WEG CFW-09 - Page 211

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