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EB3N Safety Relay Barrier
Safety Input Devices Connectable to Safety Input Terminals (Examples)
Emergency stop switch:
Safety switch:
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 specification 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 firmly.
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 sup-
press 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 configuration
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 mo-
tor 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 aux-
iliary 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.
Specifications and other descriptions in this catalog are subject to change without notice.
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E-mail: sales@au.idec.com
www.idec.com
(10/02/05)
(Non-illuminated) XW1E-BV402MFRH, XN4E-BL412MRH
HS6B-02B05, HS1B-02R
IDEC ELECTRONICS LIMITED
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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 con-
tact 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 fits closely to the
enclosure (top, bottom, and both sides). Allowable clearance
between the board and the enclosure is 1.5 mm at the maxi-
mum.
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 intrinsi-
cally 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 certified 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 specifications of TIIS,
the exposed area of plastic switch operator, when installed in
Japan, is limited as follows:
Certification
Explosion Protection
TC15758
Exia II CT6
TC15961
Exia II BT6
7-31, Nishi-Miyahara 1-Chome, Yodogawa-ku, Osaka 532-8550, Japan
Tel: +81-6-6398-2571, Fax: +81-6-6392-9731
E-mail: marketing@idec.co.jp
Cat. No. EP1300-0 FEBRUARY 2010 PDF
Exposed Area
2
20 cm
maximum
100 cm
2
maximum
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IDEC IZUMI ASIA PTE. LTD.
Tel: +65-6746-1155, Fax: +65-6844-5995
E-mail: info@sg.idec.com
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