Installation and Operational Instructions for
ROBA
®
-quick Type 520.1_ _ and Type 520.2_ _.0
Sizes 3 to 9
(B.5.2.EN)
26/08/2013 TK/RB/SU
Chr. Mayr GmbH + Co.
KG
Eichenstraße 1, D-87665 Mauerstetten, Germany
Tel.: +49 8341 804-0, Fax: +49 8341 804-421
Page 8 of 9
Fig. 4
Fig. 5
Installation
1.
Mounting the coil carrier (1):
Screw the coil carrier (1) onto the machine wall (observe the
tightening torque acc. Table 1).
Centred by a ball bearing (8), Figs. 2/3.
Centred on diameter "Z", Fig. 4.
Centred on outer diameter "H", Fig. 4.
The maximum permitted centre offset "V
1
" acc. Table 1 may not
be exceeded (Figs. 4 and 5).
2.
Installation of the armature disk (2):
2.1. Lay the spring washers (4) under the cap screws (3).
The cap screws (3) must be secured with Loctite 243.
2.2. Mount the armature disk (2) onto the mounting part or onto
the flange hub (5) (observe the tightening torque acc.
Table 1).
2.3. Align the armature disk (2)
(max. permitted radial run-out 0,15 mm).
The friction surfaces must be kept free of oil
and grease.
3.
Installation of the mounting part or the flange hub (5):
3.1. Adjust the air gap "a" according to Table 1 and Figs. 2/3.
3.2. Secure the mounting part or flange hub (5) axially backlash-
free.
Axial backlash changes the air gap "a" and can lead to the
armature disk (2) rubbing against the coil carrier (1) (see
Installation Examples Figs. 2 and 3).
Please observe the maximum permitted centre offset "V"
according to Table 1 and Figs. 4 and 5.
Electrical Connection
The brake magnetic coil is connected to a DC voltage supply.
The level of coil voltage is engraved into the coil carrier (1).
A 24 V coil is integrated into the brake on standard designs.
When electromagnetic devices are switched off, cut-off peaks
may occur. These can lead to destruction of the device and must
therefore be damped.
This damping can have a negative effect on the connection
times given in the catalogue.
Ensure that the voltage supply is fused acc. the current values..
The brakes are designed for a relative duty cycle of 100 % in
static operation at nominal voltage.
Maintenance and Inspection
The friction surfaces must be kept free of grease and oil,
otherwise drastic drops in torque will occur.
Please inspect the air gap "a" and the permitted centre offsets
“V" and "V
1
" (Figs. 4 and 5) at regular intervals. Bearing backlash
and wear on the friction surfaces alter the permitted Table values
and can cause brake failure.
Apart from this, ROBA
®
-quick electromagnetic brakes are
maintenance-free.
Disposal
Our electromagnetic brake components must be disposed of
separately as they consist of different materials. Please also
observe the relevant authority regulations. Code numbers may
vary according to the disassembling process (metal, plastic and
cables).
Electronic components
(Rectifier / ROBA
®
-switch):
Products which have not been disassembled can be disposed of
under Code No. 160214 (mixed materials) or components under
Code No. 160216, or can be disposed of by a certified disposal
firm.
Steel components:
Steel scrap
(Code No. 160117)
Coil carriers (steel pads with friction linings):
Brake linings
(Code No. 160112)
a
V
1
V
V
Ø
Z
Ø
H
a
