Cable Types And Lengths; Grounding Of Protective Shields; Single Inverter Unit (Internal Power Supply); Dual-Channel Connection - ABB ACS880-107 Hardware Manual

Cable types and lengths


•
Double-shielded twisted-pair cable is recommended.
•
Maximum cable lengths:
•
30 m (100 ft) between activation switch [K] and inverter control unit
•
60 m (200 ft) between multiple inverter units
•
60 m (200 ft) between external power supply and first inverter unit
•
With frame n×R8i inverter units: 30 m (100 ft) between BCU control unit and last
inverter module in the chain.
Note: The voltage at the INx terminals of each inverter control unit (or frame R8i inverter
module) must be at least 17 V DC to be interpreted as "1".

Grounding of protective shields


•
Ground the shield in the cabling between the activation switch and the control unit at
the control unit.
•
Ground the shield in the cabling between two control units at one control unit only.
•
For frame R8i and multiples: Do not ground the shield in the cabling between BCU and
R8i module, or between R8i modules.

Single inverter unit (internal power supply)

Dual-channel connection

Inverter unit
Control unit
Control logic
OUT1
+24 V
SGND
IN1
IN2
UDC+
A
UDC–
The Safe torque off function 159
T1/U, T2/V, T3/W
K