CENTENT CN0165, Руководство по эксплуатации, Страница: 15 / 48

INSTALLATION
11
01 .
) 5 (
R
−
=
V
Equation 4 - External Opto-isolator resistor
For example, if a +12 volt supply is to be used:
Ω ≈ =
−
=
680 00 7
.01
) 5 (12
R
Place 680 ohm resistors between Terminal 8 and the Direction source and between
Terminal 9 and the Step Pulse source.
to direction source
to step pulse source
from power source
Figure 6 - External Opto-isolator resistors
IMPORTANT:
DO NOT
PUT A RESISTOR IN SERIES WITH THE +5 VDC TERMINAL .
CURRENT SET
The Current Set Input determines the magnitude of the motor phase currents. This is
done by connecting a
¼
watt resistor between terminals 11 & 12. Terminal 11 is the
Current Set Input and Terminal 12 is the ground reference.
Table 5, page
X
13
X
, lists resistors to the nearest 5% standard value, for both parallel (half
winding) and series (full winding) operation. An abbreviated table is printed on the case
of the CN0165 for user convenience. Use the parallel values for operating four lead
motors.
The resistor values in Table 5 and on the case of the CN0165 are derived by using the
following equation:
SET
SET
SET
I
I
R
−
=
10
) )( 47000 (
Where:
R
SET =
current set resistor
I
SET =
desired current.
Equation 5 - Current Set resistor