Electrical Installation
‑183‑
Table 8–24 Cable pin for the CAN communication between the AC drive and PLC
AC Drive PLC
Communica
tion Type
Signal Name
Function Communi
cation
Type
Signal Name
Function
CAN CANH
CAN signal
(positive)
CAN CANH
CAN signal
(positive)
CANL
CAN signal
(negative)
CANL
CAN signal
(negative)
CGND
Signal
reference
ground
CGND
Signal
reference
ground
‑
GND (CGND)
Enclosure
‑
GND (CGND)
Enclosure
CAN communication for connections of multiple AC drives in parallel
The following table specifies the cable pin for connections of multiple AC drives in
parallel in CAN communication networking.
Table 8–25 Cable pin for connections of multiple AC drives in parallel
AC Drive (Side A) AC Drive (Side B)
Communi
cation Type
Signal Name
Function Communi
cation
Type
Signal Name
Function
CAN CANH
CAN signal
(positive)
CAN CANH
CAN signal
(positive)
CANL
CAN signal
(negative)
CANL
CAN signal
(negative)
CGND
Signal
reference
ground
CGND
Signal
reference
ground
‑
GND (CGND)
Enclosure
‑
GND (CGND)
Enclosure
Networking
Use the daisy chain mode for the CAN bus, as shown in the following figure. Use
shielded twisted pair cables for the CAN bus, and use twisted pair cables for CANH
and CANL signal cables. Connect a 120 Ω termination resistor at each end of the bus
to prevent signal reflection. Connect the CAN signal reference ground of all the nodes
(up to 64 nodes) together.
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