Maguire Products VBD-1000, Установка, эксплуатация и обслуживание

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Maguire Products, Inc.
Rev. March 5, 2018 – VBD-1000 Touchscreen
42
VBD
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- Vacuum Dryer
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Parameter Units
TIMES Are expressed as full seconds or full minutes.
PERCENTS are expressed in full percents.
TEMPERATURES are expressed in full degrees (Fahrenheit or Celsius).
TERM used to calculate a value.
3-letter
Acronym
Parameter title (units) – default parameter value
Parameter description
Blower Parameters
BDT
Blower Delay Time (Time in seconds) – 02002
The first two digits are the delay in seconds between powering the blower and
powering the heating hopper heater. The last two digits are the delay in seconds
between powering down the blower and powering down the heating hopper heater.
BDF VFD Frequency (Hz) – 00060
The frequency, in Hz, that the VFD will power the blower motor with. The blower
RPMs, as well as the airflow, are directly proportional to this frequency.
BHF
VFD High Limit (Hz) – 00060
The maximum VFD frequency, in Hz, that the blower may be set to from the Blower
Setup menu. The maximum settable value for this parameter is 000060.
BLF VFD Low Limit (Hz) – 00025
The minimum VFD frequency, in Hz, that the blower may be set to from the Blower
Setup menu. The minimum settable value for this parameter is 000025.
BZL VFD Zero Level (%) – 00045
The heating hopper level, expressed as a percentage, that triggers the VFD to
reduce speed to the BLA setting.
BLA VFD Level Adjustment (Hz) – 00025
The frequency, in Hz, that the blower will run at if the heating hopper level is at or
below the BZL level. This reduced blower speed eliminates popcorning when the
heating hopper material level is low.
BHT VFD Heat Throttle (%) – 00100
Percentage of adjustment to the heater's on-time at the point when the material has
finished exiting the heat hopper and the blower starts. A reduced heater on-time
percentage (from 100%) reduces the heat exposure to the new material entering
the heat hopper. Activated when the level sensor is below BZL (parameter). Setting
the first digit to a 1 overrides the percent adjustment and effectively turns off the
heater when material is below the BZL threshold.