K3HB-R datasheet(30/32 Pages) OMRON

30 / 32 page

Digital Indicators

K3HB-R/-P/-C

Common Precautions

■ Precautions

!WARNING

!CAUTION

Precautions for Safe Use

1. Do not use the product in the following locations.

• Locations subject to direct radiant heat from heating equipment

• Locations where the product may come into contact with water

or oil

• Locations subject to direct sunlight

• Locations where dust or corrosive gases (in particular, sulfuric

or ammonia gas) are present

• Locations subject to extreme temperature changes

• Locations where icing or condensation may occur

• Locations subject to excessive shocks or vibration

2. Do not use the product in locations subject to temperatures or

humidity levels outside the specified ranges or in locations prone

to condensation. If the product is installed in a panel, ensure that

the temperature around the product (not the temperature around

the panel) does not go outside the specified range.

3. Provide sufficient space around the product for heat dissipation.

4. Use and store the product within the specified temperature and

humidity ranges. If several products are mounted side-by-side or

arranged in a vertical line, the heat dissipation will cause the

internal temperature of the products to rise, shortening the

service life. If necessary, cool the products using a fan or other

cooling method.

5. The service life of the output relays depends on the switching

capacity and switching conditions. Consider the actual application

conditions and use the product within the rated load and electrical

service life. Using the product beyond its service life may result in

contact welding or burning.

6. Install the product horizontally.

7. Mount to a panel between 1 and 8-mm thick.

8. Use the specified size of crimp terminals (M3, width: 5.8 mm

max.) for wiring. To connect bare wires, AWG22 (cross section:

0.326 mm2) to AWG14 (cross section: 2.081 mm2) to wire the

power supply terminals and AWG28 (cross section: 0.081 mm2)

to AWG16 (cross section: 1.309 mm2) for other terminals. (Length

of exposed wire: 6 to 8 mm)

9. In order to prevent inductive noise, wire the lines connected to the

product separately from power lines carrying high voltages or

currents. Do not wire in parallel with or in the same cable as

power lines. Other measures for reducing noise include running

lines along separate ducts and using shield lines.

10.Ensure that the rated voltage is achieved no longer than 2 s after

turning the power ON.

11.Allow the product to operate without load for at least 15 minutes

after the power is turned ON.

12.Do not install the product near devices generating strong high-

frequency waves or surges. When using a noise filter, check the

voltage and current and install it as close to the product as

possible.

13.Do not use thinner to clean the product. Use commercially

available alcohol.

14.Be sure to confirm the name and polarity for each terminal before

wiring the terminal block and connectors.

15.Use the product within the noted supply voltage and rated load.

16.Do not connect anything to unused terminals.

17.Output turns OFF when the mode is changed or settings are

initialized. Take this into consideration when setting up the control

system.

18.Install an external switch or circuit breaker that complies with

applicable IEC60947-1 and IEC60947-3 requirements and label

them clearly so that the operator can quickly turn OFF the power.

19.Use the specified cables for the communications lines and stay

within the specified DeviceNet communications distances. Refer

to the User's Manual (Cat. No. N129) for details on

communications distance specifications and cables.

Do not touch the terminals while power is being supplied.

Doing so may possibly result in electric shock. Make sure

that the terminal cover is installed before using the

product.

Always provide protective circuits in the network. Without

protective circuits, malfunctions may possibly result in

accidents that cause serious injury or significant property

damage. Provide double or triple safety measures in

external control circuits, such as emergency stop circuits,

interlock circuits, or limit circuits, to ensure safety in the

system if an abnormality occurs due to malfunction of the

product or another external factor affecting the product's

operation.

Do not allow pieces of metal, wire clippings, or fine

metallic shavings or filings from installation to enter the

product. Doing so may occasionally result in minor

electric shock, fire, or malfunction.

Do not use the product in locations where flammable or

explosive gases are present. Doing so may occasionally

result in minor or moderate explosion, causing minor or

moderate injury, or property damage.

Do not attempt to disassemble, repair, or modify the

product. Doing so may occasionally result in minor or

moderate injury due to electric shock.

Do not use the equipment for measurements within

Measurement Categories II, III or IV (according to

IEC61010-1). Doing so may occasionally cause

unexpected operation, resulting in minor or moderate

injury, or damage to the equipment. Use the equipment

for measurements only within the Measurement Category

for which the product is designed.

Perform correct setting of the product according to the

application. Failure to do so may occasionally cause

unexpected operation, resulting in minor or moderate

injury, or damage to the equipment.

Ensure safety in the event of product failure by taking

safety measures, such as installing a separate monitoring

system. Product failure may occasionally prevent

operation of comparative outputs, resulting in damage to

the connected facilities and equipment.

Tighten the screws on the terminal block and the

connector locking screws securely using a tightening

torque within the following ranges. Loose screws may

occasionally cause fire, resulting in minor or moderate

injury, or damage to the equipment.

Terminal block screws: 0.43 to 0.58 N·m

Connector locking screws: 0.18 to 0.22 N·m

Make sure that the product will not be adversely affected

if the DeviceNet cycle time is lengthened as a result of

changing the program with online editing. Extending the

cycle time may cause unexpected operation, occasionally

resulting in minor or moderate injury, or damage to the

equipment.

Before transferring programs to other nodes or changing

I/O memory of other nodes, check the nodes to confirm

safety. Changing the program or I/O memory of other

nodes may occasionally cause unexpected operation,

resulting in minor or moderate injury, or damage to the

equipment.

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