Data Sheet

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REX12 Electronic Circuit Protector
1830
3
4
REX12 Electronic Circuit Protector
Enquire Enquiry of currently adjusted
adjusted current rating current rating, independent of the
with REX12D-TE2 operating mode (COM or standard),
possible for each channel directly on the
REX12D-TE2
Enquiry mode is started by pushing the
button between ≥ 2 seconds and < 5
seconds. After releasing the button, the
LED is RED for 333 ms to indicate start of
enquiry. Afterwards, the LED flashes
ORANGE in a pulse/break ratio of 1/2
with a frequency of 1 Hz to indicate the
adjusted current value. When the adjusted
current rating is reached, signalling re-
starts after the RED LED re-lights for 333
ms. The enquiry mode is left after the
adjusted current rating was signalled 5
times or by pressing the button. Visual
indication will now show again the current
operating condition.
The enquiry mode is possible in all operat-
ing conditions (ON, OFF, UNDERVOLTAGE
and TRIPPED).
Adjustment of The adjustment mode directly on the
current rating with REX12D-TE2 can only be activated in the
REX12D-TE2 standard mode
The adjustment mode is started per chan-
nel by pushing the button for ≥ 5 seconds.
After releasing the button, the LED is RED
for 333 ms to indicate start of adjustment.
The LED is blinking GREEN with a pulse/
break ratio of 1/4 at a frequency of 0.6
Hz for visual indication. After reaching
the max. adjustment value, signalling
re-starts. Overrun of the max. adjustment
value after 1 Ampere is indicated by the
RED LED (333 ms). The current rating to
be adjusted is adopted by pushing the
button during the blinking period of 1 A
up to the max. adjustment value. If for
instance the button is pushed after the
7
th
illumination of the GREEN LED, 7A is
adopted as current rating and visual indi-
cation again shows the current operating
condition. If the button is not pressed,
the adjustment mode is left after 5 times
signalling the current rating range without
a new current rating being adopted and
the visual indication returns to current
status indication.
The adjustment mode is possible in all
operating conditions (ON, OFF, UNDER-
VOLTAGE and TRIPPED).
Reset function a blocked load output (blocked by over-
load / short circuit) can externally be reset
by the ON/OFF momentary switch
Leakage current in load typically <1 mA
circuit in OFF condition
Capacitive loads up to 20,000 µF:
depending on: cable attenuation, power supply used,
load current and current rating
Free-wheeling diode external free-wheeling circuit at inductive
load (rating according to load)
Parallel connection of not allowed
several load outputs
Technical data (T
amb
= +23 °C, U
B
= DC 24 V) Technical data (T
amb
= +23 °C, U
B
= DC 24 V)
Status output SM status indicator in REX system
Electrical data minus switching signal output
Group signalling is implemented in
connection with EM12-T supply module
Terminals LOAD+
Push-in terminal PT 2.5 0.14 mm
2
... 2.5 mm
2
flexible
AWG24 – AWG14 rigid
stripping length 8 mm ... 10 mm
Dimensions (w x h x d) 12.5 x 80 x 98.5 mm
Mass
REX12-TA1-xxx 1-channel approx. 57 g
REX12-TB1-xxx 2-channel approx. 60 g
REX12-TA2-xxx 2-channel approx. 58 g
REX12D-TE2-xxx 2-channel approx. 62 g
General data REX / EM / PM
Housing material moulded
Mounting symmetrical rail to EN 60715-35x7.5
Ambient temperature -25 °C ... +60 °C T(without condensation,
cf. EN 60204-1)
Storage temperature -40 °C ... +70 °C
Mounting temperature +5° ... +60 °C
Humidity 96 hrs / 95% RH/40 °C to IEC 60068-2-
78-Cab climate class 3K3 to EN 60721
Altitude 2,000 m above sea level
3,000 m above sea level up to +55 °C
4,000 m above sea level up to +50 °C
Operation pressure 4 bar above atmospheric pressure
Corrosion 96 hrs. in 5 % salt mist to
only PM and EM accessories
IEC 60068-2-11 test Ka
Vibration 5 g test to IEC 60068-2-6, test Fc
Degree of protection (IEC 60529, DIN VDE 0470)
operating area REX12: IP30
terminal area
EM, PM: IP20
EMC requirements noise emission EN 61000-6-3
(EMC directive, CE logo) susceptibility: EN 61000-6-2
Insulation co-ordination (IEC 60934) 0.5 kV / pollution degree 2
Dielectric strength max. DC 30 V (load circuit)
Insulation resistance n/a, only electronic disconnection
(OFF condition)
Conformity CE marking