Installation and Operational Instructions for
ROBA
®
-brake-checker plus DC Type 028.700.2
(B.0287002.EN)
your reliable partner
25/02/2022 HH/GF
Page 9 of 11
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:
99
Time Delays
Delays may occur during the detection and processing of
various brake conditions, input and output signals.
Switch-on delay
≤ 4 ms
Delay time
≤ 4 ms
Signal delay
≤ 20 ms
MTTF
110 years at 60 °C
180 years at 40 °C
Duration of use
20 years
The basis of the MTTF calculation forms (if available) the
information of the component manufacturer supplemented
by the information from the Siemens standard SN 29500.
For the calculation, a simplified Parts-Count procedure has
been used (EN ISO 13849-1)
Reliability Nominal Values
Cycle frequency
In order to prevent thermal overload, an upper cycle limit
must be observed for especially high-performance brakes in
operation with fast switch-off.
Cycles/Minute
Braking performance P (24 VDC)
Device Fuses
Installation of a device fuse into the supply voltage line of the
ROBA
®
-brake-checker monitoring module.
Short-circuits or earth short-circuits can lead to ROBA
®
-
brake-checkermonitoring module failures. After fuse
elements have reacted to a malfunction, the ROBA
®
-brake-
checker monitoring module must be checked for functional
and operational safety (overexcitation voltage, switch-off
voltage, response delay time, holding voltage). The same
also applies after the magnetic coil of the brake has failed.
Intended Use
ROBA
®
-brake-checker products have been developed,
manufactured and tested as electronic equipment in
compliance with the DIN EN 61000 standard and in
accordance with the EMC directive. During installation,
operation and maintenance of the product, the requirements
for the standard must be observed. ROBA
®
-brake-checker
products are for use in machines, systems and devices
and must only be used in the situations for which they
are ordered and confirmed. The products are designed
for installation into electrical control cabinets and terminal
boxes. Using them for any other purpose is not allowed.
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