Allen Bradley 1336 PLUS Inverter Practical Guide

2. Electric Potentiometer (MOP)

Adjust the frequency setting through the digital input (Dig Pot Up/Down) of TB3, similar to a motor operator. Select the corresponding [Input Mode] (such as Mode 5, 9, 10, 15). [MOP Increment] (P22) Set the frequency change rate per second. Enabling [Save MOP Ref] (P230) can save the last given value in case of power failure.

3. Acceleration and deceleration of S-curve

Setting [S Curve Enable] (P57) to Enabled and adjusting [S Curve Time] (P56) can make the acceleration and deceleration start and end sections smoother and reduce mechanical impact. When [S Curve Time] ≥ acceleration/deceleration time, the total time becomes twice the original acceleration/deceleration time.

4. Example of Process PID Control

Assuming the need to control pipeline pressure: the pressure transmitter outputs 4-20mA and is connected to TB2-4/6, with the pressure setting value given by HIM. The configuration is as follows:

[Speed Control] = Process PI

[PI Ref Select]=Adapter 1 (HIM setting)

[PI Fdbk Select] = 4-20 mA

[PI Config] Configure based on positive/negative effects

Adjust [KP Process] and [KI Process] to make the response stable

Maintenance and spare parts

Regular inspection: Check the terminal fastening, radiator cleanliness, and fan operating noise at least once a year.

Insulation test: Only conduct a 500V megohmmeter test on the main circuit terminals (R, S, T, U, V, W, PE), and the insulation resistance should be greater than 1M Ω. It is strictly prohibited to conduct voltage withstand tests on the control circuit.

Spare parts information: The spare parts list can be obtained through the Rockwell Automation official website or AutoFax service.