Electronic circuit protector REX12D
Description
The requirements regarding modern machinery and equipment are
constantly growing. System transparency, remote maintenance and
remote access are getting more and more important in international
competition. Early notification in the event of any disturbances and
a fast response to current problems will increase system availability,
save costs and improve the overall stability of the production process.
E-T-A provides the ideal solution for machine and panel builders with
the intelligent protection system comprising the REX12D-T circuit
protector and the EM12D interface module. The system combines
the well-proven quality of DC24V overcurrent protection with the
communication options of the IO link system. It allows complete
transparency of the DC24V power supply and provides all necessary
information for a reliable production process in this sector.
The 12.5 mm wide modules feature push-in technology for wiring
with press release buttons and allow no-tool time-saving and mainte-
nance-free wiring. The supply module is designed for DC 24 V and 40
A and accommodates max. 10 mm² with wire end ferrule as a plus (+)
supply. On the load output side the circuit protector can be wired
with 2.5 mm². It is exactly tailored to the needs of machine and panel
builders. And what is more: no additional accessories are required when
connecting the individual components electrically and mechanically.
This helps save time and money!
Technical data (T
= +23 °C, U = DC 24 V)
B
amb
REX12D-TAx-xxx circuit protectors
REX12D-TA1-100-DC24V-xA
REX12D-TA2-100-DC24V-xA/xA
1-channel
2-channel
Operating voltage UB
DC 24 V (18...30 V)
Closed-circuit current I0
REX12D-TA1 1-channel in ON condition:
REX12D-TA2 2-channel in ON condition:
typically 7 mA
typically 10 mA
Features
Reverse polarity protection yes
l
Power failure buffering time up to 10 ms
Control, diagnosis and monitoring via IO link
Combination of supply module and electronic circuit protector
Double channel selective load protection by means of electronic
l
Current ratings IN
REX12D-TA1
fixed ratings:
8 A, 10 A
l
REX12D-TA2
current ratings
2 A / 2 A, 4 A / 4 A, 6 A / 6 A
trip curve
l
No accessories required for connecting the components
l
Width per channel only 6.25 mm (2-channel)
Visual status indication
by LED
green:
load circuit connected
l
lꢀ
l
l
l
Fixed current ratings from 2 A, 4 A, 6 A, 8 A and 10 A
Integral fail-safe element, adjusted to current rating
Switching capacitive loads up to 20,000 µF
Manual ON/OFF/reset momentary switch
Connection via push-in terminals including press release buttons
green/orange
blinking:
load current warning limit
reached 50 % – 100 %
orange:
- overload reached, switch-off
delay depending on the load
current, active for max. 3 s
Benefits
- circuit protector was
switched off by the
superordinate control unit,
LED is permanently orange
lꢀ Increases machine availability through high transparency and
remote diagnosis
lꢀꢀ Saves cost – no further accessories equired
lꢀꢀ ꢀSaves time through innovative and flexible mounting and
connection technology
lꢀꢀ ꢀSaves space – with a width of only 6.25 mm per channel (2-channel)
lꢀꢀ ꢀProvides flexibility through ease of mounting, disassembly and
modular design
red:
- after disconnection due to
overload or short circuit
- after undervoltage release
of operating voltage in ON
condition with autoreset
Approvals and standards
OFF:
Device was switched off via
ON/OFF momentary switch,
or due to lacking operating
voltage or faulty initialisation
of the circuit protector
Approval
authority
Standard
Rated
Current
voltage
rating range
UL
UL
UL 2367
DC 24 V
2 A…10 A
2 A…10 A
Load circuit
UL60947 / cULus508listed DC 24 V
under preparation
Load output
power MOSFET switching output
(plus switching)
7
Load current warning limit typically 0.5 - 1.0 x IN (parameterisable)
(IWLimit
)
hysteresis
typically 5 %
Overload current
disconnection (IOL
with trip times (tOL
typically IOL: IN x 1.05
typically IOL: IN x 1.35
typically IOL: IN x 2.00
typically IOL: IN x 2.50
tOL: 3s
tOL: 0.5,5s
tOL: 0.1s
tOL: 0.012 s
tSC: 0.002 s1)
)
)
short circuit
typically at short circuit (ISC
)
trip time (tSC
)
see time/current characteristic
1) depending on the power source
1646
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