56 ACH550 Installation, Operation and Maintenance Manual
ACH550 E-Clipse Bypass
3. Apply power to the E-Clipse Bypass unit. The ACH550 Control Panel display should
be illuminated. On the bypass control panel, both the display and Enabled LED
should be illuminated. If the Enabled LED is not illuminated solid green, check to see
that closed contacts or jumpers connect terminal X2:3 to X2:4 and X2:2 to X2:7 on
the bypass control board.
4. The Drive Selected LED should be illuminated. If not, press the Drive Select key to
switch to Drive mode. Leave the system in the Drive mode when proceeding to the
next step.
5. Press the Hand key on the ACH550 Control Panel. Press and hold the UP key until
the motor just starts rotating.
Note: If the ACH550 Control Panel displays an OVERCURRENT or EARTH FAULT,
disconnect and lock out power to the E-Clipse Bypass unit. Wait at least 5 minutes.
Disconnect the motor leads from the E-Clipse Bypass unit and Megger each motor
lead to ground to determine if the motor is good. Check the power leads from the
Drive / Bypass to the motor for damaged or improper wiring. If the ACH550 Control
Panel displays any other drive faults, correct the fault condition before proceeding to
the next step.
CAUTION: Check motor rotation direction as soon as the motor begins to move. If
motor does not rotate in the correct direction, shut down the drive, disconnect and
lock out power to the drive and wait five minutes. Swap any two motor output wires
(T1, T2, and T3). Incorrect motor rotation direction may cause equipment damage.
6. Increase the speed to 60 Hz or the highest safe operating speed.
7. Press the OFF key on the drive control panel. The motor should stop.
If the drive does not operate according to these steps, refer to the ACH550-UH
User’s Manual.
If the drive operates according to these steps, your ACH550 with E-Clipse Bypass is
ready to use with preset or modified macro settings.
Note: The settings for ALL external serial communication between the ACH550 with
E-Clipse Bypass and any Building Automation System are configured using the
E-Clipse Bypass operator panel. DO NOT attempt to configure the external serial
communication connection using the ACH550 operator panel!
The settings for internal communication between the ACH550 and the E-Clipse
Bypass are configured at the factory and require no adjustment.
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