Watlow Series F4P Temperature/Process Controller

Remote Setpoint: Set input 2 to "Remoto" and switch between local/remote setpoints in "P á gina Operaiones>Punto establecido remoto/local". The remote signal should match the input range (e.g. 4-20mA corresponds to 50-500 ℃).

Security permissions: Set permissions in "P á gina F á brica>Fijar bloq", such as "Contrast ñ a" for "P á gina Configuraci ó n", and set a 4-digit password to prevent unauthorized modifications.

3. Calibration and maintenance (ensuring accuracy)

(1) Input calibration (P á gina F á brica>Calibraci ó n>Caliblar entrada x)

Suitable for scenarios with large sensor reading deviations, requiring standard signal sources (such as precision signal generators, standard resistance boxes):

Key parameters for input type calibration steps

Thermocouple 1. Connect the standard thermocouple compensator (0 ℃ reference), input 0mV (corresponding to 0 ℃), select "0.00mV" in "Caliblar entrada 1", and press Right to store

2. Enter 50mV (corresponding to J-type thermocouple at approximately 500 ℃), select "50.00mV", and press Right to store

3. Connect the actual thermocouple and verify that the deviation between the reading and the standard value is ≤ ± 0.1%. Ensure that the compensator accuracy is ± 0.01mV. Preheat the controller for 20 minutes before calibration

RTD 1. Short circuit input terminal (0 Ω), select "Tierra", press Right to store

2. Connect to 15.00 Ω (corresponding to approximately -200 ℃ for Pt100), select "15.00 Ω", and press Right to store

3. Connect to 380.00 Ω (corresponding to approximately 800 ℃ for Pt100), select "380.00 Ω", and according to the Right storage standard, the accuracy of the resistance box should be ± 0.01 Ω, and the wire resistance should be ≤ 0.1 Ω

Process signal (4-20mA) 1. Input 4.000mA, select "4.000mA", press Right to store

2. Enter 20.000mA, select "20.000mA", press Right to store the signal source accuracy of ± 0.01mA, input impedance matching (100 Ω)

(2) Output calibration (P á gina F á brica>Calibraci ó n>Caliblar salida x)

Suitable for scenarios where there is a large deviation in output/retransmission accuracy, requiring a high-precision multimeter (3.5 bits or more):

Key parameters for output type calibration steps

Process output (4-20mA) 1. Connect a multimeter (in series), select "4.000mA" in "Caliblar salida 1A", adjust the multimeter to display 4.000mA with Up/Down, and press Right to store

2. Select "20.000mA", adjust it to 20.000mA, press Right to store the load resistance of 800 Ω (maximum), and ensure that the output is stable for 1 second before calibration

Process output (0-10V) 1. Connect a multimeter (in parallel), select "1.000V", adjust to 1.000V, and store

2. Select "10.000V" and adjust it to 10.000V. Store the load resistance of 1k Ω (minimum) to avoid no-load calibration

(3) Daily maintenance

Regular inspection (monthly):

Appearance: The panel is undamaged, the indicator lights are normal (Power green light is always on, Comm green light is flashing), and the wiring terminals are not loose or oxidized.

Function: Verify alarm triggering (such as simulating overheating, alarm output action), manual/automatic switching (output response normal after switching).

Annual maintenance:

Calibration: Re calibrate the input and output accuracy, restore the factory calibration value ("Restablecer cal. ent x"), and then re calibrate.

Cleaning: Wipe the panel with a dry cloth to remove terminal dust. Do not use corrosive cleaning agents such as alcohol and acetone.

Fault record: Record the fault code (such as "oPLP '" A-dLO "), occurrence time, and solution for subsequent troubleshooting.

Installation and Wiring Guide

1. Installation process (panel installation)

(1) Installation preparation

Tools: Phillips # 2 screwdriver, panel drilling tool (such as drill), torque wrench (0.5-0.6 Nm).

Environment: The installation location should be away from heat sources (such as heating pipes and frequency converters), avoid direct sunlight, have good ventilation, and meet the protection level requirements (NEMA 4X should be installed in a closed cabinet).

Size verification: The panel thickness is ≤ 9.5mm, and the opening size is 92-93mm (width x height) to ensure that the controller can be smoothly embedded.

(2) Installation steps

Panel perforation: Drill holes according to the size of 92-93mm, clean the burrs on the edges of the perforation, and avoid scratching the controller housing.

Embedded controller: Insert the controller from the front of the panel, ensuring that the sealing gasket (back) is attached to the panel without any offset.

Fixed bracket: Install the fixed bracket from the back of the panel, align the controller screw holes, and use a Phillips screwdriver to tighten 4 screws (torque 0.5 Nm). For NEMA 4X protection, ensure that the sealing gasket is compressed evenly with a gap of ≤ 0.508mm.

Check installation: Gently shake the controller without looseness; There are no protrusions/indentations on the front of the panel, and the display is normal.