43
462
S t e p p i n g M o t o r
Motor selection for the INT-462H/IB462H will have the same recommended
specifications as found in
Section 1.6: Motor Requirements
of this document.
See the
Minimum Required Connections
figure in this section for a connection
diagram.
Op t o -C o u p l e r S u p p l y
The INT-462 features optically isolated logic inputs to prevent system noise from
being coupled onto control signals. These inputs may optionally be powered from a
separate ex5 VDC to +24 VDC regulated power supply.
If an external supply is not used, Jumper JP2
must
be re-positioned to connect
pins 2 & 3 to power the opto-couplers using the on-board +5 VDC. Note that
if this is done optical isolation of the logic inputs is defeated. See the
Isolated
Inputs
portion of this appendix for further details.
S e t t i n g t h e O u t p u t C u r r e n t
The INT-462 uses a 1mA current source to provide a reference level to the
current adjust pin (Pin 1) of the IB462H driver. To control the output curent a
resistor is placed between Pins 13 and 14 of the interface board. Connection of
this resistor is essential for the IB462H/INT-462 to operate. The recommended
resistor type is: 1/8W 1%.
Table 2.1.4 shows the standard 1% resistor values for each output current
setting. A connection diagram is shown in figure 2.1.3.
e
l
b
a
T
r
o
t
s
i
s
e
R
t
n
e
m
t
s
u
j
d
A
t
n
e
r
r
u
C
t
n
e
r
r
u
C
e
s
a
h
P
)
A
(
e
u
l
a
V
r
o
t
s
i
s
e
R
)
s
m
h
O
%
1
(
t
n
e
r
r
u
C
e
s
a
h
P
)
A
(
e
u
l
a
V
r
o
t
s
i
s
e
R
)
s
m
h
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%
1
(
1
.
0
9
4
1
.
1
9
4
5
2
.
0
0
0
1
2
.
1
4
0
6
3
.
0
0
5
1
3
.
1
9
4
6
4
.
0
0
0
2
4
.
1
8
9
6
5
.
0
9
4
2
5
.
1
0
5
7
6
.
0
1
0
3
6
.
1
6
0
8
7
.
0
8
4
3
7
.
1
5
4
8
8
.
0
2
0
4
8
.
1
9
0
9
9
.
0
3
5
4
9
.
1
3
5
9
0
.
1
9
9
4
0
.
2
0
0
0
1
Table 2.1.4: Current Adjust Resistor Values
NOTE:
The current adjustment resistor MUST be in
place or a fault condition will occur!
