Section 1 Operator Interface And Drive Control; Introduction; Normal Display - Danfoss VLT Series Service Manual

INTRODUCTION

VLT drives are designed with self-diagnostic circuitry to isolate
fault conditions and activate display messages which greatly
simplify troubleshooting and service. The operating status of
the drive is displayed in real-time. Virtually every command
given to the drive results in some indication on the local control
panel (LCP) display. Fault logs are maintained within the drive
for fault history.
The drive monitors supply and output voltages along with the
operational condition of the motor and load. When the drive
issues a warning or alarm, it cannot be assumed that the fault
lies within the drive itself. In fact, for most service calls, the
fault condition will be found outside of the drive. Most of the
warnings and alarms that the drive displays are generated by
response to faults outside of the drive. This service manual
provides techniques and test procedures to help isolate a fault
condition whether in the drive or elsewhere.
Familiarity with the information provided on the display is
important. Additional diagnostic data can be accessed easily
through the LCP.

Normal Display

In normal operational mode after start up, the top line of the
display (line 1) identifies the value displayed in line 2. The large
display (line 2) shows a value, in this case the drive output in
hertz. The setup number and direction of motor rotation is
also shown. The bottom line (line 4) is the status line. This line
displays the current operational status of the drive. The
illustration below indicates that the drive is running at 40 HZ
output.
FREQUENCY
Line 1
40.0Hz
Line 2
Line 3
RUNNING
Line 4
Pressing the up [+] or down [-] keys on the
keypad in this mode changes the data shown
in line 2. Thirty-one different diagnostic values
+
are identified (in line 1) and displayed (in line 2)
by scrolling through the display data. Setpoints,
–
feedback, operational hours, digital and analog
input status, relay output status, and many other
system functions are identified and their values
shown in real-time.
SECTION 1
OPERATOR INTERFACE AND DRIVE CONTROL
SETUP
1
DISPLAY
STATUS
CHANGE
DATA
On the VLT 4000/6000/8000 series drives, the [DISPLAY/
STATUS] key is identified as the [DISPLAY MODE] key and
operates in the same manner described.
Pressing the [DISPLAY/STATUS] key on the
DISPLAY
keypad toggles between the default setting and
STATUS
the programmable three meter display in line 1.
66%
Line 1
40.0Hz
RUNNING
To identify the 3 meters displayed in line 1, press
DISPLAY
and hold the [DISPLAY/STATUS] key. The identity
STATUS
of the meter is displayed while the key is
pressed.
REF%
40.0Hz
RUNNING
The values displayed in lines 1 and 2 can be programmed
from a list of options. See programming in the operator's
manual for details.
VLT is a registered Danfoss trademark
MENU
QUICK
MENU
CANCEL OK
+
–
82.1% 19.4A
SETUP
1
TORQ% CURR.A
SETUP
1
1-1