National Instruments SLSC-12251 Manuale utente

USER MANUAL

SLSC-12251 and SLSC-12252

Fault Insertion Unit, 16 CH, 8 Amps and 8 CH, 30 Amps

SLSC-12251

16 Ch FIU

100 Vpk, 8 Arms MAX

J1: DUT (0-15) J2: LOAD (0-15)

SLSC-12252

8 Ch FIU

100 Vpk, 30 Arms MAX

J1: DUT (0-7) J2: LOAD (0-7)

Contents

Overview...................................................................................................................................2

Safety Guidelines...................................................................................................................... 3

Safety Voltages..................................................................................................................3

EMC Guidelines........................................................................................................................4

Environmental Characteristics.................................................................................................. 4

Installing the SLSC-12251/12252 and RTI-12306................................................................... 5

Getting Started with Software...................................................................................................6

I/O Organization........................................................................................................................6

Properties.................................................................................................................................. 8

Fault Monitoring and Identification........................................................................................ 11

Measuring the Current............................................................................................................ 12

Measuring the Temperature.....................................................................................................12

Switch Control........................................................................................................................ 13

Calibration...............................................................................................................................13

Driving Inductive Loads......................................................................................................... 14

Pinouts.....................................................................................................................................16

Accessories..............................................................................................................................18

RTI-12306....................................................................................................................... 18

Terminal Blocks.............................................................................................................. 19

Overview

This document contains information about the SLSC-12251 (16 channel, 8 amperes) and

SLSC-12252 (8 channel, 30 amperes) Fault Insertion Units (FIU). The SLSC-12251 and

SLSC-12252 are switch matrices with current monitoring, which allows for connections from

each channel to any of the following: Bus A, Bus B, a load, or a paired channel. These devices

also provide a voltage that is proportional to the current through the channel. This voltage can

be measured with another device.

Driver Support

Earliest driver support version for the SLSC-12251 and SLSC-12252.

Table 1. SLSC-12251 and SLSC-12252 Driver Support

Driver Earliest Version Support

NI-SLSC 18.5

Cables and Accessories

The following table lists cables and accessories available for your SLSC device. For a

complete list of accessories and ordering information, refer to ni.com.

Table 2. SLSC-12251 and SLSC-12252 Cables and Accessories

Cable/Accessory Compatibility Part Number

RTI-12306 SLSC-12251 and SLSC-12252 785378-01

TB-12396 SLSC-12251 786640-01

TB-12397 SLSC-12251 (<33 Vdc) 786639-01

TB-12398 SLSC-12252 786638-01

2| ni.com | SLSC-12251 and SLSC-12252 User Manual

Table 2. SLSC-12251 and SLSC-12252 Cables and Accessories (Continued)

Cable/Accessory Compatibility Part Number

TB-12399 SLSC-12252 (<33 Vdc) 786446-01

SP18M-SP18F Cable SLSC-12251 147945-01

SP8M-SP8F Cable SLSC-12252 148299-01

Safety Guidelines

Caution Observe all instructions and cautions in the user documentation. Using

the model in a manner not specified can damage the model and compromise the

built-in safety protection. Return damaged models to NI for repair.

Safety Voltages

Connect only voltages that are below these limits.

Channel-to-channel isolation

Continuous working voltage1100 V peak

Channel-to-earth isolation

Continuous working voltage 100 V peak

Transient overvoltage2920 V peak

Caution If you are using the SLSC-12251/12252 with voltages greater than 60

Vdc, the SLSC chassis must be made touch safe by panel mounting it in a closed

rack to prevent user access to the rear of the device.

These test and measurement circuits are rated for measurements performed on circuits not

directly connected to the electrical distribution system referred to as MAINS.

MAINS is a hazardous live electrical supply system to which equipment is designed to be

connected to for the purpose of powering equipment. This product is rated 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.

1Working voltage rating is the highest RMS value of the AC or DC voltage across the insulation that

can continuously occur when the equipment is supplied at rated voltage.

2The short duration overvoltage of a few milliseconds or less, oscillatory or non-oscillatory, usually

highly damped.

SLSC-12251 and SLSC-12252 User Manual | © National Instruments | 3

EMC Guidelines

This product was tested and complies with the regulatory requirements and limits for

electromagnetic compatibility (EMC) stated in the product specifications. These requirements

and limits provide reasonable protection against harmful interference when the product is

operated in the intended operational electromagnetic environment.

This product is intended for use in industrial locations. However, harmful interference may

occur in some installations, when the product is connected to a peripheral device or test object,

or if the product is used in residential or commercial areas. To minimize interference with

radio and television reception and prevent unacceptable performance degradation, install and

use this product in strict accordance with the instructions in the product documentation.

Furthermore, any changes or modifications to the product not expressly approved by National

Instruments could void your authority to operate it under your local regulatory rules.

Notice To ensure the specified EMC performance, operate this product only with

shielded cables and accessories.

Notice To ensure the specified EMC performance, the length of all I/O cables must

be no longer than 3 m (10 ft).

Environmental Characteristics

Temperature and Humidity

Operating temperature 0 °C to 40 °C3

Storage temperature range -40 °C to 85 °C

Operating relative humidity range 10% to 90%, noncondensing

Storage relative humidity range 5% to 95%, noncondensing

Pollution Degree 2

Maximum altitude 2,000 m (800 mbar) (at 25 °C ambient)

Shock and Vibration

Operating shock 30 g peak, half-sine, 11 ms pulse

Operating vibration, random 5 Hz to 500 Hz, 0.3 grms

Non-operating vibration, random 5 Hz to 500 Hz, 2.4 grms

3The chassis internal ambient temperature may reach 85 °C with all slots at the maximum allowed

power dissipation. In the SLSC-12001 chassis this corresponds to an external ambient of 40 °C.

4| ni.com | SLSC-12251 and SLSC-12252 User Manual

Installing the SLSC-12251/12252 and

RTI-12306

Figure 1. Installing the RTI-12306 into the SLSC Chassis

Caution Do not touch the contacts or remove the I/O boards or cables while the

system is energized.

Note Install the SLSC-12251/12252 module and its corresponding RTI-12306 in

the chassis at the same time to ensure proper mating alignment. Complete the

following procedure to ensure proper installation of the module and RTI-12306.

1. Power off the main DC power source or disconnect the power source from the chassis

before installing any modules or RTIs.

2. Ensure that the chassis is powered off. The POWER LED should be off. If the POWER

LED is not off, do not proceed until it is off.

Notice The SLSC chassis and the SLSC-12251/12252 do not support hot

plug-in. The entire chassis must be powered off when a module is inserted or

removed.

3. Loosen the screws on the upper rear panel of the chassis.

SLSC-12251 and SLSC-12252 User Manual | © National Instruments | 5

4. Position the RTI-12306 at the desired slot and insert the securing screws, but do not fully

tighten them.

5. Insert an SLSC-12251/12252 module into the same slot as its corresponding RTI-12306

while firmly holding the RTI-12306 in place until the RTI-12306 is firmly connected to

the module.

6. Repeat steps 4 and 5 for all required RTIs.

7. Fully tighten the screws for all RTIs and the upper rear panel of the chassis.

Note Waiting until all RTIs and modules are installed to fully tighten the

screws ensures proper alignment for future connections between modules and

RTIs.

8. Fully tighten the two module mounting screws on each newly installed module.

9. Power on the SLSC chassis.

Getting Started with Software

Use the following three examples to familiarize yourself with the NI-SLSC API. These

examples can be found at file path <LabVIEW installation path>\examples\SLSC

\Example Modules\4 or in Example Finder: Example Finder>>SLSC>>NI

Module Examples.

SLSC-12251 & 12252 FIU Module Configuration.vi

This VI demonstrates how to use the NI-SLSC API to configure the switches of the

SLSC-12251 and SLSC-12252 FIU modules.

SLSC-12251 & 12252 FIU Module Fault Monitor.vi

This VI demonstrates how to use the NI-SLSC API to find specific fault locations on the

SLSC-12251 and SLSC-12252 FIU modules when a fault occurs.

SLSC-12251 & 12252 FIU Module Current Sensing.vi

Use this conceptual example to integrate current sensing functionality into your own system.

Note To use this VI you must connect a voltage measurement device to the RTI

that is attached to the module.

I/O Organization

DUT connector J1 is the input connection to each channel. LOAD connector J2 is the output

connection to each channel. Bus A and Bus B are common connections available to all

channels through the RTI-12306.

4A common installation path for the 32-bit version of LabVIEW is C:\Program Files

(x86)\National Instruments\LabVIEW xxxx\examples\SLSC\Example Modules

6| ni.com | SLSC-12251 and SLSC-12252 User Manual

Each switch is organized into two physical channels, Channel_n and ChannelPair_n, where the

range of n is defined in the following table.

Table 3. Range of Channel Index n

Physical Channel Connections SLSC-12251 SLSC-12252

Channel_n DUTn to LOADn, Bus A, or Bus B 0:15 0:7

ChannelPair_n DUTn to DUTn+1, where n is even 0:7 0:3

Figure 2. Channel Connection Pairs

Current Sense (to RTI)

DUT n

(0, 2, 4, 6...)

Current Sense (to RTI)

DUT n + 1

(1, 3, 5, 7...)

LOAD n

LOAD n + 1

Bus BBus A

Note All switches are open during power-up and after the module is reset.

SLSC-12251 and SLSC-12252 User Manual | © National Instruments | 7

Properties

Table 4. Fault Monitoring Properties

Property Name Data

Type

Property

Type

Description

NI.FIU.BoardFault Boolean Device True when there is any

fault on the board.

NI.FIU.BoardFault.

BoardOverTemperature

UInt32 Device Starting with the LSB,

each bit represents one of

the board's 4 quadrant

digital temperature

sensors, true when that

sensor exceeds the high

temperature digital

setpoint.

NI.FIU.BoardFault.

OverTemperatureOnChannel

UInt32 Device Starting with the LSB,

each bit represents a

channel, true when that

channel's analog

temperature sensors

exceed the high

temperature analog

transition range.

NI.FIU.BoardFault.

OverTemperatureOnChannelToChannel

UInt32 Device Starting with the LSB,

each bit represents a

channel pair, true when

that channel pair's analog

temperature sensor

exceeds the high

temperature analog

transition range.

NI.FIU.BoardFault.OvercurrentOnBusA Boolean Device True when Bus A

exceeds the Bus High

Current Limit for longer

than its delay time.

NI.FIU.BoardFault.OvercurrentOnBusB Boolean Device True when Bus B

exceeds the Bus High

Current Limit for longer

than its delay time.

8| ni.com | SLSC-12251 and SLSC-12252 User Manual

Table 4. Fault Monitoring Properties (Continued)

Property Name Data

Type

Property

Type

Description

NI.FIU.BoardFault.OvercurrentHigh UInt32 Device Starting with the LSB,

each bit represents a

DUT channel, true when

that DUT channel

exceeds the DUT High

Current Limit for longer

than its delay time.

NI.FIU.BoardFault.OvercurrentLow UInt32 Device Starting with the LSB,

each bit represents a

DUT channel, true when

that DUT channel

exceeds the DUT Low

Current Limit for longer

than its delay time.

Table 5. Measurement Properties

Property Name Data

Type

Property

Type

Description

NI.FIU.Calibration.Date Double Device Time, in seconds elapsed

since 12:00 a.m., Friday,

January 1, 1904, Universal

Time, of the last calibration

date of the device.

NI.FIU.Calibration.ExpirationDate Double Device Time, in seconds elapsed

since 12:00 a.m., Friday,

January 1, 1904, Universal

Time, the next recommended

calibration date of the device.

NI.FIU.CurrentTransducer.Gain Double Physical

Channel:

Channel_n

The gain used to calculate the

current from the current

transducer, based on the

voltage input.

SLSC-12251 and SLSC-12252 User Manual | © National Instruments | 9

Table 5. Measurement Properties (Continued)

Property Name Data

Type

Property

Type

Description

NI.FIU.CurrentTransducer.Offset Double Physical

Channel:

Channel_n

The offset used to calculate

the current from the current

transducer, based on the

voltage input.

NI.FIU.TemperatureSensorN Double Device Degrees Celsius of the

board's 4 quadrant digital

temperature sensors (0:3).

Table 6. Switch Control Properties

Property Name Data

Type

Property

Type

Description

NI.FIU.Preset.BusSource Int32,

String

Physical

Channel:

Channel_n

Allows pre-setting DUT channel

connectivity to Bus A, Bus B or none.

An Update command is required for the

change to take place.

Enumeration:

0 : "NoBus" :

Channel is not connected to any Bus

1 : "BusA" :

Channel is connected to Bus A

2 : "BusB" :

Channel is connected to Bus B

NI.FIU.Preset.InterChannel Int32,

String

Physical

Channel:

ChannelPair_n

Allows pre-setting DUT channel

connection to its partner channel. An

Update command is required for the

change to take place.

Enumeration:

0 : "IndependentChannels" :

Channel n is not connected to n + 1

1 : "ConnectedChannels" :

Channel n is connected to n + 1

10 | ni.com | SLSC-12251 and SLSC-12252 User Manual

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