Additional Functions; Belt Failure Detection Without Sensor; Parameter Setting - Siemens sed2 Commissioning Manual

Par. no. Value Parameter function
P2200 1 Enable PID controller
P2201 60 Fixed PID setpoint
P2253 2224 PID setpoint
P2264 755.0 PID feedback
P2274 0 PID derivative action time
P2280 1.5
PID proportional band
P2285 20
PID integral action time
P2306 0 PID acting direction
P2390 20
Hibernation frequency
P2391 60
Hibernation timer
P2392 -5
Restart PID controller deviation
r2262 60
Filtered PID setpoint
r2272 64
PID scaled feedback
r2273 -1.2 PID error
r2294 70 PID output
8

Additional functions

8.1 Belt failure detection without sensor

Carry out quick commissioning and modify the parameters for normal operation, then proceed as follows:
Frequency /
torque curve

8.1.1 Parameter setting

Start with quick commissioning according to application example 1
Par. no. Value Parameter function
P0003 3 User access level
P2181 6 Belt failure detection mode Trip on high / low torque / speed
P2182 14 Hz Belt threshold 1
40/80
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Torque [Nm]
P2189
Upper torque threshold 3
P2190 unterer
Lower torque threshold 3
P2187
Upper torque threshold 2
P2188
Lower torque threshold 2
P2185
Upper torque threshold 1
P2186
Lower torque threshold 1
Threshold frequency 1
Function selection
Expert access
Sets a frequency threshold F1 for comparing actual torque to
torque the envelope for belt failure detection. The frequency
torque envelope is defined by 9 parameters - 3 are frequency
parameters (P2182 - P2184) and the other 6 define the low
and high torque limits (P2185 - P2190) for each frequency
Commissioning Guide
8 Additional functions
Function selection
Enable PID loop
Fixed setpoint as a percentage of sensor range
PID setpoint source
Sets PID feedback source to AI-1
Derivative action time
Proportional band
Integral action time
Direct acting loop
Hibernation setpoint [%]
Hibernation timer in seconds
Restart – PID error in %
Display actual setpoint in C
Display actual condenser temperature
Display actual PID error in %
Display actual VSD output in %
P2183
P2182
Threshold frequency 2
Threshold frequency 3
Frequency [Hz]
P2184
CM1G5192en
26.02.2003