Installation and Operational Instructions for
ROBA
®
-brake-checker AC Type 059.500.2
(B.0595002.EN)
your reliable partner
27/06/2019 HH/GF/GC
Page 6 of 8
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:
66
MTTF
140 years at 60 °C
200 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.
The simplified Parts Count procedure ISO 13849-1 has been
used for the calculation.
Interruption of the voltage at control terminal 1 Supply volt-
age +24 VDC:
All outputs (signal, error, warning) are reset.
• Signal (output) is set to 0 VDC (low)
• Error (output) is set to 24 VDC (high)
Reliability Nominal Values
Reset
Fast switch-off
Intended Use
ROBA
®
-brake-checker products have been developed,
manufactured and tested as electronic equipment in
compliance with the DIN EN 50178 standard and in
accordance with the EU Low Voltage 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.
Frequency Change (50/60 Hz)
After a frequency change in the input voltage, the switching-
on process (energisation) is not detected, or an error is
indicated.
• Switch on (energise) the brake again
• After this “initialisation switching“, the ROBA
®
-brake-
checker can be operated as normal.
Inching Mode
During inching mode (fast sequence of switching on and
off), no reliable detection is possible.
After the end of inching mode, restart the monitoring
function:
• De-energise the brake
• Switch on (energise) the brake again
Repeated switch-on (energisation) before the brake is closed
generates a fault when the maximum current is reached.
Start process
During each individual start process, all outputs (signal,
error, warning) are reset.
The outputs must be assessed for the plausibility of signal
conditions, signal changes and their correct temporal
sequence.
EMC-compatible Installation
• Avoid antennae effects: Keep the supply
cables as short as possible; do not form
rings or loops with the cables!
• Mount good earth connections onto the
metal body of the brake.
• Lay control cables (total length <30 m)
separately from power cables or from
strongly pulsating supply cables!
Undertake a fast switch-off such as in the
wiring example with a DC-side contact K2.
(DC-side contact K2 between the output
terminal of the rectifier (supply module) and
the input terminal of the ROBA
®
-brake-
checker).
Time Delays
Functional Guidelines
Recovery Time
20 ms
Reset
>20 ms
Signal delay
approx. 40 ms
overexcitation
2
×
t
2
+ 200 ms
66