RA1216 Remote Multifunction Data Acquisition Pod Family
16 single-ended or 8 differential analog inputs, 3 analog outputs, and 7 digital I/O lines
Features
- 16 single-ended or 8 differential analog inputs with 12-bit resolution
- Programmable input gain and offset; voltage, thermocouple, RTD, 4-20 mA, and strain-gage configurations
- Three 12-bit analog outputs with voltage and 4-20 mA current output capability
- Seven individually programmable digital I/O lines
- Optically isolated RS-485 with software-configurable address and baud rate
- On-board microcontroller, local memory, and watchdog timer
- NEMA 4 enclosure with screw-terminal connections
- USB, wireless, Ethernet, and RS-232 connectivity packages available
- Designed and manufactured in the USA
Price range: $540.00 through $570.00
In StockDescription
The RA1216 family combines analog input, analog output, and digital I/O in an intelligent remote data acquisition pod. The base unit communicates with a host computer through an optically isolated, half-duplex RS-485 interface. An on-board microcontroller and local memory support data collection close to sensors and equipment.
Analog Inputs and Signal Conditioning
The 12-bit successive-approximation converter accepts sixteen single-ended or eight differential inputs. Programmable gain and offset allow channels to be configured for different signal spans. The voltage-input model offers spans from 25 mV to 5 V, with bipolar operation available through the offset circuitry. Inputs include protection to 200 VDC.
Choose RA1216 for voltage inputs, RA1216T/C for up to seven thermocouples with cold-junction sensing, RA1216R for up to eight three-wire RTDs, RA1216I for up to eight 4-20 mA transmitter inputs, or RA1216B/C for eight quarter-bridge strain-gage completion circuits. Thermocouple break-detection resistors can be specified when ordering.
Voltage and Current Outputs
Three independent 12-bit D/A channels provide voltage and current outputs simultaneously. Each voltage output is programmable for 0-5 V or 0-10 V. The 4-20 mA outputs require a user-supplied compliance voltage of 5.5-30 V.
Digital Control and Remote Installation
Seven digital lines are individually programmable as inputs or open-collector outputs. Outputs support user-supplied voltages up to 50 VDC and sink up to 350 mA per line, subject to a combined 650 mA limit. Inductive-kick suppression is provided. A watchdog timer resets the controller following processor or supply faults.
The NEMA 4 enclosure includes internal screw terminals and a cable gland for field wiring. Separate supplies power the local circuitry and isolated serial interface to maintain isolation. The U-, WM-, E-, and S-prefix packages provide USB, wireless, Ethernet, and RS-232 host connectivity respectively.
Customized Analog I/O (MCOTS Options)
ACCES specializes in modified-COTS analog I/O. We can customize voltage ranges, sampling rates, filtering, isolation, gain stages, calibration profiles, firmware behavior, connector styles, and environmental ruggedness. If your analog requirements are unique, we excel at delivering tailored MCOTS analog hardware quickly and cost-effectively.
Analog Inputs
| Input channels | 16 single-ended or 8 differential |
|---|---|
| Resolution | 12 bits |
| Input spans | 5 V, 2.5 V, 1 V, 500 mV, 250 mV, 125 mV, 50 mV, and 25 mV; programmable offset supports bipolar operation |
| Accuracy | 0.025% ±1 LSB |
| Throughput | Up to 50,000 conversions/s in foreground mode; 6,670 conversions/s in background mode |
| Converter | Successive approximation |
| Trigger source | Software command or on-board programmable timer |
| Input protection | 200 VDC |
| Input impedance | 10 MΩ |
| Input filter | Low-pass, 10 kΩ / 0.1 µF |
| Gain drift | ±5 ppm/°C |
| Current-input configuration | RA1216I: 4-20 mA across 200 Ω (0.8-4 V) |
| Coding | True binary for unipolar inputs; offset binary for bipolar inputs |
Analog Outputs
| Channels | Three independent, double-buffered 12-bit outputs |
|---|---|
| Voltage ranges | 0-5 V or 0-10 V |
| Current output | 4-20 mA with user-supplied 5.5-30 V compliance voltage |
| Nonlinearity | ±0.9 LSB maximum |
| Monotonicity | ±½ bit |
| Output drive | 5 mA |
| Output resistance | 0.5 Ω |
| Settling time | 15 µs to ±½ LSB |
Digital I/O
| Lines | Seven, individually programmable as input or output |
|---|---|
| Input logic thresholds | Logic high: 2 V minimum; logic low: 0.8 V maximum |
| Output type | Open collector with inductive-kick suppression |
| Output compliance | Up to 50 VDC user-supplied voltage |
| Sink-current limits | 350 mA maximum per output; 650 mA maximum combined |
| Output pull-ups | 10 kΩ to +5 V when no external application voltage is applied |
Serial Interface
| Interface | Optically isolated RS-485; ASCII command/response protocol |
|---|---|
| Baud rates | 1200, 2400, 4800, 9600, 14400, 19200, 28800, and 57600 |
| Data format | 7 data bits, even parity, one stop bit |
| Module address | 00-FF hexadecimal, software programmable and retained in EEPROM |
Power and Environment
| Local supply | 12-16 VDC at 500 mA |
|---|---|
| Isolated serial-interface supply | 7.5-24 VDC at 50 mA |
| Operating temperature | 0 to +65 °C; optional -40 to +80 °C |
| Storage temperature | -20 to +120 °C |
| Relative humidity | 5-95%, non-condensing |
| Enclosure | NEMA 4; internal screw terminals and sealed cable entry |
Select the model for the required input configuration and host connection. The base model uses isolated RS-485. U-, WM-, E-, and S-prefix versions provide USB, wireless, Ethernet, and RS-232 connectivity packages. Contact ACCES for pricing and availability of these connectivity packages.
Call for Pricing
- U-RA1216 — RA1216 USB connectivity package
- WM-RA1216 — RA1216 wireless connectivity package
- E-RA1216 — RA1216 Ethernet connectivity package
- S-RA1216 — RA1216 RS-232 connectivity package
| Model | Description | Price (USD) | |
|---|---|---|---|
| RA1216 | Remote multifunction pod with voltage inputs, 3 analog outputs, 7 digital I/O lines, and isolated RS-485 | $540.00 | |
| RA1216T/C | RA1216 thermocouple-input configuration with cold-junction sensing | $565.00 | |
| RA1216R | RA1216 three-wire RTD-input configuration | $570.00 | |
| RA1216I | RA1216 4-20 mA current-input configuration | $570.00 | |
| RA1216B/C | RA1216 quarter-bridge strain-gage completion configuration | $570.00 | |
| U-RA1216 | RA1216 USB connectivity package | Call for price | |
| WM-RA1216 | RA1216 wireless connectivity package | Call for price | |
| E-RA1216 | RA1216 Ethernet connectivity package | Call for price | |
| S-RA1216 | RA1216 RS-232 connectivity package | Call for price |