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Germany (0 91 87) 10-0 - USA (847) 827-7600 - UK (01296) 420336 - www.etacbe.com
Issue C
ON
Terminal 8
Fault
Terminal 9
Remark
wire break or
load current < minimum current (switched on) or
short-circuit (switched on)
0
0
0
1
fault-free operation (switched off)
1
1
fault-free operation (switched on)
In principle, the E-T-A SSRPC E-1071-128 operates like conventional
electro-mechanical relays, with additional protective and signalling
functions. The control input replaces the magnetic coil and the power
transistor replaces the main contact.
ON and fault indication outputs have more complex functions and may
not be compared with auxiliary contacts.
Control circuit
The control current flows through the LED and the opto coupler
immediately a voltage higher than 8.5 V is applied at the input terminals
(6 and 7). The opto coupler transmits the signal to the load circuit, at the
same time switching the load transistor on. This signal is transmitted as
a status signal to all monitoring circuits. The input protection diode
protects the control voltage from incorrect polarization. Control current
limitation is provided by a constant current diode.
Load circuit
The load circuit is switched ON or OFF according to the control signal
(“0” or “1”), with electronic circuits monitoring the load circuit for faults
such as overload or short-circuit. Should one of these faults occur, the
monitoring circuitry will immediately react, causing the load transistor
to disconnect and the circuit breaker to trip. Transistor disconnection
occurs according to the storage time characteristics. The storage time
increases noise immunity avoiding disconnection of non-harmful peaks
such as those caused by inrush currents from lamp load connection.
Storage time is not a constant quantity but is inversely proportional to
the overcurrent factor.
Signal circuit
The signal circuit includes two opto couplers signalising either correct
ON duty or a fault. These signals may be computer processed.
- The ON signal output indicates correct operating in the ON condition.
This output is conductive
when control voltage is available
AND
AND
AND
the load current is higher than the set minimum current
the circuit breaker has not tripped
there is no wire break.
- The fault signal output signalises the fault source which must be
eliminated. This output is non-conductive when
the circuit breaker has tripped on overload or short-circuit
there is a wire break
control voltage is available AND the minimum current has not
been reached
no control voltage is applied although the load current is
available.
OR
OR
OR
The fault signal output operates on the closed-circuit principle, i.e. it
carries plus potential during fault-free operation.
Technical data
Operating modes
Solid State Remote Power Controller E-1071-128
Storage time characteristic curve
Operating status
Fault-free Short-circuit
operation of the load
Wire break Load current
<minimum current
Control input U
S
“0”
“1”
“0”
“1”
“0”
“1”
“0”
“1”
YELLOW LED -
control current
0
1
0
1
0
1
0
1
GREEN LED -
min. current
indication
0
1
0
0
0
0
0
0
GREEN LED -
ON indication
0
1
0
0
0
0
0
0
RED LED -
fault indication
1
1
1
0
0
0
1
0
Remarks
load
OFF
load
ON
phys. isolation no load
after
approx. 5 s
connected,
wire break
1 = LED indicates
0 = LED does not indicate
Status outputs
General data
Ambient temperature
Terminals
0...+60
°
C (without condensation)
screw terminals 2x2.5 mm
2
to
DIN 46288
clamping plate: polycarbonate GV, blue
cover: polycarbonate, black
top-hat rail to DIN 50022-35
to UL 94: V = 0; VDE 0304: grade 1
IP 20 housing, terminals
(IEC 529/DIN 40050)
45 x 74 x 128 mm
approx. 320 g
Housing
Mounting
Burning behaviour (housing)
Degree of protection
Mounting dimensions
Mass
Technical description
1 - status output carries plus potential
0 - status output carries minus potential
t
(theoretical overcurrent factor)
I
N
2
10
100
5
3
1000
4
5 x I
N
current limitation
20