Idec Eb3n User manual

EB3N Safety Relay Barriers

Build a safety system in an explosive atmosphere.

• Ensures explosion protection safety and machine safety in an explosive

atmosphere.

• Machine safety system can be built in compliance with ISO13849-1 Category

4, Performance level e.

• Safety input devices applicable in any explosive gas and hazardous areas are

available.

• Available with auxiliary inputs (5 points) used to monitor the operating status

of safety input devices.

• A wide variety of Japan TIIS-rated emergency stop switches and interlock

switches are available.

• Global usage

Explosion protection: Global: PTB (IEC Ex), Europe: PTB (ATEX), USA: UL

Japan (TIIS), China (Ex-CCC)

Machine safety: TÜV Rheinland

• No grounding required.

Explosion

Protection

Safety relay barrier [Exia] II C

Switch (EB9Z-A) Exia II CT6

Switch (EB9Z-A1) Exia II BT6

Safety

Performance

Performance level e

Category 4

Safety Relay Barriers

Safety Input Points Safety Output

Points

Auxiliary Input Points

(Note 1)

Auxiliary Output Points

(Relay Output)

Reset (Start)

(Note 2, Note 3) Part No.

2 2NO Without Without Auto reset (Auto start) EB3N-A2ND

Manual reset (Manual start) EB3N-M2ND

2 2NO 5 (1 common) 5NO (1 common) Auto reset (Auto start) EB3N-A2R5D

Manual reset (Manual start) EB3N-M2R5D

Note 1: A maximum of ve monitor contacts from safety input devices can be connected to the auxiliary input terminals. In addition, non-safety input devices can also be connected to the

auxiliary input terminals.

Note 2: On auto reset (auto start) models, when the safety condition is met (two safety inputs are both on), safety outputs are turned on automatically.

Connect the reset (start) input terminals Y1 and Y2 together except for the following cases:

When connecting a contactor or force guided relay to the safety output of the EB3N, connect the NC contacts of the contactor or force guided relay to the reset (start) input terminals

Y1 and Y2 of the EB3N for use as a backcheck input signal.

Note 3: On manual reset (manual start) models, while the safety condition is met (two safety inputs are both on), safety outputs are turned on at the falling edge of the reset switch (start

switch) signal (OFF ON OFF) (start off check).

Manual reset (manual start) models have a monitoring function of reset switch contacts (detection of welded contacts). Use NO contacts of a momentary switch for the reset (start)

input. When connecting a contactor or force guided relay to the safety output of the EB3N, connect the NC contacts of the contactor or force guided relay to the reset (start) input

terminals Y1 and Y2 of the EB3N for use as a backcheck input signal.

Selection Guide

1. Selecting the reset (start) function

Auto reset (auto start): Select this model when connecting safety control devices, such as safety relay modules or safety controllers, to the EB3N safety outputs to set up a safety

system, using the reset (start) function of the safety control device.

Select this model when connecting contactors or force guided relays to the EB3N safety outputs to set up a safety system, and a risk assessment on the entire

system has not found any safety problem in using auto reset (auto start).

Manual reset (manual start): Select this model when connecting contactors or force guided relays to the EB3N safety outputs to set up a safety system, and a risk assessment on the entire

system has found that manual reset (manual start) is necessary.

2. Selecting the auxiliary outputs

Without auxiliary outputs: Select this model when the operating status of safety input devices are not monitored.

With auxiliary outputs: Select this model when the operating status of safety input devices are monitored or when non-safety input devices are also connected.

General Specifications

Rated Power Voltage 24V DC

Power Voltage Range 20.4 to 26.4V DC

Operating Temperature

–20 to +60°C (no freezing)

UL: –20 to +40°C

(no freezing)

Operating Humidity 45 to 85% RH

(no condensation)

Power

Consumption

Without auxiliary output 5.5W maximum

With auxiliary output 7.0W maximum

Safety

Output

Contacts 13-14,

23-24 2NO

Rated Load Resistive 30V DC, 1A

Inductive DC-13, 24V, 1A

Response

(rated voltage)

Turn on 100 ms maximum

Turn off 20 ms maximum

Auxiliary

Output

Contacts A* - C1 5NO/1 common

Rated Load Resistive 24V DC, 3A,

common terminal 5A max.

Response

(rated voltage)

Turn on 15 ms maximum

Turn off 10 ms maximum

Mounting DIN rail or panel mounting

*: Channel Nos. 1 to 5

Explosion-Protection Specifications

Explosion Protection [Exia] II C

Non-intrinsically Safe Circuit Maximum Voltage

(Um) 250V (UL: 125V)

Intrinsically Safe Circuit Maximum Voltage (Uo) 13.2V

Intrinsically Safe Circuit Maximum Current (Io) 227.2 mA

Intrinsically Safe Circuit Maximum Power (Po) 750 mW

Intrinsically Safe Circuit Allowable Capacitance (Co) 0.49 µF (TIIS: 0.28 μF)

Intrinsically Safe Circuit Allowable Inductance (Lo) 0.60 mH

(TIIS: 0.56 mH)

Intrinsically Safe Circuit

Wiring Resistance (Rw)

Safety circuit (Note 1)

Auxiliary circuit (Note 2)

Note 1: 10Ω maximum (500m maximum using a 1.25 mm2 cable)

Note 2: 600/(N+1)Ω maximum, where N = the number of common channels

Safety Specifications

Category 4

Performance Level (PL) e

Mean Time to Dangerous Failure (MTTFd) 100 years

Diagnostic Range 99% minimum

Calculation conditions for MTTFd

tcycle: Mean operation cycle = 1 hour

hop: Mean operation hours per day = 24 hours

dop: Mean operation days per year = 365 days

Note: When tcycle is shorter than 1 hour, MTTFd will decrease.

EB3N Safety Relay Barriers

Certification No.

Certication

Organization Explosion Protection Certication No.

TIIS

Safety Relay Barriers [Exia] II C

Switch (EB9Z-A) [Exia] II CT6

Switch (EB9Z-A1) [Exia] II BT6

TC18753

TC15758

T15961

PTB

[Exia] II C, [Exia D] IEC Ex PTB 10.0015

II (1) G [Exia] II C

II (1) D [Exia D] PTB 09 ATEX 2046

CQST [Exia] II C CNEx 11.0038

UL Class I, Zone 0, [AExia] II C

Class I, II, III, Div. 1, Grps A, B, C, D, E, F and G E234997

Dimensions

EB3N-A2ND EB3N-A2R5D

EB3N-M2ND EB3N-M2R5D

Mounting Hole Layout

EB3N-A2ND EB3N-A2R5D

EB3N-M2ND EB3N-M2R5D

EB3N System Configuration Examples

EB3N-A2ND Safety Control Device

Safety Control Device

PLC

Safety Contactor

EB3N-M2ND Safety Contactor

Safety Contactor

Safety Input Device

Barrier Safety Output Safety Output

Barrier Safety Output

Backcheck Input

Safety Output

Backcheck Input

1:1 connection with a safety input device, compliant with Category 4

Connection with multiple safety input devices,

capable of monitoring up to 5 contact operations, compliant with Category 3

or monitoring operating statuses of safety input devices located in a non-hazardous area

EB3N-A2R5D

Monitor

Barrier Safety Output

Auxiliary Output

(Monitor Output)

Reset (Start) Input

Auxiliary Output

(Monitor Output)

EB3N-M2R5D

Barrier Safety Output

Hazardous Area Non-hazardous Area

• A safety relay module or safety controller is used

to set up a safety circuit, using the reset (start)

function of the safety relay module or safety

controller.

• The manual reset (manual start) function of the

EB3N is used to set up a safety circuit, without

using a safety control device.

• A safety relay module or safety controller is used

to set up a safety circuit, using the reset (start)

function of the safety relay module or safety

controller.

• The reset (start) function is used to set up a

safety circuit, without using a safety relay module

or safety controller.

Safety Input Devices

Connected in Series

…

Safety Input Devices

Connected in Series

…

Reset (Start) Input

Backcheck Input

Reset (Start) Input

Backcheck Input

Reset (Start) Input

65.0

75.0

110.5 77.5

75.0

Terminal Functions

24V DC Power

Y1-Y2 Reset input

(Start input)

11-12 Safety input 1

21-22 Safety input 2

N1, N2 Signal ground

P*-N3 Auxiliary input

13-14 Safety output 1

23-24 Safety output 2

A*-C1 Auxiliary output

*: 1 to 5

2-M4 tapped or

2-ø4.5 drilled holes

2-M4 tapped or

2-ø4.5 drilled holes

EBN Safety Relay Modules

Safety Control Device

Reset (Start) Switch

Other Input Device

PLC

Safety Contactor

Safety Output

Backcheck Input

Installing a reset switch in a hazardous area, using auxiliary input and output

Barrier Safety Output

Reset (Start) Output

Other Output

EB3N-A2R5D

EB3N-M2R5D

Barrier Safety Output

Backcheck Input

Reset (Start) Input

Other Output

Hazardous Area Non-hazardous Area

Safety Input Devices

…

Reset (Start) Switch

Other Input Device

Safety Input Devices

Safety Input Devices Connectable to Safety Input Terminals (Examples)

Emergency stop switch: (Non-illuminated) XW1E-BV402MFRH, XN4E-BL412MRH

Safety switch: HS6B-02B05, HS1B-02R

Operating Instructions

Notes for Operation

1. Do not disassemble, repair, or modify the EB3N safety relay barrier,

otherwise the safety characteristics may be impaired.

2. Use the EB3N within its specication values.

3. The EB3N can be mounted in any direction.

4. Mount the EB3N on a 35-mm-wide DIN rail or directly on a panel surface

using screws. When mounting on a DIN rail, push in the clamp and use end

clips to secure the EB3N. When mounting on a panel surface, tighten the

screws rmly.

5. Excessive noise may cause malfunction or damage to the EB3N. When the

internal voltage limiting circuit (thyristor) has shut down the power due to

noise, remove the cause of the noise before powering up again.

6. The internal power circuit contains an electronic fuse to suppress

overcurrents. When the electronic fuse has tripped, shut down the power,

remove the cause of the overcurrent before powering up again.

7. Use crimping terminals with insulation sheath for wiring. Tighten the terminal

screws, including unused terminal screws, to a recommended tightening

torque of 0.6 to N·m using a screwdriver of ø5.5 mm in diameter.

8. Before inspecting or replacing the EB3N, turn off the power.

Notes for Machine Safety

1. Operate the safety input device to check the EB3N functionality everyday.

2. For safety input devices, such as safety switches or emergency stop

switches, connected to the EB3N, use safety standard-compliant devices

with direct opening action and 2NC contacts.

3. Do not use the auxiliary input as a safety input.

4. For safety control devices connected with the EB3N, use machine safety

standard-compliant devices with a disparity detection function.

5. Use safety inputs and safety outputs in a circuit conguration compliant

with safety requirements.

6. To calculate the safety distance, take into consideration the response time

of all devices comprising the system, such as the EB3N and safety devices

connected to the EB3N.

7. Separate the input and output wiring from power lines and motor lines.

8. When using multiple EB3N safety relay barriers, do not connect one switch

to more than one EB3N. Use separate switches for each EB3N.

9. To ensure EMC, use shielded cables for safety inputs and auxiliary inputs.

Connect the shield to the FG of the control panel on which the EB3N is

mounted.

10. For protection against overcurrents, connect an IEC60127-2-compliant 2A

fast-blow fuse (5 × 20 mm).

11. Evaluate the ISO 13849-1 category and performance level in consideration

of the entire system.

Notes for Explosion Protection Safety

1. Install the EB3N in an enclosure capable of protecting against mechanical

shocks at a hazardous location in accordance with intrinsic safety ratings

and parameters.

2. Install and wire the EB3N so that the EB3N is not subject to electromagnetic

and electrostatic induction and does not contact with other circuits.

For example, keep a minimum spacing of 50 mm between intrinsically safe

and non-intrinsically safe circuits, or provide a metallic separating board

between the intrinsically safe circuit and non-intrinsically safe circuit. When

providing a metallic separating board, make sure that the board ts closely

to the enclosure (top, bottom, and both sides). Allowable clearance between

the board and the enclosure is 1.5 mm at the maximum.

When a motor circuit or high-voltage circuit is installed nearby, keep a wider

spacing than 50 mm between intrinsically safe and non-intrinsically safe

circuits.

3. Keep a minimum spacing of 3 mm between the terminal or relay terminal

block of the intrinsically safe circuit and the grounded metal parts of the

metal enclosure.

4. Connect the terminals so that IP20 is ensured.

5. To prevent disengaged wires from contacting with other intrinsically safe

circuits, bind together the end of wires.

6. Make sure that the voltage of the power supply for the devices connected

to the non-intrinsically safe circuit or the internal voltage of such devices

does not exceed 250V AC/DC 50/60 Hz or 250V DC under any normal and

abnormal conditions.

7. Make sure that the wiring of intrinsically safe circuits does not contact

with other circuits or is not subject to electromagnetic and electrostatic

inductions, otherwise explosion protection is not ensured.

8. When identifying intrinsically safe circuits by color, use light blue terminal

blocks and cables.

9. When wiring the intrinsically safe circuit, determine the distance to satisfy

the wiring parameters shown below.

a) Wiring capacitance Cw ≤ Co – Ci

Co: Intrinsically safe circuit allowable capacitance

Ci: Internal capacitance of switches

b) Wiring inductance Lw ≤ Lo – Li

Lo: Intrinsically safe circuit allowable inductance

Li: Internal inductance of switches

c) Wiring resistance ≤ Rw

Rw: Allowable wiring resistance

Switches in the Hazardous Area

1. A switch contains the switch contact, enclosure, and internal wiring. A

switch contact refers to an ordinary switching device which consists of

contacts only.

2. When the switch has internal wiring or lead wire, make sure that the values

of internal capacitance (Ci) and inductance (Li) are within the certied

values.

3. Enclose the bare live part of the switch contact in an enclosure of IP20 or

higher protection.

4. Depending on the explosion-protection specications of TIIS, the exposed

area of plastic switch operator, when installed in Japan, is limited as

follows:

Certication Explosion Protection Exposed Area

TC15758 Exia II CT6 20 cm2maximum

TC15961 Exia II BT6 100 cm2maximum

BGLEN01A-Fa-EB3N July 2021

EBN Safety Relay Modules

1. Notes on contents of Catalogs

(1) Rated values, performance values, and specification values of IDEC products

listed in this Catalog are values acquired under respective conditions in

independent testing, and do not guarantee values gained in combined

conditions.

Also, durability varies depending on the usage environment and usage

conditions.

(2) Reference data and reference values listed in Catalogs are for reference

purposes only, and do not guarantee that the product will always operate

appropriately in that range.

(3) The specifications / appearance and accessories of IDEC products listed in

Catalogs are subject to change or termination of sales without notice, for

improvement or other reasons.

(4) The content of Catalogs is subject to change without notice.

2. Note on applications

(1) If using IDEC products in combination with other products, confirm the

applicable laws / regulations and standards.

Also, confirm that IDEC products are compatible with your systems, machines,

devices, and the like by using under the actual conditions. IDEC shall bear no

liability whatsoever regarding the compatibility with IDEC products.

(2) The usage examples and application examples listed in Catalogs are for

reference purposes only. Therefore, when introducing a product, confirm the

performance and safety of the instruments, devices, and the like before use.

Furthermore, regarding these examples, IDEC does not grant license to use

IDEC products to you, and IDEC offers no warranties regarding the ownership

of intellectual property rights or non-infringement upon the intellectual

property rights of third parties.

(3) When using IDEC products, be cautious when implementing the following.

i. Use of IDEC products with sufficient allowance for rating and

performance

ii. Safety design, including redundant design and malfunction prevention

design that prevents other danger and damage even in the event that an

IDEC product fails

iii. Wiring and installation that ensures the IDEC product used in your

system, machine, device, or the like can perform and function according

to its specifications

(4) Continuing to use an IDEC product even after the performance has

deteriorated can result in abnormal heat, smoke, fires, and the like due to

insulation deterioration or the like. Perform periodic maintenance for IDEC

products and the systems, machines, devices, and the like in which they are

used.

(5) IDEC products are developed and manufactured as general-purpose products

for general industrial products. They are not intended for use in the following

applications, and in the event that you use an IDEC product for these

applications, unless otherwise agreed upon between you and IDEC, IDEC shall

provide no guarantees whatsoever regarding IDEC products.

i. Use in applications that require a high degree of safety, including nuclear

power control equipment, transportation equipment (railroads / airplanes

/ ships / vehicles / vehicle instruments, etc.), equipment for use in outer

space, elevating equipment, medical instruments, safety devices, or

any other equipment, instruments, or the like that could endanger life or

human health

ii. Use in applications that require a high degree of reliability, such as

provision systems for gas / waterworks / electricity, etc., systems that

operate continuously for 24 hours, and settlement systems

iii. Use in applications where the product may be handled or used deviating

from the specifications or conditions / environment listed in the Catalogs,

such as equipment used outdoors or applications in environments

subject to chemical pollution or electromagnetic interference

If you would like to use IDEC products in the above applications, be sure

to consult with an IDEC sales representative.

3. Inspections

We ask that you implement inspections for IDEC products you purchase without

delay, as well as thoroughly keep in mind management/maintenance regarding

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4. Warranty

(1) Warranty period

The warranty period for IDEC products shall be one (1) year after purchase or

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there is a different specification in the Catalogs or there is another agreement

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(2) Warranty scope

Should a failure occur in an IDEC product during the above warranty period

for reasons attributable to IDEC, then IDEC shall replace or repair that

product, free of charge, at the purchase location / delivery location of the

product, or an IDEC service base. However, failures caused by the following

reasons shall be deemed outside the scope of this warranty.

i. The product was handled or used deviating from the conditions /

environment listed in the Catalogs

ii. The failure was caused by reasons other than an IDEC product

iii. Modification or repair was performed by a party other than IDEC

iv. The failure was caused by a software program of a party other than

IDEC

v. The product was used outside of its original purpose

vi. Replacement of maintenance parts, installation of accessories, or the like

was not performed properly in accordance with the user’s manual and

Catalogs

vii. The failure could not have been predicted with the scientific and

technical standards at the time when the product was shipped from

IDEC

viii. The failure was due to other causes not attributable to IDEC (including

cases of force majeure such as natural disasters and other disasters)

Furthermore, the warranty described here refers to a warranty on the IDEC

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The warranty listed in this Agreement is the full and complete warranty for IDEC

products, and IDEC shall bear no liability whatsoever regarding special damages,

indirect damages, incidental damages, or passive damages that occurred due to an

IDEC product.

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The prices of IDEC products do not include the cost of services, such as dispatching

technicians. Therefore, separate fees are required in the following cases.

(1) Instructions for installation / adjustment and accompaniment at test operation

(including creating application software and testing operation, etc.)

(2) Maintenance inspections, adjustments, and repairs

(3) Technical instructions and technical training

(4) Product tests or inspections specified by you

The above content assumes transactions and usage within your region. Please

consult with an IDEC sales representative regarding transactions and usage outside

of your region. Also, IDEC provides no guarantees whatsoever regarding IDEC

products sold outside your region.

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