Maguire Products VBD-1000, Installation Operation & Maintenance

Page: 46 / 85

Maguire Products, Inc.
Rev. March 5, 2018 – VBD-1000 Touchscreen
46
VBD
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- Vacuum Dryer
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DT1 Heat1 Derivative – Term – 00015
This parameter is used to make adjustments to the heating hopper heat output.
Changes to this parameter should not be made unless directed by a Maguire
Technician. The rate of change of the process error is calculated by determining
the slope of the error over time (i.e., its first derivative with respect to time) and
multiplying this rate of change by the derivative gain.
UT1 Heat1 Update Time – Time – 00415
This parameter has two parts. The first three digits is the amount of time, in
seconds, between PID updates if the heating hopper inlet temperature, T1a, is
ABOVE setpoint. The last two digits is the amount of time, in seconds, between
PID updates if the heating hopper inlet temperature, T1a, is BELOW setpoint.
OT1
Heat1 Over-Temp Alarm – Percent – 06006
The first three digits is the time in seconds by which the actual temperature must be
above the set-point temperature of the heating hopper heater by the value in
degrees represented in the 4
th
and 5
th
digits of this parameter before an over-temp
alarm condition occurs.
NH1
Heat Hopper No Heat Alarm – Seconds – 120
This is the maximum time limit, in seconds, after the heat cycle begins, during
which one of the following two conditions must be detected: Either the temperature
must climb 20 degrees, or the temperature must move at least 20 percent toward
the target temperature. If neither condition is met the “NO HEAT” alarm will sound.
Such an occurrence would signal a failure of either the heater or the blower. This
parameter protects the heater from burn out in the event the blower fails or airflow
is blocked.
SO1
Heat Hopper Set-Point Offset – degrees – 03002
Heating hopper set-point temperature offset. Used for heat control. Offset from the
target in degrees. First 3 digits are the number of seconds to hold the offset
setpoint temperature. 4
th
and 5
th
digits are the number of degrees below the target
setpoint.
MP1
Heat Hopper Maximum Percent – Percent – 00100
Limits the duty cycle of the heater.
MAX
Max Temp Set-Point (Temperature) – 00350
The maximum allowable temperature in whole degrees.
ESM Energy Savings Mode – temperature – 000125
When Energy Saver Mode is enabled, and the temperature of the air exiting the
heating hopper is at or above this level and the Energy Savings Time has elapsed,
trigger Energy Saver Mode.
EST Energy Savings Time – minutes – 00030
If Energy Savings Mode is enabled and Energy Savings Mode has been activated,
the Energy Saving Time is the time that will elapse before Energy Savings Mode is
reactivated to bring the temperature of the material back up.