Baumuller b maXX BM3400 Series - System Monitoring and Error Reporting

Safety relay (option) 7.7T
7.6 Safety relay (option)
The function of the safety relay is based on the closed-circuit principle. The safety function „Safe stop“is
active, as long as there is no voltage at the input terminals (X102-3/4). Consequently the operation of the
safety function is also guaranteed, if there is power failure. In order to deactivate the function „Safe stop“
there must be a voltage of 24V at the terminals (X102-3/4), which are concerned.
For the external error monitoring of the safety relay, the instantaneous control state can be interrogated at
its positively driven status signal contacts (X102:1/2). If there is no voltage at the safety relay (X102-3/4), i.e.
during the „Safe stop“, then the status signal contacts are closed (NC c ontact). Also a cable breakage therefore
can be recognized a s an error.
If the voltage at the input terminals of the relay ( X102:3/4) is switched off, the converter either generates the
error message „Power unit warning 20: undervoltage safety relay“ or the message „Power unit error 87: error
safety relay“. At inhibited pulse enable a warning message is generated and at pulse enable a fault message or
error message is generated. A commissioning or enable of the drive is only then possible, if there is no error
present. This error memory can e.g. b e reset via the digital input X26/6. For this, the input must accordingly
be configured. The switch-on pulse length must be at least 5ms.
7.7 Monitorings
During operation there is a steady monitoring for deviations from the normal conditions, at w hich warnings
or error messages are generated if they occur.
Warning If the controller detects an operating status, where an error state preceded,
but which has not reached the error limit yet, an acc ording warning text is
shown in WinBASS II. The device also shows the most important warning
„Current limit reached“ via the LED H1 (see «Current limit (H1)» on page
116).
Error message If the controller detects the exceeding of error limits, a n according error text
in WinBASS II or the error cod e via the 7-segment-display of the device is
shown. Errors, which result in a shut down of the drive, are signaled via a F,
other erros are signaled by a blinking decimal point. The error information
begins with a F followed by the error number according to the listing under
«Trouble shooting» from page 127 .
Instrution Manual b maXX ® BM3400 117
Doument No.: 5.07013.03 from 206