ABB ACS850-04 series, Hardware Manual

Page: 107 / 164

Installation
107
WARNING! As the inputs pictured above are not insulated according to IEC 60664,
the connection of the motor temperature sensor requires double or reinforced
insulation between motor live parts and the sensor. If the assembly does not fulfil the
requirement,
• the I/O board terminals must be protected against contact and must not be
connected to other equipment
or
• the temperature sensor must be isolated from the I/O terminals.
Drive-to-drive link (XD2D)
The drive-to-drive link is a daisy-chained RS-485 transmission line that allows basic
master/follower communication with one master drive and multiple followers.
Termination activation jumper T (see section Jumpers above) next to this terminal
block must be set to the ON position on the drives at the ends of the drive-to-drive
link. On intermediate drives, the jumper must be set to the OFF position.
Shielded twisted-pair cable (~100 ohm, for example PROFIBUS-compatible cable)
must be used for the wiring. For best immunity, high quality cable is recommended.
The cable should be kept as short as possible; the maximum length of the link is
100 meters (328 ft). Unnecessary loops and running the cable near power cables
(such as motor cables) must be avoided. The cable shields must to be grounded to
the control cable clamp plate on the drive as shown on page
102 .
The following diagram shows the wiring of the drive-to-drive link.
X5:D2D
...
1
T
J3
Termination ON
JCU
Drive 1
B
2
A 3
BG
N
D
X5:D2D
1
J3
Termination OFF
JCU
Drive 2
B
2
A 3
BG
N
D
T
X5:D2D
1
T
J3
Termination ON
JCU
Drive n
B
2
A 3
BG
N
D
3.3 nF
> 630 V AC 3.3 nF
> 630 V AC