Control units of the drive 345
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 fulfill 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.
DIIL input
The DIIL input is used for the connection of safety circuits. By default, the input is
parametrized to stop the unit when the input signal is lost.
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.
Enable bus termination on the supply / inverter modules at the ends of the drive-to-drive
link. On intermediate modules, disable bus termination. The settings are:
Use shielded twisted-pair cable (~100 ohm, for example, PROFIBUS-compatible cable)
for the wiring. For best immunity, high quality cable is recommended. Keep the cable as
short as possible; the maximum length of the link is 50 meters (164 ft). Avoid unnecessary
loops and running the cable near power cables (such as motor cables). Ground the cable
shields as described in section Connecting the control cables on page 136.
The following diagram shows the wiring of the drive-to-drive link.
Control unit type
Switch
designation
Settings
BCU-x2
(frame size R8i and multiples)
D2D.TERM
ON = Termination enabled.
OFF = Termination disabled.
1
2
3
4
B
A
BGND
Shield
XD2D
Termination OFF
1
2
3
4
B
A
BGND
Shield
XD2D
1
2
3
4
B
A
BGND
Shield
XD2D
Termination ONTermination ON
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