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Solid State Remote Power Controller E-1072-2...

1646

1

5

E-1072-220

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..

Features

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Voltage rating DC 24 V (19.2...36 V)

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Activates and monitors DC 24 V magnetic valves

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PLC controllable 2 pole remote power controller with physical

isolation of control input

- Disconnection of load in the event of short circuit or overload,

followed by double pole physical isolation of load

- Permanent wire break monitoring of load circuit

- Group fault signalisation via relay contact “Err1”

- Additional signal contact “Err2” when integral circuit breaker

has tripped due to short circuit or overload in the load circuit

- LED displays: LED green: OK

LED red:

Error

LED yellow In/Ctrl (control current indication)

- Integral reverse polarity protection and overload protection for

control and load circuit

- No back-up fuse required due to integral fail-safe element

- Track-mountable, width 22.5 mm

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.

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.

DC 24 V

DC 19.2...36 V

max. 1 A or 2 A

typically 25 mA

typically 1.6 W

Residual ripple for all voltages max. 5 % (3 phase bridge)

lighting

Caution: Ensure free travel of actuator

button.

Insulation voltage

AC 500 V (control circuit, load circuit,

fault indication “Err1” and “Err2”)

indication “BM”

Load Circuit

Load output

two pole switching output (minus and

(term. 31-term. 32)

plus switching), MOS transistors

Max. load data

DC 24 V/1 A or 2 A (no derating over the

entire temperature range!)

Min. load data

DC 24 V / 50 mA (wire break

threshold 30 mA)

typically 1 ms (resistive load)

Overload disconnection

typically 1 s

load circuit after approx. 20 ms

–> RED LED indicates, fault indication F

“Err1” and “Err2”

Wire break monitoring

with the load switched on or off; RED LED

“Error” lighted, group fault signalisation

“Err1”

Supervision of load circuit with the load switched on, the load

current is monitored via the two

switching outputs GREEN LED indicates

Free-wheeling circuitry

integral

Load current measurement no isolation of load circuit required as a

(term. 33: +shunt/

term. 34: -shunt)

measuring shunt is integral with the device.

Measurement by voltmeter terminal 33 -

Isolation of load circuit

2-pole by relay contacts

- by manual release of RED button

- approx. 20 ms after electronic tripping

due to overload or short circuit (“OFF”)

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for double pole switching of actuators (magnetic valves, magnetic

brakes) in machinery and equipment

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for monitoring the electronic function of the loads and signal to the PLC

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for preventing a voltage dip of the DC 24 V output voltage in a

switch-mode power supply, in the event of a short circuit, as a true

2 pole, remotely controllable electronic circuit breaker

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for protecting the cables of the load circuit

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for status signalling and for visually indicating load circuit

faults (LEDs or RED trip button) via potential-free signal contacts

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for double-pole physical isolation of the load circuit – manually

or electrically in the event of a failure (short circuit/overload)