IDEC EB3N Manual page 2

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EB3N Safety Relay Barrier

Build a safety system in an explosive atomosphre

Safety relay barrier [Exia] Ⅱ C

Explosion

Switch (EB9Z-A)

Exia Ⅱ CT6

Protection

Switch (EB9Z-A1)

Exia Ⅱ BT6

•

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 hazard-

ous areas are available.

•

Available with auxiliary inputs (5 points) used to monitor the oper-

ating status of safety input devices.

•

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

interlock switches are available.

•

Global usage

Explosion protection: Japan (TIIS), USA (FM pending), Europe

(ATEX pending), China (CQST pending)

Machine safety:

TÜV Rheinland

•

No grounding required

Types

Safety Input

Safety Output

Points

2NO

Note 1: A maximum of five 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 momen-

tary 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):

Manual reset (manual start):

2. Selecting the auxiliary outputs

Without auxiliary outputs:

With auxiliary outputs:

General Specifications

Rated Power Voltage

Power Voltage Range

Operating Temperature

Operating Humidity

Without auxiliary output

Power

Consumption

With auxiliary output

Contacts

13-14, 23-24 2NO

Resistive

Rated Load

Safety

Inductive

Output

Turn on

Response

(rated voltage)

Turn off

Contacts

A* - C1

Rated Load

Resistive

Auxiliary

Output

Turn on

Response

(rated voltage)

Turn off

Mounting

*: Channel Nos. 1 to 5

Safety

Performance level e

Performance

Category 4

Auxiliary Input Points

Auxiliary Output Points

(Note 1)

Without

5 (1 common)

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).

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.

Select this model when the operating status of safety input devices are not monitored.

Select this model when the operating status of safety input devices are monitored or when non-safety input devices are

also connected..

24V DC

20.4 to 26.4V DC

–20 to +60°C (no freezing)

45 to 85% RH

(no condensation)

5.5W maximum

7.0W maximum

30V DC, 1A

DC-13, 24V, 1A

100 ms maximum

20 ms maximum

5NO/1 common

24V DC, 3A,

common terminal 5A max.

15 ms maximum

10 ms maximum

DIN rail or panel mounting

(Relay Output)

(Note 2, Note 3)

Auto reset (Auto start)

Without

Manual reset (Manual start)

Auto reset (Auto start)

5NO (1 common)

Manual reset (Manual start)

Explosion-Protection Specifications

Explosion Protection

Non-intrinsically Safe Circuit Maximum Voltage (Um)

Intrinsically Safe Circuit Maximum Voltage (Uo)

Intrinsically Safe Circuit Maximum Current (Io)

Intrinsically Safe Circuit Maximum Power (Po)

Intrinsically Safe Circuit Allowable Capacitance (Co)

Intrinsically Safe Circuit Allowable Inductance (Lo)

Intrinsically Safe Circuit

Wiring Resistance (Rw)

Note 1: 10Ω maximum (500m maximum using a 1.25 mm

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

Safety Specifications

IDEC EB3N Manual page 2

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