E-1072-220 Datasheet, PDF (1/4 Pages) ETAL Group – Voltage rating DC 24 V (19.2...36 V)

Solid State Remote Power Controller E-1072-2...
Description
The E-T-A Solid State Remote Power Controller E-1072-2.. complies
with the EC Machinery Directive 98/37/EG and meets the requirements
of EN60204 part 1 “Electrical equipment of machinery, safety of
machinery” in ungrounded DC 24 V supply systems (“IT systems”).
The E-1072-2.. is a double pole electronic switching amplifier for
magnetic valves (hydraulic and pneumatic mechanisms), magnetic
brakes and magnetic couplings with rated voltage DC 24 V and a max.
current rating of 1 A or 2 A. It combines true circuit breaker characteristics
with additional diagnostic functions.
Why use the E-1072-2..
E-1072-220
l for double pole switching of actuators (magnetic valves, magnetic
brakes) in machinery and equipment
l for monitoring the electronic function of the loads and signal to the PLC
l for preventing a voltage dip of the DC 24 V output voltage in a
Technical Data (T_U = 25 °C, U_S = DC 24 V) (T_U = ambient temperature at U_N)
switch-mode power supply, in the event of a short circuit, as a true
2 pole, remotely controllable electronic circuit breaker
l for protecting the cables of the load circuit
l for status signalling and for visually indicating load circuit
faults (LEDs or RED trip button) via potential-free signal contacts
l for double-pole physical isolation of the load circuit –­ manually
or electrically in the event of a failure (short circuit/overload)
Voltage rating U_N
DC 24 V
Operating voltage U_S
DC 19.2...36 V
Current rating I_N
max. 1 A or 2 A
Current consumption I₀ typically 25 mA
(U_Contr = “0”)
Power loss P_max (I_N= 1 A) typically 1.6 W
Residual ripple for all voltages max. 5 % (3 phase bridge)
Features
Reverse polarity protection U_S integral -> fault release, LEDs not

lighting

Caution: Ensure free travel of actuator
l Voltage rating DC 24 V (19.2...36 V)
l Current rating I_N max. 1 A or 2 A (min. load current 30 mA)
l Activates and monitors DC 24 V magnetic valves
l PLC controllable 2 pole remote power controller with physical
isolation of control input

Insulation voltage


Load Circuit
button.
AC 500 V (control circuit, load circuit,
fault indication “Err1” and “Err2”)
indication “BM”
- Switching output with integral current limitation to 2 x I_N
Load output
two pole switching output (minus and
- Disconnection of load in the event of short circuit or overload,
(term. 31-term. 32)
plus switching), MOS transistors
followed by double pole physical isolation of load
Max. load data
DC 24 V/1 A or 2 A (no derating over the
- Permanent wire break monitoring of load circuit

entire temperature range!)
- Group fault signalisation via relay contact “Err1”
Min. load data
DC 24 V / 50 mA (wire break
- Additional signal contact “Err2” when integral circuit breaker

threshold 30 mA)
has tripped due to short circuit or overload in the load circuit
Voltage drop at I_N (with IN=1 A) typically 0.8 V
- LED displays: LED green: OK
Switching times (t_on/t_off) typically 1 ms (resistive load)


LED red: Error
LED yellow In/Ctrl (control current indication)
Overload disconnection
Trip time (I_load = 1.5 x I_N)
approx 1.15 x I_N
typically 1 s
5
- Integral reverse polarity protection and overload protection for
Short-circuit current I_K
typically 2 x I_N current limitaton
control and load circuit
Trip time (upon I_K)
typically 300 ms at I_N = 1 A,
- No back-up fuse required due to integral fail-safe element

100 ms at I_N = 2 A, 2-pole isolation of
- Track-mountable, width 22.5 mm

load circuit after approx. 20 ms
Additional feature E-1072-210
- additional “status indication” relay output to facilitate confirmation
to a PLC, for example, of activation and a load current > 30 mA.


Wire break monitoring

–> RED LED indicates, fault indication F
“Err1” and “Err2”
with the load switched on or off; RED LED
“Error” lighted, group fault signalisation
Additional feature E-1072-220
(see fig. “inrush current curve magnetic valves”)
- Analogue output 4-20 mA proportional to load current enables
permanent monitoring of magnetic valve circuits as well as
recording of the load current via ET200 sub-assemblies or field
bus modules (with analogue input). In addition it is possible to
check the inrush current characteristic curve of a magnetic valve
to determine whether the armature of the valve has moved or is
stuck.

“Err1”

(U_Contr= “0”) wire break threshold Rload > 30 kΩ

(U_Contr= “1”) minimum current Iload < 30 mA
Supervision of load circuit with the load switched on, the load

current is monitored via the two

switching outputs GREEN LED indicates

(OK signal), I_load > 30 mA
Leakage current (U_Contr = “0”) typically 1 mA
Free-wheeling circuitry
integral
Load current measurement no isolation of load circuit required as a
(term. 33: +shunt/
term. 34: -shunt)
I_N = 1 A: 0.2 Ω/1 %, I_N = 2 A: 0.1 Ω/1 %
measuring shunt is integral with the device.

Measurement by voltmeter terminal 33 -

Isolation of load circuit
terminal 34 (200 mV = I_N)
2-pole by relay contacts

- by manual release of RED button

- approx. 20 ms after electronic tripping
due to overload or short circuit (“OFF”)
1646
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