Analog to RS485 Converter
With the latest data acquisition module, 4 or 8 analog single-ended or differential channels are provided, addressing general industrial applications. Multiple input type versions make it possible to go for U (multi-input: Thermocouples, RTD PT100, Volts, mV, mA), P (RTD PT100 3-wire), T (Thermocouples/mV), or D (DC V/mA). Each channel has 4 programmable soft alarms with LED indicators for monitoring purposes. The isolated version offers total isolation from the RS485 port, thereby improving overall safety and reliability. A PC tool is provided for configuration and parameter setting, leaves the user with very little to do.
With the latest data acquisition module, 4 or 8 analog single-ended or differential channels are provided, addressing general industrial applications. Multiple input type versions make it possible to go for U (multi-input: Thermocouples, RTD PT100, Volts, mV, mA), P (RTD PT100 3-wire), T (Thermocouples/mV), or D (DC V/mA). Each channel has 4 programmable soft alarms with LED indicators for monitoring purposes. The isolated version offers total isolation from the RS485 port, thereby improving overall safety and reliability. A PC tool is provided for configuration and parameter setting, leaves the user with very little to do.
Key Feature
- 4 or 8 Single Ended or Differential Input Analog Channels
-
Input type versions
U : Each Channels Independently Configurable for Thermocouples, RTD PT 100, Volts, mV, and mA (No jumper settings)
P : All Channels RTD PT100 (3 wire)
T : Each Channel Independently Configurable for Thermocouples / mV o D : Each Channel Independently Configurable for DC V/ mA
- 4 Programmable Soft Alarms for each Channel with LED indicators
- Isolated Version available (All channels isolated from RS485 port)
- PC tool for easy Configuration and parameter settings
Specification
| Number of Channels | 4 / 8 |
| Input types |
Thermocouples: J, K, T, R, S, B, N RTD: PT 100, 3 Wire DC mV:
|
| Accuracy | ± 0.25% of reading |
| Corrections |
|
| Range | Thermocouple & RTD PT100: Refer Table-1 DC Volts/Current: -30000 to +30000 Counts |
| Zero Offset | User Adjustable over Full Range for each Channel |
| ADC | 16 Bit (±32,768 Counts), Sigma-Delta (ΣΔ) |
| Sampling time |
Version U: 250 mS Per Channel (4 samples/sec) Version P: 333 mS Per Channel (3 samples/sec) Version T: 100 mS Per Channel (10 samples/sec) Version D: 100 mS Per Channel (10 samples/sec) |
| Input Resistance | Differential Mode > 20MΩ, Common Mode > 10MΩ |
| Common mode Rejection | > 100dB at 50 / 60 Hz |
| Input Protection | ESD: 8KV, EFT: 2KV, Surge: 1KV |
| Input Conditioning | First Order Analog R-C Low Pass Filter |
| Isolation (Optional) |
All Channels isolated from RS485 port 1500VAC for 1 second or 250VAC continuous |
| Port | RS485, 2-wire, half duplex, start-stop synchronized |
| Protocol | Modbus RTU |
| Baud Rate | Settable: 2400, 4800, 9600, 19200, 38400, 57600, 115200 |
| Parity | Settable: None, Even, Odd |
| Max Units per loop | 31 |
| Type | Switch Mode (SMPS) |
| Line Voltage |
20 ~ 32 VDC, Nominal 24VDC @ 350mA Min Note: In case of looping multiple modules on one power source, make sure that the source is capable of supplying minimum 350mA current per module |
| Consumption | 3VA Max |
| Mounting | DIN rail |
| Overall Dimensions | 22.5(W) X 101(H) X 119(D), mm |
| Terminals | Screw Type, Pluggable |
| Weight | 400gm, Approx |
| Operating Ambient | 0 to 55 ºC & 5 to 90% RH Non-condensing |
| Storage Temperature | -10 to +70 ºC |
| Atmospheres | Not suitable for use in corrosive or explosive Atmosphere. The panel in which the instrument is mounted must be free of |
| Weight | 400gm, Approx |
Specification
| Number of Channels | 4 / 8 |
| Input types |
Thermocouples: J, K, T, R, S, B, N RTD: PT 100, 3 Wire DC mV:
|
| Accuracy | ± 0.25% of reading |
| Corrections |
|
| Range |
Thermocouple & RTD PT100: Refer Table-1 DC Volts/Current: -30000 to +30000 Counts |
| Zero Offset | User Adjustable over Full Range for each Channel |
| ADC | 16 Bit (±32, 768 Counts), Sigma-Delta (ΣΔ) |
| Sampling time |
Version U: 250 mS Per Channel (4 samples/sec) Version P: 333 mS Per Channel (3 samples/sec) Version T: 100 mS Per Channel (10 samples/sec) Version D: 100 mS Per Channel (10 samples/sec) |
| Input Resistance | Differential Mode > 20MΩ, Common Mode > 10MΩ |
| Common mode Rejection | > 100dB at 50 / 60 Hz |
| Input Protection | ESD: 8KV, EFT: 2KV, Surge: 1KV |
| Input Conditioning | First Order Analog R-C Low Pass Filter |
| Isolation (Optional) | All Channels isolated from RS485 port 1500VAC for 1 second or 250VAC continuous |
| Port | RS485, 2-wire, half duplex, start-stop synchronized |
| Protocol | Modbus RTU |
| Baud Rate | Settable: 2400, 4800, 9600, 19200, 38400, 57600, 115200 |
| Parity | Settable: None, Even, Odd |
| Max Units per loop | 31 |
| Type | Switch Mode (SMPS) |
| Line Voltage |
20 ~ 32 VDC, Nominal 24VDC @ 350mA Min Note: In case of looping multiple modules on one power source, make sure that the source is capable of supplying minimum 350mA current per module |
| Consumption | 3VA Max |
| Mounting | DIN rail |
| Overall Dimensions | 22.5(W) X 101(H) X 119(D), mm |
| Terminals | Screw Type, Pluggable |
| Weight | 400gm, Approx |
| Operating Ambient | 0 to 55 ºC & 5 to 90% RH Non-condensing |
| Storage Temperature | -10 to +70 ºC |
| Atmospheres | Not suitable for use in corrosive or explosive Atmosphere. The panel in which the instrument is mounted must be free of |
| Weight | 400gm, Approx |
Ordering Info
4 Channel Analog to Modbus 485 Converter —————————————————– SAIC-4C
8 Channel Analog to Modbus 485 Converter —————————————————— SAIC-8C
IP-65 box with mounting accessories and cable glands for converter as shown in the below photographs on
additional cost.
