Lenze MCH Series Manual do Utilizador descarregar pdf (Página 65)

13435744_EDBMH01_v13 61

42 TB10A 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 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 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.

45 TB10B 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 0-120% drive load. If this parameter is set to 120%, the drive will

output 10 VDC at 120% load (and about 8.3 VDC at 100% load).

NOTE: The output signal at TB-10B is aected by the setting of Parameter 34 -

LOAD MULTIPLY.

47 TB13A INPUT

This parameter is used to select the function of terminal TB-13A. Closing TB-13A to

TB-2 activates the TB-13A input function. The following functions can be selected:

NONE Disables the TB-13A function.

0-10VDC Selects 0-10 VDC as the speed reference input (or setpoint source in

PID mode). The 0-10 VDC signal is wired to TB-5A (+) and TB-2 (-).

4-20 MA Selects 4-20 mA as the speed reference input (or setpoint source in

PID mode). The 4-20 mA signal is wired to TB-5B (+) and TB-2 (-).

PRESET #1 Selects PRESET #1 (Parameter 1) as the speed reference.

DEC FREQ Decrease frequency setpoint. Used with the MOP (motor operated

pot) function. Refer to Section 14.2.6 - SPEED REFERENCE

SELECTION.

REVERSE Selects Reverse motor rotation. This function can be used for cooling

tower de-icing.

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