1790D-TN0C2 2-Channel Analog Current Output Module
Brand: Oiltech Controls · Series: 1790D Compact Analog Output
Industrial-grade nonisolated output module. Converts digital data to 0…20 mA signals. Supports up to 2 expansion modules. Designed for PLC/DCS systems.
Technical Specifications
| Outputs | 2 channels, single-ended, nonisolated |
| Output current | 0 … 20 mA |
| Resolution | 12 bits (1/4096) · 4.88 µA/bit |
| Conversion data | Binary 0000 to 0fff (max scale) |
| Conversion time | 2 ms per channel |
| Accuracy | ±0.2% full scale @ 0…55 °C |
| Load resistance | 600 Ω max (external) |
| Insulation resistance | 20 MΩ min @ 250V dc (between isolated circuits) |
| DeviceNet power | 24V dc nom (11-28.8V dc) · 1.2 W max @ 28.8V |
| Field power | 24V dc nom (21.6…26.4V) · 1.5 W max @ 26.4V |
| Isolation | I/O to logic: photocoupler (1250V ac rms, 60s); DeviceNet & field power: nonisolated |
| Indicators | 2 red/green I/O status LEDs |
| Wiring | M3.0 terminal block · torque: 7 lb-in max (copper/copper-clad aluminum) |
Key Features & Diagnostics
- No calibration required – saves maintenance time.
- Diagnostic LEDs show channel status (red/green) for quick fault detection.
- Built-in over-range and under-range detection (binary scale).
- Photocoupler isolation protects logic from I/O surges.
- Wide temperature range 0…55 °C, suitable for harsh industrial floors.
- High noise immunity via 20 MΩ insulation resistance.
Installation & Maintenance
- Mount on DIN rail or panel. Use M3.0 screws (7 lb-in max).
- Connect DeviceNet power (11-28.8V) and field power (21.6-26.4V).
- Max 2 discrete expansion modules per base.
- No field calibration – plug and play.
- Terminal block accepts copper or copper-clad aluminum conductors.
Compatibility & Certifications
- Compatible with any PLC/DCS accepting 0-20 mA analog inputs.
- Isolation Type Test: 1250V ac rms for 60 s (I/O to logic).
- RoHS, CE compliant (industrial control equipment).
- DeviceNet protocol ready (nonisolated logic).
Typical Applications
- Valve position control · speed drives · pressure transducers.
- Temperature controller output · actuator signal conditioning.
- Retrofit obsolete analog output cards in existing systems.
Package Contents
- 1790D-TN0C2 module (1 unit).
- M3.0 terminal block (pre-installed).
- Quick start guide (digital copy).
- Warranty card (12 months).
Frequently Asked Questions
- Q: Can I use this with 4-20 mA sensors? A: Yes, with scaling in the controller.
- Q: Is external power required? A: Yes, separate DeviceNet and field supplies.
- Q: How many expansion modules? A: Maximum 2 discrete modules.
- Q: Shipping method? A: FedEx, UPS, or DHL (global).
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts.
- Global shipment support – fast delivery worldwide.
- Tested industrial surplus and refurbished options available.
- 12-month warranty on all modules.
- Technical verification before shipment.
- Expert support for obsolete control systems.
Contact us: info@oiltechcontrols.com · +86 158 8020 0923 (WhatsApp)
Original Source: https://www.oiltechcontrols.com/
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