AMCI SD4840EK, Руководство пользователя

Страница: 88 / 104

I
NSTALLING THE
SD4840EK
SD4840EK User Manual
ADVANCED MICRO CONTROLS INC.
88
2.7 Encoder Wiring
2.7.1 Differential Wiring
The figure below shows how to wire a 5 Vdc differential encoder to the SD4840EK. There is no standard
when it comes to the color code of the encoder’s wires. A document named ‘encoder specs’, is available on
the AMCI website (www.amci.com) that lists the color codes of encoders used by AMCI. The direct link to
the document is:
https://www.amci.com/files/6714/5495/8474/encoder-specifications-rev.pdf
Because they are low power signals, cabling from the encoder to the SD4840EK should be done using a
twisted pair cable with an overall shield. The shield should be grounded at the end when the signal is gener-
ated, which is the encoder end. If this is not practical, the shield should be grounded to the same ground bus
as the SD4840EK.
As shown in the following diagram, the No Connection pins on the SD4840EK can be used to make the con-
nections between the encoder and its external power supply. This may eliminate the need for an external ter-
minal block when wiring the encoder to the unit.
Figure T2.7 Sample Differential Encoder Wiring
+Pwr
–Pwr
Shield
–Z
+Z
–B
+B
–A
+A
AMCI Encoder
(Optional on all AMCI
dual shaft stepper motors.)
RED
BLK
Shield
BLK
BLU
BLK
GRN
BLK
WHT
RED
BLK
BLK
BLU
BLK
GRN
BLK
WHT
–Z
+Z
–B
+B
–A
+A
+5Vdc
Power Supply
Belden 8304 or equ.
Suggested
SD4840EK
No Connection
– Z Encoder
+ B Encoder
– A Encoder
+ A Encoder
No Connection
+ Z Encoder
– B Encoder