PCI-6528 48-Channel Isolated Digital I/O Device
Земля PCI-6528 is an industrial PCI digital I/O device combining 24 isolated digital inputs with 24 isolated digital outputs. Its channel-to-channel isolation allows separate field signals to use different reference potentials within the specified working-voltage limits.
The input channels accept signals from -60 VDC to 60 VDC, while the output channels operate with external circuits from 0 V to 60 V and support current up to 150 mA per channel, subject to applicable derating limits.
Programmable power-up states, watchdog timers, change detection and digital input filters make the PCI-6528 suitable for demanding manufacturing, machine-control and automated test applications.
Key Features of the PCI-6528
- 48 total industrial digital channels
- 24 isolated digital input channels
- 24 isolated digital output channels
- Channel-to-channel electrical isolation
- -60 VDC to 60 VDC input range
- 0 V to 60 V output range
- Up to 150 mA output current per channel
- Sinking or sourcing input compatibility
- Isolated solid-state output operation
- Programmable input filters
- Digital change detection
- Programmable power-up states
- Digital watchdog protection
- 100-pin SCSI-type connection
- NI-DAQmx compatibility
PCI-6528 Technical Specifications
| Product Model | PCI-6528 |
|---|---|
| Part Number | 778833-01 |
| Product Type | Channel-isolated industrial digital I/O device |
| Шинный интерфейс | PCI |
| Total Digital Channels | 48 |
| Digital Inputs | 24 |
| Digital Outputs | 24 |
| Input Voltage Range | -60 VDC to 60 VDC |
| Диапазон выходного напряжения | 0 V to 60 V |
| Maximum Output Current | 150 mA per channel, subject to derating |
| Изоляция | 60 VDC channel-to-channel isolation |
| Input Filtering | Programmable |
| Change Detection | Supported |
| Power-Up States | Programmable |
| Watchdog Timer | Supported |
| Operating Temperature | 0°C to 55°C |
| Front Connector | 100-pin SCSI-type |
| Software Driver | НИ-DAQmx |
PCI-6528 Part Number and Accessories
| Item | Part Number | Описание |
|---|---|---|
| PCI-6528 | 778833-01 | 24-input, 24-output channel-isolated digital I/O device |
| SH100M-100M Flex Cable | 185095-01 | 1 m shielded 100-pin flex cable |
| R100M-50F-50F Cable | 182762-02 | 2 m ribbon cable splitting the signals into two 50-pin connections |
| SCB-100A | 785024-01 | Shielded 100-pin screw-terminal connector block |
| CB-50 | 776164-90 | DIN-rail-mount 50-pin connector block |
| CB-50LP | 777101-01 | Low-cost unshielded 50-pin connector block |
Channel-to-Channel Isolation
Unlike a bank-isolated device, the PCI-6528 provides isolation between individual field channels. This allows inputs and outputs to operate with separate common references and reduces unwanted current paths between field circuits.
Isolation ratings still impose maximum working-voltage limits. Isolation must not be treated as unlimited protection against hazardous voltage or wiring errors.
24 Isolated Digital Inputs
The input channels can monitor switches, PLC outputs and industrial sensors using different field references. Programmable digital filtering helps reject noise pulses and contact bounce.
Change detection can notify the application when selected inputs transition, improving response to alarms, position signals and operator controls.
24 Isolated Digital Outputs
The isolated outputs can control compatible relays, indicators, valves and other DC loads. Each output uses an external field supply and should be protected against excessive current and inductive transients.
Confirm whether the intended wiring requires sinking or sourcing current and follow the official connection diagram for the specific load arrangement.
Watchdog and Power-Up Protection
Programmable power-up states establish the initial output values during startup. The watchdog can change outputs to predefined expiration states when the host application stops communicating with the device.
PCI-6528 Applications
- Industrial machine monitoring and control
- Automated production testing
- PLC signal interfacing
- Isolated sensor monitoring
- Relay and solenoid control
- Process-control systems
- Ground-loop-sensitive installations
- Burn-in and reliability testing
- Автоматизация производства
- Multivoltage test fixtures
- Alarm and status monitoring
Multivoltage Test Fixtures
Channel-to-channel isolation makes the PCI-6528 useful when the test fixture contains signals referenced to different grounds. Each circuit can remain electrically separated within the specified limits.
Industrial Control Systems
The input channels can monitor equipment states while the output channels control external loads. This combination enables one PCI device to handle both observation and control functions.
PCI-6528 Installation Workflow
Step 1: Document Every Field Circuit
Record the voltage, current, polarity, common reference and load type for each input and output.
Step 2: Install the Device
Power down the computer, follow ESD precautions and install the PCI-6528.
Step 3: Select Connectivity
Choose either a shielded 100-pin terminal solution or a split 50-pin arrangement appropriate for the control cabinet.
Step 4: Wire Inputs and Outputs
Keep channel wiring and reference connections separate when channel-to-channel isolation is required.
Step 5: Configure Protection
Program filters, power-up states and watchdog expiration values before enabling field power.
Step 6: Perform Channel Tests
Test each input and output individually before running the complete automated sequence.
PCI-6528 Troubleshooting
An input does not change state
Check field voltage, polarity, channel reference and filter duration.
An output does not control the load
Verify the external supply, output topology, load current and field wiring.
Several channels fail together
Inspect the cable, connector block and shared external supply. Although channels are isolated, external wiring may still introduce shared failure points.
Outputs overheat or shut down
Reduce load current and simultaneous channel activity. Review the device’s thermal derating requirements.
Noise causes false inputs
Enable digital filtering, use shielded cables and separate low-level input wiring from motor and contactor circuits.
PCI-6528 Comparison
| Модель | Inputs | Outputs | Isolation Type |
|---|---|---|---|
| PCI-6510 | 32 | 0 | Bank isolated |
| PCI-6517 | 0 | 32 | Bank isolated |
| PCI-6521 | 8 | 8 relay | High channel isolation |
| PCI-6528 | 24 | 24 | Channel-to-channel isolated |
The PCI-6528 is suited to applications requiring balanced isolated input and output capacity. The PCI-6521 offers fewer channels but uses electromechanical relay outputs with higher switching ratings.
PCI-6528 Frequently Asked Questions
How many channels does the PCI-6528 provide?
It provides 24 isolated inputs and 24 isolated outputs, for 48 total digital channels.
Are the channels individually isolated?
Yes. The device uses channel-to-channel isolation rather than only bank isolation.
What voltage can the inputs accept?
The specified digital input range is -60 VDC to 60 VDC.
What is the maximum output voltage?
The isolated outputs can operate with external circuits from 0 V to 60 V.
What is the PCI-6528 part number?
The standard part number is 778833-01.
Recommended Related Products
- PCI-6521 Isolated Relay Digital I/O Device
- PCI-6510 Isolated Digital Input Device
- PCI-6517 Industrial Digital Output Device
- PXI-6528 Isolated Digital I/O Module
Request a Quote for the PCI-6528
Contact us for availability, lead time and project pricing for the PCI-6528 channel-isolated digital I/O device. We can also help select compatible cables and terminal blocks.
