YASKAWA E7N Technical Manual Download Page 86

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Start Up and Operation 4 - 7

Table 1 is also used to document parameters that have been factory set to typical values for fan and pump
applications. These parameters [

b1-07

b1-08

b8-01

L4-05

L5-01

L5-03

o1-02

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 available 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 now be 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

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 E7N terminal strip. The “common” of the remote speed command

signal should be connected to terminal

TB3-1

of the E7N. See the connection diagram on page 1 of the E7N Bypass

unit schematic E7N-00 (or Chapter 5 in this manual). [

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 E7N 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.

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 (