NOTE:
The current parameter value appears below the
highlighted parameter .
To view the default parameter value, press the UP/
DOWN buttons simultaneously .
The most typical and necessary parameters to
change are parameter groups 99 Start-up data, 10
Start/Stop/Dir, 11 Reference Select, 20 Limits, 21
Start/Stop, 22 Accel/Decel, 30 Fault Functions and
98 & 53 Groups for Comms .
To restore the default factory settings, select the
application macro HVAC default .
Modes
The MD4 HVAC control panel has several different modes for
configuring, operating and diagnosing the drive. The modes are:
• Standard display mode – Shows drive status information
and operates the drive .
• Parameters mode – Edits parameter values individually .
• Changed parameters mode – Shows changed
parameters .
• Fault logger mode – Shows the drive fault history .
• Drive parameter backup mode – Stores or uploads the
parameters .
• Clock set mode – Sets the time and date for the drive .
• Alarm mode – Reporting mode triggered by drive alarms .
Standard Display Mode
Use the standard display mode to read information on the
drive’s status and to operate the drive . To reach the standard
display mode, press EXIT until the LCD display shows status
information as described below .
Status Information
Table 1: Status Information
Control Panel Display
Significance
Rotating arrow (clockwise or
counterclockwise)
• Drive is running and at setpoint
• Shaft direction is forward or reverse
Rotating dotted arrow blinking
Drive is running but not at setpoint
Stationary dotted arrow
Start command is present, but motor
is not running . E .g . start enable is
missing .
Top .
The top line of the LCD display shows the basic status
information of the drive .
•
Hand
– Indicates that the drive control is local, that is,
from the control panel .
•
Auto
– Indicates that the drive control is remote, such as
the basic I/O (X1) or fieldbus.
• – Indicates the drive and motor rotation status as
follows:
Upper Right
– shows the active reference .
Middle .
of the LCD display can be configured to display:
• One to three parameter values
—
The default display shows
parameters 0103 (OUTPUT
FREQ) in percentages,
0104 (CURRENT) in
amperes and 0120 (AI1) in
milliamperes .
—
Use parameters 3401, 3408, and 3415 to select the
parameters (from Group 01) to display . Entering
“parameter” 0100 results in no parameter displayed .
For example, if 3401 = 0100 and 3415 = 0100, then
only the parameter specified by 3408 appears in the
Control Panel display .
—
You can also scale each parameter in the display, for
example, to convert the motor speed to a display of
conveyor speed . Parameters 3402…3405 scale the
parameter specified by 3401, parameters 3409…3412
scale the parameter specified by 3408, etc.
• A bar meter rather than one of the parameter values .
—
Enable bar graph displays using parameters 3404,
3411 and 3418 .
Bottom .
The bottom of the LCD display shows:
•
Lower Corners
– show the functions currently assigned
to the two soft keys .
•
Lower Middle
– displays the current time (if configured to
show the time) .
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