Application Examples; User Interface For Industrial Conveyor Oven With Ac Drive - DART Controls DP4 CONTROL Serie Manual De Instrucciones

User Interface for Industrial Conveyor Oven with AC Drive

Description:
An industrial tunnel oven currently uses an AC invertor drive with an attached speedpot to control
the motor which drives its train. Because the process time for the oven is known, it is preferred
that the user be able to set the process time in minutes and seconds on a digital display. Using
a DP4, this is quite simple and requires a minimum amount of installation and training effort
to complete. In this example, a DP4 has been connected to the existing AC invertor drive and
a remote speed select switch which allows the user to select from one of two preprogrammed
time settings (2 or 4 minutes) or to enter a manual mode where the display of the unit can be
directly adjusted using the front panel's up and down arrow buttons. The desired display range
is from 90 seconds (1:30) to 600 seconds (10:00). Calibration and measurement from the
previously installed speed potentiometer has shown that a voltage output of 30% - 76% of the
applied reference voltage from the AC invertor will produce the desired time range.
Application Diagram:
A
Heat Source
Tunnel Oven
CONTROLS
Page Ite Valu
Neg Rev Fwd
m
6:30
DIGITAL POT
Dart DP4
Contol

Application Examples

Connect to
B
Coupling
Partner
Motor
Controller
Variable-Frequency
Tach
Alarm
ENTER
Oven Speed Select Switch
MANUAL
SPEED 1
AC Control
AC Gear Motor
Drive Train Specs:
17
SPEED 2
Coupling to
Chain Drive
1380 RPM at non-reduced
motor shaft equates to
6 minutes and 40 seconds
of tunnel time