1790D-T0V32 32-Point Sinking Output Base Module
Brand: Allen-Bradley | Series: Compact 1790D | Type: Digital DC Output Module
This 32-point nonisolated sinking output module delivers robust field control for 24V DC loads. It offers 0.5A per channel, fast signal response, and photocoupler isolation for reliable machine automation. Ideal for OEM and retrofit systems requiring high-density output expansion.
Key Technical Data
| Outputs per module | 32 points, nonisolated, sinking |
| On-state voltage | 10V min / 24V nom / 28.8V max DC |
| On-state voltage drop | ≤ 0.5V DC |
| On-state current (min) | 1 mA per channel |
| Off-state leakage | ≤ 0.5 mA |
| Output delay (Off→On) | 0.5 ms max |
| Output delay (On→Off) | 1.0 ms max |
| Current rating (per output) | 0.5 A max |
| Current rating (per common) | 4.0 A max |
| Common type | 16 points / 2 COM |
| Field power (nom) | 24V DC, range 10…28.8V |
| Power dissipation (field) | 6 mA @ 28.8V per point |
| Isolation (I/O to logic) | Photocoupler, 1250V AC rms |
| Indicators | 32 green status LEDs |
| Terminal block | M3.0 screw, torque 7 lb-in max |
| DeviceNet supply | 11…28.8V DC, 1.2W max @ 28.8V |
Environmental & General Specs
- ✔ Temperature range: 0°C to 55°C (operating), -40°C to 85°C (storage)
- ✔ Humidity: 5…95% non-condensing
- ✔ Shock & vibration: 30g / 5g (10…500Hz) – rugged for industrial floors
- ✔ Noise immunity: Meets EN 61000-6-2 for harsh EMC environments
Installation & Wiring
- Mount on standard DIN rail (35mm) or panel using M4 screws.
- Use copper or copper-clad aluminum conductors (M3.0 terminal).
- Torque terminals to 7 lb-in max – avoid overtightening.
- Supply field power 24V DC nom (10…28.8V range).
- Connect DeviceNet bus for logic communication (status byte configurable).
Commissioning & Maintenance
- Auto-detect on power-up: module reports I/O size (0 input / 1 status byte).
- Green LEDs per channel show real-time on/off state.
- No periodic calibration – solid-state design reduces downtime.
- Use standard flat-blade screwdriver for terminal access.
Diagnostic Capability
- Built-in status byte provides module health and field power OK.
- Output short-circuit protection (internal current limit).
- Open-wire detection via leakage current monitoring.
- Host controller can read diagnostic data over DeviceNet.
Compatibility
- Works with Allen‑Bradley CompactLogix and MicroLogix via DeviceNet.
- EDS file included for easy integration in RSLogix 5000 / Studio 5000.
- Supports default I/O map: 0 input bytes, 1 output byte (with status option).
- Replaces legacy 1790D‑T0V32 without wiring changes.
Certifications
- UL 508 Listed, cUL (CSA C22.2 No. 142).
- CE marked for European standards (EMC & LVD).
- ATEX Zone 2 / IECEx (non‑incendive) – suitable for hazardous areas.
- RoHS compliant, WEEE ready.
Package Contents
- 1790D-T0V32 Base Module
- Removable terminal block (M3.0)
- DIN rail clip (pre‑installed)
- Quick‑start guide (printed)
- EDS file on USB (optional)
Warranty & Shipping
- 12‑month warranty against defects in material and workmanship.
- Shipping via FedEx, UPS, or DHL – global express delivery.
- Tracking number provided within 24 hours.
Typical Applications
- Discrete output control for conveyor systems.
- Valve and solenoid actuator banks.
- LED indicator / alarm panels.
- Packaging machinery and material handling.
- Retrofit for obsolete 32‑point I/O racks.
FAQ – Quick Answers
- Q: Can I use this with 12V DC field power?
A: Yes, 10…28.8V DC range supports 12V and 24V systems. - Q: Is the module sinking or sourcing?
A: Sinking output – switches load to DC common. - Q: How many commons?
A: 2 commons, each serving 16 points. - Q: Does it require DeviceNet configuration?
A: Plug‑and‑play with default settings; EDS available for advanced config. - Q: What is the status byte function?
A: It reports field power OK and module internal fault.
Why Buy From Oiltech Controls?
- ✓ Over 15 years in industrial automation spares.
- ✓ Global shipment – fast, reliable, insured.
- ✓ Tested surplus & refurbished options, fully verified.
- ✓ 12‑month warranty on every order.
- ✓ Pre‑shipment technical verification by our engineers.
- ✓ Support for obsolete control systems – keep your legacy running.
Contact us:
info@oiltechcontrols.com
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+86 158 8020 0923 (WhatsApp)
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