LEESON Micro Series Compact Inverters User Manual

Page 65

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29 MANUAL

(MANUAL)

This parameter selects the speed reference source when the drive is set for MANUAL speed control

(see parameter 28 - AUTO/MAN above). The speed reference options are KEYPAD (UP and DOWN

ARROW keys), or 0 - 10 VDC (from a speed pot wired to TB-2, 5A, and 6; or some other 0-10 VDC

source).

30 CONTROL

(START/STOP CONTROL)

If CONTROL is set to LOCAL, TB-1 is disabled and CANNOT be used as a STOP switch!

Incorrect use of TB-1 may result in damage to equipment and/or injury to personnel!

STOP (TB-1) and EXTERNAL FAULT (TB-13D) circuitry may be disabled if parameters are

reset to factory defaults! The drive must be reprogrammed after a RESET in order to insure

proper operation (see Parameter 65 - PROGRAM).

FAILURE TO DO SO MAY RESULT IN DAMAGE TO EQUIPMENT AND/OR INJURY

TO PERSONNEL!

This parameter is used to select the source of the start/stop command and direction control . The following

settings are available:

LOCAL

START/STOP and FORWARD/REVERSE commands from the keypad only.

REMOTE

START/STOP and FORWARD/REVERSE commands from the terminal strip only .

BOTH

LOCAL operation if TB-13A or TB-13C is programmed for LOCAL SELECT and a

contact closure is made from TB-13A or TB-13C to TB-2 . If the contact closure is not

made, the drive will be in REMOTE mode .

31 UNITS

(SPEED UNITS)

UNITS sets the units of the output speed or PID display on the keypad. The following choices are available:

Speed mode:

HERTZ, RPM, %HZ, /SEC, /MIN, /HR, GPH, NONE

PID mode:

%, PSI, FPM, CFM, GPM, IN, FT, /SEC, /MIN, /HR, F, C, MPM, GPH

NOTE:

If one of the “pid” units is selected, but the drive is in Manual (open-loop) speed control mode or

PID MODE is DISABLED, the displayed speed units will default to HERTZ. If one of the “speed” units is

selected, but PID MODE is ENABLED and the drive is in Auto mode, the displayed PID units will default

to % .

32 HZ MULT

(HERTZ MULTIPLIER)

The HZ MULTIPLIER is used to scale the output speed indication on the display . If UNITS is set

for HERTZ or % HZ, this parameter has no effect. Multiplying the output frequency by the HZ

MULTIPLIER will yield the desired speed value on the display .

Example:

The desired speed units is RPM with a standard 60 Hz, 1800 RPM motor. Set UNITS to RPM

and set HZ MULT to 30.00. This will result in a speed display of 1110 RPM for an output frequency of 37

Hz (37 Hz X 30 = 1110 RPM). Also, if there was a 100:1 gear reducer in the system, Parameter 33 - SPEED

DP below could be set to XX.XX to represent the output of the gear reducer (11.10 RPM in the example).

WARNING

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