NI-9351 Specifications
- Updated2023-07-10
- 10 minute(s) read
NI-9351 Specifications
Definitions
Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty.
Characteristics describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.
- Typical specifications describe the performance met by a majority of models.
- Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.
Specifications are Typical unless otherwise noted.
Conditions
Specifications are valid for the range -40 °C to 70 °C unless otherwise noted.
Environmental Characteristics
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Ingress protection | IP40 | ||||||||||||
Pollution Degree | 2 | ||||||||||||
Maximum altitude | 5,000 m | ||||||||||||
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To meet these shock and vibration specifications, you must panel mount the system.
Functional Safety Standards
This product is designed for Functional Safety applications and meets the following standards:
- IEC/EN 61508:2010; Functional Safety of Electrical Systems, Second Edition
- IEC/EN 62061; Safety of Machinery
- IEC/EN 61511; Safety Instrumented Systems for the Process Industry Sector
Functional Safety Certification
Safety Integrity Level | SIL3 (IEC 61508) | ||||||
Hardware fault tolerance | 0 | ||||||
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Failure Categories | λSD | λSU | λDD | λDU |
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Common, sea level | 419 | 10 | 282 | 10 |
Common, 2,000 m | 858 | 11 | 720 | 10 |
Common, 5,000 m | 4,100 | 14 | 3,970 | 13 |
AI common | 70.1 | 0.9 | 110 | 1.4 |
AI per channel | 0.8 | 0.01 | 1.4 | 0.3 |
DI common | 7.0 | 0.1 | 19 | 0.2 |
DI per channel | 14 | 2.2 | 15 | 0.5 |
DO per channel | 39 | 0.7 | 0.2 | 0.2 |
Input/Output Characteristics
Number of channels | 4 analog input 4 digital input 4 digital output |
Analog Input
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ADC resolution | 16 bit | ||||||
Type of ADC | Successive approximation register (SAR) | ||||||
Sampling mode | Scanned | ||||||
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Calibrated Measurement Conditions | Percent of Reading (Gain Error) | Percent of Range[2]2 Range equals 24 mA(Offset Error) |
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Typical (25 °C ± 5 °C) | ±0.12% | ±0.03% |
Maximum (-40 °C to 70 °C, 2 years) | ±0.47% | ±0.13% |
Typical (-40 °C to 70 °C, 20 years) | ±0.90% | ±0.20% |
Sample rate | 1 kS/s |
Input noise | 400 nA RMS |
Overvoltage protection, channel-to-COM | 20 V, single-channel, up to 55 °C |
Fault voltage derating | Refer to the following figure. |
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Input bandwidth (-3 dB) | 12.4 kHz | ||||||
Input impedance | 82 Ω, typical 200 Ω, maximum |
Digital Input
Input type | Sinking | ||||||||||||||||||
Input voltage range | 0 V to 30 V | ||||||||||||||||||
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Digital input sinking current | Refer to the following figure. |
Input voltage protection | ±30 V DC |
Digital Output
Output type | Sourcing |
Minimum ON time | 190 μs |
Minimum OFF time | 170 μs |
Continuous output current (per channel) | 250 mA, maximum |
ON state voltage drop (Vsup pin to DO pin) | 45 mV + (channel output current) × 0.3 Ω, maximum |
OFF state leakage current | 0.2 mA, maximum |
Required external load | 50 kΩ, maximum |
Load capacitance | 0.5 μF, maximum | ||||||||
Cable length | 200 m, maximum | ||||||||
Open circuit detection | 11 mA 2 mA, minimum 20 mA, maximum | ||||||||
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Power Requirements
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External Power Supply Requirements
Voltage input range | 19 V DC to 30 V DC |
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Physical Characteristics
If you need to clean the module, wipe it with a dry towel.
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Weight[3]3 Includes 26-pin spring terminal and connector backshell. | 210 g (7.4 oz) |
Safety Response Times
Total C Series Functional Safety Module Response Time
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Application processing time | 60 µs | ||||||||
Output signal response time[4]4 Includes delay time from a change in safety processing logic output to the digital output turning off. This does not include the discharge time for the output load. | 5 μs, maximum |
Digital Input Signal Response Time
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Input discharge time (1 to 0) | 40 µs |
Analog Input Signal Response Time
Single input | 2 ms |
Dual input (1oo2) | 2 ms |
Triple input (2oo3) | 2 ms |
Automatic Self-Diagnostics Test Interval
Temperature fault | 1.01 s |
Analog input self-diagnostic faults | 2 ms |
Other automatic self-diagnostic faults | 160 µs |
Power down response time[5]5 Includes delay time from a change in safety processing logic output until power down activates. This does not include the discharge time for the internal 40 µF bulk capacitance or the output load. | 435 µs |
User-Configurable Diagnostic Response Time
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Safety Voltages
Connect only voltages that are within the following limits:
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Measurement Category
Measurement Category
I
Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live electrical supply system that powers equipment. This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics.
Calibration
Calibration interval | 1 year |
1 1 FIT = 1 failure/109 hours
2 Range equals 24 mA
3 Includes 26-pin spring terminal and connector backshell.
4 Includes delay time from a change in safety processing logic output to the digital output turning off. This does not include the discharge time for the output load.
5 Includes delay time from a change in safety processing logic output until power down activates. This does not include the discharge time for the internal 40 µF bulk capacitance or the output load.
6 Channels include Vsup, AI Vsup, and COM.
In This Section
- Definitions
- Conditions
- Environmental Characteristics
- Functional Safety Standards
- Functional Safety Certification
- Input/Output Characteristics
- Analog Input
- Digital Input
- Digital Output
- Power Requirements
- External Power Supply Requirements
- Physical Characteristics
- Safety Response Times
- Safety Voltages
- Measurement Category
- Calibration