ESX10-TD Datasheet, PDF (1/14 Pages) ETAL Group – Selective load protection, electronic trip characteristics

Electronic Circuit Protector ESX10-T.-DC 24 V
Description
Electronic circuit protector type ESX10-T 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-T responds much faster
to overload 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 75,000 µF, but they are disconnected only
ESX10-TD
in the event of an overload or short circuit.
For optimal alignment with the characteristics of the application the
current rating of the ESX10-T can be selected in fixed values from
0.5 A...12 A or in adjustable ratings e.g. [2 A/4 A/6 A]. Failure and status
Technical data (Tambient = 25 °C, operating voltage US = DC 24 V)
indication are provided by a multicolour LED and an integral short-
circuit-proof status output or a potential-free signal contact. Remote Operating data
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 of individual load circuits.
Operating voltage U_S
Current rating I_N
DC 24 V (18...32 V)
fixed current ratings:
Type ESX10-TA-... and -TB-...:
The ESX10-T, with a width of only 12.5 mm, can be snapped onto
symmetrical rails 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 load circuit can be re-activated via the remote
electronic reset input, control input or manually by means of the
ON/OFF button.




Closed current I₀

Status indication
0.5, 1 A, 2 A, 3 A, 4 A, 6 A, 8 A, 10 A, 12 A
adjustable ratings:
Type ESX10-TD-...:
[0.5 A/1 A/2 A], [2 A/4 A/6 A], [6 A/8 A/10 A]
Type ESX10-TD-101-...:
[2 A/3 A/4 A]
ON condition: typically 20...30 mA
depending on signal output
l multicolour LED:
US patent number: US 6,490,141 B2
US patent number: US 8,237,311 B2
by means of
Green:
- unit is ON, power-MOSFET
is switched on
Features
- status output SF ON,
supplies + DC 24 V
4
Orange:
- in the event of overload or short
l Selective load protection, electronic trip characteristics.
l Suitable for all kinds of loads (DC 24 V motors upon request)
l Active current limitation for safe connection of capacitive loads
up to 75,000 µF and on overload/short circuit.
l ESX10-TA/-TB:
Current ratings 0.5 A...12 A
ESX10-TD:
adjustable ratings [0.5 A/1 A/2 A], [2 A/3 A/4 A], [2 A/4 A/6 A]
circuit until electronic disconnection
Red:
- unit electronically disconnected
- load circuit/Power-MOSFET OFF
OFF:
- manually switched off (S1 = OFF)
or device is dead

- undervoltage  (U_S < 8 V)
- after switch-on till the end
and [6 A/8 A/10 A]
of the delay period
l Reliable overload disconnection with 1.1 x I_N plus, even with long
load lines or small cable cross sections (see table 3).
l Manual ON/OFF button (S1).

l status output SF (option)
l potential-free signal contact F (option)
l ON/OFF/ condition of switch S1
l Control input IN+ for remote ON/OFF signal (option).
Load circuit
l Electronic reset input RE (option).
Load output
Power-MOSFET switching output
l Clear status and failure indication through LED, status output SF
(high side switch)
or Si contact F.
l Integral fail-safe element adjusted to current rating.
l Width per unit only 12.5 mm.
l Rail mounting
l Ease of wiring through busbar LINE+ and 0 V as well as signal bars
and bridges.
l Additional versions with ATEX approval available.
Marking: II 3G Ex nA IIB T4 Gc X
ESX10-TA-...-E and ESX10-TB-...E
Please observe separate operating instructions:
Overload disconnection
Short-circuit current I_K



Trip characteristic
Trip thresholds/trip times
(t₁, t₂) at overcurrent
(I_Limit see table 1)

typically 1.1 x I_N (1.05...1.35 x I_N)
Active current limitation with
I_Limit = typically 1.8/1.5/1.4/4.3 x I_N,
I_Limit depending on I_N
(typical I_Limit - values see table 1)
active current limitation (see table 1)
1. threshold:
at I_load> typically 1.1 x I_N...I_Limit:
t₁ = typically 3s.
2. threshold:


at I_load = I_Limit:
t₂ = typically 100 ms...3 s.
Temperature disconnection internal temperature monitoring with

electronic disconnection
Low voltage monitoring
load output
with hysteresis, no reset required
load “OFF” at U_S < 8 V
1642
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