Rockwell Automation 1557 MEDIUM VOLTAGE AC DRIVE - Manual (Page 136)

7-12 OPERATOR INTERFACE TERMINAL PV-550 REV E
1557-UM050F-EN-P – June 2013
Changing Backlight Delay
The display of the terminal is only readable with the aid of a backlight. In order to preserve the life
of the lamp which provides this, the back lighting is automatically shut off after a duration of
inactivity on the keypad. The backlight is restored by pressing any key. The pressed key will not
have any other affect on the terminal when pressed with the backlight off.
To change the duration of the delay press the [F2] key. The current backlight delay will be shown
in reverse video. The value can be adjust from 0 to 60 minutes. A value of zero (0) will disable
the delay, keeping the light on indefinitely. Press the [cursor up] or [cursor down] keys to change
the value by a resolution of 1 minute. Press the [cursor left] and [cursor right] keys to change the
value by a resolution of 10 minutes. To abort the change, press the [backspace] key and the
setting will return to its original value. To accept the change press the [enter] key. The backlight
delay has been saved.
The setting may also be aborted by pressing any of the assigned function keys (other then F1).
The function associated with that key will be executed.
Changing Contrast
The contrast controls the horizontal angle to which the display may be viewed. To change the
contrast, press the [F3] key. The current value of the contrast will be shown in reverse video.
Press the [cursor up] or [cursor down] keys to change the value of the contrast. The screen will
change instantly to show the effect of the change. To abort the change, press the [backspace]
key and the setting will return to its original value. To accept the change press the [enter] key.
The contrast setting has been saved.
The setting may also be aborted by pressing any of the assigned function keys (other then F1).
The function associated with that key will be executed.
Setting Time
The clock setting controls the time stamp which the drive uses on the information contained on
the alarm summary screen. To change the time, press the [F5] key. The hours position of the
clock will be in reverse video. Press the [cursor up] or [cursor down] keys to change the value by
a resolution of 1 unit. Press the [cursor left] and [cursor right] keys to change the value by a
resolution of 10 units. To change the minutes press the [F5] key again and repeat the procedure.
Likewise to change the seconds press the [F5] key again. Each press of the [F5] key will highlight
the next position of the clock. The highlighted position may be modified via the cursor keys.
To abort the change, press the [backspace] key and the clock will return to its original time. To
accept the change press the [enter] key. The new clock setting has been recorded.
The setting may also be aborted by pressing any of the assigned function keys (other then F1 and
F5). The function associated with that key will be executed.