Name: ABB DO890 3BSC690074R1 Digital Output Module 4 Channel Intrinsic Safety S800 I/O
SKU: DO890
Price: 213.00 USD
Availability: InStock

Product details

Product Overview

ABB DO890 3BSC690074R1 is a 4-channel digital output module with intrinsic safety interface. It drives Ex-certified solenoid valves, alarm sounders, and indicator lamps directly without external barriers. Each channel delivers 40 mA into 300 ohm field loads. Channels are fully isolated from each other and from ModuleBus. Works with TU890 (Ex) or TU891 (non-Ex) Compact MTU. Built-in open and short circuit detection per channel.

Model Structure & Key Features

DO890 – Intrinsic Safety Digital Output Series
- 4 channels for 11 V, 40 mA digital outputs
- Intrinsic Safety components on each channel – no external barriers
- Drive Ex solenoid valves, alarm sounders, indicator lamps
- Open and short circuit detection configurable per channel
- Full galvanic isolation channel-to-channel and from ModuleBus
- Output and fault status LEDs per channel
- Short circuit proof current limited outputs
- TU890 for Ex applications | TU891 for non-Ex applications
- Keying code AB for mechanical compatibility

Technical Specifications

Brand ABB
Model DO890 (3BSC690074R1)
Type Digital Output – Solenoid Driver with Intrinsic Safety
Channels 4
Signal specification 11 V, 40 mA
Output load range 100 – 5000 Ω
Isolation Individually isolated channel-to-channel and to ground
Current limiting Short circuit proof
Open circuit detection > 100 kΩ
Short circuit detection < 20 Ω
Fault sense current < 4 mA
Status indication timing 256, 512, 1024 ms
Rated insulation voltage 50 V
Dielectric test voltage 500 V a.c.
Power dissipation 4.4 W
Current consumption +5 V Modulebus Typ. 80 mA, Max. <150 mA
Current consumption +24 V external Typ. 250 mA, Max. <360 mA
Operating temperature 0 to +55 °C (+32 to +131 °F)
Storage temperature -40 to +70 °C (-40 to +158 °F)
Protection class IP20
Pollution degree Degree 2
Corrosion protection ISA-S71.04 G3
Dimensions (HxWxD) 119 x 45 x 111 mm (4.7 x 1.77 x 4.37 in)
Weight 0.2 kg (0.44 lbs)

Compatible Termination Units

TU890 – Compact MTU for Ex applications (intrinsic safety)
TU891 – Compact MTU for non-Ex applications
Two-wire connection direct to process devices without extra terminals
Keying code AB ensures correct module insertion

Diagnostics & Status Indication

Front LEDs F(ault), R(un), W(arning), O(SP), Channel 1-4 status
Internal process supply supervision Monitors output power
Open circuit detection Configurable per channel, threshold >100 kΩ
Short circuit detection Configurable per channel, threshold <20 Ω
Fault sense current Less than 4 mA during supervision
Status timing Selectable 256, 512, or 1024 ms

Mounting & Installation

Mounting system S800 I/O – fits compact MTU TU890/TU891
Max ambient temp (horizontal) 55 °C (131 °F)
Max ambient temp (vertical in compact MTU) 40 °C (104 °F)
Field wiring Two-wire direct to process devices
No external barriers needed for hazardous areas

Certifications & Compliance

CE mark Yes
Electrical safety EN 61010-1, EN 61010-2-201
Hazardous locations ATEX/IECEx Zone 2 with interface to Zone 0, cFMus Class 1 Div 2/Zone 2 with interface to Div 1/Zone 0
Marine certifications ABS, BV, DNV, LR
EMC EN 61000-6-4, EN 61000-6-2
Equipment class Class I (earth protected)
RoHS compliance EU RoHS, UAE RoHS, CN RoHS
WEEE compliance Directive 2012/19/EU

Package & Shipping

Included DO890 module
Warranty 12 months against defects
Express shipping FedEx, UPS, DHL – 2-5 business days
Order processing Within 24 hours for stock items

Frequently Asked Questions

Q: Do I need external safety barriers with DO890 in hazardous areas?No. DO890 has built-in intrinsic safety components on each channel. It connects directly to Zone 0 equipment without external barriers.
Q: What MTU should I use with DO890?Use TU890 for Ex applications (hazardous areas). Use TU891 for non-Ex applications. Both allow two-wire direct connections.
Q: What field devices can DO890 drive?DO890 drives Ex-certified solenoid valves, alarm sounders, and indicator lamps. It delivers 40 mA into 300 ohm loads.
Q: How does open and short circuit detection work?Each channel monitors continuously. Open circuit triggers above 100 kΩ. Short circuit triggers below 20 Ω. Fault sense current is under 4 mA.
Q: What is the keying code for DO890?DO890 has keying code AB. This mechanical code prevents inserting the wrong module type into the MTU slot.
Selection tip: Choose DO890 when you need to control Ex solenoids or alarms in Zone 0/1 areas. It eliminates external barrier costs and saves panel space.
Experience note: Always configure open/short detection based on your field device. Solenoid coils may show different resistance values at cold start.