5
EB3C Relay Barrier
Explosion-Protection and Electrical Specifications
Note: Values in ( ) are those approved by TIIS (Technology Institution of
Industrial Safety, Japan).
Certification No.
Note: For details about switches, see “Switch Explosion-Protection Specifica-
tions” on page 5 and “3. Switches in the Hazardous Area” on page 9.
General Specifications
Switch Explosion-Protection Specifications (TIIS Japan)
Simple apparatuses in accordance with relevant standards of each country can be
installed in the hazardous area and connected to the EB3C located in the safe
area. In Japan, any switches, though regarded as simple apparatuses, must be cer-
tified for explosion-proof devices. EB9Z-A and EB9Z-A1 are IDEC’s generic Type
No. of any single apparatuses certified by TIIS Japan for use with the EB3C, there-
fore simple apparatuses with specifications shown below can be used as those
approved by the Japanese explosion-proof certification.
Note: For details, see “3. Switches in the Hazardous Area” on page 9.
Explosion Protection Intrinsic safety type
(IEC compliant) [Exia] II C
Degree of Protection IP20 (IEC60529)
Installation
Location
Relay Barrier Safe indoor place
(non-hazardous area)
Switch For zone 0, 1, 2 hazardous areas
Non-intrinsically Safe Circuit
Maximum Voltage (Um) 250V AC 50/60Hz, 250V DC
Intrinsically Safe Circuits
Wiring Method 1-channel
Separate Wiring
16-channel
Common Wiring
Rated Operating Voltage 12V DC ±10%
Rated Operating Current 10 mA DC ±20%
Maximum Output Voltage (Uo) 13.2V DC
Maximum Output Current (lo) 14.2 mA 227.2 mA
Maximum Output Power (Po) 46.9 mW 750 mW
Maximum External Inductance (Lo)
(Note) 175 (125) mH 0.68 (0.68) mH
Maximum External
Capacitance (Co) (Note) 900 (740) nF
Allowable Wiring Resistance (Rw) 300
Ω
600/(n+1)
Ω
(n = number of
common
channels)
Maximum Channels per
Common Line –16
Non-intrinsically Safe Circuits
Relay Output
Contact Configuration 1NO
Rated Insulation Voltage (Ui) 250V AC, 125V DC
Thermal Current (lth) 3A (common terminal: 8A)
Contact
Allowable Power
Resistive Load AC: 750 VA, DC: 72W
Inductive Load AC: 750 VA (cos ø = 0.3 to 0.4)
DC: 48W (L/R = 7 ms)
Rated Load
Resistive Load 250V AC 3A, 24V DC 3A
Inductive Load 250V AC 3A (cos ø = 0.3 to 0.4)
24V DC 2A (L/R = 7 ms)
Minimum Applicable Load 0.1V DC, 0.1 mA (reference value)
Contact Resistance 50 m
Ω
maximum (initial value)
Turn ON Time 12 ms maximum (rated voltage)
Turn OFF Time 10 ms maximum (rated voltage)
Mechanical Life
20,000,000 operations minimum
(at 18,000 operations/hour, without
load)
Electrical Life 100,000 operations minimum
(at 1,800 operations/hour, rated load)
Short-circuit Protection None
Transistor Output
Rated Voltage 24V DC
Maximum Voltage 30V DC
Maximum Current 100 mA (connector type: 15 mA)
Leakage Current 0.1 mA maximum
Voltage Drop 1V maximum
Clamping Voltage 33V (1W)
Inrush Current 0.5A maximum (1 sec)
Turn ON Time 0.1 ms maximum (resistive load)
Turn OFF Time 0.4 ms (typical) (resistive load)
Short-circuit Protection None
Certification
Organization Explosion Protection Certification No.
FM
Class I, II, III Div. 1
Group A, B, C, D, E, F, G 3015417 (terminal type)
3019223 (connector type)
Class I, Zone 0 AEx [ia] IIC
CSA Class I Div. 1 Group A, B, C, D 166730
NEMKO [EExia] II C Nemko 02ATEX279
TIIS Japan
Relay barrier: [Exia] II C C15753
Switch (EB9Z-A): Exia II CT6 C15758
Switch (EB9Z-A1): Exia II BT6 C15961
ClassNK Exia II C 02T606
Power Voltage Type AC Power Type DC Power Type
Rated Power Voltage 100 to 240V AC 24V DC
Allowable Voltage
Range 85 to 264V AC 21.6 to 26.4V DC
Rated Frequency 50/60 Hz (allowable range:
47 to 63 Hz) —
Inrush Current 10A (100V AC)
20A (200V AC) 10A
Dielectric Strength
(1 minute, 1 mA)
Between intrinsically safe circuit and non-intrinsically
safe circuit:1500V AC
Between AC power and output terminal: 1500V AC
Between DC power and transistor output terminal:
1000V AC
Operating Temperature –20 to +60°C (no freezing)
Storage Temperature –20 to +60°C (no freezing)
Operating Humidity 45 to 85% RH (no condensation)
Atmosphere 800 to 1100 hPa
Pollution Degree 2 (IEC60664)
Insulation Resistance 10 M
Ω
minimum (500V DC megger, between the same
poles as the dielectric strength)
Vibration
Resistance
Damage Limits Panel mounting: 10 to 55 Hz, amplitude 0.75 mm
DIN rail mounting: 10 to 55 Hz, amplitude 0.35 mm
Operation
Extremes
(relay output
only)
Panel mounting: 10 to 55 Hz, amplitude 0.5 mm
DIN rail mounting: 10 to 55 Hz, amplitude 0.35 mm
Shock
Resistance
Damage Limits
Panel mounting: 500 m/s
2
(3 times each on X, Y, Z)
DIN rail mounting: 300 m/s
2
(3 times each on X, Y, Z)
Terminal Style M3 screw terminal
Mounting 35-mm-wide DIN rail or panel mounting (M4 screw)
Power Consumption
(approx.)
9.6 VA (EB3C-R10A at 200V AC)
4.8 W (EB3C-R16CD at 24V DC)
Weight (approx.) 0.39 kg (EB3C-R16CD)
Switch Type No. EB9Z-A EB9Z-A1
Explosion Proof Exia II CT6 Exia II BT6
Operating Temperature –20 to +60°C (no freezing)
Operating Humidity 45 to 85% RH (no condensation)
Degree of Protection IP20
Dielectric Strength 500V AC, 1 mA
Intrinsic Safety Ratings
and Parameters
1-channel Separate Wiring
Maximum input voltage (Ui): 13.2V
Maximum input current (Ii): 14.2 mA
Maximum input power (Pi): 46.9 mW
Internal inductance (Li):
≤
5 µH
Internal capacitance (Ci):
≤
2 nF
16-channel Common Wiring
Maximum input voltage (Ui): 13.2V
Maximum input current (Ii): 227.2 mA
Maximum input power (Pi): 750 mW
Internal inductance (Li):
≤
80 µH
Internal capacitance (Ci):
≤
32 nF
Enclosure Material
Metallic: Magnesium content must be 6% or less
(steel and aluminum are acceptable)
Plastic: Switch operator
exposed area
IIC: 20 cm
2
maximum
IIB: 100 cm
2
maximum
When the switch has a
wider exposed area, attach
a caution label as shown at
right.
Switch Ratings
Contact rating: Ui, Ii minimum
Contact resistance: 0.5
Ω
maximum
Cross sectional area of wire: 0.000962 mm
2
maximum
Printed circuit board: Thickness 0.5 mm minimum
Copper foil width 0.15 mm
minimum
Thickness 18 µm minimum one/
both side(s)
A resistor to prevent contact welding and an LED can be
connected to 1-channel separate wiring circuits. Consult
IDEC for details.
To prevent electrostatic
charges, do not rub the
switch surface during
operation. Use a soft
cloth dipped with water
for cleaning.
Caution
Caution Label Example
EB3C-3L catalog Page 5 Monday, February 13, 2006 1:44 PM