E-1071 Datasheet, PDF (1/6 Pages) ETAL Group – Designed for inductive loads (DC 24 V)

Solid State Remote Power Controller E-1071-623/627
Description
The E-T-A Solid State Remote Power Controllers E-1071-623/627
are electronic control modules suitable for inductive loads such as
electromagnetic valves (solenoids), magnetic brakes etc.
They are used:
• for safe and quick switching of loads
• for monitoring the electrical condition of the loads
• for compensating different cable lengths
The load connected to the relay should be operated with a higher voltage
(DC 28…60 V) than its rated voltage (DC 24 V) because the load current
is controlled electronically (pulse-controlled characteristics). This is
to ensure that in industrial plants with different cable lengths (supply
cables, load cables) an increased inrush current can be applied to
each load. During hold duty the load current is reduced to a smaller
value (approx. 60 % of the current rating), thus reducing the operating
E-1071-623
temperature and extending the life of the loads.
The double pole electronic switching output prevents inadvertent
start-up or dangerous machine movements as may arise upon a
ground fault in systems with ungrounded power supply (‘IT systems’)
Technical data (T_ambient = 25 °C, U_B = DC 48 V)
(see EC Machinery Directive or EN 60204 part 1 “Safety of Machinery
- Electrical Equipment of Machines”, para 9.4.3.1).
Rated voltage
DC 48 V
Operating voltage U_B
DC 28...60 V
(see Technical description)
Typical applications
Current rating I_N adjustable between 0.1...3.1 A via switch
and potentiometer on the front side
l Double pole switching of inductive actuators such as electromagnetic
valves or magnetic clutches in machinery and equipment
l Monitoring the electrical operability of loads
Current consumption I₀
(U_S = »0«)
Residual ripple for
all voltages
typically 16 mA
max. 5 % (3 phase bridge)
l Protection and monitoring of load circuit cables
l Status indication, failure indication in load circuit visually
(via LEDs or red tripped button) and via potentialfree status outputs
l Double pole split up of the load circuit manually or electrically in
the event of overload or short circuit
Reverse polarity protection U_B (terminals 1 and 2), integral
Fail Save
fuse
Insulation voltage
2.5 KV between load circuit, control circuit
and status signal circuit
Load circuit
Load output
NPN transistor, minus switching,
pulse-controlled (approx. 180 Hz)
Features
l Designed for inductive loads (DC 24 V)
Load rating
Switch-on current I_E
Holding current I_H
Short circuit
DC 24 V/adjustable between 0.1...3.1 A
up to 10 % more than pickup current
typically 60 % of the set rated current I_N
approx. 4.5 A
l Individual adjustment to various load currents
(standard: I_N = 0.1...3.1 A)
l Significant reduction of power loss in the load by pulse-controlled
characteristics
l Double pole switching output, short-circuit proof (short-circuit
disconnection current
Wire break monitoring
Physical isolation
Current measuring plugs
in the ON and OFF condition (RED LED)
2-pole in the load circuit,
by manual circuit breaker release
or after short circuit disconnection
2 x ø 2 mm (current proportional voltage:
limitation); physical disconnection from supply
1V=1A)
l Inrush current and holding current monitoring
l Physical isolation:
Free-wheeling circuitry
(see Technical description)
dinitsecg^ornanl eecletciotnronic ^{control with quick}
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- optocoupler in the control circuit
Control circuit
- physical disconnection of load circuit, manually or in the event
Control
optocoupler in control input
of a short circuit
- optocoupler for status outputs
l Reverse polarity and overvoltage protection in the control, load
and status circuits
l Control current indication by YELLOW LED
l O.K. indication by GREEN LED
l Wire break indication by RED LED (load circuit)
l Fault indication by RED LED
(short circuit, over/undervoltage, setting error)
l Two status outputs for PLCs for evaluation
(status indication, ON indication)
l Quick disconnection (do not connect a free-wheeling diode to the
load as the free-wheeling current is controlled electronically)
Break time < make time
Control voltage U_S
Control current I_S
Switching frequency f_max
Control signal (U_S = »1«)
Protection
»0« = DC 0…5 V
»1« = DC 8.5…35 V
typically 5...10 mA
1 Hz
YELLOW LED lights (I_control flowing)
reverse polarity protection (diode)
Status outputs
2 signal outputs
ON indication/function indication
- physically isolated by optocoupler
- transistor outputs, plus switching
- auxiliary voltage U_A: DC 12...60 V
- max. 50 mA per output
- integral free-wheeling diode
- reverse polarity and overvoltage
protection
ON indication
(terminal 8)
U_S = »0« : output non-conductive
< 70 ms switch-off signal delay
U_S = »1« : output connecting plus potential
(term. 10) to term. 8 only as long
as load current flows, not with
wire break or short circuit
< 15 ms switch-off signal delay
Function indication
fault: output non-conductive
(terminal 9)
no fault: output connecting plus potential
(terminal 10) to terminal 9
1646
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