Lenze MCH Series Manual do Utilizador descarregar pdf (Página 62)

58 13435744_EDBMH01_v13

31 UNITS (SPEED/PID UNITS)

This parameter sets the units of the output speed or the PID display on the keypad. The

following choices are available:

speed: HERTZ pid: CFM (cubic feet per minute)

speed: RPM (revolutions per minute) pid: GPM (gallons per minute)

speed: %HZ (percent Hertz) pid: IN (inches)

speed: /SEC (units per second) pid: FT (feet)

speed: /MIN (units per minute) pid: /SEC (units per second)

speed: /HR (units per hour) pid: /MIN (units per minute)

speed: GPH (gallons per hour) pid: /HR (units per hour)

speed: NONE (no units displayed) pid: F (degrees Fahrenheit)

pid: % (percent of PID feedback) pid: C (degrees Celsius)

pid: PSI (pounds per square inch) pid: MPM (meters per minute)

pid: FPM (feet per minute) pid: GPH (gallons per hour)

NOTE: If one of the “pid” units is selected, but the drive is in HAND (open-loop)

speed control mode or PID MODE is DISABLED, the displayed speed units

will default to HERTZ.

32 HZ MULTIPLIER

The HZ MULTIPLIER is used to scale the output speed indication on the display. This

parameter is only active when UNITS is set for speed: RPM, speed: /SEC, speed: /MIN,

speed: /HR or speed: GPH. Multiplying the output frequency by the HZ MULTIPLIER

will yield the desired speed value on the display.

Example: The desired speed unit is RPM with a standard 60 Hz, 1800 RPM motor.

Set UNITS to speed: RPM and set HZ MULTIPLIER to 30.00. This will

result in a display of 1110 RPM for an output frequency of 37 Hz (37 Hz

X 30 = 1110 RPM). Also, if there is a 100:1 gear reducer in the system,

Parameter 33 - UNITS DECIMAL could be set to XX.XX to represent the

output of the gear reducer (11.10 RPM in the example).

33 UNITS DECIMAL (UNITS DECIMAL POINT)

In “non-PID” mode, UNITS DECIMAL selects the decimal point location of the speed

display. UNITS DECIMAL has no eect if UNITS is set to speed: HERTZ or speed: %

HZ.

In PID mode, UNITS DECIMAL selects the decimal point location for the PID SETPOINT

and FEEDBACK displays, and FEEDBACK @ MIN and FEEDBACK @ MAX.

The possible settings are: XXXXX, XXX.X, XX.XX, X.XXX, and .XXXX. Refer to the

above example in Parameter 32 - HZ MULTIPLIER.

34 LOAD MULTIPLY

This parameter is used to scale the % LOAD display. If the drive output current rating is

higher than the motor full load current rating, the drive will not display 100% load when

the motor is at full load. Setting this parameter to the ratio (in %) of the drive output

current rating to the motor full load current rating will scale the load display to show

motor load instead of drive load. This will result in a display of 100% when the motor is

at full load.

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