ABB DO890 Digital Output 4-Ch Intrinsic Safety

ABB DO890 Digital Output Module with Intrinsic Safety

• Brand & Model: ABB (DO890). This compact unit delivers four isolated 11 V, 40 mA outputs for process automation.
• Output & Load: Each channel drives a 100–5000 Ω field load. Typical load is 300 Ω at 40 mA, ideal for solenoid valves and sounders.
• Diagnostics & Protection: Configure open-circuit (>100 kΩ) and short-circuit (<20 Ω) detection per channel. The output is short-circuit proof with current limiting.
• Isolation & Power: All four channels feature galvanic isolation from each other, the ModuleBus, and the 24 V supply. Power dissipation is 4.4 W.
• MTU Compatibility: Use with TU890 (Ex applications) or TU891 (non-Ex) for direct two-wire connections without extra terminals.
• Environmental & Safety: Operating temperature ranges 0 to +55 °C. It holds ATEX/IECEx Zone 2, cFMus, and marine certifications (ABS, BV, DNV, LR).
• Physical Dimensions: Width 45 mm, depth 102 mm (111 mm with connector), height 119 mm. Weight is 0.2 kg.

Installation Guidelines

• Mount the module in an S800 series rack with TU890 or TU891 Compact MTU.
• Ensure the ambient temperature does not exceed 55 °C (40 °C for vertical mounting in compact MTU).
• Connect field devices using two-wire connections via the MTU—no additional terminals required.
• Apply 24 V external supply (typ. 250 mA, max. <360 mA) and +5 V ModuleBus (typ. 80 mA).
• Configure open/short circuit supervision through the control system. Front LEDs indicate fault, run, warning, and channel status.

Technical Specifications

• Signal specification: 11 V, 40 mA per channel (solenoid driver).
• Number of channels: 4, individually isolated.
• Output load range: 100 – 5000 Ω (short-circuit proof).
• Rated insulation voltage: 50 V; dielectric test voltage 500 V a.c.
• Current consumption: +5 V ModuleBus typ. 80 mA, max. <150 mA; +24 V external typ. 250 mA, max. <360 mA.
• Fault sense current: < 4 mA. Supervision status intervals: 256, 512, or 1024 ms.
• Operating temperature: 0 to +55 °C; storage -40 to +70 °C.
• Protection class: IP20 (IEC 60529). Pollution degree 2, corrosion protection G3.
• EMC compliance: EN 61000-6-4, EN 61000-6-2. Electrical safety per EN 61010-1.

Package Contents

• ABB 3BSC690074R1 DO890 Digital Output Module (4 channels).
• Keying code AB for correct MTU insertion.
• Product documentation and quick-start guide (digital access).
• No additional mounting hardware required—fits directly into S800 rack.

Frequently Asked Questions

• Q: Is this module a genuine ABB product?
  A: Yes, we supply 3BSC690074R1 as brand-new, original ABB units.
• Q: What is the stock availability?
  A: We keep the DO890 in stock for immediate shipment.
• Q: How long does delivery take?
  A: We ship within 5 business days via DHL, FedEx, or UPS.
• Q: Can I use this module with non-Ex equipment?
  A: Yes, use TU891 for non-Ex applications; TU890 for Ex-rated installations.
• Q: What is the return policy?
  A: We support 30-day returns for unopened, resalable items.
• Q: Does this module support HART or redundancy?
  A: No, HART and redundancy are not supported. It is a high-integrity, intrinsic-safety output.

Contact Information Inquiries: sales@nex-auto.com , +86 153 9242 9628

Partner NexAuto Technology Limited: https://www.nex-auto.com/