Service functions and error messages
Page 107
Product Manual
“Servo drive DIS-2 310/2 FB FS STO“
Version 4.0
10.1.6
Motor monitoring
Monitoring of the rotary encoder:
An error of the rotary encoder leads to the shut-down of the
power output stage. In the case of a resolver, the track signal is monitored, for example. In the
case of incremental encoders, the commutation signals are checked. Other "intelligent" encoders
have other error detection features.
Motor temperature measurement and monitoring:
The DIS-2 310/2 FB FS STO servo drive has
an analogue input for measuring and monitoring the motor temperature. Thanks to the analogue
signal detection method, also non-linear sensors are supported. The shut-down temperature can
be parameterised. Alternatively, the motor temperature can also be monitored by way of a normally
closed contact or PTC. In this case, however, the shut-down threshold cannot be parameterised.
I²t current monitoring with warning for the motor:
The DIS-2 310/2 FB FS STO servo drive has
an I²t monitoring system to limit the average power loss in the motor. Since the power loss in the
electronic power system and in the motor increases in a square manner with the current in the
worst case, the squared current value is taken as the measure for the power loss. When 80% of
the maximum integrated value is reached, a warning (parameterisable) will be issued. When 100%
is reached, the maximum current will be limited to the rated current.
Monitoring of the automatic motor identification process:
The system monitors whether the
automatic identification of the phase sequence, number of pairs of poles, and angle encoder offset
have been performed successfully.
10.1.7
Monitoring of the motion sequence
Following error:
The deviation between the position setpoint and the actual position is monitored.
Positioning range:
A running positioning process is monitored to see whether the positions are
within the adjustable positioning range.
Limit switches:
If both limit switches are active at the same time, an error will be generated.
Path program:
The path program is monitored in order to detect invalid commands.
10.1.8
Additional internal monitoring functions
Memory test/checksums:
The internal FLASH memory (program and data flash memory) is
monitored by way of a checksum test and the processor stack is also monitored.
Operating mode:
Depending on the operating mode, certain specific monitoring functions will be
activated.
Communication:
The communication via the serial interface and fieldbus is monitored.
