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19.
ADJUSTING "BIAS" AND "GAIN" OF FREQUENCY SETTING SIGNALS
(8) Press
me
[READ] key
The w m n t
s e w
I s
a s p l a w n m e
60
RO
display
unit.
I
(9)
Input '50" using
me
numenc keys
Apply a
5
V vdtage
display unit.
value.
'50' appears
in me
5 3
1
(10)
Press
me
[WRITE) key
The
newly
set value
SOAW
is stored to
the
m e w
I
: ; % % I y
PW
*
If input voltage difference for bias and gain is less than 5%, drive will not accept the values.
Note: Adjust bias and gain by applying 5V (IOV) across terminals 2 and 5 (frequency setting
input terminals).
While voltage is applied across these terminals, frequency is output corresponding to
the input voltage. For example, if the bias and gain are set as explained, output fre-
quency is obtained as shown by the graph (solid line) below if 1V is applied across ter-
minals 2 and 5. When current input is used to control the output frequency, a similar
setting should be made using Pr.904 and Pr.905.
*'
*
To adjust output frequency to OHz in response the input of
1
V, change the bias using
the same procedure.
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