National Instruments NI CB-37F-HVD User manual

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INSTALLATION GUIDE
NI CB-37F-HVD
High-Voltage DIN Rail Screw Terminal Block for Rack Mount Users
This guide describes how to install and use the National Instruments
CB-37F-HVD 37-pin D-SUB high-voltage (150 V) DIN rail terminal
block. The CB-37F-HVD has screw terminals for connecting up to 37 I/O
signals. Use 12–30 AWG wire to connect to the CB-37F-HVD screw
terminals.
Using the Terminal Block Safely with High Voltage
Signals
The CB-37F-HVD is UL recognized. You can use the CB-37F-HVD
terminal block with low-voltage or high-voltage products up to 150 V.
When hazardous voltages (>30 Vrms, 42.4 Vpk, 60 VDC) are present on
any terminal, all terminals must be considered hazardous. Ensure that
external wiring or any circuits connected to the device are properly
insulated from human contact.
Caution Failure to adhere to the following precautionary steps when connecting the cable
to a high-voltage NI device can result in electrical shock or death.
Caution Before you begin installation, ensure that no high-voltage signals are connected
to your accessory.
Caution Signal connections should be made by a qualified technician or service personnel.
Caution When using this product with UL listed high-voltage PCI or PXI devices, the
connecting cable must be keyed for hazardous voltage (>30 Vrms, 42.4 Vpk, 60 VDC)
using the 37-Pin High-Voltage Accessory Kit. This kit is provided with the PCI/PXI device
or can be ordered separately for replacement (part number 779445-01). Refer to the 37-Pin
High-Voltage Accessory Safety Kit Installation Guide provided in the kit for installation
instructions.
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NI CB-37F-HVD Installation Guide 2 ni.com
When using the CB-37F-HVD with hazardous voltages (>30 Vrms,
42.4 Vpk, 60 VDC), it is required that all signal wires must be strain
relieved, and the CB-37F-HVD must be placed in a UL listed,
suitably-rated NEMA or IP enclosure, shown in Figure 1, which is
grounded to a safety earth ground. The enclosure must be entirely enclosed
and none of the parts should be accessible to the user when the system is
running.
Figure 1. CB-37F-HVD and UL Listed Enclosure
What You Need to Get Started
The following items are necessary for setting up and using the
CB-37F-HVD terminal block:
❑Hardware
– CB-37F-HVD terminal block
–DAQdevice
– SH37F-37M-x37-pin female-to-male shielded I/O cable
or other 37-pin cable rated to 150 V
– Cabling and sensors as required for your application
– 37-Pin High-Voltage Accessory Safety Kit (supplied with
high-voltage devices)
– DIN Rail (and DIN rail mounting kit)
– Zip ties
– UL listed industrial enclosure1, electrical cabinet, or rack-mount
cabinet
1 National Instruments sells two UL listed industrial enclosures: FP-ENC1 industrial enclosure with polycarbonate window
(part number 777596-01) and NI FP-ENC1 industrial enclosure with solid metal door (part number 777596-02).
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©National Instruments Corporation 3 NI CB-37F-HVD Installation Guide
❑Documentation (available at ni.com/manuals)
–Read Me First: Safety and Radio-Frequency Interference
–DAQ Getting Started Guide
– Documentation for your DAQ device
–37-Pin High-Voltage Accessory Safety Kit Installation Guide
(supplied with the 37-Pin High-Voltage Accessory Safety Kit)
❑Tools
– 1/8 in. flathead screwdriver
– Wire insulation stripper
Connecting the Signals
To connect signals to the CB-37F-HVD terminal block, refer to Figure 2
while completing the following steps.
Note Refer to the Read Me First: Safety and Radio-Frequency Interference document
before removing equipment covers or connecting or disconnecting any signal wires.
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NI CB-37F-HVD Installation Guide 4 ni.com
Figure 2. CB-37F-HVD Parts Locator Diagram
1. Ensure no voltage is present on the signal wires.
2. Mount the CB-37F-HVD onto the DIN rail.
3. Prepare the 12–30 AWG signal wire by stripping the insulation no
more than 4.0 mm (0.16 in.).
4. Insert the stripped ends of the signal wires into the screw terminals.
Make sure no bare wire extends from the terminal.
5. Tighten the screws to a torque of 0.3 N · m (2.7 lb - in.).
6. Tighten the zip ties securely around the signal wires for strain relief.
For additional strain relief, you should securely tighten additional zip
ties around signal wires from the top row of screw terminals.
Note To replace the zip ties, remove one of the end pieces from the CB-37F-HVD. Slide
the PCB out and guide the zip tie through the holes on the PCB. Replace the PCB, end
piece, and screws.
1 D-SUB Connector
2 Screw Terminals
3ZipTies
4 End Piece
5 Chassis Gnd ( )
6 Signal Wires
7Screw
8 DIN Rail Clip
9PCB
7
4
7
9
4
3
5
2
1
8
6
3
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©National Instruments Corporation 5 NI CB-37F-HVD Installation Guide
Cabling to the Terminal Block
You must install the DAQ device in a PC or PXI chassis, as described in the
DAQ Getting Started Guide, before cabling the device to the terminal
block. Complete the following steps to connect the terminal block to the
DAQ device D-SUB connector.
1. Connect the DAQ device to the terminal block with the 37-pin cable.
2. Tighten the two cable thumbscrews to a torque of 0.3 N · m
(2.7 lb - in.) on each end of the cable.
Specifications
All specifications are typical at 25 °C unless otherwise specified.
Electrical
Coupling................................................. DC1
Terminal wire size.................................. 12 to 30 AWG
Field-wiring connectors
Signal screw terminals .................... 37
Earth-ground screw terminal .......... 1 ( , for shielding only,
not a safety ground)
Strain relief ..................................... Zip ties through holes in PCB
Maximum current................................... 2 A per conductor
Mechanical
Dimensions............................................. 13.75 cm ×9.0 cm ×6.5 cm
(5.5 in. ×3.55 in. ×2.5 in.)
Weight.................................................... 210 g (7.5 oz)
Maximum Voltage
Maximum voltage refers to the signal voltage plus the common-mode
voltage.
Channel-to-ground ................................. 150 V
1 In instrumentation terminology, DC coupling means that both DC and AC signals are passed.
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NI CB-37F-HVD Installation Guide 6 ni.com
Environmental
Operating temperature ............................0 to 50 °C
Storage temperature................................–20 to 70 °C
Humidity.................................................10 to 90% RH, noncondensing
Maximum altitude...................................2,000 meters
Pollution Degree (indoor use only) ........2
Safety
The CB-37F-HVD terminal block is UL recognized and meets the
requirements of the following standards for industrial control:
• EN 50178
•UL508
• CAN/CSA-C22.2 No. 14
Note For the UL certification, refer to the product label or visit
ni.com/certification, search by model number or product line, and click the
appropriate link in the Certification column.
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Refer to the Terms of Use section on ni.com/legal for more information about National
Instruments trademarks. Other product and company names mentioned herein are trademarks or trade
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© 2005 National Instruments Corporation. All rights reserved. 371716A-01 Oct05
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Artisan Technology Group is your source for quality
new and certied-used/pre-owned equipment
• FAST SHIPPING AND
DELIVERY
• TENS OF THOUSANDS OF
IN-STOCK ITEMS
• EQUIPMENT DEMOS
• HUNDREDS OF
MANUFACTURERS
SUPPORTED
• LEASING/MONTHLY
RENTALS
• ITAR CERTIFIED
SECURE ASSET SOLUTIONS
SERVICE CENTER REPAIRS
Experienced engineers and technicians on staff
at our full-service, in-house repair center
WE BUY USED EQUIPMENT
Sell your excess, underutilized, and idle used equipment
We also offer credit for buy-backs and trade-ins
www.artisantg.com/WeBuyEquipment
REMOTE INSPECTION
Remotely inspect equipment before purchasing with
our interactive website at www.instraview.com
LOOKING FOR MORE INFORMATION?
Visit us on the web at www.artisantg.com for more
information on price quotations, drivers, technical
specications, manuals, and documentation
Contact us: (888) 88-SOURCE | [e-mail] | www.artisantg.com
SM
View
Instra