890CS & 890CD Common Bus Units
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D Page
4-51
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9
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A
B
C
D
1
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7
E
8
9
1
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E
Powering-up the Units
1. Apply the 3-phase supply to the 890CS Common Bus Supply.
WARNING
The busbar system is LIVE when the 3-phase supply is provided to the 890CS unit, even prior to
enabling the bus, and even though the the 890CD unit(s) will show no activity.
2. Select LOCAL mode operation on the 890CS Common Bus Supply:
3. Press the
key on the 890CS Common Bus Supply to supply DC to the 890CD Common Bus
Drive(s) (the drive will not turn the motor).
♦ The red LEDs on the top of each drive unit will light to show DC is present at the busbars.
♦ The diagnostics on the 890CS keypad will indicate power is present - refer to Chapter 8: "The
Keypad" - 6511 - Common Bus Supply.
4. You MUST carry out an Autotune if you intend to use the drive in Sensorless Vector Fluxing Mode
or Closed-Loop Vector Mode - go to page 4-
52. If you are using the drive in Volts/Hz Mode (Open-
Loop Drive) an Autotune is not necessary - go to page 4-
57.
REMOTE
LOCAL
Hold the Stop key down until
the display spells
Release the key to display
the previous menu
for example,Local Setpoint
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