E-T-A ESX10-TA-DC 24 V, Instruction Manual

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1 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.
2 Technical Data (Tambient = 25 °C, US = DC 24 V)
Operating data
Operating voltage U
S
DC 24 V (18...32 V)
Current rating I
N
0.5 A, 1 A, 2 A, 3 A, 4 A, 6 A, 8 A, 10 A, 12 A
Closed current I
0
ON condition: typically 20...30 mA
depending on signal output
Status indication
by means of
l
multicolour LED:
Green:
- unit is ON, power-MOSFET
is switched on
- status output SF ON, su 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 (U
S
< 8 V)
- after switch-on till the end of the delay
period
l
status output SF (option)
l
potential-free signal contact F (option)
l
ON/OFF/ condition of switch S1
Load circuit
Load output
Power-MOSFET switching output
(high side switch)
Overload disconnection typically 1.1 x I
N
(1.05...1.35 x I
N
)
Short-circuit current I
K
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)
Trip characteristic active current limitation (see table 1)
Trip thresholds/trip times
(t
1
, t
2
) at overcurrent
1. threshold:
at I
load
> typically 1.1 x I
N
...I
Limit
: (I
Limit
see
table 1) t
1
= typically 3s.
2. threshold:
at I
load
= I
Limit
:
t
2
= 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
Starting delay t
start
typically 0.5 sec after every switch-on
and after applying U
S
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
Status output SF
ESX10-T.-114/-124/-127
Electrical data plus-switching signal output, connects U
S
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-TB-114/-124 (signal status OUT),
at U
S
= +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
Status OUT ESX10-TB-127 (signal status OUT inverted),
at U
B
= + 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.
OFF condition 0 V level at status output when:
l
switch S1 is in ON position, but device is
still in switch-on delay
l
switch S1 is OFF, or control signal OFF,
device is switched off
l
no operating voltage U
S
Signal output F ESX10-T.-101/-102
Electrical data potential-free signal contact
max. DC 30 V/0.5 A, min. 10 V/10 mA
ON condition LED green oltage U
S
applied, switch S1 is in ON
position no overload, no short circuit
OFF condition LED off
l
device switched off (switch S1 is in
OFF position)
l
no voltage U
S
applied
Fault condition LED orange overload condition > 1.1 x I
N
up to
electronic disconnection
Fault condition LED red electronic disconnection upon
overload or short circuit
ESX10-TB-101 single signal, make contact contact
SC/SO-SI open
ESX10-TB-102 single signal, break contact
contact SC/SO-SI closed
Fault signal output fault conditions:
l
no operating voltage U
S
l
ON/OFF switch S1 is in OFF position
l
red LED lighted
(electronic disconnection)
Reset input RE ESX10-T.-124/-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
terminal 22
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.
Control input IN+ ESX10-T.-114
Electrical data see reset input RE
Control signal IN+
terminal 21
+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
Switch S1 ON/OFF unit can only be switched on with S1 if a
HIGH level is applied to IN+
LED display ON: LED green / OFF: LED red
General data
Fail-safe element
backup fuse for ESX10-T not required
because of the integral redundant fail-safe
element
Terminals LINE+/LOAD+/0V
screw terminals M4
max. cable cross section
rigid and flexible 0,5 - 16 mm²
flexible with wire end ferrule w/wo plastic sleeve 0.5 - 10 mm 2
wire stripping length 10 mm
tightening torque (EN 60934) 1.5 - 1.8 Nm
multi-lead connection
(2 identical cables)
rigid/flexible 0.5 - 4 mm 2
flexible with wire end ferrule without plastic sleeve 0.5 - 2,5 mm
2
flexible with TWIN wire end ferrule with plastic sleeve 0.5 - 6 mm 2
2 Technical Data (Tambient = 25 °C, US = DC 24 V)