Isolated Positive and Negative 0-5V to RS232/RS485 A-D Converter ISO 4021 Series
Analog data acquisition isolated AD conversion amplifier module. Shunyuan technology patented products
Product Description
ISO4021 Series Isolated 0-±100mV,0-±10V,4-20mA,0-±20mA to RS232/RS485 A-D Converter
Model selection：
ISO 4021 U(A)□ - □
U/A: Input voltage or current signal Output: communication interface
U1：0-5V A1：0-1mA 232/485： Output is RS-232 or RS-485 interface
U2：0-10V A2：0-10mA
U3：0-75mV A3：0-20mA
U4：0-2.5V A4：4-20mA
U5：0-±5V A5：0-±1mA
U6：0-±10V A6：0-±10mA
U7：0-±100mV A7：0-±20mA
U8：Customized A8：Customized
Remark：When the communication interface is RS232, it should connect with RXD and TXD port; when the communication interface is RS485, it should connect with DATA+ and DATA- Port. RS232 and RS485 can’t work at the same time.
E.g.
1： ISO 4021 A4-232/485 Means 4-20ma signal input, output is RS232 or RS485
2： ISO 4021 U1-232/485 Means 0-5V signal input, output is RS232 or RS485
3： ISO 4021 U5-232/485 Means 0-±5V signal input, output is RS485 or RS232
ISO 4021 A-D Converter General Parameters：
(typical @ +25℃，Vs is 24VDC)
Input： Voltage / Current
Accuracy： 0.05%
Input imbalance： ±0.1 uA/℃
Temperature Drift： ±15 ppm/℃ (±30 ppm/℃, max)
Input Resistance： 50Ω (4-20mA/0-20mA/0-±20mA current input)
100Ω (0-10mA/0-±10mA current input)
1KΩ (0-1mA/0-±1mA current input)
>1MΩ(voltage input)
Band width： -3 dB 10 Hz
Switching rate： 10 Sps
Common mode restraint(CMR)： 120 dB（1kΩ Source Imbalance @ 50/60 Hz）
Normal mode restraint(NMR)： 60 dB （1kΩ Source Imbalance @ 50/60 Hz）
Input Port protection： over-voltage/over current protection
Communications： protocol RS-485 or RS-232 ASCII protocol and MODBUS RTU communication protocol
Baud rate（300、600、1200、2400、4800、9600、19200、38400bps）software configuration
address（00H~FFH）software configuration
Response Time：100 ms max
Operation Power Supply： +8 ~ 50 VDC wide power supply range, internal anti-reverse & over-voltage protection
watt consumption： < 1W
Operation Temperature： - 45 ~ +80℃
Operation Humidity： 10 ~ 90% (non-condensing)
Storage Temperature： - 45 ~ +80℃
Storage Humidity： 10 ~ 95% (non-condensing)
Isolation withstand voltage： between input and output： 3KVDC，1 minute，stray current 1mA
Output and power are common-ground.
Endure Impact Voltage： 3KVAC， 1.2/50us(peak value)
Dimensions： 83 mm x 37 mm x 51mm
Weight： 72g
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