Smart Power Relay E-1048-8C. (CUBIC)
Description
The Smart Power Relay E-1048-8C.- is a remotely controllable electronic
load disconnecting relay with three functions in a single unit:
G
electronic relay
G
electronic overcurrent protection
G
status indication
The 7 pin CUBIC version is designed for use with standard automotive
relay sockets. A choice of current ratings is available from 1 A
through 25 A. An operating voltage range of DC 9...32 V allows the
connection of DC 12 V and DC 24 V loads.
In order to switch and protect loads remotely, it has until now been
necessary to connect several discreet components together
- an electro-mechanic relay, control cable and integral contact
to close the load circuit
- an additional protective element (circuit breaker or fuse) for
cable or equipment protection
- a device for current measurement (shunt)
Now type E-1048-8C combines all these functions in a single unit,
thus minimising the number of connections in the circuit and
thereby reducing the risk of failures.
with
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rova
app
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E-1048-8C. CUBIC
Technical Data
(TU = 25°C, UB = DC 24 V) (TU = ambient temperature at UN)
Power supply LINE +
Type
Voltage ratings U
N
Operating voltage U
B
:
Load circuit LOAD
Load output
Max. current rating I
N
Types of loads
Power MOSFET, high side switching
25 A
resistive, inductive, capacitive, lamp
loads, motors (depending on duration
of inrush current)
1 A ... 20 A (fixed ratings)
up to 85 °C ambient without load
reduction, 25 A up to 60°C.
Two basic versions with factory pre-
set ratings:
version 1: 1 A / 2 A / 3 A / 5 A / 7.5 A / 10 A
version 2: 15 A / 20 A / 25 A
DC power supply with small R
i
battery and generator etc.
DC 12 V / DC 24 V
DC 9...32 V
Applications
Type E-1048-8C. is suited to all applications with DC 12 V or DC 24 V
circuits, where magnetic valves, motors or lamp loads have to be
switched, protected or monitored:
- road vehicles (utility vehicles, buses, special vehicles)
- rail vehicles
- marine industry (ships, boats, yachts etc.)
The Power Relay is also suitable for industrial use (process control,
machine-building, engineering) as an electronic coupling relay between
PLC and DC 12 V or DC 24 V load
Current rating range I
N
Features
G
G
G
G
G
G
G
G
Integral power electronics provide a wear-resistant switching
function, insensitive to shock and vibration.
Only a fraction of the control power needed by electro-mechanical
relays is required for switching loads. This is important for battery
buffered load circuits which have to remain controlled even with
the generator off line.
The extremely low induced current consumption of less than 1 mA
is absolutely necessary for battery buffered applications.
The load circuit is disconnected in the event of an overload or
short circuit, the trip curve is also suitable for smaller motor loads.
The load circuit is permanently monitored for wire breakage.
Two status outputs for control signal AS and group signal SF
provide status indication. For processing the actual value of the
current flow in a power management system an analogue output
from 0 to 5 V is provided. This voltage signal may also be used as
an input to a control circuit or to switch off the unit by means of
external control in the event of low load current value.
For switching and monitoring loads of 25 A plus it is possible to
connect several units in parallel. Uniform power distribution between
units must be ensured by symmetrical design of the supply cables
(length and cross section).
Coloured label, e. g. red = 10 A, see ordering information.
Induced current consumption
I
0
of the unit (OFF condition) < 1 mA
Typical voltage drop U
ON
at rated current I
N
(at 25 °C) I
N
U
ON
1A
2A
3A
5A
7.5 A
Switching point
50
55
60
80
90
mV
mV
mV
mV
mV
I
N
10
15
20
25
A
A
A
A
U
ON
110 mV
70 mV
90 mV
120 mV
typically 1.3 x I
N
(-40 °C...+85 °C: 1.1...1.5 x I
N
)
Trip time (standard curve)
typically 200 ms with switch-on onto
overload and/or load increase on duty
Current limitation
version 1: typically 75 A
version 2: typically 350 A
Temperature disconnection power transistor >150 °C
After trip
- resettable via external control signal
(low-high) at control input IN+
- reset of supply voltage
Parallel connection of channels for loads of 25 A plus, several units of
identical current ratings may be
connected in parallel. To ensure equal
distribution of current between units,
symmetrical design of the supply feed
is necessary (length and cross section).
Leakage current in OFF
condition
version 1: max. 100 µA
version 2: max. 500 µA
Free-wheeling diode
integral
for connected load
version 1: max. 40 A
version 2: max. 100 A
7
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Smart Power Relay E-1048-8C. (CUBIC)
Technical Data
(TU = 25°C, UB = DC 24 V) (TU = ambient temperature at UN)
Delay time t
on
/ t
off
(resistive load)
typ. 5 ms / typ. 1.5 ms (EMC filter in
control input)
Technical Data
(TU = 25°C, UB = DC 24 V) (TU = ambient temperature at UN)
Temperature range
ambient temperature
- standard: -40...+85 °C
without load reduction (60 °C at 25 A)
- for other temperature ranges please
see ordering key
combined test, 9 cycles with
functional test
test to DIN EN 60068-2-30, Z/AD
min. temperature -40 °C,
max. temperature +90 °C
test to DIN IEC 60068-2-14, Nb
in operation, with temperature change
6 g eff. (10 Hz...2000 Hz)
test to DIN EN 60068-2-64
25 g/11 ms, 10 shocks
test to DIN EN 60068-2-27
test to DIN EN 60068-2-52, severity 3
housing -8C4 IP30 to DIN 40050
housing -8C5 IP54 to DIN 40050,
higher protection class upon request
EMC directive:
emitted interference EN 50081-1
noise immunity EN 61000-6-2
Automotive directive:
emitted interference, noise immunity:
72/245/EW6 und 95 / 54 / E6
Wire breakage monitoring in wire breakage thresholds:
ON and OFF
in OFF-condition (version1):
condition of load
R
load
> typically 100 kΩ
in OFF-condition (version2):
R
load
> typically 10 kΩ
in ON-condition: I
load
< typically 0.2 x I
N
indication via group fault signalisation
FM (switching output)
Fault indication will not be stored, i.e.
after remedy of wire breakage fault
indication will disappear
(possible options:
- wire breakage indication only in ON
condition
- wire breakage indication only in OFF
condition
- no wire breakage indication)
Short circuit, overload
- disconnection of load, indication via
in load circuit
group signal SF
- no automatic re-start
- after remedy of the fault unit has to
be reset via control input IN+
Control input IN+
Control voltage IN+
0...5 V = “OFF”, 8.5...32 V = “ON”
1...10 mA (8.5...DC32V)
Control current I
E
Reset in the event of a failure - reset via external control signal (low
- high) at control input IN+
- via reset of supply voltage
Dimmer operation
possible, see max. switching frequency
(e.g. PWM signal)
Switching frequency
at resistive or inductive load max. 100 Hz
Status and diagnostic functions
Control signal AS
transistor output minus switching (LSS),
open collector, short circuit and overload
proof, max. load: DC 32 V/2 A
0 V-level: when unit is set
(at IN+ = 8.4...32 V)
transistor output minus switching (LSS),
open collector, short circuit and overload
proof, load max. DC 32 V/2 A
0 V-level with overload and short circuit
disconnection, wire breakage indication
voltage output 0-5 V proportional
to load current:
1 V = 0.2 x I
N
5 V = 1.0 x I
N
5 V... typically 6.5 V = overload range
tolerance: (for I
load
> 0.2 x I
N
)
version 1: ± 5 % of I
N
version 2: ± 8 % of I
N
max. output current 5 mA
load resistance >1 kΩ against GND
response time when switching on a load:
t
90
= typically 20 ms
response time of load change on duty:
t
90
= typically 1 ms
LED yellow
LED red
Tests
Humid heat
Temperature change
Vibration (random)
Shock
Corrosion
Protection class
EMC requirements
Terminals of CUBIC version
(7 pin, standard)
5 blade terminals 6.3 mm x 0.8 mm
and 2 blade terminals
2.8 mm x 0.6 mm to DIN 46244
Contact material CuZn37F44
Mounting:
- on automotive relay socket 7 pole or
9 pole
Housing CUBIC
max. dimensions
Materials
Mass
Approvals
CE, e1 logo
30 x 30 x 40 mm when plugged in
30 x 30 x 51.6 mm including terminals
CUBIC: housing PA66-GF30
base plate PA6-GF30
approx. 23 g...43 g, depending on
version
according to EU, EMC and automotive
directives, approvals no.
e1
023880
Group signal SF
Analogue output U(I)
7
Trip times
definition of t
90
reached 90% of final value
Visual status indication
control signal AS
group fault signal SF
General data
Reverse polarity protection
Control circuit
yes
Load circuit
no (due to integral free-wheeling diode)
Status outputs
interference voltage resistance
max. DC 32 V
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Smart Power Relay E-1048-8C. (CUBIC)
Ordering Information
Type
E-1048-8C
Smart Power Relay DC 12 V/24 V - 1 A...20 A (25 A)
in CUBIC housing
Housing / temperature range
4
with housing -40 °C...85 °C (60 °C at I
N
= 25 A)
5
with housing -40 °C...85 °C (60 °C at I
N
= 25 A)
increased environmental
requirements (IP protection class etc.)
Control input
C
with control input (+ control 8.5...32 V)
LEDs
0
without
3
2 LEDs: AS yellow, SF red
Status output minus-switching
A
without
B
with control signal AS
C
with group fault signal SF
D
with AS and SF
Contents of group fault signal SF/
LED indication SF
0
without
1
short circuit / overload
2
short circuit / overload + wire breakage off
3
short circuit / overload + wire breakage on
4
short circuit / overload + wire breakage
off + wire breakage on
Analog output
V0
without
V1
0...5V
Characteristic curve
1
50 ms
(switch-off delay with
overload)
2
100 ms (switch-off delay with
overload)
4
200 ms standard
(switch-off delay with
overload)
Voltage rating
U3
DC 12/24 V
Current ratings /
colour of label
1 A /
black
2 A /
grey
3 A /
purple
5 A /
light-brown
7.5 A /
brown
10 A /
red
15 A /
blue
20 A /
yellows
25 A /
white
Dimensions CUBIC (7 pin version)
with all options: - LED indications AS/SF
- signal outputs AS/SF
- analogue output U (I)
3 2
5
6
8
1
2, 4, 5, 6 and 8 - blade terminals 6.3 x 0.8
1 and 3
- blade terminals 2.8 x 0.6
4
footprint
to ISO 7588
40
1.57
30
1.18
30
1.18
LED yellow
LED red
Dimensions BASIC (4 pin version)
without options: - LED indication AS/SF
- signal outputs AS/SF
- analogue output U (I)
2
E-1048-8C 5 - C
3 D 4 V1 - 4 U3 - 20 A
ordering example 1: “DELUXE”-version 7 pin
E-1048-8C 4 - C
0 A 0 V0 - 4 U3 - 5 A
ordering example 2: “BASIC”-version 4 pin
6
8
4
footprint
to ISO 7588
51.6
2.03
2, 4, 6 and 8 - blade terminals 6.3 x 0.8
7
40
1.57
51.6
2.03
30
1.18
This is a metric design and millimeter dimensions take precedence ( mm )
inch
05/06
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Smart Power Relay E-1048-8C. (CUBIC)
Typical time/current characteristics (standard 200 ms)
Version 1:
1 A, 2 A, 3 A, 5 A, 7.5 A and 10 A
1000
Connection diagram
LINE (+)
DC 12 V/24 V
AS *
yellow
SF *
red
control input
100
group fault signal
Trip time in ms
control signal
10
analogue output 0 … 5 V
max. 6,5 V
IN+
1…10 mA
SF *
AS *
max. 2 A
max. 2 A
=
U(I) *
max. 5 mA
1
LOAD (+)
current limitation
0.1
GND
* Optionally available:
- LED indication AS / SF
- signal outputs AS / SF
- analogue output U(I)
I (A)
0
1
2
typ. 1.3 x I
N
... times rated current I
N
(typ. 75 A)
Pin selection (7 pin = “DELUXE”)
Version 2:
15 A, 20 A and 25 A
1000
E-1048-8C. Cubic
100
10
AS
LINE +
SF
IN+
U(I)
GND
LOAD
(1)
(2)
(3)
(4)
(5)
(6)
(8)
control signal (^ LED yellow)
=
plus U
B
(DC 12 V/24 V)
group fault signal (^ LED red)
=
control input
0 … 5 V analogue output
minus U
B
load output
3 2
5
6
8
1
Trip time in ms
4
1
current limitation
0.1
Pin selection (4 pin = “BASIC”)
(typ. 350 A)
I (A)
0
1
2
typ. 1.3 x I
N
... times rated current I
N
E-1048-8C. Cubic
(1)
LINE + (2) plus U
B
(DC 12 V/24 V)
(3)
IN+ (4)
control input
(5)
GND
(6) minus U
B
LOAD (8) load output
7
2
6
8
4
All dimensions without tolerances are for reference only. In the interest of improved design,
performance and cost effectiveness the right to make changes in these specifications without
notice is reserved. Product markings may not be exactly as the ordering codes. Errors and
omissions excepted.
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