Lenze EDS4900U-REG - Manual (Page 152)

Configuration
7-61
48XX/49XXSHB0399
7.4.4 Standstill excitation (field heating)
Purpose
With this function, a reduced field current can be set as field heating to avoid
condensation in the event of motor standstill.
4900Str048
-
C 1 8 8
F
C 0 8 3
C 2 3 1
C 1 8 7
C 3 1 6
C 3 1 8
&
0 t
C 3 1 7
I F a c t
I - c o n t r o l l e r
I F r
I F m i n
I F s e t
F i e l d c u r r e n t
s e t p o i n t
r e d u c e d
f i e l d c u r r e n t
A c t i v a t i o n
f i e l d c u r r e n t r e d u c t i o n
D e l a y
R F R
C t r l . i n h i b i t
FIG 7-21 Standstill excitation
Code Name Possible settings Code Name
Lenze Selection Info
C316* Reduced
field current
20 % 0 % I
Frated
{1 % I
Frated
} 100 % I
Frated
Reference: I
Frated
(C083)
With selection 0%, the ignition pulses of
the field controller are inhibited.
C317* Time delay
for the
reduced
field current
60 s 0.0 s {0.1 s} 10 s
10 s {1 s} 100 s
100 s {10 s} 3600 s
Time which is required to activate the
reduced field current after inhibiting the
controller.
C318* Activate
field current
reduction
0 -0- Field current reduction function is switched off
-1- Field current reduction function is switched on
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