ABB DC522, article 1SAP240600R0001, provides 16 configurable digital channels in a two-wire connection scheme. Each channel can be assigned to the application as a 24 V DC input or a transistor output, while the module also supports a fast-counter function on specified channels.

Manufacturer	ABB
Article Number	1SAP240600R0001
Product Family	AC500 S500
Configurable Channels	16 digital inputs/outputs
Connection Method	2-wire
Nominal Signal Voltage	24 V DC
Maximum Output Current	0.5 A per channel
Sensor Supply	24 V DC, maximum 0.5 A total
Fast-Counter Inputs	C8 and C9
Fast-Counter Output	C10
Isolation	Module-wise galvanic isolation
Terminal Units	TU515 or TU516
I/O-Bus Current	Approximately 2 mA
Maximum Unloaded Dissipation	6 W
Product Lifecycle	Active

• Lets the controller project assign each of the 16 points as a digital input or output.
• Uses two-wire field connections for flexible discrete-signal distribution.
• Provides transistor outputs rated up to 0.5 A per configured output.
• Includes fast-counter capability on the ABB-defined channel group.
• Displays channel status, process-supply state and module errors on front LEDs.
• Separates the field section from the internal logic through module-wise galvanic isolation.

• Mounts on ABB TU515 or TU516 terminal units in a supported AC500 S500 station.
• The total output load and sensor-supply demand must remain within the documented module and supply limits.
• When C8 and C9 are used as counter inputs, ABB specifies the documented series-resistor arrangement for connected sensors.
• The standard and XC environmental versions are separate ordering articles.
• Hot-swap work is permitted only under the conditions and procedures defined by ABB for the installed system.

• Use article 1SAP240600R0001 to distinguish the standard DC522 from nearby DC52x variants.
• Export the controller configuration and record the input/output direction of all 16 channels.
• Confirm whether C8, C9 and C10 participate in the fast-counter application before rewiring.
• Check the terminal unit, sensor supply and load protection with power safely removed.
• After replacement, exercise every configured output and validate input and counter diagnostics.

How many configurable channels are available on DC522?

The module has 16 channels that can be configured as 24 V DC inputs or transistor outputs.

What is the output-current rating per DC522 channel?

A configured output is rated for up to 0.5 A, subject to the complete module and supply limits.

Which channels are used for the fast counter?

ABB assigns C8 and C9 as counter inputs and C10 as the associated counter output.

Does DC522 provide a sensor supply?

Yes. The documented sensor supply is 24 V DC with a maximum total current of 0.5 A.

Can DC522 use TU515 and TU516 terminal units?

Yes. Both terminal units are listed for this module.

Is DC522 the same as DC523?

No. DC522 has 16 configurable two-wire channels, while DC523 has 24 configurable one-wire channels and different channel assignments.