REV. 07.17.2003
4
Table
4
: Recommended Input Current Limiting Resistor Values
s
r
o
t
s
i
s
e
R
g
n
i
t
i
m
i
L
t
n
e
r
r
u
C
t
u
p
n
I
d
e
t
a
l
o
s
I
y
l
p
p
u
S
o
t
p
O
)
C
D
V
+
(
e
u
l
a
V
r
o
t
s
i
s
e
R
)
%
5
s
m
h
O
(
e
u
l
a
V
r
o
t
s
i
s
e
R
)
%
1
s
m
h
O
(
5
-
-
0
1
0
8
6
1
8
6
2
1
0
0
0
1
0
0
0
1
5
1
0
0
3
1
0
0
3
1
4
2
0
0
7
2
0
7
6
2
A power supply in excess of +5 volts may be used, however a current
limiting resistor
MUST
be placed in series with the input to limit the input
forward current to the recommended 7 milliamps. At no time can the input
forward current exceed 15 milliamps or damage may occur to the drive.
I n t e r f a c e M e t h o d s
The isolated logic inputs may be interfaced to the user’s control system in a
variety of ways. In all cases the inputs are normally in a logic HIGH state when
left floating. For purposes of this manual we will show three interface methods:
1]
Switch Interface.
2]
Open Collector Interface.
3]
TTL Interface.
S w i t c h I n t e r f a c e
A switch connected between the input and the opto supply ground will sink the
input. If this method is used a SPST (Single-Pole, Single-Throw) switch works
well for enable and direction. A normally-open momentary switch works well
for reset. Figure 2 illustrates a SPST switch connected to the enable input.
Figure 2: IB Series “S” Version Switch Interface
Содержание IB S Series
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