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trodeksBUS Computer-to-Analog OutputModules
D3000 and D4000
PLACE ORDER - Analog Output Ranges: 0-1 V, ±1 V, 0-5 V, ±5 V, 0-10 V, ±10V, 0-20 mA, 4-20 mA
- Programmable High/Low Output Limits
- 500 V rms Output Isolation
- Scaling in Engineering Units
- 12-Bit Resolution
- Baud Rates: 300 to 38,400
- Output Protection: 240 Vac (CurrentOutput), ± 30 V (Voltage Outputs)
Description
Description
The D3000 and D4000 computer-to-analog outputinterfaces are designed to be mounted remotelyfrom a host computer and communicate withstandard RS-232 and RS-485 serial ports. SimpleASCII commands are used to control a 12-bitdigital-to-analog converter that is scaled to provide commonly used current and voltage ranges.An on-board microprocessor provides thecommunications interface and many intelligentanalog output functions. These modules offer anextremely flexible, easy-to-use, and cost-effective approach to data acquisition. The D3000 and D4000 are compatible with thetrodeksBUS®D1000 and D2000 and may be used inany combination. Up to 124 modules may be strung onone set of wires. All modules are supplied with screwterminal plug connectors and captive mountinghardware. The connectors allow system expansion,reconfiguration, or repair without disturbing field wiring.Their small size allows them to be mounted in virtuallyany location or position including explosion-proofhousings and DIN rails. Utility software (D1000-SW)is available upon request at no charge on anIBM-compatible disk.The D4000 modules offer several additionalfeatures. A slew rate may be programmed,which causes the output to ramp at anadjustable rate in either an increasing ordecreasing direction. The ramp can be initiatedand maintained by commands from thecomputer or with external switch closures to themodule. The D4000 module provides areadback feature which allows the computer toverify the integrity of the output.The D4000 modules also include a watchdogtimer circuit that can be set such that if thecomputer fails to communicate with the moduleafter a preset time period, the module will resetitself to an adjustable default value. This featureminimizes the risks of communication failure.The A1000 RS-232 to RS-485 converter and repeatercan be used if an RS-485 port is not available in yourPC, and it is necessary to communicate long distancesaway. The A1000 also provides power for the modules.RS-232 modules can be used for distances less than50 feet.
Common Specifications, D3000 and D4000 ANALOG OUTPUT
• Single channel analog output
Voltage: 0-1 V, ± 1 V, 0-5 V, ± 5 V, 0-10 V, ± 10 V
Current: 0-20 mA
• Input isolation to 500 V rms
• 12-bit measurement resolution
• Accuracy (integral and differential non-linearity): 0.1% FSR (max)
• Zero drift: ±30 µV/°C (voltage output) ±1.0µA/°C (current output)
• 1000 conversions per second
• Settling time to 0.1% FS 300 µs typical (1 ms max)
• Programmable output slew rate: 0.01 V/s (mA/s) to 10,000 V/s (mA/s) (D4000 only)
• Autozero and autocalibration-no adjustment pots
• Voltage compliance: ±12 V
• Output current, short circuit current: 5 mA min, 10 mA max
ANALOG OUTPUT READBACK (D4000)
• 8-bit analog-to-digital converter
DIGITAL INPUTS
• Voltage levels: ±30 V without damage
• Switching levels: High, 3.5 V min, low, 1.0 V max
• Internal pull-up resistors for direct switch input
COMMUNICATIONS
• RS-232, RS-485
• Up to 124 modules with A1000 converter/repeater, 32 without A1000
• User selectable channel address (via software command)
• Selectable baud rates: 300, 600, 1200, 2400, 4800, 9600, 19.2K, 38.4K
• ASCII format command/response protocol
• Parity: odd, even, none
• All communications setups (address, baud rate,parity) stored in nonvolatile memory using EEPROM
• Checksum can be added to any command or response
• Communications distance up to 10,000 feet with RS-485 modules
Power Requirements: Unregulated +10 V to +30 Vdc, 0.75 W max (voltage output), 1.0 W max (current output)
Case: ABS with captive mounting hardware
Connectors: screw terminal barrier plug (supplied)
Temperature Range: Operating: -25°C to 70°C
Storage: -25°C to 85°C
Relative Humidity: 0 to 95% non-condensing
| Model No. | Output Range | Input |
| D3000 Series Output Module - Voltage Output |
| D3121 | ± 1 V | RS-232C |
| D3122 | ± 1 V | RS-485 |
| D3131 | ± 5 V | RS-232C |
| D3132 | ± 5 V | RS-485 |
| D3141 | ± 10 V | RS-232C |
| D3142 | ± 10 V | RS-485 |
| D3161 | 0 to 1 V | RS-232C |
| D3162 | 0 to 1 V | RS-485 |
| D3171 | 0 to 5 V | RS-232C |
| D3172 | 0 to 5 V | RS-485 |
| D3181 | 0 to 10 V | RS-232C |
| D3182 | 0 to 10 V | RS-485 |
| D3000 Series Output Module - Current Output |
| D3251 | 0 to 20 mA | RS-232C |
| D3252 | 0 to 20 mA | RS-485 |
| D4000 Series Output Module - Voltage Output |
| D4121 | ± 1 V | RS-232C |
| D4122 | ± 1 V | RS-485 |
| D4131 | ± 5 V | RS-232C |
| D4132 | ± 5 V | RS-485 |
| D4141 | ± 10 V | RS-232C |
| D4142 | ± 10 V | RS-485 |
| D4161 | 0 to 1 V | RS-232C |
| D4162 | 0 to 1 V | RS-485 |
| D4171 | 0 to 5 V | RS-232C |
| D4172 | 0 to 5 V | RS-485 |
| D4181 | 0 to 10 V | RS-232C |
| D4182 | 0 to 10 V | RS-485 |
| D4000 Series Output Module - Current Output |
| D4251 | 0 to 20 mA | RS-232C |
| D4252 | 0 to 20 mA | RS-485 |
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