WEG CFW-09 User Manual page 211

CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
b) Diagram of the Load Detection Logic
Start
P361 = 1?
N > P362
Repeat
Detection
Ramp Hold
P364 >0
Cable OK
Th > P363
Calculate Im
Th = 0
Im < P366
N* = N* x P368
End
212
S
N = 0
S
To = 0
Repeat
Detection
1
S
S
Is > P365
S
Im > P367
S
Show
Overweight
To = Time in N = 0 rpm
Th = Ramp Hold Time
N* = Speed Reference
N = Real Speed
Figure 6.46 b) - Details of the operation of digital functions
To > 1 s
S S
Repeat
Detection
Slack Cable
Counter = 0
1
S
P364 > 0
S
Is > P365
S
S
S
Is = Output Current (P003)
Im = Average Current
Iq = Torque Current
Increase To
Cable OK
Show Slack
Cable
Th = Th-1