Transformer Isolated Amplifier EG4-OTLK
Output: Transistor
Input I ... Input IV
EEx ia IIC
Sensor
- Control circuit EEx ia IIC
mech. contact
with LB / SC
Hazardous Area
- 4-Channel
- DC 24 V supply voltage
- Lead breakage (LB) and short circuit
(SC) monitoring may be disabled
Chan.
Chan.
Chan.
Chan.
1
2
3
4
Chan.
Chan.
Chan.
Chan.
1
2
3
4
z2+
z4+
z6+
z8+
d2d4d6d8-
- 1 active transistor output per channel,
fault signal.
- 2 transistor outputs per channel
1 passive transistor output: 100 mA
1 active transistor output: 10 mA
The transformer isolated amplifier transmits digital signals from the hazardous area.
Sensors per DIN 19234 (NAMUR) or mechanical contacts can serve as inputs. The
control circuit can be monitored by lead
breakage and short circuit monitoring.
1 kΩ
z2+
z4+
z6+
z8+
10 kΩ
d2d4d6d8-
* LB
z2+
z4+
z6+
z8+
d2d4d6d8-
b2
b4
b6
b8
2.1 ... 2.4
+
LB
SC
+
4 Channel
3.1
1.1 ... 1.4
SC
Safe Area
- Reversible operating mode
&
Notes on connection assignments:
Lead breakage monitoring (LB)
d2, b2; d4, b4; d6, b6; d8, b8
Lead breadage monitoring can be disabled
by bridging the above connections. If necessary, the unit can be supplied with the
lead breakage monitoring feature already
disabled with a factory installed jumper on
the card.
Operating mode z18; z22; z26; z30
Logic-1: no reversal of operating mode
from input to output
Logic-0: reversal of operating mode from
input to output
(see table of operating modes on page 25)
If necessary, the operating mode can also
be selected with a factory installed jumper
on the card.
=1
+ -
&
U
red
yellow
Chan. 1
Chan. 2
Chan. 3
Chan. 4
z18
z22
z26
z30
Operating
Mode
6.1 ... 6.4
U
(-)
z20
z24
z28
z32
b18b22b26b30-
Output
I / IV
VII / X
d18+
d22+
d26+
d30+
Output
II / V
VIII / XI
b14
d16
b16
z16
Output
III / VI
IX / XII
Fault Signal
d14
(L+)
z14
(L-)
Power Supply
* Bridge for disabling lead breakage monitoring
Fault signal outputs b14; d16; b16; z16
For short circuit or lead breakage (Indicator:
LED red). The error signal outputs are combined by a circuit lead, so that only one
connection is required for the fault evaluation of all channels on the card. If the evaluation of each individual channel is necessary, then the circuit lead must be breached
at positions 6.1 ... 6.4 as shown (See side
view of card).
Front View
Type A
(dimensions see page 16)
LED yellow:
Electronic Output Chan. 2
LED red:
Fault Signal Chan. 2
LED yellow:
Electronic Output Chan. 4
LED yellow:
Transistor Output Chan. 1
LED red:
Fault Signal Chan. 1
LED yellow:
Transistor Output Chan. 3
LED red:
Fault Signal Chan. 3
Issue Date 20.02.02
LED red:
Fault Signal Chan. 4
Subject to reasonable modifications due to technical advances.
80
Copyright Pepperl+Fuchs, Printed in Germany
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Transformer Isolated Amplifier EG4-OTLK
Output: Transistor
Technical data
Power supply
Nominal voltage
Ripple
Nominal current
DC 20.4 V ... 27.6 V
≤ 10 %
≤ 120 mA
Inputs (intrinsically safe)
Input I :
Input II :
Input III :
Input IV :
Nominal circuit values
Open circuit voltage / short circuit current
Switch point / switch hysteresis
Input pulse length / pulse interval
Lead monitoring
Connections z2+, d2Connections z4+, d4Connections z6+, d6Connections z8+, d8per DIN 19 234 with respect to NAMUR
about DC 8 V / about 8 mA
1.2 mA ... 2.1 mA / about 0.2 mA
≥ 0.5 ms / ≥ 0.5 ms
Breakage J < 0.1 mA
short circuit J > 6 mA
Connections d14 (L+), z14 (L-)
Certificate of Conformity Peak Values
Max. voltage U0
Max. current I0
Max. power P0
Allowable circuit values
Ignition protection method, category
Explosion group
Max. external capacitance
Max. external inductance
PTB Nr. Ex-81/2065X other certifications see www.pepperl-fuchs.com
12.7 V
21 mA
66 mW
[EEx ia]
IIB
1.1 µF
5 mH
Input (not intrinsically safe)
Signal level Logic-1
Signal level Logic-0
DC 15 V ... 30 V
DC 0 V ... 5 V or B-contact input
Outputs (not intrinsically safe)
Output I, IV, VII, X :
Nominal current
Signal level Logic-1 / Logic-0
Output II, V, VIII, VI :
Nominal current
Transistor output, active
Connections z20, z24, z28, z32
10 mA, short circuit protection
(L+) -3 V / cut off output (leakage current J ≤ 10 µA)
Transistor output, passive
Connections b18-; d22+, b22-; d26+, b26-; d30+, b30100 mA, short circuit protection
Transfer characteristics
Switch frequency
1 kHz
Galvanic isolation
Output I ... XII from each other
Output I ... XII from the power supply
Input I ... IV from output I ... XII
Input I ... IV from power supply
Safe
Safe
Safe
Safe
Conformity to standard
Input
Climatic conditions
per DIN 19234 (NAMUR)
per DIN IEC 721
Ambient temperature
Connection method
Coding
Weight
-25 °C ... +70 °C (248 K ... 343 K)
48-pin plug connector per DIN 41 612, Series 2, Type F; z, b and d provided
a3 / c7
about 100 g
/ IIC
/ 0.37 µF
/ 2 mH
[EEx ib]
IIB
3.9 µF
260 mH
/ IIC
/ 0.8 µF
/ 70 mH
Connections z18, z22, z26, z30
per DIN VDE 0106,
per DIN VDE 0106,
isolation per EN 50
isolation per EN 50
design isolation voltage 50 Veff
design isolation voltage 50 Veff
020, voltage peak value 375 V
020, voltage peak value 375 V
Issue Date 20.02.02
isolation
isolation
galvanic
galvanic
Subject to reasonable modifications due to technical advances.
Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group · Tel.: Germany (6 21) 7 76-22 22 · USA (3 30) 4 25 35 55 · Singapore 7 79 90 91 · Internet http://www.pepperl-fuchs.com
81
Transformer Isolated Amplifier EG4-OTLK
Output: Transistor
EExInput
module
V1.1
Plug Connector per DIN 41 612
1.4
2.1
2.2
EExInput
module
V1.2
1.3
3.1
1.2
EExInput
module
V1.3
1.1
EExInput
module
V1.4
2.3
2.4
Side View
6.1
6.2
6.3
6.4
Programming facilities on the card
Jumpers
Plug-in design:
1.1 (open)
1.2 (open)
1.3 (open)
1.4 (open)
2.1 (open)
2.2 (open)
2.3 (open)
2.4 (open)
If link 3.1 is closed,
Reverse operating mode of channel 1
Reverse operating mode of channel 2
Reverse operating mode of channel 3
Reverse operating mode of channel 4
Lead breakage monitoring channel 1: active
Lead breakage monitoring channel 2: active
Lead breakage monitoring channel 3: active
Lead breakage monitoring channel 4: active
short circuit and lead breakage monitoring for all channels are cut off.
6.1, 6.2, 6.3, 6.4
Separation of the individual monitoring outputs
Delivery status
Jumpers
1.1 to 3.1:
open
Issue Date 01.08.96
Breach points
Subject to reasonable modifications due to technical advances.
82
Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group · Tel.: Germany (6 21) 7 76-22 22 · USA (3 30) 4 25 35 55 · Singapore 7 79 90 91 · Internet http://www.pepperl-fuchs.com