Quick Start Guide ZESTA BENCHTOP CONTROLLER
© Rev. 0 May 2020 Zesta Engineering. All rights reserved. Page 1of 2
Equipped with Zesta ZEL-9100 Series Controller
The Zesta BENCHTOP CONTROLLER is a precision microprocessor-based, zero-cross firing, Single or Dual zone temperature control panel.
This control panel is designed to reach a pre-determined set point in the shortest time possible, with minimum overshoot.
The Benchtop Controller comes pre-programmed by Zesta Engineering depending on the feature selection, and a configuration parameter list is supplied with the unit.
Certain parameters, such as maximum operator set point, may need to be fine-tuned to meet your process requirements.
In the next sections you will find guidelines on accessing the Setup Page in order to reach the necessary parameters and make the adjustments.
Process Temperature Sensor Controller 1
Process Temperature Sensor Controller 2
CAUTION: USE A PROPER TEMPERATURE SENSOR TYPE. INCORRECT SENSOR TYPE CAN LEAD TO DAMAGE OR INJURY!
DO NOT CONNECT A HEATER LOAD EXCEEDING THE PANEL RATING! RESISTIVE LOADS ONLY!
Quick Start your process
To start your process using pre-programmed settings:
STEP 1: Off/On rocker switch must be on Power Off position.
STEP 2: Plug the Benchtop controller power cord plug to 120Vac, 50/60Hz, single-phase power source.
STEP 3: Turn On power switch located on the front of the control panel.
Temperature controller(s) will turn on displaying the Process temperature and Set point values.
STEP 4: Adjust the set point to required process temperature by pressing the Up or Down key.
The control panel will now function with default values.
To optimize the process response by auto-tuning the PID parameters of your Benchtop Controller:
STEP 1: Adjust your process set point using Up or Down keys to a temperature the tuning will be performed at.
STEP 2: Hold the Enter Key until the A-t is visible, then release key.
STEP 3: Press and hold the Enter Key for 5 seconds to initiate the tuning process.
The controller will indicate active tuning via AT indicator flashing.
The process will climb up and down around set-point calculating new PID values.
Once completed, the AT indicator will go off, and the new PID values will be stored automatically.
Adjusting the Benchtop Controller configuration
The Benchtop Controller is pre-set to degrees Celsius units, the minimum/maximum operator set point range of 0°C –500°C, and a deviation alarm of 10°C.
Selected models with Limit Controller are additionally programmed for a High Side Limit Set Point of 500°C.
If your process requires different parameter configuration, follow the steps below to perform the adjustments.
To switch between Celsius and Fahrenheit temperature units:
STEP 1: Enter the Setup Page by holding the Enter Key for 5 seconds until SET is visible.
NOTE: If HAnD, A-t or CALi is present, press and hold the Enter Key , until SET is visible.
STEP 2: Cycle the parameters using Enter Key until the UNIT (Celsius or Fahrenheit Display Units) is visible.
STEP 3: Using Up or Down keys, adjust the selection.
STEP 4: Return to Home Page by pressing the R Key .
To adjust minimum / maximum operator set point range:
STEP 1: Enter the Setup Page by holding the Enter Key for 5 seconds until SET is visible.
NOTE: If HAnD, A-t or CALi is present, press and hold the Enter Key , until SET is visible.
STEP 2: Cycle the parameters using Enter Key until the SP1L (Low Set Point Range) or SP1H (High Set Point Range) is visible.
STEP 3: Using Up or Down keys, adjust the selection.
STEP 4: Return to Home Page by pressing the R Key .
