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ABB AC500 S500 DO526 8-Channel High-Current Digital Output Module | Original New

ABB AC500 S500 DO526 8-Channel High-Current Digital Output Module | Original New

ABB AC500 S500

DO526

8-channel high-current digital output module with 24 V DC transistor outputs.

KEY SPECS: 8 DO in two isolated groups; 24 V DC; 2 A per channel; TU542 terminal unit.

LEAD TIME: In stock WARRANTY: 1 year

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WhatsApp +86 18159889985

Appurtenance:

Overview
Technical Data
Inquiry
I/O Functions
Electrical Data
Installation
Environment
FAQ
Recommend Models
Recommended Products

ABB AC500 S500 DO526

The DO526 is an S500 high-current digital output module for centralized AC500 expansion or decentralized S500 stations. It provides eight 24 V DC transistor outputs in two galvanically isolated groups of four channels.

Technical Data

Complete model	DO526
Order number	1SAP240800R0001
Product family	ABB AC500 / S500
Product type	High-current digital output module
Digital outputs	8 transistor outputs in 2 groups of 4 channels
Rated output current	2 A per channel; 8 A maximum per group
Process supply voltage	24 V DC via UP, UP3 and UP4
Current consumption	Approx. 2 mA from the CPU or interface supply; 20 mA plus 1.5 mA per output from UP; 0.01 A plus load from UP3 or UP4
Output protection	No internal short-circuit or overload protection; external protection is required
Required terminal unit	TU542
Dimensions	Approx. 67.5 x 135 x 84.5 mm (W x H x D) assembled with S500 terminal unit
Weight	Approx. 135 g without terminal unit
Maximum power dissipation	6 W
Mounting	Horizontal; vertical with output-load derating
Operating temperature	0 to 60 C horizontal; 0 to 40 C vertical
Storage temperature	-40 to 70 C
Ingress protection	IP20
Maximum cable length	1000 m shielded; 600 m unshielded

Inquiry

CONTACT

STELLA

Email Inquiry [email protected]

WhatsApp +86 18159889985

I/O Functions

High-current outputs

Eight non-latching transistor outputs are divided into two groups of four channels. Each channel is rated at 2 A with a group maximum of 8 A.

Group isolation

The module and the two output groups are galvanically isolated, with separate UP3/ZP3 and UP4/ZP4 field supplies.

Status indication

Eight yellow output LEDs, three green process-supply LEDs and two red error LEDs support commissioning and service checks.

Electrical Data

Supply architecture

The module electronics use the I/O bus and UP supply. The O0 to O3 group uses UP3/ZP3, while O4 to O7 uses UP4/ZP4.

Load characteristics

Lamp loads are rated up to 48 W. ABB specifies up to 2 Hz switching for inductive loads and up to 11 Hz for lamp loads.

External protection

The outputs have no internal short-circuit, overload or current-limiting function. External protection must be engineered for the connected loads.

Installation

TU542 terminal unit

DO526 plugs into the TU542 spring-terminal I/O unit, which provides the 40 field terminals and the separate group supply connections.

System integration

Use as a centralized AC500 expansion module or a decentralized S500 module behind a supported communication interface.

Service replacement

Field wiring remains on the terminal unit, allowing the I/O module to be replaced without rewiring the connected terminals.

Environment

Enclosure requirement

IP20 equipment is intended for a suitable control enclosure with grounded mounting and adequate ventilation.

Temperature limits

Horizontal operation is specified from 0 to 60 C. Vertical mounting is limited to 0 to 40 C with output-load derating.

Safe installation

Remove all supply and process voltages before inserting, removing or wiring the module, and include the process supply in the grounding concept.

FAQ

Q1. How can the exact quoted DO526 be verified?

Confirm model DO526 and ABB order number 1SAP240800R0001 on the nameplate, packaging and quotation. The XC version uses a different order number.

Q2. How can New, Used and Refurbished condition be distinguished?

Request close-up photos of the ABB label, index, housing, connector contacts and terminal-unit interface. Mounting wear, contact marks or replacement labels can indicate prior use or repair.

Q3. How should supplier legitimacy be checked?

Verify the company registration, physical address, bank beneficiary and traceable transaction history, and require a signed quotation naming DO526 and 1SAP240800R0001.

Q4. Which engineering points must be checked before purchase?

Verify eight 24 V DC transistor outputs, 2 A per channel, two isolated groups, TU542 compatibility, separate UP3 and UP4 supplies, external protection and load switching limits.

Q5. What evidence should be obtained before payment?

Request dated photos or video showing the full ABB label, order number, production markings, housing condition, terminal-unit interface and any included TU542 accessories.

Q6. Can DO524 or DO526-XC be substituted automatically?

No. DO524 has 32 lower-current outputs, while DO526-XC has a different order number and environmental construction. Any substitution requires electrical, mechanical and environmental review.

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