I n t ro d u c t i o n — E l e c t ro n i c C i rc u i t P ro t e c t i o n E S X 1 0 - T
Electronic circuit protection type ESX10-T
is designed to ensure selective discon-
nection of 24VDC load systems.
24VDC 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 disconnec-
tion of all loads.
Through selective disconnection the
ESX10-T responds much faster to over-
load or short circuit conditions than
the switch-mode power supply. This is
achieved by active current limitation.
The ESX10-T limits the highest possible
current to 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,
but they are discon-
nected only in the event of an overload
or short circuit.
For optimal alignment with the character-
istics of the application the current rating
of the ESX10-T 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 relay signal
contact. Remote operation is possible
by means of a remote reset signal or
a remote ON/OFF control signal.
The manual ON/OFF button allows
separate actuation and reset of
individual load circuits.
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 load
circuit can be re-activated via the
remote electronic reset input, control
input or manually by means of the
ON/OFF button.
Features
• Selective load protection, electronic trip
characteristics
• Active current limitation for safe connec-
tion of capacitive loads up to 20,000
μF
and on overload/short circuit
• Current ratings 0.5 A...12 A
• Reliable overload disconnection with
1.1 x In plus, even with long load lines or
small cable cross sections (see table 3)
• Manual ON/OFF button (S1)
• Control input IN+ for remote ON/OFF
signal (option)
• Electronic
reset
input RE (option)
• Clear status and failure indication
through LED, status output SF or
Si contact F
• Integral fail-safe element adjusted
to current rating
• Width per unit only 12.5 mm
• Rail mounting
• Ease of wiring through busbar LINE+
and 0 V as well as signal bars and
bridges
• UL/CSA Hazardous area approved–
Class 1, Div 2
42
E l e c t ro n i c C i rc u i t P ro t e c t i o n E S X 10 - T
Approvals
Authority
UL2367 (E306740)
UL1604 (E322549)
(class 1, div. 2, group A, B, C, D)
UL508/ cUL 508
CSA file 165971:
CSA C22.2 No: 213 (class I, div. 2)
Groups A, B, C, D, T5
CSA C22.2 No: 142
Class 2
Meets requirements for Class 2 current limitation
(ESX10-T... 0.5 A / 1 A / 2 A / 3 A
Voltage rating
24VDC
24VDC
24VDC
24VDC
24VDC
Current ratings
0.5...12 A
0.5...12 A
0.5...12 A
0.5...12 A
Status OUT
0.5...12 A
Technical data
Status output SF
Electrical data
(Tambient = 40°C, operating voltage Ub = 24VDC)
ESX10-TB-114/-124/
plus-switching signal output,
connects Ub to terminal 12 of module 17plus
nominal data: 24VDC / max. 0.2 A (short circuit proof)
status output is internally connected to
GND with a 10 kOhm resistor
ESX10-TB-114/-124 (signal status OUT),
at Ub = +24 V
+24 V = S1 is ON, load output connected through
0V = S1 is ON, load output blocked and/or
switch S1 is OFF
red LED lit
0 V level at status output when:
• switch S1 is in ON position, but device is
still in switch-on delay
• switch S1 is OFF, or control signal OFF,
device is switched off
• no operating voltage Ub
ESX10-TB-101/-102
potential-free signal contact
max. 30VDC/0.5 A, min. 10 V/10 mA
voltage Ub applied, switch S1 is in ON position
no overload, no short circuit
• device switched off (switch S1 is in OFF position)
• no voltage Ub applied
overload condition > 1.1 x In up to
electronic disconnection
electronic disconnection upon
overload or short circuit
device switched off with control signal
(switch S1 is in ON position)
single signal, make contact
contact SC/SO-SI open
single signal, break contact
contact SC/SO-SI closed
signal output fault conditions:
• no operating voltage Ub
• ON/OFF switch S1 is in OFF position
• red LED lighted
(electronic disconnection)
ESX10-TB-124
voltage: max. +32VDC
high > 8VDC
≤
32VDC
low
≤
3VDC > 0 V
power consumption typically 2.6 mA
(+24VDC)
min. pulse duration typically 10 ms
The electronically blocked ESX10-TB-124
may remotely be reset via an external
momentary switch due to the falling edge of
a +24 V pulse.
A common reset signal can be applied to
several devices simultaneously.
Switched on devices remain unaffected.
ESX10-TB-114
see reset input RE
+24V 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
unit can only be switched on with S1 if a
HIGH level is applied to IN+
OFF condition
Technical data
Operating data
Operating voltage Ub
Current rating In
Closed current I0
Status indication
by means of
(Tambient = 40°C, operating voltage Ub = 24VDC)
24VDC (18...32 V)
fixed current ratings: 0.5, 1 A, 2 A, 3 A, 4 A,
6 A, 8 A, 10 A, 12 A
ON condition: typically 20...30 mA
depending on signal output
•
multicolour LED:
GREEN: unit is ON, power-MOSFET
is switched on
- status output SF ON,
supplies + 24VDC
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 (Ub < 8 V)
- after switch-on till the end
of the delay period
• status output SF (option)
• potential-free signal contact F (option)
• ON/OFF/ condition of switch S1
Power-MOSFET switching output
(high side switch)
typically 1.1 x In (1.05...1.35 x In)
active current limitation (see table 1)
see time/current characteristics
typically 3 s at I
Load
> 1.1 x In
typically 3 s...100 ms at I
Load
> 1.8 x In
(or 1.5 x In/1.3 x In)
internal temperature monitoring with
electronic disconnection
Signal output F
Electrical data
ON condition LED green
OFF condition LED off
Fault condition LED orange
Fault condition LED red
ESX10-TB-101
ESX10-TB-102
Fault
Reset input RE
Electrical data
Load circuit
Load output
Overload disconnection
Short-circuit current IK
Trip time
for electronic disconnection
Reset signal RE
(terminal 22)
Temperature disconnection
Low voltage monitoring
load output
with hysteresis, no reset required
load “OFF” at Ub < 8 V
Starting delay t
start
typically 0.5 sec after every switch-on
and after applying Ub
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
Control input IN+
Electrical data
Control signal IN+
(terminal 21)
Switch S1 ON/OFF
43
E l e c t ro n i c C i rc u i t P ro t e c t i o n E S X 1 0 - T
Technical data
General data
Fail-safe element:
(Tambient = 40°C, operating voltage Ub = 24VDC)
Mounting
Ambient temperature
Storage temperature
Humidity
M4
20-6 AWG (0.5 - 10 mm
2
)
EMC
20-11 AWG (0.5 - 4 mm
2
)
20-13 AWG (0.5 - 2.5 mm
2
)
20-9 AWG (0.5 - 6 mm
2
)
10 mm
1.2 Nm
M3
23-13 AWG (0.25 – 2.5 mm
2
)
8 mm
0.5 Nm
Dimensions (W x H x D)
Mass
(EMC directive, CE logo)
Insulation co-ordination
(IEC 60934)
dielectric strength
Insulation resistance
(OFF condition)
Approvals
Vibration
Degree of protection
symmetrical rail to EN 50022-35x7.5
0...+50 °C (without condensation, see EN 60204-1)
-20...+70 °C
96 hrs/95 % RH/40 °C to IEC 60068-2-78-Cab
climate class 3K3 to EN 60721
3 g, test to IEC 68-2-6 test Fc
housing: IP20 DIN 40050
terminals: IP20 DIN 40050
emission: EN 61000-6-3
susceptibility: EN 61000-6-2
0.5 kV/2 pollution degree 2
re-inforced insulation in operating area
max. 32VDC (load circuit)
n/a, only electronic disconnection
UL2367, File E306740,
Solid State Overcurrent Protectors
UL1604 (class I, div. 2, zone 2), UL508, CE logo
CSA C22.2 No. 142 - file 165971, C22.2 No. 213 - file
165971, C1D2 Groups A, B, C, D, Temp Code T5;
Ambient 0°-40°C
12.5 x 80 x 83 mm
approx. 65 g
Terminals
screw terminals
max. cable cross section
flexible with wire end ferrule w/wo plastic sleeve
multi-lead connection
(2 identical cables)
rigid/flexible
flexible with wire end ferrule without plastic sleeve
flexible with TWIN wire end ferrule with plastic sleeve
wire stripping length
tightening torque (EN 60934)
Terminals
aux. contacts
screw terminals
max. cable cross section
flexible with wire end ferrule w/wo plastic sleeve
wire stripping length
tightening torque (EN 60934)
Housing material
moulded
backup fuse for ESX10-T not required
because of the integral
redundant fail-safe element
LINE+ / LOAD+ / 0V
Table 1:
voltage drop, current limitation, max. load current
current rating
In
0.5 A
1A
2A
3A
4A
6A
8A
10 A
12 A
typically voltage drop active current
Uon at In
limitation (typically)
70 mV
1.8 x In
80 mV
1.8 x In
130 mV
1.8 x In
80 mV
1.8 x In
100 mV
1.8 x In
130 mV
1.8 x In
120 mV
1.5 x In
150 mV
1.5 x In
180 mV
1.3 x In
max. load current at 100% ON duty
Tu = 40 °C
Tu = 50 °C
0.5 A
0.5 A
1A
1A
2A
2A
3A
3A
4A
4A
6A
5A
8A
7A
10 A
9A
12 A
10.8 A
Please note:
•
•
The user should ensure that the cable cross sections of the relevant load
circuit are suitable for the current rating of the ESX10-T used.
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-T.
•
Refer to UL/CSA file for proper wiring and installation techniques.
Attention: when mounted side-by-side without convection the ESX10-T should not carry more
than 80% of its rated load with 100% ON duty due to thermal effects.
Table 2: ESX10-T - Ordering Information
Version
without
Signal
Input
ESX10-TA-100
ESX10-TB-101
ESX10-TB-102
ESX10-TB-114
ESX10-TB-124
ESX10-TB-127
x
x
x
x
x
x
x
x
Signal input
Control input
ON/OFF Reset
Remote
Reset
without
Signal
Output
x
x
x
Signal output
Signal contact
single signal
single signal
N/O
N/C
(normally open NO)
(normally closed NC)
without
Signal
Output
x
x
x
x
x
x
Status output
Status OUT
Positive 24V
= OK
Status OUT
ØV = OK
ESX10-TA-100
Current
Rating
(amps)
0.5
1
2
3
4
6
8
10
12
Circuit
Protection
Part Number
6720005305
6720005301
6720005302
6720005303
6720005304
6720005306
6720005308
6720005310
6720005312
ESX10-TB-101
Current
Rating
(amps)
0.5
1
2
3
4
6
8
10
12
N/O
Contact
Part Number
6720005320
6720005321
6720005322
6720005323
6720005324
6720005326
6720005328
6720005330
6720005332
ESX10-TB-102
Current
Rating
(amps)
0.5
1
2
3
4
6
8
10
12
N/C
Contact
Part Number
6720005340
6720005341
6720005342
6720005343
6720005344
6720005346
6720005348
6720005350
6720005352
ESX10-TB-114*
Current
Rating
(amps)
0.5
1
2
3
4
6
8
10
12
Control
Input
Part Number
6720005360
6720005361
6720005362
6720005363
6720005364
6720005366
6720005368
6720005370
6720005372
ESX10-TB-124**
Current
Rating
(amps)
0.5
1
2
3
4
6
8
10
12
Reset
Input
Part Number
6720005380
6720005381
6720005382
6720005383
6720005384
6720005386
6720005388
6720005390
6720005392
ESX10-TB-127
Current
Rating
(amps)
0.5
1
2
3
4
6
8
10
12
Reset
Input
Part Number
6720005309
6720005319
6720005329
6720005339
6720005349
6720005369
6720005389
6720005399
6720005313
* Control force input on/off
** Reset input only to reset under fault conditions
44
E l e c t ro n i c C i rc u i t P ro t e c t i o n E S X 1 0 - T
ESX10-T Signal inputs / outputs (wiring diagram)
ESX10-TA-100
without signal input/output
ESX10-TB-101
without signal input
with signal output F
(single signal, N/O)
ESX10-TB-102
without signal input
with signal output F
(single signal, N/C)
ESX10-TB-114
with control input IN+
(+24VDC)
with status output SF
(+24 V = load output ON)
1
LINE+
1
LINE+
1
LINE+
1
LINE+
14
12
SF 23
13
11
IN 21
2
LOAD+
2
LOAD+
2
LOAD+
2
LOAD+
0V
3
0V
3
0V
3
0V
3
operating condition: 13-14 closed
fault condition:
13-14 open
operating condition: 11-12 open
fault condition:
11-12 closed
operating condition: SF +24 V = OK
fault condition:
SF 0 V
ESX10-TB-124
with reset input RE
(+24VDC
↓)
with status output SF
(+24 V = load output ON)
LINE+
1
ESX10-TB-127
with reset input RE
(+DC 24 V
↓)
with inverse status output SF
(0 V = load output ON)
LINE+
1
Dimensions
83
3.27
12.5
.492
LINE
SF 23
SF 23
LINE
2
LOAD+
2
LOAD+
LOAD
LOAD
0V
3
0V
80
3.15
3
operating condition: SF +24 V = O
fault condition:
SF 0 V
operating condition: SF 0 V = OK
fault condition:
SF +24 V
label
snap-on socket for
symmetrical rail EN 50022-35x7.5
mm
This is a metric design and millimeter dimensions take precedence ( inch )
80
3.15
RE 22
RE 22
45
E l e c t ro n i c C i rc u i t P ro t e c t i o n E S X 1 0 - T
Time/Current characteristic curve (Ta = 25 °C)
disconnection
typically 1.1 x I
n
1.8 x I
n
*1)
10000
1000
100
trip time in seconds
current limitation
*1)
typically 1.8 x I
n
10
5
1
0.1
0.01
0
1
2
3
...times rated current
*1)
current limitation typically 1.8 x I times rated current at I = 0.5 A...6 A
n
n
• The trip time is typically 3 s in the range between 1.1 and 1.8
x In
*1
).
• 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 and 3 sec
(depending on overload or at short circuit).
• Without this current limitation a considerably higher overload
current would flow in the event of an overload or short circuit.
4
5 IK
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
Table 3: Reliable trip of ESX10-T
Reliable trip of ESX10-T with different cable lengths and cross sections
Resistivity of copper
ρ
0
=
Ub = DC 19.2 V
(= 80 % of 24 V)
ESX10-T-selected rating In (in A)
e. g. trip current Iab = 1.25 x In (in A)
R
max
in Ohm = (Ub / I
ab
) - 0.050
The ESX10-T reliably trips from 0 Ohm to max. circuitry resistance R
max
Cable cross section
A
in mm
2
cable length
L
in meter
(= single length)
5
10
15
20
25
30
35
40
45
50
75
100
125
150
175
200
225
250
Example 1:
Example 2:
Example 3:
max. length at 1.5 mm
2
and 3 A
max. length at 1.5 mm
2
and 6 A
mixed wiring:
(Control cabinet – sensor/actuator level)
214 m
106 m
R1 = 40 m in 1.5 mm
2
and R2 = 5 m in 0.25 mm
2
:
R1 = 0.95 Ohm, R2 = 0.71 Ohm
Total (R1 + R2) = 1.66 Ohm
0.0178 (Ohm x mm
2
) / m
voltage drop of ESX10-T and tolerance of
trip point (typically 1.1 x In = 1.05 ...
1.35 x In
) have been taken into account.
3
3.75
5.07
6
7.5
2.51
0.14
0.25
0.34
0.5
0.75
1
1.5
ESX10-T trips after 3 s
cable resistance in Ohm = (R0 x 2 x L) / A
1.27
2.54
3.81
5.09
6.36
7.63
8.90
10.17
11.44
12.71
19.07
25.34
31.79
38.14
44.50
50.86
57.21
63.57
0.71
1.42
2.14
2.85
3.56
4.27
4.98
5.70
6.41
7.12
10.68
14.24
17.80
21.36
24.92
28.48
32.04
35.60
0.52
1.05
1.57
2.09
2.62
3.14
3.66
4.19
4.71
5.24
7.85
10.47
13.09
15.71
18.32
20.94
23.56
26.18
0.36
0.71
1.07
1.42
1.78
2.14
2.49
2.85
3.20
3.56
5.34
7.12
8.90
10.68
12.46
14.24
16.02
17.80
0.24
0.47
0.71
0.95
1.19
1.42
1.66
1.90
2.14
2.37
3.56
4.75
5.93
7.12
8.31
9.49
10.68
11.87
0.18
0.36
0.53
0.71
0.89
1.07
1.25
1.42
1.60
1.78
2.67
3.56
4.45
5.34
6.23
7.12
8.01
8.90
0.12
0.24
0.36
0.47
0.59
0.71
0.83
0.95
1.07
1.19
1.78
2.37
2.97
3.56
4.15
4.75
5.34
5.93
46
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