Step 19: Reinstall The Customer's Control Wires; Step 0: Reinstall The Ach550 Cover And Control Panel - ABB ACH400 Series Retrofit Manual

Hvac drives. vertical electronic bypass to e-bypass, 1 - 25hp @ 208v, 1 - 50hp @ 480v (r1 ... r4 frame size drives)
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Tie wrap the cable and any other site-specific control wires to the top
of the bypass unit as shown. Use only the tie slot shown (lower of the
two). DO NOT wrap the cable to the top slot or cover interference
may result.

Step 19: Reinstall the customer's control wires.

!
Important: Be careful that no loose strands are created when inserting the wires into the terminal
block.
If the customer input signal is a speed reference, connect the wires to Analog Input 1, Terms. 2
and 3 and connect the shield to Term. 1.
If the customer input signal is PI Loop feedback, connect the wires to Analog Input 2, Terms. 5
and 6 and connect the shield to Term. 1.
!
Important: If the feedback device is "loop powered", make sure that the ground side of the feed-
back signal is also jumpered to the ground of the drive's 24V power supply at drive terminal 11.
If additional signals were removed from control relays or other outputs, reconnect them to the cor-
rect terminals per the ACH550 User manual included with the new drive.
Step 20: Reinstall the ACH550 cover and Control Panel.
Install the cover onto the ACH550.
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