Additional information on the connections
￭
Power supply for the control unit (XPOW)
Refer to the control unit connector data for the current and voltage ratings of the
power supply.
Connect an additional external power supply to the free +24 V and GND terminals of
the XPOW terminal block if:
• the control unit must be kept operational during input power breaks, for example,
because of continuous fieldbus communication
• immediate restart is necessary after a power break (that is, no control unit
power-up delay is permitted).
￭
Digital interlock (DIIL)
Digital interlock input (DIIL) terminal is originally intended for interlock signals that
stop the drive/unit when necessary. In the ACS880 primary control program, DIIL
terminal is the source for the run enable signal by default. The inverter unit or drive
cannot start, or it stops when there is no DIIL signal. In other control programs (and
units), the default use of the DIIL terminal varies. Refer to firmware manual for more
information.
Note: This input is not SIL or PL classified.
￭
The XD2D connector
The XD2D connector has an RS-485 connection that can be used for
• basic master/follower communication with one master drive/unit and multiple
followers
• fieldbus control through the embedded fieldbus interface (EFB)
• drive-to-drive (D2D) communication implemented by application programming.
Refer to the firmware manual for the availability of these features and related
parameter settings.
Terminate the bus on the units at the ends of the drive-to-drive link. Disable bus
termination on the intermediate units.
Use a shielded twisted-pair cable for data, and another pair or a wire for signal ground
(nominal impedance 100…165 ohm, for example Belden 9842). For the best immunity,
use high quality cable. Keep the cable as short as possible. Avoid unnecessary loops
and parallel runs near power cables such as motor cables.
Technical data 33
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