LEESON SM-Basic Series Sub-Micro Inverters (Obsolete) - Manual (Page 15)

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10.5 SPEED REFERENCE SELECTION
If a speed pot is to be used to control the drive speed, terminal TB-13A, 13B, or 13C (Parameter 10,
11, or 12) may be programmed as the input select for the speed pot. When that TB-13 terminal is then
closed to TB-11, the drive will follow the speed pot input.
If the speed pot is not selected on the terminal strip using TB-13A, 13B, or 13C, speed control will
default to STANDARD mode, which is governed by the setting of Parameter 05 - STANDARD
SPEED SOURCE. The STANDARD SPEED SOURCE can be the
I and J buttons on the front of
the drive, PRESET SPEED #1 (Parameter 31), or a speed pot.
PRESET SPEEDS
TB-13A can be programmed to select PRESET SPEED #1, TB-13B to select PRESET SPEED #2,
and TB-13C to select PRESET SPEED #3. There are a total of seven preset speeds, which are
activated by different combinations of contact closures between TB-13A, 13B, 13C and TB-11. Refer
to Parameters 31-37 in Section 15.0 - DESCRIPTION OF PARAMETERS.
JOG
TB-13B can be programmed to select either JOG FORWARD or JOG REVERSE. The Jog speed is
set by PRESET SPEED #2. Close TB-13B to TB-11 to JOG, and open the contact to STOP.
NOTE: If the drive is commanded to JOG while running, the drive will enter JOG mode and run at
PRESET SPEED #2. When the JOG command is removed, the drive will STOP.
MOTOR OPERATED POT (MOP) / FLOATING POINT CONTROL
TB-13B and TB-13C are required for this function, which controls the drive speed using normally
open contacts wired to the terminal strip. Program TB-13B for DECREASE FREQ, and program
TB-13C for INCREASE FREQ. Closing the contacts between the TB-13 terminals and TB-11 will
cause the speed setpoint to increase or decrease until the contact is opened. The INCREASE FREQ
function will only operate while the drive is running.
NOTE: If TB-13A, TB-13B, and TB-13C are all programmed to select speed references, and two or
three of the terminals are closed to TB-11, the higher terminal has priority and will override the
others. For example, if TB-13A is programmed to select a speed pot, and TB-13C is programmed to
select PRESET SPEED #3, closing both terminals to TB-11 will cause the drive to respond to PRESET
SPEED #3, because TB-13C overrides TB-13A.
WARNING!
When operating in JOG mode, the STOP signal and the AUXILIARY STOP function (see Parameters
10-12) WILL NOT stop the drive. To stop the drive, remove the JOG command.
JOG REVERSE will operate the drive in reverse rotation even if ROTATION DIRECTION (Parameter
17) is set to FORWARD ONLY.