ACH550 Installation, Operation and Maintenance Manual
59
ACH550 E-Clipse Bypass
If the ACH550 Drive and E-Clipse Bypass operate according to these steps, and you
have familiarized yourself with their operation, disconnect and lock out power to
prepare for the next test.
WARNING!
Wait at least five minutes after disconnecting power from the drive
before you attempt to service the drive. Bus capacitors in the intermediate DC circuit
must discharge before servicing the drive. Using a meter rated for 1000 VDC, check
for zero volts at:
• Terminals BRK+ to GND and BRK- to GND (frame size R1/R2)
• Terminals UC+ and UC- (frame size R3…R8).
If the drive does not operate according to these steps, refer to the ACH550-UH
User’s Manual.
3. Check jumpers and switches
The settings described in this section are factory set and, for most situations, do not
require adjustment. However, it is a good practice to review these settings to confirm
that they are appropriate for the configuration installed.
Jumper and switch locations
The figure below shows the locations of the SW1 DIP switch on the E-Clipse Bypass
control board. The function and setting of this switch is explained in the following
paragraph.
Serial Communications
Termination Resistors
SW1
ON=Terminated
OFF=Not Terminated
Factory
installed
jumpers
Hooked wire
race tie points
