TECHTOP TD350 - Page 332

TD350 Series VFD Extension cards
-327-
The following figure shows the external wiring of the PG card when it is used in combination with an
open collector encoder. A pull-up resistor is configured in the PG card.
+24V
PE
COM
S4
S3
S2
S1
HDIB
PW
HDIA
A1-
B1+
B1-
Z1+
Z1-
R
S
T
U
V
W
U
V
W
M3~
PG
AO+
AO-
BO+
BO-
ZO+
ZO-
pulse A
pulse B
A2+
A2-
B2+
B2-
REV run
FWD run
CNC
PLC
Upper computer
A1+
Fault reset
Z2+
Z2-
PGND
PWR
Z
B
A
PE
PG
card
PWR
PWR
PWR
Open collector
output
0V
0V
0V
VCC
0V
A+
A-
B+
B-
Z+
Z-
Using a shield cable
Open
collector
encoder
A
B
Z
PWR
PGND