User's Manual

Diagnostics
7.4 Diagnostics with the addressing and diagnostics unit
M200D AS-Interface Basic
Manual, 03/2009, A5E01668085-01
87
7.4 Diagnostics with the addressing and diagnostics unit
Diagnostics functions
The addressing and diagnostics unit (order no.: 3RK1904-2AB01) features a range of
diagnostics functions, such as:
● Detecting incorrect polarity or overload
● Measuring the AS-i supply voltage
● Detecting faults (with comments)
● Displaying I/O faults
For more information, refer to the operating instructions for the addressing and diagnostics
unit.
7.5 Troubleshooting
7.5.1 Response to faults
Description
In some cases, the device can be set in such a way that it responds to faults by either
issuing an alarm or by shutting down. Examples: "Response to asymmetry", "response to
temperature sensor overload".
The following table shows how the motor starter responds (depending on how it has been
parameterized):
Fault
Response 1 Response 2
Response: Alarm Shutdown
Message bit: Group alarm set Group fault set
LED display: DEVICE flashes yellow DEVICE lights up yellow
SF lights up red
Motor and brake: Not shut down Shut down
Note
With certain faults (e.g. "process mapping error" or device faults, such as "Contact block
defective"), however, the device always responds by shutting down.
This response cannot be changed.