PowerTec Digimax, Инструкция по установке и эксплуатации

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Page 10 © copyright 1992-1996 by Powertec Industrial Motors
The UP and DN buttons are used to make changes in the speed or ratio while the
DIGIMAX DIGIMAX DIGIMAX DIGIMAX DIGIMAX
®
is in operation. There are two control inputs on the back terminals which
accomplish the same functions as the front panel buttons.
There are two modes of response to the UP and DN buttons (see page 31):
1. A "shaft position change" (JUMP) function. When the UP or DN button is pressed,
the output frequency temporarily increases or decreases (depending which one is pressed)
and returns to the SETPOINT when the button is released. The effect of this on the Brushless
motor control is to move the motor shaft forward or backward in its rotation by an amount
proportional to the extra pulses. The amount of change is determined by parameters.
2. A "motor operated potentiometer" (MOP) function. When the UP or DN button is
pressed, speed will continue to increase or decrease as long as the appropriate button is
pressed. When the button is released, speed will remain at the value which exists when the
button is released. This emulates the action of the traditional motor operated potentiometer.
The UP and DN buttons are also used during parameter entry (see page 13).
The CMD/ACT button toggles the DIGIMAX DIGIMAX DIGIMAX DIGIMAX DIGIMAX
®
between displaying the speed (or ratio)
COMMAND value and the ACTUAL speed (or a derivative thereof). In ACTUAL mode (the
display is bright) the microprocessor displays the speed information returned by the motor.
In COMMAND mode (the display is dimmed) the display is the current SETPOINT (a speed
command in MASTER mode and a ratio command in SLAVE mode). In SLAVE mode a
decimal point appears after the first digit to show how many numbers to enter (see page 34).
The PGM/CLR key is used to enter and leave the parameter table in the SETUP mode.
It must be pressed first, followed by a security code and then the ENTER button to access
the parameters. When the PGM/CLR key is pressed, the display will blank and the numbers
of the security code, as they are entered, will be acknowledged by a dash for each number
pressed. After the ENTER button is pressed, if the code is correct, the display will show the
parameter which was displayed when the parameters were last accessed, or parameter #1
if this is the first access since the last power-up. The PGM/CLR key must be pressed to exit
the SETUP mode. If the access code is incorrect, the display returns to the mode it was in
before the PGM/CLR key was depressed.
The PGM/CLR key may also be used as a CLEAR function during value entry.
The ALT key is used for quick access to command functions which are assigned to the
number and command keys as ALTernate functions. These are functions which may not be
used as often as the dedicated keys, but to which quick access is desired. To use the
alternate functions, it is necessary to press the ALT key (the display will go blank), and then
the key with the desired function printed above it. In some cases, additional actions may be
necessary.
UID
The UID function displays the Unit ID number (param #17) when the ALT key is
pressed, followed by the "0" key. After 10 seconds, the display returns to its previous state.
COMSIM
COMSIM means COMmunications SIMulator. The COMSIM function sends
out a continuous string of "A" characters (hex 41) on the RS-422 port for 10 seconds. This
function is used for testing. It is accessed by pressing the ALT key followed by the "1" key.
SFWVER
To accommodate changes in function of the DIGIMAX
®
, the software in the
EEPROM may be changed. Sometimes it is necessary to refer to the specific software in the
unit. Pressing ALT followed by the "2" key makes the version date appear in the display. The
format of the date is a five digit number. The first two numbers are the year and the last three
numbers are the day of the year. For instance, April 10th is the 100th day of a non-leap year.