Yaskawa E7B Drive Bypass System - Manual (Page 46)

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 44 of 46
Table 1 is also used to document parameters that have been factory set to typical values for fan and pump
applications. These parameters [b1-08, L4-05, L5-01, L5-03, o2-03 and o3-02] may be changed to meet the
needs of the specific application.
4. From the ADV/PRGM menu, press DATA/ENTER, go to parameter E1-01 and enter the nominal input
voltage that the Drive will receive in this specific application. The overall voltage classification of the Drive
cannot be changed by this parameter. However, the input voltage should be adjusted within the range avail-
able for the given voltage “class” of the Drive to match the input voltage level normally found on the jobsite.
For example, 480 VAC class Drives may be employed on nominal three phase voltage distribution systems
of: 380, 400, 415, 440, 460 or 480 VAC. The factory default values may need to be changed to meet the needs
of the application distribution voltage.
5. From parameter E1-01, use the ESC, and DATA/ENTER keys as necessary, to go to parameter E2-01
and enter the Motor Rated Current. Set this parameter to the motor rated Full Load Amps (FLA) shown on
the motor nameplate. This is essential for proper Drive operation and motor overload protection. [Note: Do
not include the “service factor” amps.]
6. Press the MENU key to return to the DRIVE menu and the same operational status LED configuration
described in step 2 above. The alpha/numeric display will show the speed command frequency.
To start the motor in Drive mode, press the HAND key. The DRIVE Run LEDs (red and green) and the
HAND LED (amber) will light and the Drive output will ramp up to “6 HZ.” Verify that motor rotation is
correct.
If the direction of motor rotation is wrong, press the OFF key and turn the Power OFF! Wait for the red
CHARGE LED (near the Drive power terminals) to go out. When it does, swap the wires for T1 & T2 on the
output terminals of the motor Overload Relay. Tighten the terminal lugs, reapply the power, press the HAND
key and re-check the rotation direction.
7. With correct motor rotation, press the MENU key, if necessary, to return to the DRIVE menu. Press DATA/
ENTER (as needed to get “F” flashing) then using the
and keys, manually run the Drive throughout
its entire speed range, while observing operation. If excessive vibration of the driven load is noted at specific
frequencies (speeds), the Jump Frequency function may be used to eliminate this vibration, by programming
d3-01 through d3-04. Press the OFF key.
8. Determine whether the remote speed command is a 0-10 VDC or a 4-20 mA signal. The positive side of the
signal should be connected to terminal TB3-3 of the E7B terminal strip. The “common” of the remote speed
command signal should be connected to terminal TB3-1 of the E7B. See the connection diagram on page 1 of
the E7B Bypass unit schematic E7B-10. [Note: The factory default is 4-20 mA, to change to 0 to 10 VDC
adjust parameter H3-08 to “0: 0-10VDC” and move E7B DIP switch S1-2, on the terminal PCB to the OFF
position (toward the unit rear).]
9. For the Auto mode, request a run command and speed command signal from the building automation system
to confirm remote (auto) operation.
10. Press the AUTO key, the DRIVE Run LEDs (red and green), the AUTO LED (green) and AUTO Run LED
(green) will light and the Drive output will ramp up to the Auto mode speed command. Observe if the remote
speed command can achieve the minimum and maximum speeds desired. If not, perform the following: - See
Chapter 5 of TM.E7B.01.
For 0-10 VDC input at Terminal TB3-3
1. With no input, adjust the Bias (H3-11 setting) until an output of “0.0 Hz” is obtained.
2. With full scale input, adjust the Gain (H3-10 setting) until an output of “60.0 Hz” (or other desired
maximum frequency) is obtained.
For 4-20 mA input at Terminal TB3-3
1. With 4 mA input, adjust Bias (H3-11 setting) until an output of “0.0 Hz” is obtained.
2. With 20 mA input, adjust Gain (H3-10 setting) until an output of “60.0 Hz” (or other desired
maximum frequency) is obtained.