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CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
P405
(1)
250 to 9999
Encoder PPR
[ 1024 ]
1 ppr
Sets the number of pulses per revolution (PPR) of the incremental
encoder, when P202 = 4 (Vector with Encoder).
P406
(1)
0 to 3
Motor Ventilation
[ 0 ]
Type
-
At the first inverter power up (refer to items 5.2, 5.3 and 5.3.1) or when
P202 is modified from 0, 1 or 2 (V/Hz) to 5 (VVW), 3 or 4 (Vector - refer
to item 5.3.2), from 5 to 3 or 4 and vice versa, the value set at P406
automatically changes the overload protection as follows:
This parameter
is shown on the
display(s) only when
P202 = 4 (Vector
Control with Encoder)
ATTENTION!
The option P406 = 2 may be used (refer to Use Conditions below)
when motor should be operated at low frequencies with rated torque,
without requiring forced ventilation, for the operation range 12:1,
i.e., 5 at 60 Hz/4.2 at 50 Hz according the rated motor frequency.
CONDITIONS FOR USING OPTION P406 = 2:
I. Sensorless Vector Mode (P202 = 3);
II. WEG motors series: Nema Premium Efficiency, Nema High Efficiency,
IEC Premium Efficiency, IEC TOP Premium Efficiency and Alto
Rendimento Plus.
When P406 = 3, the switching frequency is limited to 5 kHz.
Table 6.60 -
Type of motor ventilation
Table 6.61 -
Motor overload protection action
P406
Function
0
Self-ventilated
1
Forced Ventilation
2
Optimal Flux
3
Increased Protection
P406
P156
P157
P158
0
1.1 x P401
0.9 x P401 0.55 x P401
1
1.1 x P401
1.0 x P401
1.0 x P401
2
1.1 x P401
1.0 x P401
1.0 x P401
3
0.98 x P401 0.9 x P401 0.55 x P401
Range
[Factory Setting]
Parameter
Unit
Description / Notes