Setting parameters
10/05 AWB8230-1541GB
128
Frequency offset (ADD)
In PNU A145 you can save a frequency offset and add it to or
subtract it from the specified reference frequency with PNU A146.
X Configure one of the digital inputs 1 to 5 as ADD (add
frequency) by entering the value 50 under the corresponding
PNU (C001 to C005).
The reference frequency source is selected with PNU A001. By
default the activation of digital input ADD adds the frequency
offset to the reference frequency. With PNU A145 = 01 the
frequency offset is subtracted.
Figure 135:Mathematical linking of reference frequency and offset
PNU Name RUN b031
= 10
Value Function DS
A145 Calculator –
offset
frequency
j j 0 – 400 Hz
Frequency offset for addition to or subtraction from reference
frequency. (a PNU C001 = 50: ADD)
0.0
A146 Calculator –
offset
frequency,
prefix
– j 00 Plus, adds the value of PNU A145 to the reference frequency
(a selection PNU A001, page 87)
00
01 Minus, subtracts the value of PNU A145 from the reference frequency
(a selection PNU A001, page 87)
A
RUN
PRG
Hz
PRG
ENTER
IO
POWER
ALARM
00
01
02
03
10
H O OI L
F-COM
Offset 0...400 Hz
F-COM
g ADD
50
C005
F001
C001
CAL
A145
321P2454
A001
00
01
A146
ADD
+
+/ñ
Modbus
h
When adding reference frequency and offset, the
maximum output frequency is limited by the value in
PNU A004 (a section “End frequency”, page 66).
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