Ro1, Ro2, Ro3: Relay Outputs; Xd24: Digital Interlock - ABB DCS880 series Hardware Manual

The drive-to-drive link is a daisy-chained RS-485 transmission line that allows basic master-follower
communication with one master and multiple followers. It is also used for the embedded fieldbus.
Set the termination switches J3 (see
(
terminated (
Use double shielded twisted-pair cable ( 100 , 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 complete length of the link is 50 meters. Avoid unnecessary loops and running the link near
power cables.
The following diagram shows the wiring of the drive-to-drive link.
J3 terminated

RO1, RO2, RO3: Relay outputs

NC 250 V / 30 V
AC
Maximum wire size 2.5 mm
COM
Varistor protected
NO
Parameter settings see

XD24: Digital interlock

DIL The digital interlock works like a normal digital input and has no special function in the DCS880. It can be
selected for example as the source for an emergency stop command or any other external event.
See the DCS880 Firmware Manual
Maximum wire size 2.5 mm
+24 V logic levels: low < 5 V
DC
R = 2 k
in
Hardware filter: 0.04 ms
Digital filter up to 8 ms
+24VD +24 V , 200 mA
DC
Total load power of these outputs is 4.8 W (200 mA, 24 V
Maximum wire size 2.5 mm
Parameter settings see
) at the two physical ends of the drive-to-drive link. All intermediate switches have to be set to not
).
J3
, 2 A
DC
2
DCS880 Firmware Manual Group 10 Standard DI, RO
for more information.
2
, high > 15 V
DC
2
DCS880 Firmware Manual Group 10 Standard DI, RO
3ADW000462R0101 DCS880 Hardware Manual e a
Jumpers and switches) next to terminal block XD2D to terminated
not terminated
DC
) minus the power taken by DIO1 and DIO2
DC
J3 terminated
SF_880_008_DCT_drive2drive_a.ai
Technical data
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