ACH550 Installation, Operation and Maintenance Manual 55
ACH550 E-Clipse Bypass
• Parameter 1608 must be set to “Comm”
• Parameter 5303 must be set to “76.8 kb/s”
• Parameter 5304 must be set to “8 EVEN 1”
• Parameter 5305 must be set to “DCU PROFILE”
• Parameter 5310 must be set to “103”
• Parameter 5311 must be set to “104”
• Power must be cycled
Refer to the ACH550-UH User’s Manual for additional information.
Note: Run motor from drive before attempting bypass operation.
System check: motor connected to ACH550 with E-Clipse Bypass
After performing the control panel checks and setting the ACH550 Drive Start-up
Data parameters, check the operation of the ACH550 Drive with E-Clipse Bypass
with the motor connected as follows:
1. Disconnect and lock out power to the E-Clipse Bypass unit, wait at least five minutes
before disconnecting power.
2. Connect the motor to the output terminals.
CAUTION: If the Bypass Override (Override 2) input contact is closed, the motor will
start across the line as soon as power is applied.
If the Safety Interlock and Run Enable input contacts are closed and the Smoke
Control (Override 1) input contact is closed, the motor will start across the line as
soon as power is applied.
If the Start/Stop, Safety Interlock and Run Enable input contacts are closed and the
system is in the Bypass mode and in either Hand or Auto, the motor will start across
the line as soon as power is applied.
If the Start/Stop, Safety Interlock and Run Enable input contacts are closed and the
system is in the Drive mode with the drive in either Hand or Auto mode, the motor
will start on the drive as soon as power is applied.
In order to prevent the motor from starting, the system should be in the Drive mode
and the drive should be OFF when the power is disconnected at the end of the
previous series of control panel settings and checks.
In order to prevent the motor from running without disconnecting the motor, open the
Run Enable and Safety Interlock contacts on bypass control board terminals X2:2,
X2:3 and X2:4 before applying power. Set the bypass to Drive mode and the drive to
OFF.
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