Overview
DAM-3055N is an acquisition module with 16-channel differential analog input, 16-bit resolution, analog input isolation, RS485 communication interface, and standard ModbusRTU protocol. It is equipped with a good human-computer interface, so it is easy to use and its performance is stable.
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Analog Input
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Input Channel
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8 differential analog input
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Input Type
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Voltage input, current input
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Input Range
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4~20mA（default）
±150 mV，±500 mV，±1V，±2.5V，±5V，0~2.5V，0~5V，1~5V，0~10V，±10V，±20mA，0~20mA，4~20mA，0~22mA
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Sampling RateNote 1
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Total channel 10sps
Each channel = 10sps / number of enabled channels Note 2
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Resolution
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16 bit
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Acquisition Accuracy
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1‰ (Note: the error is 1% under the ±150 mV and ±500 mV range)
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Input Resistance
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Voltage range: 10MΩ Current range: 125Ω
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Common Mode Voltage
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1500VDC
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Isolation Voltage
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Each channel can be independently configured range
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Others
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Communication Interface
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RS485
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Baud Rate
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1200~115200bps
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Data Communication RateNote 3
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Maximum 100 times per second (single module, at 115200bps)
maximum 24 times per second (single module,at 9600bps)
maximum 3 times per second (single module, at 1200bps)
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WatchDog
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Software watchdog
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Supply Voltage
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+10V～30VDC
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Power Protection
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Reverse protection
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Power Consumption
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Rated 1.5W @ 24VDC
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Operating Temperature
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-10℃～＋70℃
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Storage Temperature
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-20℃～＋85℃
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Note:
1. Sampling Rate: This parameter refers to the acquisition speed of the ADC chip.
2. Number of Enabled Channels: Configured by the host computer software, check the box under "Sampling Enable", and the customer can independently select the number of channels and channel numbers to enable sampling.
3. Data Communication Rate: This parameter refers to the communication speed between the MCU controller and the host computer.
Working principle
The upper computer sends MODBUS RTU protocol instructions to the DAM terminal through RS232/RS485/USB/RJ45/WIFI to achieve data acquisition.
Multiple devices can be cascaded through the 485 bus, with each device having a different address. The maximum communication distance of the 485 bus is 1200 meters, and the communication distance can be increased through a 485 repeater according to the actual application environment
