E-1048-8C. - 4 Pages

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Catalogue excerpts

Smart Power Relay E-1048-8C. Description The Smart Power Relay E-1048-8C.- is a remotely controllable electronic load disconnecting relay with three functions in a single unit: l electronic relay l electronic overcurrent protection l 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. with 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. 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 Features l l l l l l l l 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. Issue D l rova pp e1 a E-1048-8C. CUBIC version Technical Data (TU = 25 °C, US = DC 24 V) (TU = ambient temperature at UN) Power supply LINE + Type Voltage ratings UN Operating voltage US: DC power supply with small R i battery and generator etc. DC 12 V/DC 24 V DC 9...32 V Load circuit LOAD Load output Power MOSFET, high side switching Max. current rating IN 25 A Types of loads resistive, inductive, capacitive, lamp loads, motors (depending on duration of inrush current) 1 A...20 A (fixed ratings) Current rating range IN 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 Induced current consumption I0 of the unit (OFF condition) < 1 mA Typical voltage drop UON at rated current IN (at 25 °C) IN UON IN UON 1A 50 mV 10 A 110 mV 2A 55 mV 15 A 70 mV 3A 60 mV 20 A 90 mV 5A 80 mV 25 A 120 mV 7.5 A 90 mV Switching point typically 1.3 x IN (-40 °C...+85 °C: 1.1...1.5 x IN) 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 Delay time ton / toff typ. 5 ms / typ. 1.5 ms (EMC filter in (resistive load) control input) www.e-t-a.de 7 - 17 7

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Smart Power Relay E-1048-8C. Technical Data (TU = 25 °C, US = DC 24 V) (TU = ambient temperature at UN) Wire breakage monitoring in wire breakage thresholds: ON and OFF in OFF-condition (version 1): condition of load Rload > typically 100 kΩ in OFF-condition (version 2): Rload > typically 10 kΩ in ON-condition: Iload < typically 0.2 x IN 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...

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Smart Power Relay E-1048-8C. Dimensions CUBIC version (7 pin version) E-1048-8C 4 - 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 1 5 2, 4, 5, 6 and 8 - blade terminals 6.3 x 0.8 1 and 3 - blade terminals 2.8 x 0.6 4 8 footprint to ISO 7588 51.6 2.03 30 1.18 LED yellow LED red without options: - LED indication AS/SF - signal outputs AS/SF - analogue output U (I) NEW Standard current ratings (A) 2 5 E-1048-8C4-C3A1V0-4U3- 3 2 Dimensions BASIC (4 pin version) Preferred types Preferred types with...

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rWK Smart Power Relay E-1048-8C. Typical time/current characteristics (TA = 25 °C) Connection diagram ... times rated current lN . times rated current I.. control input group fault signal control signal * Optionally available: Pin selection CUBIC version (7 pin = "DELUXE") control signal (= LED yellow) group fault signal (= LED red) control input load output Pin selection CUBIC version (4 pin = "BASIC") control input load output 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...

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