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Need help?Do you have a question about the Watlow Electric 935A Series and is the answer not in the manual?
Explains the meaning of safety alert symbols used in the manual.
Provides contact information and details for obtaining technical support for the controller.
Invites users to send comments and suggestions regarding the manual for improvement.
Details the Series 935A as a temperature controller for industrial, commercial, and scientific applications.
Highlights key attributes such as ease of use, compact size, ruggedness, and reliability.
Describes specific functionalities like remote set point input and timer modes.
Illustrates the Series 935A's single input and dual output capabilities.
Lists the combinations of functions for Output 1 and Output 2.
Explains the procedure for viewing and modifying the set point value on the controller.
Details the function of the seven-segment display, SET key, arrow keys, and indicator LEDs.
Describes the process of powering up the controller and initiating its thermal control function.
Provides step-by-step instructions for adjusting the controller's set point value.
Lists common error codes displayed by the controller and their corresponding troubleshooting steps.
Explains the hierarchical structure of the controller's software menus.
Illustrates how to navigate through the controller's software menus and parameters.
Details the various tasks and actions available within the Operations Menu.
Explains how to approach PID tuning and how to access the PID Menu.
Describes the configurable parameters for heat and cool PID control loops.
Outlines the settings available in the Configuration Menu, including inputs, outputs, and alarms.
Details settings for alarms (hysteresis, latch, silencing) and timer functions (output, start, ready band, signal time).
Covers input failure modes and various lockout options for securing the controller.
Explains the three types of lockout options: Front Panel Lock, Set Point Lock, and Security Tag.
Provides essential details for configuring sensor inputs and output functions.
Guides users through wiring and setting up a remote set point for the controller.
Details the steps for implementing a front panel lockout feature using an external switch.
Explains how alarms work, including process vs. deviation alarms, and alarm types.
Explains the timer's requirements, setup locations, and available output actions after timing.
Illustrates a practical application of the countdown timer in a convection oven setup.
Details how to initiate and perform the automatic PID tuning process for the controller.
Provides instructions and considerations for manually adjusting PID parameters for optimal system performance.
Outlines the process and requirements for calibrating the controller's inputs.
Explains how to reset the controller's calibration settings back to the factory defaults.
Describes how to configure failure modes and common troubleshooting steps for input-related issues.
Provides the necessary dimensions for creating a panel cutout for controller installation.
Step-by-step guide for mounting the controller into a panel and ensuring a proper seal.
Instructions on how to safely remove and reattach the controller's terminal blocks.
Illustrates the wiring connections for power supply and sensor inputs.
Shows a complete system wiring example, including sensors, heater, and limit controls.
Provides definitions for technical terms used throughout the manual.
Explains the model number structure and available options for ordering the controller.
Lists detailed technical specifications including control modes, agency approvals, accuracy, and inputs/outputs.
States the product's compliance with relevant European Union directives and standards.
Details the prompts, ranges, and default settings for the Operations Menu.
Outlines the prompts, ranges, and default values for parameters within the PID Menu.
Details the prompts, ranges, and default values for parameters within the Configuration Menu.
Provides background information on Watlow Winona and its history in manufacturing control devices.
Details the 36-month warranty period, coverage, and limitations for the Series 935 controller.
Outlines the process for returning the product, including obtaining an RMA number.
Lists contact details for Watlow offices in Europe, Latin America, and Asia/Pacific.
General| Control Type | PID, ON/OFF |
|---|---|
| Output Types | Relay, SSR, Analog |
| Display | LED |
| Mounting Type | Panel Mount |
| Input Types | Thermocouple, RTD |
| Supply Voltage | 100-240 VAC |
| Communication | RS-485 Modbus |
| Operating Temperature | 0°C to 50°C |
| Enclosure Rating | NEMA 4X |
