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General About Safety instructions Elektro-Automatik GmbH & Co. KG Helmholtzstrasse 31-33 41747 Viersen Only operate the device at a mains voltage as stipulated • on the type plate Germany Never insert mechanical parts, especially from metal, • Phone: +49 2162 / 37850...
About the device Introduction Technical specifications The electronic loads of the series EL3000A are very Control panel efficient devices which offer a big variety of interesting features at a small form factor. Besides the common func- tionality of electronic loads you can test batteries, load Type voltage or current sources with a pulsed operation, where Display: two line character LCD with the pulse widths and the amplitude are adjustable.
About the device Design Front view Figure 1 Rear view Figure 2 Pin assignment of AUX terminal: +S = positive Sense input (+) -S = negative Sense input (-) Gnd = Ground of trigger output Tr = Trigger output* * Leads out the pulse width determined internal trigger signal as a square wave, which results from the settings in Level A/B operation Instruction Manual Date: 05-30-2017...
About the device Installation The connection is done, with correct polarity, at the rear side of the device at the terminal AUX, at pin 1 (+ Visual check Sense) and pin 4 (–Sense). Recommended cross section: 0,2mm – 2,5mm flexible wire with cable end sleeves. After receipt, the unit has to be checked for signs of physi- cal damage.
Handling the device Operating elements Explanation of the selector positions: Switches to the set values of Level A. These values become instantly active and can be changed now. Mains switch Power (1) Switches to the set values of Level B. These Is used to switch the device on or off.
Handling the device A changeover to regulation mode CV can reset the set A changeover to regulation mode CR can reset the set values of voltage, power and current to their nominal values of resistance, current and power to their nominal values, if the parameter Keep set values has been set...
Handling the device The battery test mode Introduction Mode „Battery“ is intended for battery tests by connecting a battery to the load and discharge it definedly. The aver- age current is measured and the elapsed time is counted and then display as the consumed battery capacity in Ah. The voltage supervision, together with the adjustable undervoltage shutdown threshold Ulow, prevents the bat- tery from being deeply discharged.
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Handling the Settings Device node CAN Base ID (available since firmware 5.01) Possible settings: 1...30 Possible settings: 0x000 (0000) 0x7FC (2044) Default setting: Default setting: 0x000 (0000) Belongs to: Interface cards Belongs to: CAN interface card IF-C1 Explanation: defines the device node (or address) of the Explanation: this adjusts the base ID for the CAN ID sys- device in order to distinct between multiple devices in tem which uses three IDs (see above at CAN ID System).
Remote control Sample applications Overview of the pins AGnd RSEL DGnd PSEL Remote CSEL REMOTE Rem-SB VSEL REM-SB DGND Figure 18 OVP/OT Switching to external control Trigger In VMON Switching to external control is only required if the device R-Range CMON is going to be controlled by external analogue signals.
Remote control Interface cards Application examples General The following figures show only some of many possible applications when controlling one or multiple electronic The electronic load supports various interface cards. loads by a PC. The same applies for mixed configurations The digital interface cards IF-R1(RS232), IF-C1(CAN) with power supplies. and IF-U1(USB) support a uniform communication proto- The configuration shown in figure 23 can also be used col.
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