Target power factor is already reached, or the system is operating within the programmed switching delay lock-out time.
| | Likely Cause | Remedial Action | | :--- | :--- | :--- | | Controller does not switch on | No or incorrect power supply; Blown fuse. | Check incoming AC supply voltage at the controller terminals; check and replace the protective fuse if necessary. | | Capacitors do not switch in | CT polarity reversed; Target PF already met; Load current too low. | Verify CT wiring and direction. Check if the actual PF is close to the target. Check if system load is above the minimum switching threshold. | | Power factor is over-corrected (leading) | Target PF set too low (e.g., 0.80); Incorrect CT ratio causing wrong measurement. | Increase the target PF (e.g., to 0.98 inductive). Verify and correct the CT ratio setting in the controller menu. | | Capacitor steps switch on/off rapidly (hunting) | Switching delays are too short; Load current is very close to the switching threshold. | Increase the correction and discharge delay times. Slightly adjust the switching sensitivity in the controller settings. | | Display shows "UC" or "OC" error | Under-capacitor current (UC): Capacitor not connected or step contactor failed. Over-capacitor current (OC): Capacitor failure or harmonic resonance. | Check wiring for that specific capacitor step. Inspect the capacitor's fuse or circuit breaker. For "OC", perform a harmonic analysis of the installation. | | Display shows "VA" | Measurement voltage is absent on at least one phase. | Check the measuring voltage fuses and wiring for a loose or broken connection. | | Display shows "OD" | Outputs are disabled. | Check the status of any active protection triggers, such as over-temperature or over-voltage. Check the "Auto/Manual" mode selector. |
Upon powering up the BR5016 for the first time, you must enter the programming mode to configure the basic system parameters. Operating blind without setting these values will lead to incorrect switching or system alarms. Step 1: Accessing the Expert/Setup Menu
Why it mattered then — and still does now --- Epcos Power Factor Controller Br 5016 Manual Pdf
Fix: Swap the S1 and S2 wires on the CT terminals, or cycle through the software phase-angle configuration settings until the reading matches the physical system state.
Verify CT wiring connections; check that current flows through the measured phase. Incorrect voltage-to-current phase relationship.
Uses self-optimized intelligent switching to minimize the number of operations and extend the life of capacitor banks. Data Logging: Target power factor is already reached, or the
Core features and functionality
Lower the target cos φ or remove permanent fixed capacitors.
In alternating current (AC) networks, power consists of two main components: active power (kW), which performs actual work, and reactive power (kVAR), which sustains the electromagnetic fields required by inductive loads like motors and transformers. The ratio of active power to total apparent power (kVA) is defined as the power factor ( | | Capacitors do not switch in |
Using the wrong manual can lead to incorrect CT scaling or dangerous over-correction.
The controller is designed for panel mounting in a standard 138x138mm cutout.