NI-9157/9159 Explosive Atmospheres User Guide

Product Descriptions

NI-9157: 14-Slot, Virtex-5 LX85 FPGA, MXI-Express CompactRIO Chassis

NI-9159: 14-Slot, Virtex-5 LX110 FPGA, MXI-Express CompactRIO Chassis

Physical Characteristics

Weight

NI-9157

2,231 g (78.7 oz)

NI-9159

2,231 g (78.7 oz)

Dimensions

Visit ni.com/dimensions and search by model number.

Screw-terminal wiring

Gauge

0.2 mm2 to 2.1 mm2 (24 AWG to 14 AWG) copper conductor wire

Wire strip length

6 mm (0.24 in.) of insulation stripped from the end

Temperature rating

85 °C

Torque for screw terminals

0.20 N · m to 0.25 N · m (1.8 lb · in. to 2.2 lb · in.)

Wires per screw terminal

One wire per screw terminal

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.3 N · m to 0.4 N · m (2.7 lb · in. to 3.5 lb · in.)

Note Cabling must be installed, routed, and connected to other products per local requirements for use in explosive atmospheres.

Environmental

Operating temperature

0 °C to 55 °C

Storage temperature

-40 °C to 85 °C

Notice Failure to follow the mounting instructions in the user manual can cause temperature derating.

Ingress protection

IP40

Operating humidity

10% RH to 90% RH, noncondensing

Storage humidity

5% RH to 95% RH, noncondensing

Pollution degree

2

Maximum altitude

2,000 m

Indoor use only.

Hazardous Locations

Explosive atmospheres rating

Ex ec IIC T4 Gc

CCC certificate number

2021312310000310

Safety Guidelines

Operate the product only as described in this document.

Caution This icon denotes a caution, which advises you to consult documentation where this symbol is marked.
Caution Do not operate this product in a manner not specified in this document. Product misuse can result in a hazard. You can compromise the safety protection built into the product if the product is damaged in any way. If the product is damaged, return it to NI for repair.

Safety Guidelines for Hazardous Locations

The NI-9157/9159 have been evaluated as Ex ec IIC T4 Gc equipment and are CCC certified. Each product is suitable for use within ambient temperatures of 0 °C ≤ Ta ≤ 55 °C in either nonhazardous locations or Zone 2 hazardous locations.

Follow these guidelines if you are installing the product in a potentially explosive environment. Not following these guidelines may result in serious injury or death.

Caution Do not disconnect I/O-side wires or connectors unless power has been switched off or the area is known to be nonhazardous.
Caution Do not remove modules unless power has been switched off or the area is known to be nonhazardous.
Caution Substitution of components may impair suitability for Zone 2.
Caution Transient protection shall be provided that is set at a level not exceeding 140% of the peak rated voltage value of 85 V at the supply terminals to the equipment.
Caution The system shall only be used in an area of not more than Pollution Degree 2, as defined in IEC/EN 60664-1.
Caution The system shall be mounted in a CCC-certified enclosure with a minimum ingress protection rating of at least IP54 as defined in GB/T3836.1.
Caution The enclosure must have a door or cover accessible only by the use of a tool.
Caution Do not disconnect the power supply wires and connectors from the product unless power has been switched off.

Safety Voltages

Connect only voltages that are below these limits.

V terminal to C terminal

30 V DC maximum, Measurement Category I

Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

Power Requirements

NI-9157

Voltage requirement

9 V to 30 V

Recommended power supply

55 W, 30 V DC maximum

Chassis power consumption/dissipation

With no I/O modules

14.4 W maximum

With 14 I/O modules

30.7 W maximum

NI-9159

Voltage requirement

90 V to 30 V

Recommended power supply

55 W, 30 V DC maximum

Chassis power consumption/dissipation

With no I/O modules

16.25 W maximum

With 14 I/O modules

32.7 W maximum

Installing C Series Modules

Verify that power is not connected to the I/O connector(s) on the C Series module.

Removing C Series Modules

Verify that power is not connected to the I/O connector(s) on the C Series module before you remove a module from the chassis.

Product Certifications and Declarations

To obtain product certifications and the DoC for NI products, visit ni.com/product-certifications, search by model number, and click the appropriate link.

Worldwide Support and Services

NI corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas, 78759-3504, USA.