Monitoring Functions; Faults And Alarms - Siemens SINAMICS S120 System Manual

Drive functions

5.13 Monitoring functions

5.13 Monitoring functions
5.13.1

Faults and alarms

You can change the numbers and types of faults and alarms using the following parameters:
● p2118: Change message type message number
● p2119: Change message type type
● r0949: Fault value
Important alarms for the HLA module
● F07900: Motor blocked / speed controller at its limit
– p2175: Motor blocked velocity threshold
– p2177: Motor blocked delay time
● F07751: Drive: Valve does not respond
– p0232: Valve monitoring time
● F07752: Drive: Piston position not possible
The piston was calibrated (p0476 ≠ 0) and the absolute position is available
(p1407.7 = 1). However, the piston position (r0094) is not plausible (negative or higher
than the stroke in p0313).
● F07753: Drive: No valid pressure actual value available
The function "Force controller", "Forced limiting" or "Stiction compensation" is activated
(p1400), and at least one of the two pressure sensors required for pressure actual value
A or B is not supplying a valid value. The two pressure actual values A and B are
required for the functions listed above.
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A message is output if the manipulated voltage at the D/A converter is at the limit for a
parameterizable time and, at the same time, the actual velocity is lower than a
parameterizable threshold (p2175).
The valve spool position is signaled back. The message "Valve spool is not
responding" is output if the valve spool position exits the tolerance field of 10% of
maximum stroke around the setpoint for longer than the time set in p0232 when the
power is enabled. This fault cannot be initiated if a feedback signal has not been
configured for the valve spool position (p0218).
System Manual, 04/2015, 6SL3097-4BA00-0BP1
Hydraulic Drive