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General| Brand | Leroy-Somer |
|---|---|
| Model | R438 |
| Category | Controller |
| Language | English |
Details the AREP excitation system configuration and power supply.
Explains the PMG excitation system and its advantages.
Describes the SHUNT or separate excitation system for the AVR.
Outlines the storage, operation, and power supply characteristics.
Details the function of various configuration jumpers (ST1-ST11).
Explains the function of setting potentiometers (P1, P2, P3, P5).
Illustrates voltage vs. frequency relationship without LAM.
Describes the Load Acceptance Module features and operation.
Explains the voltage drop behavior with LAM under load.
Details how voltage returns gradually after load changes.
Shows typical LAM effects on voltage, frequency, and power.
Illustrates voltage transient drop with LAM during load changes.
Shows frequency response with and without LAM during load changes.
Depicts power shedding due to LAM during load changes.
Lists optional modules and configurations for the R438 AVR.
Guide for performing essential electrical checks before operation.
Information on initial settings and adjustments for the AVR.
Specific settings for AREP or PMG excitation systems.
Recommended factory settings for adjustment potentiometers.
Procedures for adjusting stability in standalone operation.
How to set the maximum excitation current limit.
Covers special applications like field weakening and forcing.
Details field weakening for SHUNT excitation.
Details field weakening for AREP/PMG excitation.
Explains the field forcing procedure for the AVR.
Lists common electrical faults, actions, and causes.
Identifies the specific part number for the R438 AVR.
Information on obtaining technical support and ordering parts.
