: public.mayr@mayr.com
your reliable partner
9.4 Electrical Connection
DANGER Carry out electrical connection only in
de-energised condition.
Electrical shock possible.
Only trained personnel should carry out
the connection.
Cable
Black +V
Red 0 V
10 Initial Operation
10.1 Definition of the Braking Torques
10.1.1 Static braking torque
Effectively averaged, fully developed torque for slipping
brake with smallest speed values.
Guideline value: n = 3 [rpm]
10.1.2 Dynamic braking torque
Effectively averaged, fully developed torque in a braking
procedure from the output speed up to standstill.
For correct evaluation, a sufficient slip
time is required (sliding speed between
1 m/s and 10 m/s).
The permitted friction work and speed
values must not be exceeded.
10.2 Run-in Procedure
The stated brake nominal torque (see 5.2.1.1 for details)
is valid for the friction lining pairings in new condition in
standard climate conditions.

If the friction lining pairing requires conditioning, the
brakes may have to be run in during operation.

In case of longer storage or downtime, the brakes
may have to be run in to achieve the specified
braking torque.
10.3 Brake Inspection (Before Initial
Operation)

Braking torque inspection:
Please compare the requested braking torque with the
torque stated on the type tag (10) (see also braking
torque
5.2.1.1 for details).

Release function inspection:
by energizing the brake.
10.4 Brake Test (initial operation)
CAUTION
During the Brake Test danger to
personnel and damage to machines
cannot be ruled out in case of
malfunctions (incorrect installation,
control errors etc.). Risks to personnel
and machine damage cannot be ruled
out.
Do not enter the danger zone.
Possibly take measures for catching or
damping the load
The brake test is used to inspect the braking torque, and
must be carried out cyclically depending on the
application. This is to be defined by the customer.
To avoid wear on the brake, the brake test must be
conducted so that the motor builds up torque slowly
against the closed brake up to the lower tolerance limit of
the braking torque.
See the document “Hinweise und
Empfehlungen zum statischen
Bremsentest” (Remarks and suggestions
regarding static brake tests) on our
website under ROBA
®
-servostop
“Downloads”.
If the rotor (4) is pulled through at this torque,
regeneration of the friction linings is necessary.
The regeneration of the friction linings is an independent
procedure.
Please contact
mayr
®
power transmission.