EHP LD Technical Manual

Digital crane scale

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Summary of Contents for EHP LD

Page 2 Warranty ............................. 8 Digital crane scale LD | LDN (Front view) ..................10 Digital crane scale LD | LDN (Rear view) ................... 11 Ram protection ..........................12 Eyelet ..............................12 Load hook ............................12 LED-Display ............................13 Control panel ............................. 16 Infrared remote control ........................
Page 3 Manufacturer: EHP-Wägetechnik GmbH Address: Dieselstrasse 8, D-77815 Bühl (Baden), Germany hereby declares that the product: digital crane scale type LD / LDN Plant number: Year of manufacture: complies with the following harmonized standards with all options: Machinery Directive 2006/42/EC; EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-4-11 according...
Page 4 In this technical manual you will find the necessary information for operating the LD and LDN digital crane scales. ► Please read the operating instructions before you put your crane scale into operation. This will protect you and prevent damage to your equipment.
Page 5 Table 1 – Technical data...
Page 6 (ropes, chains, etc.) from unhooking. ● Check that the eyelets, shackles, lower load hooks, bolts and safety pins are in perfect condition. In case of heavy wear (≥10% of the original dimensions) of these parts, please contact the EHP customer service.
Page 7 ● The verification marks and seals on CE-M approved scales must be handled with care. If they are damaged, please notify your regional weight and measures authorities. In case of malfunctions: ● Repairs may only be carried out by qualified personnel! ● Read the chapter "Troubleshooting“ and „Error detection“. ● Contact the EHP customer service.
Page 8 If you still wish to use the crane scale in these areas, it must be specially equipped by EHP. Even if the crane scale is well-protected, damage can still occur from this application. Technical defects caused by use in these baths are not covered by warranty or liability.
Page 9 ● Digital crane scale LD (calibrated) or LDN (CE-M approved) Figure 2 - Digital crane scale LD | LDN The following accessories are included in the scope of delivery: ● Mounting eyelet ● Load hook ● Ram protection (from model LD 1 | LDN 1) ●...
Page 10 Figure 3 - Front view The LED display (1) incl. control panel (2) with 6 function keys formst he central control unit. The surrounding Ram protection (3) helps to prevent impact damage. The eyelet (4) is located on the top and the load hook (5) at the bottom. Depending on customer configuration, the figure shown above may vary.
Page 11 Figure 4 - rear view At the rear of the digital crane scale LD | LDN the battery box (6) is located, which can be opened by loosening the two knurled screws. Inside the housing is the 6V battery. Figure 5- 6V battery/12Ah LD | LDN (Article-No. 69268) This is connected via the two round connectors.
Page 12 The surrounding ram protection shields the electronic and measuring unit of the crane scale from impact damage. Abbildung 1 - Rammschutz Figure 7- Ram protection The crane scale will be hung up with it’s eyelet in the crane hook. It must be ensured that the eyelet can move freely in the hook base of the crane hook, rests properly in the hook and is not tilted.
Page 13 The LED display shows the weight of the lifted goods and additional parameter. 1. 5-digit weight display 2. +/- sign 3. PT (Pre-Tare) 4. Net weight value (Tare function activated) 5. Standstill indicator 6. Battery empty 7. 1 / 2 range display The display consists of a 5-digit, 7-segment LED.
Page 14 This symbol is shown when a tare value has been entered. The weight value displayed is a net weight. This symbol is shown together with the - symbol when a tare value is entered manually with the remote control. The weight value displayed is a net weight.
Page 15 Every weight is displayed combined with its algebraic sign If more than 2e (double number unit) above the nominal weight is added, the display on the scale starts flashing. If more than 9e above the nominal weight is added the crane scale shows “OL“...
Page 16 The crane scale can be operated via the integrated control panel below the LED display. Figure 2 - Control Panel • Turn on the scale • Enables automatic segment control of the display • After that, the scale automatically adjusts to "0" Always switch on the scale 5 minutes before the first weighing.
Page 17 By pressing the button, a check is carried out on each individual light segment of the display (segment control) and further information about the scale is displayed. For about 5 seconds, the display flashes consecutively: 8 8 8 8 8 ( Segment control) L A H (Softwareversion)
Page 18 Zero adjustment range: -1 to +3% of the rated load (LDN model - legal-for-trade); Max. zero adjustment range: -99 to +99% of the nominal load (model LD - non-legal-for-trade) "Zeroing" is not possible outside the zeroing range and in tare mode.
Page 19 (less than 20m), this is an indication that the batteries need to be changed (3 pieces 1.5V Type AAA, Micro LR03, AM4, MN2400). Figure 10 - Infrared remote control Some functions like Print, Add or Total can only be used in combination with EHP weighing data receiver (see Accessories on page 39).
Page 20 This button has the same function as on the crane scale control panel. Press this key to transfer the weighing data to optionally available EHP receiving devices (see Accessories on page 39). For example, an individual receipt can be printed out on TELEDATA USB weighing data receiver.
Page 21 Special functions are not included in the standard scope of delivery. Contact your EHP contact person for further information. Press this button to activate the pre-tare function. The display shows now the last pre-tara value. Use the keys 1 to 0 to enter the tare value and confirm with the ENTER key.
Page 22 To establish communication between the scale and the remote control, the transmission channel may have to be adjusted. 1. By pressing the „TEST“-Button the crane scale display shows the current setting parameter in following sequences: 88888 Segment test Release 12.21 Version Scale number (01-16) Canal number (01-28)
Page 23 To set the channel of the infrared remote control to a defined number please ensure that the crane scale channel number is also set to this number. For more information on changing the crane scale parameters, refer to section „Functions of the LD | LDN crane scale on page 28“.
Page 24 The channel number search can be performed automatically. Align the infrared remote control with the crane scale display. Press the following key combination quickly, one after the other: The canal search is indicated by blinking of the transmitter LED. As soon as the scale reacts to the signal of the remote control press ENTER again.
Page 25 The status LED (3) indicates the charging status of the accumulator. Figure 11 - Charger & adapter The charger is only suitable for charging maintenance-free original EHP accumulators. The charger cannot be opened. If the device is damaged due to improper opening, the warranty is voided. Before putting the device into operation, make sure that sufficient ventilation is provided.
Page 26 The charging socket incl. plug lock (1) is located at the bottom side of the crane scale. The fuse holder (fuse 1A, 5x20mm). The plug of the charger is inserted into the charging socket. Before disconnecting the charger cable, the plug lock on the charger socket must be pressed.
Page 27 • With delivery the accumulator is already charged for 8 hours and is immediately ready for use. • The accumulator should never be stored uncharged. • A completely discharged battery requires at least 12 hours of charging. • If the charging time is less than 12 hours, a longer charging period of approx. 24 hours is recommended for the next time.
Page 28 The setup button on the scale can be used to adjust various settings. A long press on the setup button will take you to the menu. The following parameters can be set by the end user: P07 -> Automatic shut-off P13 ->...
Page 29 Use the TARA button to activate the parameter to call up the position to be changed. Use the TEST key to type in a value between 01-60. This value indicates how many minutes the scale should switch off. Use the RESET key to temporarily save the parameter value. Press and hold the setup button for a few seconds to save changes.
Page 30 Some operating parameters of the crane scale can be adjusted by the end user. These adjustments can be useful, for example, if several EHP crane scales are operated at one location and the radio link is interfered with by other machines.
Page 31 Press the TARA button to activate the parameter. Then use the TEST button to select a desired value between 01 – 28 (corresponds to channel 01 – 28). Confirm and close the parameter by pressing the RESET key. The display shows P13 and xx alternately, where xx corresponds to the newly set channel number.
Page 32 Press the TARA button to activate the parameter. Then use the TEST button to select a desired value between 01 – 99 (corresponds to channel 01 – 99). Confirm and close the parameter by pressing the RESET key. The display shows P14 and xx alternately, where xx corresponds to the newly set scale number.
Page 33 Press the TARA button to activate the parameter. Then use the TEST button to select a desired value between 01 – 12 (corresponds to remote control number 01 – 12). Confirm and close the parameter by pressing the RESET key. The display shows P18 and xx alternately, where xx corresponds to the newly set remote control number.
Page 34 Master -Slave scale function can be retrofitted at existing scales. Please contact your EHP contact person. Up to four LD | LDN crane scales can be used in a compound system (Master - Slave) to weigh long materials or large assemblies.
Page 35 The activation / deactivation of the master – slave function requires scale setup adjustments which can only be carried out in agreement with the manufacturer. Please contact directly EHP Wägetechnik GmbH. The following characteristics apply only for CE-M approved master – slave systems: •...
Page 36 This function can only be used with optional equipment. With this function an acoustic signal or a warning message as output can be given out when certain weights are reached. You can enter up to four different weight values. Open the function menu by pressing ENTER. Selection of weight limit.
Page 37 This function can only be used with optional equipment. As soon as a weight limit value (L1-L4) is reached, an acoustic signal sounds or a warning message is given out. The duration of the signal can be selected as a continuous signal or limited in time between 1-9 seconds.
Page 38 This function can only be used with optional equipment. With this function automatic taring is performed as soon as one of the defined weight values (L1-L4) is reached. Open the function menu by pressing ENTER. tAr 0 Autotaring is deactivated as default value. Autotaring enabled by pressing button 1.
Page 39 The crane scale LD | LDN can be upgraded with a radio transmitter unit to send weighing data to EHP receiving units. This allows weighing data to be processed quickly and easily. A selection of additional accessories is shown in Figure 13.
Page 40 Fuse 1A, 5 x 20mm DIN 41571 72509* Digital display LD/LDN complete* 72204 Front panel LD/LDN for models before 01/2013 10467 Front part LD/LDN EMI/ESD V13 for models from 02/2013 56639 Protective hood LD/LDN 0.5 - 5 t 61578 Protective cover LD/LDN 10 t 72237 Protective hood LD/LDN 0.5 - 5 t...
Page 41 Display is dark No power Check if crane scale is switched on. Check if accumulator is charged. Check condition of fuse. After switching on, the display briefly The crane scale is beyond the Switch off scale, unload shows the "+" sign and then switches zero setting range and switch scale on again.
Page 42 Displayed weight changes rapidly Load is swinging Pick up load more carefully. Strong temperature fluctuations Switch crane scale off and let it adjust to ambient temperature for several hours. Battery can no longer be used Battery charger defect / not Check power supply.
Page 43 Error is detected again. The input voltage of the measuring amplifier is too high. Contact your EHP Service AD- Converter error partner for further information. Error radio modem An incorrect radio channel was set or the modem is defect.

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