ABB ACS550-01 User Manual

ACS550 User’s Manual 221
Technical Data
Ground Connections
For personnel safety, proper operation and to reduce electromagnetic emission/pick-
up, the drive and the motor must be grounded at the installation site.
• Conductors must be adequately sized as required by safety regulations.
• Power cable shields must be connected to the drive PE terminal in order to meet
safety regulations.
• Power cable shields are suitable for use as equipment grounding conductors only
when the shield conductors are adequately sized as required by safety
regulations.
• In multiple drive installations, do not connect drive terminals in series.
Unsymmetrically Grounded Networks
Warning! Do not attempt to install or remove EM1 or EM3 screws while power
is applied to the drive’s input terminals.
Unsymmetrically grounded networks are defined in the following table. In such
networks, the internal connection provided by the EM3 screw (on frame sizes
R1…R4 only) must be disconnected by removing EM3. If the grounding
configuration of the network is unknown, remove EM3. Note that:
• ACS550-01 drives are shipped with the screw installed.
249 3x150 218 3x185 237 4/0
284 3x185 257 3x240 264 250 MCM or 2 x 1
274 3x (3x50) 291 300 MCM or 2 x 1/0
285 2x (3x95) 319 350 MCM or 2 x 2/0
IEC NEC
Based on:
• EN 60204-1 and IEC 60364-5-2/2001
• PVC insulation
• 30 °C (86 °F) ambient temperature
• 70 °C (158 °F) surface temperature
• Cables with concentric copper shield
• Not more than nine cables laid on cable ladder
side by side.
Based on:
• NEC Table 310-16 for copper wires
• 90 °C (194 °F) wire insulation
• 40 °C (104 °F) ambient temperature
• Not more than three current-carrying
conductors in raceway or cable, or earth
(directly buried).
• Copper cables with concentric copper shield
Max
Load
Current
(A)
Cu Cable
(mm
2
)
Max
Load
Current
(A)
Al Cable
(mm
2
)
Max Load
Current
(A)
Cu Wire Size
(AWG/kcmil)

ABB ACS550-01 Specifications

General

Brand	ABB
Model	ACS550-01
Category	Controller
Language	English