0-20mA/4-20mA to RS485/RS232 Converter (support Modbus RTU)
Model selection:
ISOAD A -
Input and Channel Code Communication interface
Channel code: 01 ~ 08, number of channel
01: 1 channel 4-20mA/0-20mA signal input 485: Output is RS-485 interface
02: 2 channel 4-20mA/0-20mA signal input 232: Output is RS-232 interface
03: 3 channel 4-20mA/0-20mA signal input
...
08: 8 channel 4-20mA/0-20mA signal input
Note: If the selected product has less than 8 channels, it is the same externalview as that of AD A08, wiring scheme, and communication protocol. The only difference is that the selected one has less channels to measure data.
Mode selection eg. 1: Model: ISOAD A01-485 Indicates 1 channel, 4-20mA/0-20mA signal input, input is RS485 interface
Mode selection eg. 2: Model: ISOAD A06-232 Indicates 6 channel, 4-20mA/0-20mA signal input, input is RS-232interface
Mode selection eg. 3: Model: ISOAD A08-485 Indicates 8 channel, 4-20mA/0-20mA signal input, input is RS 485interface
ISOAD Series 4-20mA to RS485/RS232 Converter Inroduction:
(typical @ +25º C, Vs is 24VDC (It is recommended to use power supply under high stability and precision environment. )
Input type: Input current 4-20mA/0-20mA
Precision: @ +25º C (table 1)
Input detuning: ± 0.1 uA/º C
Temperature drift: ± 15 ppm/º C (± 30 ppm/º C, max)
Input resistance: < 250 Ω (4-20mA/0-20mA input current)
Bandwidth: -3 dB 10 Hz
Conversion rate: 10 Sps
Common mode restraint (CMR): 120 dB(1kΩ Source Imbalance @ 50/60 Hz)
Norm mode restraint (NMR): 60 dB (1kΩ Source Imbalance @ 50/60 Hz)
Input terminal protection: Over-voltage protection and over-current protection
Communication: Support standard Modbus RTU protocol and character communication protocol, RS-485 or RS232 interface.
Baud rate(300 bps. 600 bps. 1200 bps. 2400 bps. 4800 bps. 9600 bps. 19200 bps. 38400bps)software selection is available
Location(0x00~0xFF)software selection is available
Communication response time: 100 ms max
Power supply: +8 ~ 50 VDC wide range power supply, internal anti-reverse and overvoltage protection circuit
Power consumption: Less than 1W
Operating temperature: - 45 ~ +80º C
Humidity: 10 ~ 90% (no condensation)
Storage temperature: - 45 ~ +80 º C
Storage humidity: 10 ~ 95% (no condensation)
Isolation voltage: Input channel 1 / input channel 2 /.../ input channel 8 / output / auxiliary power supply
Between every two group: 3KVDC, 1 minute, leakage current 1mA.
Shock voltage: 3KVAC, 1.2/50us (peak)
Dimensions: 145 mm x 82 mm x 42mm
Weight: About 256g
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