Parker Gemini GV6K Series, Руководство по установке оборудования

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52
Gem6K Hardware Installation Guide
RS-485 Communications (COM1 Only)
Pin Out for 4-Wire RS-485 Communications:
Pin Description
1 Rx+ (also called RD B)
4 Tx+ (also called TD B)
5 GND (logic ground)
7 Rx- (also called RD A)
8 Tx- (also called TD A)
• Maximum RS-485 cable length is 4000 feet (1220 meters).
• To establish unique addresses for multi-drop units, use the ADDR command.
• Keep wires as short as possible. Termination resistors may be required on long
cable runs.
• Connect RS-485 cables before applying power to the drive.
(Reconnecting the cables with power applied may cause the drive to interpret
intermittent connections as RS-232 hardware handshake signals; this may result in
shutdown of the RS-485 interface. If this happens, reset the drive to re-enable the
RS-485 interface.)
• Recommended cable: Belden 9842.
• Refer to the diagram below for connection information.
R S - 2 3 2 / 4 8 5
c o n n e c t o r
L o n g c a b l e r u n s m a y
r e q u i r e t e r m i n a t i o n r e s i s t o r s
M a s t e r U n i t
T x +
T x -
R x +
R x -
1 2 0
Ω
1 2 0
Ω
S h i e l d
U n i t # 1
U n i t # 2
U n i t # 3
U n i t # 3 1
+ 5 V D C
G r o u n d
P i n 1 ( R x + )
P i n 7 ( R x - )
P i n 4 ( T x + )
P i n 8 ( T x - )
P i n 5 ( G N D )
P i n 1 ( R x + )
P i n 7 ( R x - )
P i n 4 ( T x + )
P i n 8 ( T x - )
P i n 5 ( G N D )
P i n 1 ( R x + )
P i n 7 ( R x - )
P i n 4 ( T x + )
P i n 8 ( T x - )
P i n 5 ( G N D )
P i n 1 ( R x + )
P i n 7 ( R x - )
P i n 4 ( T x + )
P i n 8 ( T x - )
P i n 5 ( G N D )
RS-485 Multi-drop Connections
RS-485 Multi-Drop (COM1 Only)
Up to 99 Gem6K drives may be multi-dropped. You must use the
RS-232/485
connector (COM1) for multi-drop connections. (See the previous drawing.)
The ADDR command allows you to establish up to 99 unique addresses. To use
the ADDR command, you must address each unit individually before it is con-
nected on the multi drop. For example, given that each product is shipped
configured with address zero, you could set up a 4-unit multi-drop with the
commands below, and then connect them in a multi drop: