Lenze MC3000 Series - Manual (Page 61)

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40 TB5 MAX (TERMINAL TB-5 INPUT)
This parameter selects the output frequency of the drive that will correspond to the
maximum analog speed reference input (10 VDC or 20 mA) . This parameter is used in
conjunction with Parameter 39 - TB5 MIN to define a speed range that corresponds to
the analog speed reference input (0 - 10 VDC or 4 - 20 mA) .
Example:
The drive is required to operate from 0 to 60 Hz in response to a 0-5 VDC
speed reference signal (rather than the “normal” 0-10 VDC) . Because TB5
MAX is based on a 0-10 VDC (or 4-20 mA) signal, the drive will operate at
half of the TB5 MAX value if it is given a 5 VDC signal . Therefore, setting
TB5 MAX to 120 Hz will cause the drive to run at 60 Hz when it is given a 5
VDC speed reference signal .
NOTE: The drive can be programmed for inverse operation so that as the speed
reference increases, the drive speed will decrease, and as the speed
reference decreases, the drive speed will increase . This is accomplished by
setting TB5 MIN to the desired maximum output frequency, and TB5 MAX
to the desired minimum output frequency .
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 .
42 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 circuit 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 .
43 @ 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 10 VDC .
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 .
44 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 .