E-T-A ESX10-TA-DC 24 V Manuel d'instruction - Page 2

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Description

Electronic circuit protector type ESX10-T is designed to ensure

selective disconnection of DC 24 V load systems because it 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 20,000 µF, 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-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 potential-free 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 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.

Technical Data (T ambient = 25 °C, U S = DC 24 V)

Operating data

Operating voltage U

DC 24 V (18...32 V)

0.5 A, 1 A, 2 A, 3 A, 4 A, 6 A, 8 A, 10 A, 12 A

Current rating I

Closed current I

ON condition: typically 20...30 mA

depending on signal output

Status indication

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

Red:

- unit electronically disconnected

- load circuit/Power-MOSFET OFF

OFF:

- manually switched off (S1 = OFF) or

device is dead

- undervoltage (U

- after switch-on till the end of the delay

status output SF (option)

potential-free signal contact F (option)

ON/OFF/ condition of switch S1

Load circuit

Load output

Power-MOSFET switching output

(high side switch)

Overload disconnection

typically 1.1 x I

Short-circuit current I

Active current limitation with

Limit

(typical I

Trip characteristic

active current limitation (see table 1)

1. threshold:

Trip thresholds/trip times

, t

) at overcurrent

at I

table 1) t

2. threshold:

at I

Temperature

internal temperature monitoring with

disconnection

electronic disconnection

Low voltage monitoring

with hysteresis, no reset required

load output

load "OFF" at U

Starting delay t

typically 0.5 sec after every switch-on

start

and after applying U

Disconnection of load

electronic disconnection

circuit

Free-wheeling circuit

external free-wheeling diode

recommended with inductive load

Several load outputs must not be connected in parallel

Status output SF

ESX10-T.-114/-124/-127

Electrical data

plus-switching signal output, connects U

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

circuit until electronic disconnection

< 8 V)

period

(1.05...1.35 x I

)

= typically 1.8/1.5/1.4/4.3 x I

depending on I

- values see table 1)

Limit

> typically 1.1 x I

...I

: (I

load

Limit

= typically 3s.

= I

load

Limit

= typically 100 ms...3 s.

< 8 V

Technical Data (T ambient = 25 °C, U S = DC 24 V)

Status OUT

OFF condition

Signal output F

Electrical data

ON condition LED green

OFF condition LED off

Fault condition LED orange overload condition > 1.1 x I

Fault condition LED red

ESX10-TB-101

ESX10-TB-102

Fault

Reset input RE

Electrical data

Reset signal RE

terminal 22

Control input IN+

Electrical data

Control signal IN+

terminal 21

see

Switch S1 ON/OFF

LED display

General data

Fail-safe element

Terminals

screw terminals

max. cable cross section

rigid and flexible

flexible with wire end ferrule w/wo plastic sleeve

wire stripping length

tightening torque (EN 60934)

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 0.5 - 6 mm

- 2 -

ESX10-TB-114/-124 (signal status OUT),

at U

= +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 lighted

ESX10-TB-127 (signal status OUT inverted),

at U

= + 24 V

+ 24 V = S1 is ON, load output locked

red LED lighted

0 V = S1 is ON, load output connected and/

or switch S1 is OFF.

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 U

ESX10-T.-101/-102

potential-free signal contact

max. DC 30 V/0.5 A, min. 10 V/10 mA

oltage U

applied, switch S1 is in ON

position no overload, no short circuit

device switched off (switch S1 is in

OFF position)

no voltage U

applied

up to

electronic disconnection

electronic disconnection upon

overload or short circuit

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 U

ON/OFF switch S1 is in OFF position

red LED lighted

(electronic disconnection)

ESX10-T.-124/-127

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

The electronically blocked ESX10-

TB-124/-127 may remotely be reset via an

external momentary switch due to the fal-

ling edge of a +24 V pulse. A common reset

signal can be applied to several devices

simultaneously. Switched on devices remain

unaffected.

ESX10-T.-114

see reset input RE

+24V level (HIGH): device will be switched

(terminal 21) 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+

ON: LED green / OFF: LED red

backup fuse for ESX10-T not required

because of the integral redundant fail-safe

element

LINE+/LOAD+/0V

0,5 - 16 mm²

0.5 - 10 mm

10 mm

1.5 - 1.8 Nm

0.5 - 4 mm

0.5 - 2,5 mm