ZESTA BENCHTOP CONTROLLER User manual

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.
CONNECTION GUIDE
INPUT
CONNECTOR
Process Temperature Sensor Controller 1
Input 1
Process Temperature Sensor Controller 2
(selected models only)
Input 2
Limit Temperature Sensor
(selected models only)
Input 2
OUTPUT
CONNECTOR
Heater Load Controller 1
Output 1
Heater Load Controller 2
(selected models only)
Output 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 .

Quick Start Guide ZESTA BENCHTOP CONTROLLER
© Rev. 0 May 2020 Zesta Engineering. All rights reserved. Page 2of 2
Equipped with Zesta ZEL-9100 Series Controller
To setup an alarm:
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 .
Identify and adjust the following parameters using Up or Down Keys:
Parameter Name
Parameter Indication
Description
Alarm Function
ALFN
Select between none, dwell timer, deviation alarm, process alarm
Alarm Operation Mode
ALMD
Select between normal, latching, hold or latching and hold
Alarm Hysteresis
ALHY
Set the alarm tolerance band before alarm condition may clear
Alarm Failure Transfer
ALFT
Select Alarm State when sensor failure is detected
NOTE: Refer to Zesta ZEL-9100 User Manual for more information.
STEP 3: Return to Home Page by pressing the R Key .
STEP 4: Press repeatedly Enter Key until SP3 (Alarm Set Point) is visible.
STEP 5: Adjust the Alarm Set Point using Up or Down Keys.
NOTE: The Alarm will be ON (Output OFF) with process value over. The Alarm will be OFF (Output ON) with process value under.
To adjust your ZESTA ZEL-L91 limit controller parameters (Selected Benchtop Controller models only):
The Zesta ZEL-L91 Limit controller is a safety device which helps in preventing a runaway condition by the means of de-energizing the load circuit.
The Benchtop Controller is programmed by default for High Side Limit, 0-500°C set point range and 100°C set point setting.
STEP 1: Ensure the LOCK indicator is OFF. If LOCK indicator is ON, hold the RESET Key for 4 seconds.
STEP 2: Enter the Setup Page by holding the Enter Key for 4 seconds until INPT is visible.
STEP 3: Cycle the parameters using Enter Key .
Identify and adjust the following parameters using Up or Down Keys:
Parameter Name
Parameter Indication
Description
Process Unit
UNIT
Selects which side or sides of the process value will be monitored.
Output 1 Function
OUT1
Select between High, Low, and High/Low limit control
Minimum High SP Range
HSP.L
Set the low end of the High Side limit set point range *
Maximum High SP Range
HSP.H
Set the high end of the High Side limit set point range *
Minimum Low SP Range
LSP.L
Set the high end of the Low Side limit set point range *
Maximum Low SP Range
LSP.H
Set the low end of the Low Side limit set point range *
* NOTE: Depending on the selected setting of Output 1 Function (OUT1), the High or Low Set Point parameter may not be displayed.
STEP 1: Return to Home Page by pressing the Reset Key .
STEP 2: Press repeatedly Enter Key until HSP1 (High Limit Set Point) or LSP1 (Low Limit Set Point) is visible.
STEP 3: Adjust the High or Low Limit Set Point using Up or Down Keys.
To clear triggered limit condition on your ZESTA ZEL-L91 limit controller (Selected Benchtop Controller models only):
STEP 4: Ensure the process is in a safe condition and the limit temperature sensor is connected.
NOTE: If limit sensor is disconnected during normal operation, limit condition will be triggered.
Sensor must be reconnected and the limit condition must be reset to resume operation.
STEP 5: Reset the limit controller latch by pressing the Reset Key .
For more information about each parameter function, please refer to
Zesta ZEL-9100 User Manual for Benchtop Controllers without Limit Controller
Zesta ZEL-9100 User Manual and Zesta ZEL-L91 User Manual for Benchtop Controllers with Limit Controller
Available at:
www.zesta.com