ABB 3DDE300405 CMA125 Generator Card

Product Specifications

CMA 125

Model Type: 3DDE 300 405

CMA125 Generator Card

Manufacturers:ABB

Model(s):ABB Synpol D

Estimated Shipping Size

Dimensions: 5.0" x 7.0" x 1.0"

(12.7 cm x 17.8 cm x 2.5 cm)

Weight: 0 lbs 4.0 oz (0.1kg )

Packaging & Delivery

Packaging Details: original packing factory sealed

Delivery Detail: Shipped in 3-5 days after payment

Shipping Detail

1) For the in-stock items, we will send the order out within 3 days after receiving the payment.

2) We can shipping all over the world via DHL, UPS, FedEx, and EMS. The packaging is very strong. If you have any special needs, please notify me.

3) You are expected to receive the item about 7 days after we send it out.

About Us

We mainly manage the PLC module, DCS module, CPU module, IO module, DO module, AI module, DI module, network communication module.

Ethernet module, motion control module, analog input module, analog output module, digital input module, digital output.

Modules, Redundancy Modules, Power Modules, Relay Output Modules, Relay Input Modules, Processor Modules.

CMA125 work

The Inverter consists of six power semiconductor switches whose operation is controlled by the Motor Control Card via the Main Circuit Interface Card.

Turning these switches on and off in a certain sequence is called modulation.

The modulation frequency in the ACH 504 is about 3 kHz at maximum and cannot be altered.

The potential at any terminal U2, V2, W2 (T1, T2, T3) of the inverter can only be high or low.

The modulation determines which one.

At any instant, the line to line output voltage is either 0 V when the switches in these phases are in the same position or ± 1.35 x VIN when the corresponding switches are in different positions.

The output voltage waveform is a pulse-train. The widths of the pulses depend on the modulation. The purpose of the modulation is to create the fundamental voltage wave (its amplitude and frequency), e.g., according to the law Vout / fout = constant (V/Hz).

The distortion of the output voltage from the sinusoidal fundamental creates corresponding harmonics in the motor current.

However, since the motor is highly inductive and the modulation frequency is relatively high, the current waveform is nearly sinusoidal.

Protective features Should something adverse happen during power-up or normal duty, the drive incorporates the following features to protect itself:

• Internal overtemperature (warning and trip)

• Overcurrent (two current limits and trip)

• Input line phase loss / unbalance (trip)

• Overvoltage (trip at 130% nominal DC-voltage)

• Undervoltage (trip at 60% nominal DC-voltage)

• Starting at overvoltage (>117% of nominal DC-voltage inhibits start)

• Ground Fault (>2.5 amps)

In addition, the drive identifies various internal and external hardware faults

and displays a diagnostic message.

A ground fault detection test is performed each time a start command is given.

The ACH 504 also has a variety of protective features for the motor, such as:

• Stall (warning and trip)

• Overload (warning and trip)

• Underload (warning and trip)

Power-off sequence A high voltage remains on the capacitor bank after the line voltage is disconnected.

This voltage is discharged through discharging resistors (R11) within five minutes.

Always use a voltage measurement to determine that the voltage has dropped before performing any service or making main circuit connections.

Measure between terminals UDC+ and UDC-; also measure between UDC+ and chassis ground. The meter must be capable of withstanding 1000 VDC.

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