Certifying authority: NEPSI(China)
Conformity
standards: GB3836
.
1, GB3836
.
4, GB3836
.
20, GB12476
.
1
and GB12476
.
4
Ex marking:
[
Ex
ia Ga
]Ⅱ
C , [Ex iaD]
Maximum
voltage:
Um=250V
Intrinsic
safety
parameters:
(
7
,
8 terminals
)
Uo=10.5V, Io=14mA ,
Po=37mW
Ⅱ
C: Co=2.4
μ
F , Lo=165mH
*
Ⅱ
B: Co
=
16
.
8
μ
F , Lo
=
495mH
Ⅱ
A: Co
=
75
μ
F
,
Lo
=
1000mH
Note: *
Ⅱ
B parameters are also applicable for combustible dust
atmospheres.
(
1
)
For circuits only containing distributed capacitance and distributed
inductance, e
.
g
.
cable
,
allow
the
values
of
Co and Lo in accordance with
the allowed values in the certification parameters;
(
2
)
For circuit combined with IS circuit and cables, if the inductance or
capacitance of IS circuit are no greater than 1% of the respective
parameters, then the permissible maximum external output parameters
of capacitance and inductance in accordance with the allowed values in
the certification parameters;
(
3
)
For circuit combined with inductance and capacitance, if both
parameters are greater than 1% of the output parameters (excluding
cables), then the permissible maximum external output parameters of
capacitance and inductance should be 50% of the allowed values in the
certification parameters.
When using the values of maximum external capacitance (Co) and
inductance (Lo), please attend the following requirements:
Application
Dimensions
118.9mm×106.0mm×12.5mm
Note: Bus-powered function is optional.
1
2
3
Safe-area
Hazardous
-
area
Number
of
channels: 1/2
Supply
voltage: 20~35V DC
Current
consumption:
≤
40mA(at
24Vdc
supply
,
output relay
energized
)
Safe-area relay output:
Response
time:
≤
10ms
Contact loading: 250V AC, 2A or 30V DC, 2A
Load
type:
resistive
load
Hazardous
-
area
input:
Signal: dry contact
or
NAMUR
Proximity
Detector
Open Circuit Voltage
≈
8V
Short Circuit Current
≈
8mA
Input and output characteristics (K1~K4 are separately set to ON, ON,
OFF, OFF state)
:
:
Note: 1) K2~K4 are separately set to ON, OFF, OFF.
2) Dy contact switch inputs need to connect according to the
way of Switch ( ).
Power
supply
protection: Power supply reverse
protection
EMC:
According
to IEC
-
/
Dielectric strength:
Between non
-
IS
part
and
IS
part
≥
2500VAC
Between
power
supply
part
and
output
part
≥
500VAC
Insulation resistance:
Between non
-
IS
part and IS
part
≥
100M
Ω
Between
power
supply
part
and
output
part
≥
100M
Ω
Weight: Approx
.
100g
Suitable
location: Mounting in safe area, and connected to the IS
apparatus in hazardous area up to zone 0 IIC and zone 20 IIIC.
Suitable
field
apparatus:
Dry contact or DIN19234 standard NAMUR proximity switch input field
devices(including the intrinsically safe type pressure switch,
temperature switches, liquid level switch).
Function of the DIP Switch
Ⅱ
61326 1
(
GB T 18268)
IN
OUT
Intrinsic Safety Certification
Specification
Intrinsic Safety Explosion Protection System
Switch
(
)
Ⅱ
Proximity
switch
Power supply
Power bus
6
5
8 (-)
7 (+)
2(-)
1(+)
7
8
4
3
OUT
LFD
- +
680
Ω
22k
Ω
GS8512-EX.12
Input signal
Input
＞
2.1mA
Input
＜
1.2mA
Input breakage
Input short-circuits
Output relay
LFD relay
Sta.
OFF
ON
OFF
OFF
ON
Yellow LED OFF
ON
OFF
Yellow LED ON
OFF
Red LED ON
Red LED ON
Function
ON
OFF
K1
Inverted Phase
Normal Phase
115.1mm
118.9mm
12.5mm
99mm
Summarize
Ambient Conditions
Digital input, relay output isolated
barrier, transfers digital signals (dry
contact or NAMUR proximity switch) from hazardous
area to safe area.
The output can be provided to select phase reversal and to enable the
line fault detection. The product needs an independent power supply
and galvanic isolation among power supply, input and output.
(
1
)
There should be no following substances in the air: flammable and
explosive substances; medium that could corrupt the coat of chrome,
nickel and silver
.
Moreover
,
please avoid using this product in violent
quiver
，
impact
or strong electromagnetic
interference
environment.
(
2
)
Operating
temperature
: -
20
℃~+
60
℃
(
3
)
Storage
temperature
: -
40
℃~+
80
℃
(
4
)
Relative
humidity
:
10
%~
90
%
Special
requirements
have to be
confirmed
before
using
the intrinsically
safety
explosion
protection system(intrinsically circuit) which connected
by isolated
barrier and
intrinsically
safe
apparatus
in
field
:
(
1
)
The EX-proof level of
intrinsically
safe
apparatus
should
meet
the
requirements
of
operation
conditions. The apparatus
should
pass
the
explosion
protection
test
and
get
the
certificate by authorized explosion-
proof product certification bodies
.
(
2
)
The
intrinsic
safety
parameters
of
isolated
barrier
and
intrinsically
safe
apparatus
both
are
clear
,
and
comply
with
GB/T
3836
.
15.
(3) If any parameters are unclear, the system has to be confirmed by
authorized explosion-proof product certification bodies
.
