Applications

The binary output module 520BOD01 controls 8 binary process signals via relay contacts.

The output signals can be assigned to process functions according to www.abb-drive.com configuration rules.

The module 520BOD01 can process the following types of signals:

– Single or dual command (SCO or DCO), 1-pole or 2-pole outputs, no checksum (n select 1).

– Single or dual commands (SCO or DCO) with 1.5- or 2-pole output, no checksum (1 of n) Single or dual commands (SCO or DCO) with 1.5- or 2-pole output, no checksum (1 of n)

– Adjustment Step Command (RCO), 1 or 2 poles

– Digital Setpoint Command, 8-bit, No Strobe (DSO8)

– Digital setpoint command, 8-bit, no strobe (DSO8) Bit-string output, 1 or 8-bit (BSO1 or BSO8)

Modules allow switching voltages up to 150 V DC or up to 8 A continuous current. 8 A continuous current.

Characteristics

Binary Outputs

The binary outputs are relay contacts.

The 8 outputs are isolated from each other. In addition, they are isolated from the internal electronics by means of an optocoupler.

All 8 relay contacts have independent outputs and there are no common circuits.

The command outputs to the process equipment can be executed either directly or in conjunction with the command output monitoring module.

The Command Output Monitoring Module checks the output circuits (1 out of n times). For more details, refer to the Command Output Monitor data sheet.

The following modules with command output monitoring functions are supported:

– 560CIG10

– 560CID11

– 520CSD01

The 1.5-pole command output can only be used in conjunction with the command output monitor module. When using the 1.5-pole command output

One of the output relays of the 520BOD01 switches the command to the intermediate relay. The process voltage of the intermediate relay is switched by the command output monitoring module.

For bipolar commands, two output relays are required per command.

Before and during command output, the module 520BOD01 performs several command monitoring functions.

These tests ensure correct output. These tests can be further improved with the command output monitoring module.

If a fault is detected by the command monitoring, the command is cancelled.

Power input

The required power supply for the module is provided via the RTU520 I/O bus connector. In addition, 24 VDC (UE) is required (e.g. from the 560PSU40/41).

The UE voltage must be supplied externally and connected to the UE connector.

Input/Output Controller (IOC)

The microcontroller on the module handles all key tasks for the parameterised processing functions. In addition, it communicates interactively with the RTU I/O bus.

All configuration data and processing parameters are loaded by the communication unit via the RTU I/O bus.

The module can be connected to the RTU520 I/O bus by connecting it to an I/O adapter (e.g. 520ADD01) or to the RTU520 communication unit.

The binary output unit can perform the following processing functions for each signal type:

– Control of the command output duration

Command monitoring function:

– Checking of the output relays on the module (m out of 16)

– Monitoring of the output bit pattern by reading back the output status

– Monitoring of the switching voltage (24 V DC coil voltage) before and during output, only with the control module (1 of n)

– Command output duration monitoring

During initialisation and operation, the module performs a series of tests. If a fault occurs, it is reported to the communication unit.

All fault conditions affecting the function of the module are signalled as common faults by means of red LEDs. Module faults are detected by the communication unit.