ABB ACH550 User Manual page 18

16
Keypad Control Tests
Apply power to the E-Bypass unit. The display should show the operating status of
the drive. If the motor is a standard 208 V, 60 Hz motor connected to a 208 V drive or
a 480 V, 60 Hz motor connected to a 480 V drive, the default parameter settings
should be suitable for the initial tests described below. If the motor's rating is not
208 V or 480 V, 60 Hz, the MOTOR NOM VOLT and MOTOR NOM FREQ
parameters will need to be properly set before proceeding. Refer to the ACH550-UH
User's Manual and set the parameters as required.
The only macro that provides the proper configuration settings by default is the
E-Bypass macro. If any other macro is used, that macro should be selected after
completing the initial tests. When using any other macro the following parameter
values must be set or portions of the E-Bypass will not function properly:
• Parameter 1001 must be set to "DI1"
• Parameter 1002 must be set to "DI1"
• Parameter 1601 must be set to "DI2"
• Parameter 1401 (RO1) must be set to "Started"
• Parameter 1403 (RO3) must be set to "Fault (-1)"
Refer to the ACH550-UH User's Manual for additional information.
Test: Motor Disconnected from the ACH550 with E-Bypass
After setting the Start-up Data parameters, test and become familiar with the
operation of the ACH550 Drive with E-Bypass without the motor connected as
follows:
1. Disconnect and lock out power to the E-Bypass unit, wait at least five minutes after
disconnecting power.
2. Disconnect the motor from the E-Bypass unit.
3. Apply power to the E-Bypass unit by turning on the branch circuit disconnect device
and the bypass disconnect switch or circuit breaker.
4. The ACH550 Control Panel display should be illuminated. On the bypass keypad,
the Ready LED and Enable LED should be illuminated. If the Enable LED is not
illuminated, check to see that closed contacts or jumpers connect terminal X2:2 and
X2:3, on the bypass control board, to terminal X2:15.
5. Either the Drive Selected or Bypass Selected LED should be illuminated. Pressing
the Drive Select or Bypass Select key should switch the bypass back and forth
between the Drive mode and the Bypass mode as indicated by the LEDs above
each button. Check that the bypass keypad switches the system between modes.
Leave the system in the Bypass mode when proceeding to the next step.
6. Check to see that pressing the Auto key on the bypass keypad causes the Auto LED
to be illuminated, pressing the Hand key causes the Hand LED to be illuminated and
pressing the OFF key causes either the Hand or Auto LED to go off. Leave the Hand
and Auto LEDs off when proceeding to the next step.
7. For Steps 8 through 13 Parameter 9904 must be set to "Scalar: Freq". After
successful completion of Step 12, Parameter 9904 may be set to "Vector: Speed" if
Installation
E-Bypass Configurations for ACH550 Drives