ITEM #25
E-T-A Circuit Protection and Control ESX10-100-DC24V-2A-E
Electronic Circuit Protector ESX10
Issue C 5 - 27
5
Description
Technical data (Tambient = 25 °C, operating voltage US = DC 24 V)
ESX10
Electronic circuit protector type ESX10 is designed to ensure selective
disconnection of DC 24 V load systems.
DC 24 V power supplies, which are widely used in industry today, will
shut down the output in the event of an overload with the result that
one faulty load in the system can lead to complete disconnection of
all loads. As well as an unidentified failure this also means stoppage
of the whole system.
Through selective disconnection the ESX10 responds much faster
to overload or short circuit conditions than the switch-mode power
supply. This is achieved by active current limitation. The ESX10 limits
the highest possible current to values between 1.3 to 1.8 times the
selected rated current of the circuit protector. Thus it is possible to
switch on capacitive loads of up to 20,000 μF lamp loads, but they
are disconnected only in the event of an overload or short circuit.
For optimal alignment with the characteristics of the application the
current rating of the ESX10 can be selected in fixed values from
0.5 A...12 A. Failure and status indication are provided by a multicolour
LED and an integral short-circuit-proof status output or a potential-free
signal contact.
The ESX10, with a width of only 12.5 mm, can be plugged into the
E-T-A power distribution socket Module 17plus ensuring ease of
installation and saving space in control cabinets.
Upon detection of overload or short circuit in the load circuit, the
MOSFET of the load output will be blocked to interrupt the
current flow. The MOSFET and the load circuit may be re-activated
via the remote electronic reset input or manually by means of the
ON/OFF button. When starting up the system, the load circuit may
also be manually disconnected.
Features
Approvals
â—� Selective load protection, electronic trip characteristics.
â—� Active current limitation for safe connection of capacitive loads
up to 20,000 μF and on overload/short circuit.
â—� Current ratings 0.5 A...12 A.
â—� Reliable overload disconnection with 1.1 x IN plus, even with long
load lines or small cable cross sections (see table 3).
â—� Manual ON/OFF button (S1).
â—� Control input IN+ for remote ON/OFF signal (option).
â—� Clear status and failure indication through LED, status output SF
or Si contact F.
â—� Electronic reset input RE (option).
â—� Integral fail-safe element.
â—� Width per unit only 12.5 mm.
â—� Plug-in mounting utilising power distribution system Module 17plus
or SVSxx optionally (see product group Power distribution systems)
Authority Voltage rating Current ratings
UL 2367 DC 24 V 0.5...12 A
UL 508 DC 24 V 0.5...12 A
CSA C22.2 No: 14 DC 24 V 0.5...12 A
Attention:
â—� The user should ensure that the cable cross sections of the relevant
load circuit are suitable for the current rating of the ESX10 used.
â—� Automatic start-up of machinery after shut down must be prevented
(Machinery Directive 98/37/EG and EN 60204-1). In the event of
a short circuit or overload the load circuit will be disconnected
electronically by the ESX10.
Operating data
Operating voltage US DC 24 V (18...32 V)
Current rating IN fixed current ratings: 0.5 A, 1 A, 2 A, 3 A,
4 A, 6 A, 8 A, 10 A, 12 A
Closed current I0 ON condition: typically 20...30 mA
depending on signal output
Status indication â—� multicolour LED:
by means of GREEN: unit is ON, power-MOSFET
is switched on
- status output SF ON,
supplies + DC 24 V
ORANGE: in the event of overload or short circuit
until electronic disconnection
RED: - unit electronically disconnected
- load circuit/Power-MOSFET OFF
OFF: - manually switched off (S1 = OFF)
or device is dead
- undervoltage (US < 8 V)
- after switch-on till the end
of the delay period
â—� status output SF (option)
â—� potential-free signal contact F (option)
â—� ON/OFF/ condition of switch S1
Load circuit
Load output Power-MOSFET switching output
(high side switch)
Overload disconnection typically 1.1 x IN (1.05...1.35 x IN)
Short-circuit current IK active current limitation (see table 1)
Trip time see time/current characteristics
for electronic disconnection typically 3 s at ILoad > 1.1 x IN
typically 3 s...100 ms at ILoad > 1.8 x IN
(or 1.5 x IN/1.3 x IN)
Temperature disconnection internal temperature monitoring with
electronic disconnection
Low voltage monitoring
load output with hysteresis, no reset necessary
load “OFF� at US < 8 V
Starting delay tstart typically 0.5 sec after every switch-on
and after applying US
Disconnection of load circuit electronic disconnection
Free-wheeling circuit external free-wheeling diode
recommended with inductive load
Several load outputs must not be connected in parallel
www.e-t-a.com
Electronic Circuit Protector ESX10
5 - 28 Issue C
5
Status output SF ESX10-104/-106/-124/-127
Electrical data plus-switching signal output,
connects US to terminal 12 of module 17plus
nominal data: DC 24 V / max. 0.2 A (short
circuit proof)
status output is internally connected to
GND with a 10 kOhm resistor
Status OUT ESX10-104/-106/ -124 (signal status OUT),
at US = +24 V
+24 V = S1 is ON, load output connected
through 0V = S1 is ON, load output
blocked and/or switch S1 is OFF
Status OUT ESX10-127 (signal status OUT inverted),
at US = +24 V
+24 V = S1 is ON, load output blocked,
red LED lighted
0 V = S1 is ON, load output connected
through and/or switch S1 is in OFF position
OFF condition 0 V level at status output when:
â—� switch S1 is in ON position, but device is
still in switch-on delay
â—� switch S1 is OFF, or control signal OFF,
device is switched off
â—� no operating voltage US
Signal output F ESX10-101/-102/-103/-105/-106/-115/-125
Electrical data potential-free signal contact
max. DC 30 V/0.5 A, min. 10 V/10 mA
ON condition LED green voltage US applied, switch S1 is in ON
position
no overload, no short circuit
OFF condition LED off â—� device switched off
(switch S1 is in OFF position)
â—� no voltage US applied
Fault condition LED orange overload condition > 1.1 x IN up to
electronic disconnection
Fault condition LED red electronic disconnection upon
overload or short circuit
device switched off with control signal
(switch S1 is in ON position)
ESX10-101 single signal, make contact
contact SC/SO-SI open
ESX10-102 single signal, break contact
contact SC/SO-SI closed
ESX10-103 group signal change-over contact
contact SC-SO open, SC-SI closed
ESX10-105/-106/-115/-125 group signal, make contact
contact SC-SO open
Fault signal output fault conditions:
â—� no operating voltage US
â—� ON/OFF switch S1 is in OFF position
â—� red LED lighted (electronic disconnection)
Technical data (Tambient = 25°C, operating voltage US = DC 24 V) Technical data (Tambient = 25°C, operating voltage US = DC 24 V)
Reset input RE ESX10-124/-125/-127
Electrical data voltage: max. + DC 32 V
high > DC 8 V ≤ DC 32 V
low ≤ DC 3 V > 0 V
power consumption typically 2.6 mA
(+DC 24 V)
min. pulse duration typically 10 ms
Reset signal RE The electronically blocked ESX10-124/-127
(= terminal 13,14 or 12 may remotely be reset via an external
of Module 17plus) momentary switch due to the falling edge of
a +24 V pulse.
Caution: unused slots The reset signal will be fed in terminal 13, 14
have to be fitted with or 12 of Module 17plus and is internally
jumpers pre-wired.
The reset simultaneously affects all blocked
ESX10-124/-127 channels of the power
distribution system, all switched on
ESX10-124/-127 channels remain
unaffected. With type ESX10-125 the reset
only affects the device concerned. By
connecting the individual terminals 12 of
the Module 17plus a joint reset signal for
all ESX10-125 may be generated.
Control input IN+ ESX10-115
Electrical data see reset input RE
Control signal IN+ +24 V level (HIGH): device will be switched
on by a remote ON/OFF signal
0 V level (LOW): device will be switched
off by a remote ON/OFF signal
Switch S1 ON/OFF unit can only be switched on with S1 if a
HIGH level is applied to IN+
General data
Fail-safe element: backup fuse for ESX10 not required
because of the integral
redundant fail-safe element
Blade terminals 6.3 mm to DIN 46244-A6.3-0.8
Housing moulded
Mounting plug-in mounting utilising power distribution
system Module 17plus or SVSxx
Ambient temperature 0...+50 °C
(without condensation, see EN 60204-1)
Storage temperature -20...+70 °C
Humidity 96 hrs/95 % RH/40 °C to
IEC 60068-2-78, test Cab.
climate class 3K3 to EN 60721
Vibration 3 g, test to IEC 60068-2-6 test Fc
Degree of protection housing: IP30 DIN 40050
terminals: IP00 DIN 40050
EMC emission: EN 61000-6-3
(EMC directive, CE logo) susceptibility: EN 61000-6-2
Insulation co-ordination 0.5 kV/2 pollution degree 2
(IEC 60934) re-inforced insulation in operating area
dielectric strength max. DC 32 V (load circuit)
Insulation resistance
(OFF condition) n/a, only electronic disconnection
Approvals UL 2367, File # E306740
Solid State Overcurrent Protectors
UL 508, File # E322549
CSA C22.2 No: 14, File 16186
CE logo
Dimensions (W x H x D) 12.5 x 70 x 60 mm
Mass approx. 40 g
Table 1: voltage drop, current limitation, max. load current
current rating typically voltage drop active current max. load current at 100 % ON duty
IN UON at IN limitation (typically) TU = 40 °C TU = 50 °C
0.5 A 70 mV 1.8 x IN 0.5 A 0.5 A
1 A 80 mV 1.8 x IN 1 A 1 A
2 A 130 mV 1.8 x IN 2 A 2 A
3 A 80 mV 1.8 x IN 3 A 3 A
4 A 100 mV 1.8 x IN 4 A 4 A
6 A 130 mV 1.8 x IN 6 A 5 A
8 A 120 mV 1.5 x IN 8 A 7 A
10 A 150 mV 1.5 x IN 10 A 9 A
12 A 180 mV 1.3 x IN 12 A 10.8 A
Attention: when mounted side-by-side without convection the ESX10-0.. should not
carry more than 80 % of its rated load with 100 % ON duty due to thermal effects.
Electronic Circuit Protector ESX10
Issue C 5 - 29
5
B(190110) Ordering information
Type No.
ESX10 Electronic Circuit Protector for DC 24 V applications
Version
1 standard, without physical isolation in the event of a failure
Signal input
0 without signal input
1 with control input IN+, only ESX10-115
2 with reset input RE, only ESX10-124, ESX10-125, ESX10-127
Signal outputs
0 without, only ESX10-100
1 signal output F (single signal, N/O), only ESX10-101
2 signal output F (single signal, N/C), only ESX10-102
3 signal output F (group signal, change-over), only ESX10-103
4 status output SF (+24 V = OK),
only ESX10-104, ESX10-124
5 signal output F (group signal, N/O),
ESX10-105, ESX10-115, ESX10-125
6 signal output F (group signal, N/O),
status output SF +24 V = OK, only ESX10-106
7 status output inverted, 0 V = OK, only ESX10-127
Operating voltage
DC 24 V rated voltage DC 24 V
Current rating
0.5 A
1 A
2 A
3 A
4 A
6 A
8 A
10 A
12 A
ESX10 - 1 0 5 - DC 24 V - 6 A ordering example
Terminal wiring diagram ESX10-124
ESX10-124-…
Rsense Failsafe
LINE (+)
DC 24 V
LOAD (+)
load output
GND (-)
SF status output
RE reset input
RE reset input
status indication
green/orange/red
S1
ON/OFF
electronic control unit
Schematic diagram ESX10-124
ESX10
Elektronischer Sicherungsautomat
Electronic Circuit Protector
ESX10-1xx-DC 24 V-xxA
Germany
1
11
2
13
14
12
LINE +
GND
LOAD +
RE
RE
SF
Status OUT
Reset IN
Failsafe
UL 2367
cUL 508
Please note:
â—� The user should ensure that the cable cross sections of the relvant
load circuit are suitable for the current rating of the ESX10 used.
â—� Automatic start-up of machinery after shut down must be prevented
(Machinery Directive 98/37/EG and EN 60204-1). In the event
of a short circuit or overload the load circuit will be disconnected
electronically by the ESX10.
Description of ESX10 signal inputs and outputs (wiring diagrams)
see next page.
Table 2: ESX10 - product version
version signal input signal output
signal output F status output SF
ESX10 -... control input
ON/OFF +24 V
Control IN+
reset input
+24 V
RE
single signal
N/O
single signal
N/C
group signal
N/O
group signal
change-over
status OUT
+24 V = OK
status OUT
0 V = OK
-100
-101 x
-102 x
-103 x
-104 x
-105 x
-106 x x
-115 x x
-124 x x
-125 x x
-127 x x
Electronic Circuit Protector ESX10
5 - 30 Issue C
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ESX10 Signal inputs / outputs (wiring diagram)
Failsafe
1 LINE +
11 GND
2 LOAD +
13 RE
14 RE
12 SF
Status OUT
Reset IN
ESX10-124-...
with reset input RE (+DC 24 V↓)
with status output SF (+24V = load output ON)
Failsafe
1 LINE +
11 GND
2 LOAD +
13 SC
14 SO
12 SI
Signal
ESX10-101
without signal input
with signal output F (single signal, N/O)
operating condition: SC/SO-SI closed
fault condition: SC/SO-SI open
Failsafe
1 LINE +
11 GND
2 LOAD +
13 SC
14 SO
12 SI
Signal
ESX10-102
without signal input
with signal output F (single signal, N/C)
operating condition: SC/SO-SI open
fault condition: SC/SO-SI closed
Failsafe
1 LINE +
11 GND
2 LOAD +
13 SC
14 SO
12 SI
Signal
ESX10-103
without signal input
with signal output F (group signal, change-over)
operating condition: SC/SO closed, SC-SI open
fault condition: SC/SO open, SC-SI closed
Failsafe
1 LINE +
11 GND
2 LOAD +
13 SC
14 SO
ESX10-104
without signal input
with status output SF (+24 V = load output ON)
12 SF Status OUT
Failsafe
1 LINE +
11 GND
2 LOAD +
13 SC
14 SO
Signal
ESX10-105
without signal input
with signal output F (group signal, N/O)
operating condition: SC-SO closed
fault condition: SC-SO open
Failsafe
1 LINE +
11 GND
2 LOAD +
13 SC
14 SO
Signal
12 SF
Status OUT
ESX10-106
without signal input
with signal output F (group signal, N/O)
with status output SF (+24 V = load output ON)
operating condition: SC-SO closed
fault condition: SC-SO open Failsafe
1 LINE +
11 GND
2 LOAD +
13 SC
14 SO
Signal
12 IN +
Control IN
ESX10-115-...
with control input IN+ (+DC 24 V)
with signal output F (group signal, N/O)
operating condition: SC-SO closed
fault condition: SC-SO open
Failsafe
1 LINE +
11 GND
2 LOAD +
13 SC
14 SO
Signal
12 RE
Reset IN
ESX10-125-...
with reset input RE ( +DC 24 V ↓)
with signal output F (group signal, N/O)
operating condition: SC-SO closed
fault condition: SC-SO open
ESX10 signal inputs / outputs (wiring diagrams)
Signal contacts are shown in the OFF or fault condition.
Failsafe
1 LINE +
11 GND
2 LOAD +
13 RE
14 RE
12 SF
Status OUT
Reset IN
ESX10-127-...
with reset input RE (+DC 24 V ↓)
with status output SF inverted, 0V = load output ON
operating condition: SF 0V = OK
fault condition: SF +24 V
Failsafe
1 LINE +
11 GND
2 LOAD +
ESX10-100
without signal input/output
13
14
operating condition: SF +24 V = OK
fault condition: SF 0V
operating condition: SF +24V = OK
fault condition: SF 0V
Electronic Circuit Protector ESX10
Issue C 5 - 31
5
disconnection
typically 1.1 x IN
current limitation
typically 1.8 x IN
*1)
IK
10000
1000
1 2 4
trip time in seconds
...times rated current
100
10
1
0.1
0.01
0 3 5
1.8 x IN
*1)
5
Time/Current characteristic curve (TA = 25 °C)
Table 3: Reliable trip of ESX10
*1) current limitation typically 1.8 x IN times rated current at IN = 0.5 A...6 A
current limitation typically 1.5 x IN times rated current at IN = 8 A or 10 A
current limitation typically 1.3 x IN times rated current at IN = 12 A
â—� The trip time is typically 3 s in the range between 1.1 and 1.8 x IN
*1).
â—� Electronic current limitation occurs at typically 1.8 x IN
*1) which
means that under all overload conditions (independent of the
power supply and the resistance of the load circuit) the max.
overload before disconnection will not exceed 1.8 x IN
*1) times
the current rating. Trip time is between 100 ms (short circuit
current IK) and 3 sec (at overload with high line attenuation).
â—� Without this current limitation a considerably higher overload
current would flow in the event of an overload or short circuit.
Reliable trip of ESX10 with different cable lengths and cross sections
Resistivity of copper �0 = 0.0178 (Ohm x mm2) / m
US = DC 19.2 V (= 80 % v. 24 V) voltage drop of ESX10 and tolerance of
trip point (typically 1.1 x IN = 1.05 ... 1.35 x IN) have been taken into account.
ESX10-selected rating IN (in A) 3 6
e. g. trip current Iab = 1.25 x IN (in A) 3.75 7.5 ESX10 trips after 3 s
Rmax in Ohm = (US / Iab) - 0.050 5.07 2.51
The ESX10 reliably trips from 0 Ohm to max. circuitry resistance Rmax
Cable cross section A in mm2 0.14 0.25 0.34 0.5 0.75 1 1.5
cable length L in meter cable resistance in Ohm = (R0 x 2 x L) / A
(= single length)
5 1.27 0.71 0.52 0.36 0.24 0.18 0.12
10 2.54 1.42 1.05 0.71 0.47 0.36 0.24
15 3.81 2.14 1.57 1.07 0.71 0.53 0.36
20 5.09 2.85 2.09 1.42 0.95 0.71 0.47
25 6.36 3.56 2.62 1.78 1.19 0.89 0.59
30 7.63 4.27 3.14 2.14 1.42 1.07 0.71
35 8.90 4.98 3.66 2.49 1.66 1.25 0.83
40 10.17 5.70 4.19 2.85 1.90 1.42 0.95
45 11.44 6.41 4.71 3.20 2.14 1.60 1.07
50 12.71 7.12 5.24 3.56 2.37 1.78 1.19
75 19.07 10.68 7.85 5.34 3.56 2.67 1.78
100 25.34 14.24 10.47 7.12 4.75 3.56 2.37
125 31.79 17.80 13.09 8.90 5.93 4.45 2.97
150 38.14 21.36 15.71 10.68 7.12 5.34 3.56
175 44.50 24.92 18.32 12.46 8.31 6.23 4.15
200 50.86 28.48 20.94 14.24 9.49 7.12 4.75
225 57.21 32.04 23.56 16.02 10.68 8.01 5.34
250 63.57 35.60 26.18 17.80 11.87 8.90 5.93
Example 1: max. length at 1.5 mm2 and 3 A 214 m
Example 2: max. length at 1.5 mm2 and 6 A 106 m
Example 3: mixed wiring: R1 = 40 m in 1.5 mm2 and R2 = 5 m in 0.25 mm2:
(Control cabinet – sensor/actuator level) R1 = 0.95 Ohm, R2 = 0.71 Ohm Total (R1 + R2) = 1.66 Ohm
Electronic Circuit Protector ESX10
5 - 32 Issue C
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Dimensions
12.3
operating area
blade terminals
DIN 46244-6.3-0.8
mounting area
60
10.3 70
50
6x6.8=40.8
6.8
reverse plug-in
protection
off
6A
ok
on
2.36
.405 2.75
.267
6x.267=1.60
1.97
.484
This is a metric design and millimeter dimensions take precedence ( mm )
inch
All dimensions without tolerances are for reference only. In the interest of improved design,
performance and cost effectiveness the right to make changes in these specifications without
notice is reserved. Product markings may not be exactly as the ordering codes. Errors and
omissions excepted.
ESX10 - Accessories: Module 17plus
Issue C 5 - 33
5 ESX10-124 Modul
17 plus
LINE (+) (1)
GND (11)
RE (13)