REX12D Electronic Circuit Protector
Description
The compact and flexible all-in-one solution REX consists of several
perfectly matched components. It comprises the EM12D-T / EM12-T
supply module for the plus and minus potential via a single or double
channel REX12D-T electronic circuit protector which can be mounted
side by side in any number and the PM12-T potential extension module
for plus and minus multiplication.
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 REX12D protection system and the EM12D interface
module. The system combines the well-proven quality of DC 24 V
overcurrent protection with the communication options of the IO link
And what is more: no additional accessories are required when
and Modbus RTU system. It allows complete transparency of the connecting the individual components electrically and mechanically.
DC24V power supply and provides all necessary information for a
This helps save time and money!
reliable production process in this plant sector.
US patent number: US 9,899,807 B2
The 12.5 mm wide modules feature a modular design with push-in
technology for wiring with press release buttons and allow no-tool
time-saving and maintenance-free wiring.
Features
Benefits
l
Control, diagnosis and monitoring via IO link and Modbus RTU
l Incr eases machine availability through high transparency and
l
Combination of supply modules, overcurrent protection and
remote diagnosis
power distribution l
Saves cost no further accessories required
l
Selective load protection by means of electronic trip curve l
Saves 50 % time thr ough innovative and flexible mounting and
l
No accessories required for connecting the components
connection technology
l
Width per channel only 6.25 mm (2-channel) l
Saves space with a width of only 12.5 mm per channel
l
Fixed and adjustable current ratings 1 A-10 A l
Provides flexibility through ease of mounting, disassembly and
l
Integral fail-safe element, adjusted to max. current rating
modular design
l
Switching capacitive loads up to 20,000 F
l Reduces storage costs because only one product is required for
l
Manual ON/OFF/reset momentary switch
all current ratings
l
Connection via push-in terminals including press release buttons
Approvals Data sheet
The current data sheet is available on our website: www.e-t-a.de/e751
NEC Class2
Compliances
7
2010 www.e-t-a.de 1REX12D Electronic Circuit Protector REX12D Electronic Circuit Protector
Technical data (T = +23 C, U = DC 24 V) Technical data (T = +23 C, U = DC 24 V)
amb B amb B
REX12D-Txx-xxx circuit protectors
Fail-safe element I : 1 A/1 A (CL2) fail-safe I : 1 A / 1 A
N N
REX12D-TA1-100-DC24V-xA 1-channel
(integral I : 2 A/2 A (CL2) fail-safe I : 2 A / 2 A
N N
REX12D-TA2-100-DC24V-xA/xA 2-channel
blade fuse I : 3 A/3 A fail-safe I : 3.15 A / 3.15 A
N N
REX12D-TE2-100-DC24V-xA-xA 2-channel
adjusted to I : 3A/3A-CL2 fail-safe I : 4 A / 4 A
N N
The REX12D-TAx is operated in the COM mode with EM12D-T. The
related current rating I) I : 4 A/4 A fail-safe I : 4 A / 4 A
N N N
REX12D-TE2 can be operated both with EM12D-T or EM12-T. The
I : 4A/4A-CL2 fail-safe I : 4 A / 4 A
N N
operating mode EM12D-T (COM mode) or EM12-T (standard) is
I : 6 A/6 A fail-safe I : 6.3 A / 6.3 A
N N
recognised automatically. The following data exclusively refer to the
I : 8 A fail-safe I : 8 A
N N
COM mode.
I : 10 A fail-safe I : 10 A
N N
Operating voltage U DC 24 V (18...30 V)
B
I : 1 A-4 A-CL2 fail-safe I : 4 A
N N
Closed current I I : 1 A-10 A fail-safe I : 16A
0
N N
REX12D-TA1 1-channel in ON condition: typically 7 mA
Voltage drop in load circuit at I and at I 70% REX12D-TAx
N N
REX12D-TA2 2-channel in ON condition: typically 10 mA
between LINE+ and LOAD+
REX12D-TE2 1A-4A 2-channel in ON condition: typically 9 mA
I : 1 A (CL2) typically 180 mV I : 70 % typically 125 mV
N N
REX12D-TE2 1A-10A 2-channel in ON condition: typically 12 mA
I : 2 A (CL2) typically 110 mV I : 70 % typically 80 mV
N N
Reverse polarity protection Yes
I : 3 A typically 120 mV I : 70 % typically 85 mV
N N
Power failure
I : 3 A-CL2 typically 130 mV I : 70 % typically 90 mV
N N
buffering time up to 10 ms
I : 4 A typically 115 mV I : 70 % typically 80 mV
N N
Rated current I ratings: I : 4 A-CL2 typically 180 mV I : 70 % typically 120 mV
N N N
REX12D-TA1 8 A, 10 A
I : 6 A typically 170 mV I : 70 % typically 110 mV
N N
REX12D-TA2 1 A/1 A, 2 A/2 A, 3 A/3 A, 4 A/4 A, 6 A/6 A
I : 8 A typically 160 mV I : 70 % typically 105 mV
N N
REX12D-TE2 1 A-4 A, 1 A -10 A condition upon
I : 10 A typically 180 mV I : 70 % typically 120 mV
N N
delivery: max. current rating
Voltage drop in load circuit at I and at I 70% REX12D-TEx
N N
Visual status indication green: - load circuit connected
between LINE+ and LOAD+
of operating condition
by multicoloured green/orange
REX12D-TE2-100-DC24V-1A-4A-CL2
LED: blinking: - load current warning limit
I : 1A-CL2 typically 50 mV I : 70 % typically 42 mV
N N
reached 50 % 100 %
I : 2A-CL2 typically 90 mV I : 70% typically 70 mV
N N
I : 3A-CL2 typically 135 mV I : 70 % typically 95 mV
orange: - overload or short circuit until N N
I : 4A-CL2 typically 180 mV I : 70 % typically 120 mV
disconnection
N N
- circuit protector was switched
Voltage drop in load circuit at I and at I 70 % for
off by the superordinate control N N
REX12D-TEx between LINE+ and LOAD+
unit LED is permanently orange
REX12D-TE2-100-DC24V-1A-10A
red: - after disconnection due to
I : 1 A typically 30 mV I : 70 % typically 28 mV
overload or short circuit
N N
I : 2 A typically 39 mV I : 70 % typically 34 mV
N N
- after undervoltage release of
I : 3 A typically 48 mV I : 70 % typically 40 mV
N N
operating voltage in ON
I : 4 A typically 57 mV I : 70 % typically 46 mV
condition with autoreset N N
I : 5 A typically 66 mV I : 70 % typically 52 mV
N N
I : 6 A typically 74 mV I : 70 % typically 59 mV
N N
OFF Device was switched off via ON/
I : 7 A typically 83 mV I : 70 % typically 65 mV
N N
OFF momentary switch, or due
I : 8 A typically 92 mV I : 70 % typically 71 mV
N N
to lacking operating voltage or
I : 9 A typically 101 mV I : 70 % typically 77 mV
N N
faulty initialisation of the circuit
I : 10 A typically 110 mV I : 70 % typically 83 mV
protector
N N
Operating voltage OFF at typically U < 16.0 V
Load circuit
B
monitoring ON at typically U > 19 V
B
Load output power MOSFET switching output
with regard to low voltage with automatic ON and OFF switching
(plus switching)
ON delay
Load current - warning limit typically 0.5 - 1.0 x I (parameterisable)
N
- with power ON channel 1: typically 100 ms (REX12D-TAx)
(I )
WLimit
channel 2: typically 200 ms (REX12D-TAx)
hysteresis typically 5 %
channel 1: typically 1,500 ms (REX12D-TE2,
Overload current typically I : I x 1.05 t : 3s
OL N OL
depending on the slot)
disconnection (I ) typically I : I x 1.35 t : 0.5,5s
OL OL N OL
channel 2: typically 1,600 ms (REX12D-TE2,
with trip times (t ) typically I : I x 2.00 t : 0.1s
OL OL N OL
depending on the slot)
typically I : I x 2.50 t : 0.012 s
OL N OL
2)
short circuit typically at short circuit (I ) t : 0.002 s
SC SC
- when switching on by channel 1: typically 5 ms
trip time (t ) see time/current characteristic
SC
means ON/OFF button channel 2: typically 100 ms
Influence of ambient see temperature factor table
or
temperature on
- after channel 1: typically 5 ms
overload disconnection
undervoltage channel 2: typically 5 ms
and load current - warning limit
7
Disconnection of load circuit - manually on the device with the
Continuous Current IC typically 0.8 x I
N
ON/OFF momentary switch
(Fail Safe Element is protected by REX12)
- remote control via the superordinate
2) depending on power source
control unit
- after an overload / short circuit
disconnection with storage
(no automatic reset)
- temporarily at undervoltage
- at no operating voltage
2 www.e-t-a.de 2010