ABB ACH400 Series, Руководство по модернизации

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
Disconnect motor lead terminals U2, V2 and W2.

Disconnect the green/yellow ground lead at terminal PE.
Step 11: Disconnect customer installed control wiring.
 You will need to know the type and level of signal produced and
the scaling to system units (e.g. 4-20 mA for 0-2.5 In. of H
2
O).
Also note the terminals from which the wiring was disconnected.
This will help when reconnecting wires. For example, if the two
wires were connected to drive terminals 2 and 9, it indicates that
the sensor is a “loop powered” sensor taking its power from the
drive power supply. If however, the terminals used were terminals
2 and 3, it indicates a “non-loop powered” device.
! Warning! Miswiring can occur if you identify the control
wiring by its current terminal designation or the drive ID
(DI1, AI2, etc.)
Step 12: Disconnect factory installed control wiring.
 The multi-conductor cable that connects the drive to the bypass must be replaced. Verify the color
code / terminal number match below and then disconnect and discard the cable. The wires are
color coded (see table on next page) and do not require tagging. A new cable is provided for rein-
stallation in a later step.