Description
The National Instruments SCC-CTR01 Isolated Counter/Timer Module, with Part Number 779474-01, is capable of handling input voltages up to 48 VDC and provides robust isolation of 60 VDC continuous between input-to-output, input-to-input, and input-to-PC ground. To operate effectively, it requires an appropriate cable, an SCC-2345 Carrier, and a compatible multifunction I/O module or device, allowing up to two SCC-CTR01 units per carrier.
Designed with safety in mind, the module features short circuit protection that automatically shuts off the output if the current exceeds the typical 800 mA or maximum 1.1 A, as well as overvoltage protection that safeguards against up to ±60 VDC between Vss and Vdd, and the output and Vss. It supports two input channels and can handle a maximum input frequency of 400 kHz and a maximum input pulse width of 1 µs.
With an ON voltage of 2.5 V typical and 4.1 V guaranteed, and an OFF voltage of 0.8 V guaranteed, the SCC-CTR01 ensures reliable operation with an ON state current of 6 mA typical. These specifications highlight the module’s capability to provide precise and isolated timing and counting functions in a variety of industrial and laboratory applications.
| Specification | Details |
|---|---|
| Part Number | 779474-01 |
| Product Name | National Instruments SCC-CTR01 Isolated Counter/Timer Module |
| Input Voltage Range | Up to 48 VDC |
| Isolation | 60 VDC continuous input-to-output, input-to-input, and input-to-PC ground |
| Required Components | Appropriate cable, SCC-2345 Carrier, and a multifunction I/O module or device |
| Maximum Units per Carrier | Two SCC-CTR01 units |
| Short Circuit Protection | Automatically turns off output if current exceeds 800 mA (typical), 1.1 A (max) |
| Overvoltage Protection | Up to ±60 VDC between Vss and Vdd and the output and Vss |
| Input Channels | 2 |
| Maximum Input Frequency | 400 kHz |
| Maximum Input Pulse Width | 1 µs |
| ON Voltage | 2.5 V typical, 4.1 V guaranteed |
| OFF Voltage | 0.8 V guaranteed |
| ON State Current | 6 mA typical |
Q1: What specific carrier is required for the National Instruments SCC-CTR01 Isolated Counter/Timer Module to operate effectively, and how many SCC-CTR01 units can be accommodated per carrier?
A1: The National Instruments SCC-CTR01 Isolated Counter/Timer Module can handle input voltages up to 48 VDC and provides robust isolation of 60 VDC continuous between input-to-output, input-to-input, and input-to-PC ground.
Q2: What are the voltage thresholds for the ON and OFF states of the National Instruments SCC-CTR01 Isolated Counter/Timer Module, and how do these specifications contribute to its reliability in industrial and laboratory applications?
A2: The National Instruments SCC-CTR01 Isolated Counter/Timer Module offers electrical isolation of 60 VDC continuous between input-to-output, input-to-input, and input-to-PC ground, can handle input voltages up to 48 VDC, and for its operation, it requires an SCC-2345 Carrier, an appropriate cable, and a compatible multifunction I/O module or device, with the capacity to accommodate up to two SCC-CTR01 units per carrier.
Q3: What is the importance of the short circuit and overvoltage protection features in the National Instruments SCC-CTR01 Isolated Counter/Timer Module, and how do they contribute to its safe operation in industrial and laboratory settings?
A3: The voltage thresholds for the ON state of the National Instruments SCC-CTR01 Isolated Counter/Timer Module are 2.5 V typical and 4.1 V guaranteed, while the OFF voltage is guaranteed at 0.8 V; these specifications ensure reliable operation by providing clear and consistent switching points which are crucial for accurate timing and counting functions in industrial and laboratory environments, where precise control and measurement are necessary.
Q4: What are the electrical isolation specifications and input voltage handling capabilities of the National Instruments SCC-CTR01 Isolated Counter/Timer Module, and what additional components are required for its operation?
A4: The short circuit and overvoltage protection features in the National Instruments SCC-CTR01 Isolated Counter/Timer Module are crucial for ensuring safe operation, as they prevent damage to the module and connected equipment in the event of excessive current or voltage; the short circuit protection automatically cuts off the output if the current exceeds set limits, while the overvoltage protection defends against voltage spikes, thereby contributing to a safer and more reliable performance in industrial and laboratory environments where such events can be common.
Q5: What are the voltage ratings for both the input and the isolation provided by the National Instruments SCC-CTR01 Isolated Counter/Timer Module?
A5: The National Instruments SCC-CTR01 Isolated Counter/Timer Module requires an SCC-2345 Carrier to operate effectively, and each carrier can accommodate up to two SCC-CTR01 units.
