Watlow Power Series microprocessor based SCR power controller

Factory Page: Calibration, Data Backup, Lock Menu, Path: Settings Page, Long Press ±+¬+ ®  Press the key for 2 seconds, and the next screen will display "FCty" (password required).

Core menu: [dAta] (Data Backup/Recovery), [` Loc] (Menu Lock), [InFo] (Device Information), [diAg] (Diagnosis), [In1/2/3] (Input Calibration).

（2） Core parameter configuration steps

1. Control algorithm configuration (taking phase angle control as an example)

Enter the settings page: Press and hold the ±+¬ keys for 2 seconds in the display loop, and the next screen will display "SEt".

Select the [alpha] menu: Press the Ó/Î keys until "[alpha]" appears on the upper screen and "[` set]" appears on the lower screen.

Select phase angle control: Press ®  Switch the key to the [` Off] parameter, press the Ó key to change the value to [PH2t], and press the ± key to confirm (controller restart).

Configure soft start: Enter the [Ctrl] menu and press ®  Switch the key to the [Soft] parameter and set it to 10 seconds (to avoid startup shock).

Configure current limit: Enter the [Opt1] menu and press ®  Switch the key to the [Lili] parameter, set it to "[` ` On]", and then switch to the [ClA] parameter, set it to 110% of the rated load current (such as 110A for a 100A load).

2. Alarm configuration (taking heater open circuit alarm as an example)

Enter the [arr] menu: Press the Ó key on the settings page until "[arr]" appears on the upper screen and "[` set]" appears on the lower screen.

Turn off global alarm: Press ®  Switch the key to the [glbl] parameter and set it to "[` Off]" (allows separate configuration).

Configure open circuit alarm: press ®  Switch the key to the [Open] parameter and set it to "[LaT]" (locked mode, needs to be manually cleared).

Configure alarm relay: press ®  Switch the key to the [a | lgc] parameter and set it to "[al ` O]" (when the relay is powered off during an alarm, it is safer).

Confirm configuration: Press the ± key to return to the display loop, and check the relay status and indicator lights when triggering an alarm.

3. Communication configuration (Modbus RTU)

Enter the [Om] menu: Press the Ó key on the settings page until "[Om]" appears on the upper screen and "[` set]" appears on the lower screen.

Set device address: Press ®  Switch the key to the [addr] parameter and set it to 1 (to avoid conflicts with other devices).

Set baud rate: Press ®  Switch the key to the [baUd] parameter and set it to 9600 (consistent with the main device).

Enable watchdog: Press ®  Switch the key to the [Wd] parameter, set it to "[` ` On]", and then switch to the [seC] parameter, set it to 30 seconds (timeout without communication triggers an alarm).

Test communication: Read register 150 (input current) through Modbus master device (such as PLC) and confirm that the data is normal.

（3） Calibration and Data Maintenance

1. Analog input calibration (taking 4-20mA input as an example)

Enter the factory page: Long press ±+¬ in the settings page+ ®  Press the key for 2 seconds, enter the password (contact Watlow to obtain it), and the bottom screen will display "FCty".

Enter the [In1] menu: Press the Ó key until "[In1]" appears on the upper screen and "[FctY]" appears on the lower screen.

Calibration low point: Input a 4.00mA standard signal to the controller and press ®  Switch to the [nna_] parameter and adjust the value to 4.00mA.

Calibration high point: Input a 20.00mA standard signal to the controller and press ®  Switch to the [nna -] parameter and adjust the value to 20.00mA.

Save Calibration: Press ®  Switch to the [CLA] parameter and set it to "[` req]". After 5 seconds, display "[idle]" to indicate calibration is complete.

2. Data backup and recovery

Backup configuration:

Enter the [dAta] menu: Press the Ó key on the factory page until "[dAta]" appears on the upper screen and "[FctY]" appears on the lower screen.

Select backup range: Press ®  Switch the key to the [BAUP] parameter, set it to "[all]" (backup all parameters) or "[2n1]" (backup area 1 only).

Perform backup: Press the ± key to confirm, and the display '[idle]' indicates that the backup is complete (stored in the backup EEPROM).

Restore configuration:

Enter the [dAta] menu and press ®  Switch to the [rest] parameter and set it to the same range as during backup (such as "[` all]").

Perform recovery: Press the ± key to confirm, and after the controller restarts, the parameters will be restored to the backup values (without overwriting the calibration parameters).

Troubleshooting and Maintenance

（1） Common faults and solutions

Possible causes of fault phenomena (sorted by priority), troubleshooting steps refer to document paragraphs

No display, no output. 1. The power supply is not connected or the voltage is abnormal

2. The main fuse is blown

3. Internal power module failure 1. Measure the voltage of the power terminal (should comply with 24-600V AC)