LEESON Micro Series Compact Inverters User Manual

Page 68

41 AIN FLTR

(ANALOG INPUT FILTER)

This parameter adjusts the filter on the analog input terminals (TB-5A and TB-5B) to reduce the effect of

any electrical noise that may be present on the analog input signals. This filter works in both PID mode

and standard speed control mode . It should be set to the lowest value that yields acceptable performance, as

setting it too high may cause the drive to react too slowly to signal changes .

TB10A OUT

(TERMINAL TB-10A OUTPUT)

The analog output signal at TB-10A is proportional to the output frequency of the drive. This parameter

selects whether that signal is 0-10 VDC or 2-10 VDC . The 2-10 VDC signal can be converted to a 4-20

mA signal by connecting a resistor in series with the signal such that the total load resistance is 500 Ohms .

If set to NONE, the function is disabled .

NOTE:

This output cannot be used with “loop-powered” devices that derive power from a 4-20 mA signal.

@ TB10A

(TERMINAL TB-10A SCALING)

This parameter scales the analog output signal at TB-10A. This setting is the output frequency that is

indicated when the TB-10A output measures 10VDC .

Example:

The drive is part of a control system that requires a 0-5 VDC signal (rather than 0-10 VDC) that

is proportional to 0-60 Hz output frequency. The output signal is linear, so setting this parameter to 120

Hz would yield 10 VDC at 120 Hz, and 5 VDC at 60 Hz.

TB10B OUT

(TERMINAL TB-10B OUTPUT)

The analog output signal at TB-10B is proportional to the drive load . This parameter selects whether

that signal is 0-10 VDC or 2-10 VDC . The 2-10 VDC signal can be converted to a 4-20 mA signal by

connecting a resistor in series with the signal such that the total load resistance is 500 Ohms .

NOTE:

This output cannot be used with “loop-powered” devices that derive power from a 4-20 mA signal.

@ TB10B

(TERMINAL TB-10B SCALING)

This parameter scales the analog output signal at TB-10B. This setting is the load (in %) that is indicated

when the TB-10B output measures 10 VDC .

Example:

The drive is part of a control system that requires a 0-10 VDC signal to indicate 0-150% drive

load . If this parameter were set to 150%, the drive would output 10 VDC at 150% load (and about 6 .7

VDC at 100% load).

NOTE:

The output signal at TB-10B is affected by the setting of Parameter 34 - LOAD MLT .