Digi-Sense 3622571, 3622572, 3622573, 3622574 Instruction Manual

Power
Inlet
Grid
Support
Load Fuse
(x2)
Load
Outlet (x2)
Sensor
Input (x2)
ON/OFF
Main
Power
Switch
Digital
Control
Module (x2)
ON/OFF
Alarm
Switch
Alarm
Operation Manual
Instruction Notes for 3622571, 3622572, 3622573, 3622574
Figure 1 Figure 2
General Description
The control automatically sets the PID parameters through a "learning" sequence in the auto-tuning mode. PID parameters include proportional band, reset/integral and rate/derivative. User-friendly features include automatic LED indicators to aid in monitoring and setup, as well as dual LED displays for process temperature and set point indication. This control automatically stores all information in a non-volatile memory.
Control Features
1. On/Off power switch.
2. On/Off alarm switch.
3. 15-amp output.
4. Circuit protection (fuses)
5. Audible alarm.
3/10 1 Rev.0
Up/Down keys:
Adjust the setpoint in
the lower display
Upper Display:
Indicates the
process value.
Advance Key:
Advances through
parameter prompts.
Infinity key: Clears and silences alarms, press to back up one level, or press and hold for two seconds to return to the Operations Menu.
Lower Display:
Indicates the
setpoint value.
Figure 3. Digital Control Module Detail
How to Setup and Operate each Channel
First, connect the heater load and the sensor to the load and sensor receptacles on the front panel. Next, plug the control line cord into an appropriate 3-wire grounded power receptacle. Push the power switch to the "ON" position. Wait five seconds for the control unit to energize.
The control is shipped from the factory with the display reading in degrees C. If a display in degrees F is desirable, press the UP/DOWN arrow keys simultaneously for three seconds to access the Setup Page. Press the Advance key until the Celsius_Fahrenheit parameter [C-F] is shown in the lower display. Press the UP arrow key to change from C to F.
After changing the display, press the Infinity key to display the set point temperature and the process temperature (temperature at the sensor).
To begin the heating application, use the Up/Down arrow keys to enter the desired set point temperature. This is shown in the lower display. Press the Advance key to cycle through the Operations Page until the auto-tuning parameter [Aut] is shown in the lower display. Auto-tuning is recommended in most applications. Auto-tuning allows the control to set the parameters without those parameters being input by the user. It also minimizes the amount of temperature overshoot of the set point and decreases the time required for the process to stabilize.
After setting the auto-tuning parameter [Aut] to ON, press the Infinity key to display the set point and process temperatures. While the control is in the auto-tuning mode, the lower display alternately flashes the set point and the "Aut" prompt. When tuning is complete, the lower display indicates only the set point.
3/10 2 Rev.0
Range Type J:
-200°C to 1200°C
Range Type K:
-200°C to 1370°C
Range Type T:
-200°C to 400°C
Range Type RTD:
-200°C to 800°C
The auto-tuning function can be aborted by setting auto-tuning [Aut] to OFF or switching off power to the control. It is recommended that auto-tuning be used each time a process is being run. If the process is being duplicated, the
parameters learned in the initial setup are stored in the memory of the control and no repeat of auto-tuning is required. Auto-tuning feature allows quick and simple automatic control for the majority of heating applications. This control is
capable of performing other control functions and has a variety of features.
Control Sensor
Proper placement of the sensor can eliminate many problems in the total system. The probe should be placed so that it can detect any temperature change with little thermal lag. In a process that requires fairly constant heat output, the probe should be close to the heater. In processes where heat demand is variable, the probe should be close to the work area. Some experimenting with probe location can be tried to provide optimum results.
Specifications
Control Mode
- Microprocessor-based, single input, single output.
- PID parameters Proportional band: 1 to 999o F
Reset: 0.00 to 99.99 repeats per minute. Integral: 0.00 to 99.99 minutes per repeat. Rate or Derivative: 0.00 to 9.99 minutes.
Operator Interface
- Advance, Infinity, Up and Down keys and ON/OFF switch.
- Dual, four digit LED displays.
- Thermocouple receptacle or (RTD) and 3-wire load receptacle.
Input
- Type J, K , T thermocouple or (RTD): input grounded or ungrounded.
- Automatic cold junction compensation and break protection for sensor.
- Degrees F or degrees C display; user selectable (preset for degrees C)
Primary Output (Heating or Cooling)
- 7.5 Amp per channel, 120 Volts.
Accuracy
- Calibration accuracy: 0.1% of span.
- Temperature stability: 0.2 oF / oF rise in ambient maximum.
- Voltage stability: 0.01% of span / % of rated line voltage.
Power
- 50/60 Hz 5%
- Data retention upon power failure via nonvolatile memory.
Operating Environment
- 32 to 149 oF / 0 to 65 oC; 0 to 90% RH, non-condensing.
3/10 3 Rev.0
Loading...
+ 7 hidden pages