E4809-436-002-A Okuma
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The Okuma E4809-436-002-A is part of the E4809 CNC Boards series, supporting 220 VAC AC input voltage and 300 VDC DC output voltage. It can handle up to 6 drive amplifiers, features a push discharge switch, and has visible LED labels including PS, MCON, DIS, LV, HV, and PH. The board has a middle-terminal resistor rated at 100 kiloohms and 2 watts power.
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Product Description:
The E4809-436-002-A is a power interface and protection board manufactured by Okuma for the E4809 CNC Boards series. Mounted in the control cabinet of a machining center, it sits between the mains supply and the servo amplifier stack, monitoring voltage, phases, and fault signals. By combining supply conditioning and status reporting on a single printed circuit assembly, the board streamlines wiring and supports preventive maintenance in automated production environments that run continuously.
To adapt to standard plant supply, the board receives an alternating input of 220 VAC across a 3-phase feeder. Its internal converter presents a steady direct-current rail of 300 VDC for the amplifiers. Overvoltage protection triggers when the bus climbs to 430 VDC, while an undervoltage circuit opens at 220 VDC to prevent incomplete gating of the power devices. A distribution header supports up to 6 drive amplifier crates without additional expansion. The conditioning circuit filters line peaks, absorbs regenerated energy, and feeds the common bus so that all axes share one energy pool. Comparator logic tied to the trip levels de-energizes the DC link and reports the event through the diagnostic header, helping protect connected hardware during abnormal supply conditions.
Further safety components complement the voltage supervision. A push-button discharge switch routes the bus through a middle-terminal resistor valued at 100 kΩ, and its rating of 2 W allows controlled energy bleed-off during service without damaging traces. Quick diagnostic insight is available through 5 check terminals and by observing the LED array labeled PS, MCON, DIS, LV, HV, and PH, which illuminate to signal power presence, contactor status, discharge activity, low-voltage events, high-voltage events, and phase detection. These features speed fault identification and help reduce unplanned downtime.
Frequently Asked Questions about E4809-436-002-A:
Q: What is the required AC input voltage for the E4809-436-002-A board?
A: The E4809-436-002-A is designed for 220 VAC AC input voltage requirements.
Q: How many drive amplifiers can the E4809-436-002-A support?
A: This model accommodates up to 6 drive amplifiers in operation.
Q: What is the high-voltage trip setting for the E4809-436-002-A?
A: The high-voltage trip point for this board is set at 430 VDC.
Q: What type of discharge switch does the E4809-436-002-A feature?
A: A push switch is used for the discharge switch function on this board.
Q: Which LED labels are visible on the E4809-436-002-A board?
A: The visible LED indicators on the board are labeled PS, MCON, DIS, LV, HV, and PH.
