ON
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Installation and Operational Instructions for
ROBA
®
-brake-checker plus DC Type 028.100.2
(B.0281002.EN)
28/06/2019 HH/GF/GC
Page 3 of 12
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten, Germany
Tel.: +49 8341 804-0, Fax: +49 8341 804-421
www.mayr.com
, E-Mail:
your reliable partner
Application
ROBA
®
-brake-checker monitoring modules are used to ope-
rate DC consumers.
Motion monitoring of the armature disk for released ROBA-
stop
®
safety brakes is possible.
• Consumer operation with overexcitation and/or power
reduction
• Controlled holding voltage (on reduction)
• Simple adjustment of holding voltage and overexcitation
time via a DIP switch
• Fast or slow disconnection
• Armature disk motion recognition
(release and drop-out recognition)
• Preventative function monitoring (wear recognition and
error recognition, functional reserve)
• Wide input voltage range
• Maximum output current I
RMS
= 10 A / 5 A
• Maximum overexcitation current I
O
= 20 A / 10 A
• Automatic reduction to holding voltage U
H
• Electrical isolation of power terminal and control terminal
Function
The ROBA
®
-brake-checker monitoring module is intended
for use with an input voltage of 24 or 48 VDC. The module
monitors the movement of the armature disk and emits the
determined switching condition via control terminal 3 (signal
output).
Critical conditions (line breakages, wear) can be recognised
and the respective signal can be emitted via control terminal
7 (error output).
After a brake-specific overexcitation time period, the inte-
grated voltage reduction mechanism mode adjusts to the
pre-set holding voltage. The voltage reduction mechanism
mode can be switched off using a DIP switch.
In case of switched-off voltage reduction mechanism mode,
the overexcitation time can be adjusted manually to 150 ms,
450 ms, 1 s, 1.5 s, and 2 s using the DIP switch.
It is possible to select between fast and slow switch-off via
the input S/L on the control terminal.
Louder switching noises are generated on the brakes in
case of fast switch-off than in case of slow switch-off.
Dimensions
(mm)
CAUTION
The ROBA
®
-brake-checker with integrated
DC-side disconnection is not suitable for
being the only safety disconnection in ap-
plications!
Accessories:
Mounting bracket set for
35 mm mounting rail
acc. EN 60715:
Article No. 1802911
54
64
54
4.5
5.6
15
30
9
5
73.6
17.5
20
69
Ø4.5
20
Through the monitoring of different parameters, the ROBA
®
-
brake-checker recognises safety critical operating condi-
tions of the brake in advance, as well as acute faults (e.g.
line breakage). These are determined as they occur and are
notified to the user as a warning before the brake can no
longer be operated.
Only the mechanical switching function is checked. Conclu-
sions on the braking torque are not possible (e.g. reduced
friction value due to oiling of the brake lining)
Possible causes for the warning:
• Increasing wear
• Rising coil temperature
• Falling supply voltage
• Line voltage drop on feed lines to the brake
The UL information applies only when the UL mark is
printed onto the product label
.
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