7-Channel AC/DC Power Acquisition Module

Analog Input

Input Channels

7-channel fully isolated AC signal input

(DAM-3053AC series modules)

7-channel fully isolated DC signal input

(DAM-3053DC series modules)

Input Type

Voltage signal, current signal

Measurement Range

Voltage range: 0-10V, 0-35V, 0-50V, 0-100V, 0-300V.

Current range: 0-0.2A, 0-0.5A, 0-1A, 0-1.5A, 0-5A, 0-10A.

(Module ranges can be customized. For example: DAM-3053DC-35V/1A range is DC voltage 0-35V,

DC current 0-1A. DAM-3053AC-35V/1A range is AC voltage 0-35V,

AC current 0-1A.)

Output Parameters

Voltage, current, power, forward active energy, reverse active energy

Sampling Period_{Note 1}

Configurable from 40ms to 1000ms, corresponding to sampling frequency of 25Hz to 1Hz (single channel)

Special note for AC suffix modules: For 50Hz power frequency signals, configurable from 40ms to 1000ms,

For other signals from 30-65Hz, configurable from 500ms to 1000ms

Resolution

16-bit

Measurement Accuracy

2‰

Input Impedance

Voltage channels: Input impedance is 600KΩ at 10V range,

2MΩ at 35V range,

2MΩ at 50V range,

2MΩ at 100V range,

2MΩ at 300V range;

Above are standard impedances, custom requirements are available.

Current channels: = Sampling resistor value, typically current range × sampling resistor value ≤ 0.17V,

If range is above 5A, resistor value may be reduced appropriately considering heat dissipation

Isolation Voltage

2500VRMS (surge protection voltage)

Others

Communication Interface

RS485

Baud Rate

1200～115200bps

Data Transmission Rate_{Note 2}

Passive upload: Speed varies with different baud rates and data lengths.

Calculation method: Assuming 6 registers to be read, baud rate set to 9600,

Each byte has 8 data bits, 1 start bit, 1 stop bit totaling 10 bits,

Host read command has 8 bytes, device reply has 6×2+5 bytes,

At least 3.5 bytes interval between send and reply, maximum passive upload frequency = 9600/10/(8+17+3.5)=33Hz, considering varying device processing times,

This calculation is for reference only, actual frequency may be lower.

Active upload: Same as sampling frequency, upload once per acquisition, maximum 25Hz.

Must also satisfy baud rate/10/(number of upload registers×2+5) > sampling frequency,

To ensure complete data transmission. Upload content see MODBUS communication example section later

Watchdog

Software watchdog

Power Supply Voltage

+10～30VDC

Power Protection

Reverse power protection

Power Consumption

Rated 2W @ 24VDC

Operating Temperature

-10℃～＋70℃

Storage Temperature

-20℃～＋85℃