Controller ESSK 0 and ELSK 0 solid state electronics infinitely metering ergonomic design robust enclosure Proportional amplifier module ESSK 0. The ESSK 0 proportional amplifier is used to control the solenoid of a hydraulic valve. The current compensation feature ensures that changes in the coil temperature or fluctuations in the supply voltage do not affect the coil current level. The proportional amplifier has an input for a voltage control signal. The control signal terminal has a high input impedance and - for safety reasons - the control signal source should always remain connected. The current at the power output varies linearly with the voltageat the control signal input. With the aid of two trimming potentiometers, both minimum and maximum current values can be set. The amplifier switches off automatically for the duration of any short circuit at the load terminals. Within the amplifier, a quenching diode is connected in parallel with the power output. Die ESSK 0 ist available in the following enclosures with numerous additional features..2 Application examples Agricultural and forestry equipment - Fertiliser spreader - Dung spreader - Fodder mix and cast wagon Construction equipment - Road rollers - Ground drilling rigs Municipal equipment - Snow and ice cleaning equipment - Sweeper General - Speed and pressure control - Materials handling - Belt and spinner drive - Scraper floor drive. Technical data General characteristics Unit, value Power supply (U b ) V 2-0 V DC, smoothed. Ripple < 0% Reference voltage V,7 -, Max. output from reference voltage ma 0 Demand signal voltage V 0 - Minimum current (adjustable) A (0-0,) x I max (with 2,2 kw control signal potentiometer)) Maximum current (adjustable) A (0-0,8) x I max (with kw control signal potentiometer) Maximum permissible output current A 0, - 2, Reference: 00-P-7000-EN-0 Issue: 08.20 /0
General characteristics Unit, value Dither frequency Factory set at 0 Hz (square wave form); (if required, can alternatively be set at 20 Hz) Hz Enclosure protection IP00 (non-encapsulated, without housing) Operating temperature C -20C - +0C Notable features - The power supply input is reverse-polarity protected - The amplifier switches off automatically for the duration of excessive coil current (coil short circuit) Dimensions mm approx. 00 x 98 x 20 Weight g approx. 80g non-encapsulated, 80g encapsulated connection Options: connector DIN 7-SM or screw terminals Cable length and section For mm 2 section wire, max. cable length is 0 metres. Dimensions and connection diagram 00 9,.. Trim potentiometer Trimming potentiometer, max. 20 turns + - 98 90 P2 P2 = Maximum current (I max ) P = Minimum current (I min ) 0 0 20 0 P 7 7 90, +0, Dimensions of male edge connector. Block diagram 2 V - 0 V DC power supply 0 V (2) () reverse polarity protection 2V- 0V V Short () control signal Regler Dither () Solenoid Adjustment Imin Adjustment Imax Current measurement 2/0 00-P-7000-EN-0/08.20 Amplifier ESSK 0/ ELSK 0
. Ordering code Electronic product Push-in card = S Proportional amplifier = SK Type E S S K 0-9 * * * / Model with male edge connector (standard) = 90 with screw terminals (standard) = 9 with screw terminals; side adjustment = 92 with male edge connector; side adjustment = 9 with terminal strip, customized (standard) = 99 with male edge connector; encapsulated model (standard) = 80 with screw terminals; encapsulated model (standard) = 8 with screw terminals; side adjustment; encapsulated model = 82 with male edge connector; side adj.: encapsulated model = 8 Power supply 2-0 V DC = *** Variants / special features (inserted by the factory) Dither frequency of 20 Hz = 0.. Accessories To house the amplifier, Bucher Hydraulics GmbH can provide an enclosure that accepts two PG9 cable glands. An On/Off switch for the amplifier is also available. To generate demand signals, a potentiometer can be supplied. As an alternative to the enclosure, a suitable card holder (for model ESSK 0-90 only) can be supplied, as can an appropriate snap-in retaining foot. Connector plugs, type GDM 09, can be used to connect to the solenoids. In the event of proportional valve malfunctions that are caused by long power leads, use connector plugs type GDM 209D. Order no.: Potentiometer kω 0022 Potentiometer 2,2 kω 002 Potentiometer scale knob 00097 On/Off switch 00078 Cable gland PG 9 000 Retaining nut PG 9 000 Plastic enclosure (0 x 88 x 0 mm) 00289 Card holder 00020 Snap-in retaining foot 000202 Female connector, DIN 7, with 0000 solder terminals Connector plug GDM 09 000970 Connector plug GDM 209D 0000..2 Applicable document Technical data sheet ESSK 0 00-P-70000 00-P-7000-EN-0/08.20 Amplifier ESSK 0/ ELSK 0 /0
2 What is possible? ELSK 0 compact amplifier Makrolon enclosure with front panel, demand-signal potentiometer with indicator knob On/Off switch, green status LED see chapter ELSK 0-*** compact amplifier Makrolon enclosure with front panel, demand-signal potentiometer with indicator knob, 2 switches (detending/nondetending) (forward/backward), On/Off switch, -pin solder socket insert Sta F, green status LED, see chapter ELSK 0-*** compact amplifier Makrolon enclosure with front panel, demand-signal potentiometer with indicator knob, On/Off switch, switch 00% / 0 % demand signal, switches (detending/nondetending) (forward/backward), -pin solder socket insert Sta F, green status LED, see chapter ELSK 0-7*** compact amplifier Makrolon enclosure with front panel, demand-signal potentiometer with indicator knob, On/Off switch, switch 00% / 0 % demand signal, -pin solder socket insert Sta F green status LED, see chapter ELSK 0-8*** Makrolon enclosure with front panel, demand-signal potentiometer with indicator knob, switches (detending/detending) (forward/backward) On/off switch, -pin solder socket insert Sta F green status LED, siehe chapter 7 /0 00-P-7000-EN-0/08.20 Amplifier ESSK 0/ ELSK 0
Controller ELSK 0-*****. The ELSK 0-***** unit is used to control a proportional solenoid. It consists of the ESSK 0-9*** card, fitted in a plastic enclosure. The enclosure is provided with a front plate with an On/Off switch, a green LED and a demand signal potentiometer with indicator knob. The output current varies linearly with the angle of rotation of the demand signal potentiometer. The green LED lights as soon as the unit is switched on..2 Technical data General characteristics Unit, value Dimensions mm 0 x 20 x (L x B x H) Protection class IP. Connection diagram ESSK 0-9*** ESSK 0-9***/0 / / PG9 /2 / ) 2) ) PG9 - + 2 2,2 kω 7 LED Solenoid A - A fast-acting fuse (not supplied) 2 black 2 (-) On/Off switch Power supply 2 V... 0 V / 7 Potentiometer cable xmm 2 ; two metres long black (+). Ordering code Type Ordering code Controller ELSK0-***** 00002 Accessories see chapter 8.. Applicable document Technical data sheet ELSK 0 00-P-70000 00-P-7000-EN-0/08.20 Amplifier ESSK 0/ ELSK 0 /0
Controller ELSK 0-***.2 Technical data. General characteristics Unit, value Dimensions mm 0 x 20 x Protection class IP The ELSK0-*** unit is used to control one or other of two proportional solenoids. It consists of the ESSK 0-9*** card, fitted in a plastic enclosure. The enclosure is provided with a front panel with a three position switch, a green LED and control signal potentiometer with indicator knob. With the On/Off switch in the neutral position, there is no power supply to the amplifier. In the two working positions the respective power output is active. The poutput current varies linearly with the angle of rotation of the control signal potentiometer. The green LED lights when the switch is in either of the two working positions.. Connection diagram Location of potentiometer P and P2 on the card ESSK 0-9*** / / P2 P I max I min /2 / M M2 PG9 + 2 kω LED 7 8 Solenoid A... A fast-acting fuse (not supplied) 2 black 2 (-) On/Off switch Power supply 2 V... 0 V / 7 Potentiometer cable 2 x mm 2 ; two metres long black (+) 8 Switch M=continuous function M2=momentary function. Ordering code Type Ordering code Controller ELSK 0-*** 00082 Accessories see chapter 8.. Applicable document Technical data sheet ELSK 0-*** 00-P-7000 /0 00-P-7000-EN-0/08.20 Amplifier ESSK 0/ ELSK 0
Controller ELSK 0-***.2 Technical data. The ELSK 0-*** unit is used to control one or other of two proportional solenoids. It consists of the ESSK 0-9*** card, fitted in a plastic enclosure. The enclosure is provided with a front panel with an On/Off switch, a green status LED, a switch (Hare 0-00%, Tortoise 0-0%), and a demand-signal potentiometer with indicator knob. In each of the two working positions, the corresponding output is energised. The output current varies linearly with the angle of rotation of the demand-signal potentiometer. The green LED lights as soon as the unit is switched on. Electrical characteristics Unit, value Dimensions mm 0 x 20 x Protection class IP. Connection diagram, kω 00% 0%, kω ESSK 0-9*** / / /2 / M M2 - PG9 + 2 kω 9 7 LED 8 Solenoid On/Off switch 2 black 2 (-) 7 Potentiometer Power supply 2 V... 0 V / cable 2xmm 2 ; two metres long 8 Switch M normal function M2 actuated function black (+) 9 Switch (Hare 0-00% - Tortoise 0-0%) A... A fast-acting fuse (not supplied) Type Ordering code Controller ELSK 0-*** 0002 Accessories see chapter 8.. Applicable document Technical data sheet ELSK 0-*** 00-P-70000 00-P-7000-EN-0/08.20 Amplifier ESSK 0/ ELSK 0 7/0
Controller ELSK 0-7***. The ELSK 0-7*** is used to control a proportional solenoid. It consists of the ESSK 0-9*** card, fitted in a plastic enclosure. The enclosure is provided with a front panel with an On/Off switch, a green status LED, a switch (Hare 0-00%, Tortoise 0-0%), and a demand-signal potentiometer with indicator knob. The output current varies linearly with the angle of rotation of the demand-signal potentiometer. The green LED lights as soon as the unit is switched on..2 Technical data Electrical characteristics Unit, value Dimensions mm 0 x 20 x Protection class IP. Connection diagram, kω 00% ESSK 0-9*** / / 0%, kω /2 / 2 PG9,0 kω 8 7 LED Solenoid A... A fast-acting fuse (not supplied) 2 black 2 (-) On/Off switch Power supply 2 V... 0 V / 7 Potentiometer cable 2xmm 2 ; two metres long black (+) 8 Switch (Hare 0-00% - Tortoise 0-0%). Ordering code Type Ordering code Controller ELSK 0-7*** 00029 Accessories see chapter 8.. Applicable document Technical data sheet ELSK 0-7*** 00-P-70008 8/0 00-P-7000-EN-0/08.20 Amplifier ESSK 0/ ELSK 0
7 Controller ELSK 0-8*** 7. The ELSK0-8*** units are used to control one or other of two proportional solenoids. It consists of the ESSK 0-9*** card, fitted in a plastic enclosing. The enclosing is provided with a front plate with a three-position switch, a green LED and control signal potentiometer with indicator knob. With the On/Off switch in the neutral position, there is no power supply to the amplifier. In the two working positions, the respective power output is active. The output current varies linearly with the angle of rotation of the control signal potentiometer. The green LED lights when the switch is in either of the two working positions. 7.2 Technical data General characteristics Unit, value Dimensions mm 0 x 20 x Protection class IP 7. Connection diagram Location of potentiometer P and P2 on the card ESSK 0-9*** / / P2 P I max I min /2 / M M2 PG9 + 2 kω 7 LED 8 Solenoid A - A fast-acting fuse (not supplied) 2 black 2 (-) On/Off switch Power supply 2 V - 0 V / 7 Potentiometer cable 2 x mm 2 ; two metres long black (+) 8 Switch M = continuous function M2 = continuous function 7. Ordering code Type Ordering code Controller ELSK 0-8*** 0000 Accessories see chapter 8 7.. Applicable document Technical data sheet ELSK 0-8*** 00-P-7000 00-P-7000-EN-0/08.20 Amplifier ESSK 0/ ELSK 0 9/0
8 Accessories To connect the solenoid, a GDM 09 connector plug can be supplied. In the event of proportional valve malfunctions that are caused by long power leads, use GDM 209D solenoid plug. ELSK 0-***** ELSK 0-*** ELSK 0-*** ELSK 0-7*** ELSK 0-8*** Part No. Cable for power supply 2xmm 2 00080 (lenghts in meters) X X X X X Coil connector plug GDM 09 X X X X X 000970 Coil connector plug GDM 209D X X X X X 0000 Fuse, A X X X X X 00098 Fuse holder (line mounting) X X X X X 00079 Plug insert (solder), Sta F X X X X 00209 Line housing, H-A Tgv, for plug insert X X X X 0020972 9 Wiring loom Prop. 2 Prop. Prop. 2 Prop. 2 2 = (Prop. 2) = (Prop. 2) 2 = 2 (Prop. ) = (Prop. ) 2 m 2*,0 mm 2 m/0m *, mm 2 info.kl@bucherhydraulics.com www.bucherhydraulics.com 20 by Bucher Hydraulics GmbH, D-7977 Klettgau All rights reserved. Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual improvement, we reserve the right to amend the product specifications contained in this catalogue. Classification: 70.70.70 0/0 00-P-7000-EN-0/08.20 Amplifier ESSK 0/ ELSK 0