1 description features technical data (t a = 25 c at u n ) e-1048-8d dice version power supply line + type dc power supply with small r i battery and generator etc. voltage ratings u n dc 12 v/dc 24 v operating voltage u s dc 9...32 v closed-circuit current i 0 in the off condition 1) 50 a load circuit load load output power mosfet, high side switch (hss) current rating range i n 1 a ... 30 a (fixed ratings) without load reduction up to 85 c (1 a ... 25 a), 30 a up to 60 c ambient temp. types of loads resistive, inductive, capacitive, lamp loads, motors (depending on duration of inrush current) entry version load output with short circuit protection entryprotect version load output with short circuit and overload protection (typically 200 ms at i load typically 1.3 x i n ) i n = 1 a...10 a: see trip curve 1 i n = 15 a...30 a: see trip curve 2 typical voltage drop u on at rated current i n 1) only entryprotect switching point 1) typically 1.3 x i n (-40 c...+85 c: 1.1...1.5 x i n ) trip time (standard curve) 1) typically 200 ms with switch-on onto overload and/or load increase on duty max. overload i n = 1 a...10 a: 60 a (at l/r = 3 ms) i n = 15 a...30 a: 200 a (at l/r = 3 ms) parallel connection of channels for loads of 30 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). the smart power relay e-1048-8d is a remotely controllable electronic load disconnecting relay with two functions in a single unit: l electronic relay l electronic overcurrent protection the 4 pin dice version is designed for use with standard automotive relay sockets. a choice of current ratings is available from 1 a through 30 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 now type e-1048-8d combines these two functions in a single unit, thus minimising the number of connections in the circuit and thereby reducing the risk of failures. applications type e-1048-8d 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 and protected: - road vehicles (utility vehicles, buses, special vehicles) - construction and agricultural machinery - 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 l integral power electronics provide a wear-resistant switching function, insensitive to shock, vibration and dust. l compared to electro-mechanical relays, only a fraction of the closed-circuit current or switching current is needed. this is important for battery buffered load circuits which have to remain controlled even with the generator off line. l the extremely low induced current consumption of less than 50 a is absolutely necessary for battery buffered applications. l the load circuit is disconnected in the event of a short circuit (entry version) or overload/short circuit (entryprotect version). l for switching and monitoring loads of 30 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). l coloured label, for the identification the rated current (e. g. red = 10 a). i n u on i n u on 1 a 50 mv 10 a 110 mv 2 a 55 mv 15 a 70 mv 3 a 60 mv 20 a 90 mv 5 a 80 mv 25 a 120 mv 7.5 a 90 mv 30 a 140 mv 1) typically approvals authority approval mark regulation kba e1 ece r 10 www.e-t-a.de smart power relay e-1048-8d... 1646 5
2 type e-1048-8d smart power relay dc 12 v/24 v, 1 a...30 a in dice version housing / temperature range 4 with housing -40 c...85 c (for rated current up to 20 a) 5 with housing -40 c ... 85 c (60 c at in = 30 a) improved ambient req. (ip protection class etc.) control input c 0 with control input (in+ control 8.5...32 v) c 1 with control input (in- control by connecting to ground) c2 in+ with increased control current (12.5 ma) options a0 without options characteristic curve 0 entry, short circuit protected 4 entryprotect, 200 ms standard switch-off delay with overload, short circuit protected 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 / yellow 25 a / white 30 a / green e-1048-8d 4 - c 0 a0 - 0 u3 - 10 a ordering example: entry version 4 pin ordering information free-wheeling diode integral for connected load i n = 1 a...10 a: max. 40 a i n = 15 a...30 a: max. 100 a delay time 1) t on 0.5 ms, t off 1.5 ms short circuit, overload - disconnection of load in load circuit - 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 control current i e typically 1 ma at 12 v / typically 5 ma at 24 v reset in the event of a failure - via external control signal (low-high) at control input in+ - via reset of supply voltage control input in- control voltage in- relay energised when in- connected to ground; tolerance range 12 v system: 0...6 v = on 8.5...12 v off tolerance range 24 v system: 0...18 v = on 20.5...24 v off reset in the event of a failure - resettable via external control signal (high-low) at control input in- - via reset of supply voltage control input in+ / in- switching frequency at resistive or inductive load max. 60 hz edge of in < 5 ms general data reverse polarity protection control circuit yes load circuit no (due to integral free-wheeling diode) temperature range 1 ...25 a: -40 ... +85 c ambient temperature 30 a: -40 ... + 60 c without derating temperature shutdown power transistor > 150 c tests humid heat combined test, 9 cycles with functional test test to din en 60068-2-30, z/ad temperature change min. temperature -40 c, max. temperature +90 c test to din iec 60068-2-14, nb vibration (random) in operation, with temperature change 6 g eff. (10 hz...2,000 hz) test to din en 60068-2-64 vibration was tested with standard sockets for pcb mounting. behaviour at vibrations depends on design, quality and age (number of push-in cycles) of the socket particularly regarding duration of the vibration and the mounting position. shock 25 g/11 ms, 10 shocks test to din en 60068-2-27 corrosion test to din en 60068-2-52, severity 3 protection class housing -8d4 ip30 to din 40050 housing -8d5 ip54 to din 40050, higher protection class upon request emc requirements emc directive: emitted interference en 50081-1 noise immunity en 61000-6-2 automotive directive: emitted interference, noise immunity: 72/245/ewg and 2006/28/eg terminals 4 blade terminals 6.3 mm x 0.8 mm contact material cuzn37f44 mounting: on automotive relay socket 4-pole technical data (t a = 25 c at u n ) technical data (t a = 25 c at u n ) dimensions dice version (4 pin version) 30 30 2, 4, 6 and 8 - blade terminals 6.3 x 0.8 1.18 1.18 8 4 6 2 footprint to iso 7588 30 41,6 1.64 1.18 this is a metric design and millimeter dimensions take precedence ( mm ) inch 1) typically housing dimensions 30 x 30 x 30 mm when plugged in 30 x 30 x 41.6 mm including terminals materials housing pa66-gf30 base plate pa6-gf30 mass approx. 20 g (25 a and 30 a approx. 50 g) www.e-t-a.de smart power relay e-1048-8d... 1646 5
3 connection diagrams dice version pin selection dice version (4 pin) load (+) gnd line (+) c0 control input in+ dc 12 v/24 v in+ control input 1?10 ma + e-1048-8d dice version line +u s (dc 12 v/24 v) in gnd ground u s load load output 8 4 6 2 (30) (31) (88a) (86) 1 2 3 4 5 6 8 (30) (86) (31) (88a) control input 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. typical time/current characteristics (t a = 25 c) trip time in ms 1 2 1000 100 10 1 0.1 trip time in ms i (a) ) 0 trip curve 1 ?entryprotect? 1 a, 2 a, 3 a, 5 a, 7,5 a and 10 a (standard 200 ms) 1000 1 2 100 10 1 0.1 0 max. overload (typically 60 a) ... times rated curr ent i n typ. 1.3 x i n ...times rated current i n i (a) typ. 1.3 x i n max. overload (typically 200 a) trip curve 2 ?entryprotect? 15 a, 20 a, 25 and 30 a (standard 200 ms) load (+)g nd line (+) c1 (control input in-) dc 12 v/24 v in- control input 1?10 ma preferred types standard current ratings (a) 1 2 3 5 7.5 10 15 20 e-1048-8d4-c0a0-4u3- x x x x x x x x preferred types www.e-t-a.de smart power relay e-1048-8d... 1646 5 smart power relay e-1048-8d...
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