Summary of Contents for AST LS 804
- Page 1 Load Switch LS 804 Original Manual A.S.T. - Angewandte System Technik GmbH, Mess- und Regeltechnik Marschnerstraße 26 D-01307 Dresden Phone (03 51) 44 55 30 Fax (03 51) 44 55 555 www.ast.de vertrieb.dd@ast.de...
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Page 3: Table Of Contents
Pin assignment / CAN interface ................8 4.7.2 Pin assignment / RS485 interface / optional RS232 interface ......... 8 Operation and display LS 804 ................9 5.1. Functions of keys ....................9 ... -
Page 5: General Description
The appliance meets PerformanceLevel PL c. Up to a total of four sensors can be linked up to the device. The LS 804.01 is capable of processing sensors with a strain-gauge signal in mV/V, whereas the LS 804.02 processes sensors with a standard signal of 4-20 mA. -
Page 6: Dimensions
Manual Load Switch LS 804 Monitoring not only takes place of output relays "K1" to "K6" and error relays "Error1" and "Error2”, but also of the load sensors with respect to cable rupture and short-circuiting. In the event of system errors occurring, the error relays will switch off. -
Page 7: Electrical Connection
Manual Load Switch LS 804 Electrical connection 4.1. Connection diagram LS 804 Error LA N RS 485 Figure 3 – Position and designation of connections 4.2. Voltage supply 24 V DC The operating voltage is 18-36 V DC, this being based on a maximum power consumption of 15 VA. -
Page 8: Sensor Inputs I A - I D
4.3.1. LS 804.01 The LS 804.01 is designed for DMS sensors with a signal output range extending from -5mV/V to +5mV/V. The bridge resistors may be from 350 Ω ... 1000 Ω. Input stages "I 1a" and "I 1b" serve to feed the DMS sensors with 5 V, input stages "I c" und "I d"... -
Page 9: Ls 804.02
The LS 804.02 is designed for DMS sensors having an integrated or external DMS amplifier with a standard signal output 4-20mA. The LS 804.02 feeds the amplifiers with 24V DC, max. 25 mA. The input signal range without error message extends from 2 mA to 22 mA. -
Page 10: Switching Inputs In1 To In16
If no signal is present, the LS 804 will operate with the limit set last displayed in Chapter 6.4 Limits (K1 to K6). If, by accident, more than one input is occupied by a signal, the LS 804 will utilise that input having the lowest number. -
Page 11: Analogue Outputs Vout And Iout
7 to 22. 4.7. Digital interfaces LAN, CAN and RS485/232 On the basic version of the LS 804 provision is made for three interfaces for data exchange or data transmission. LAN (RJ-45): Parameterisation of LS 804 via a browser. -
Page 12: 4.7.1 Pin Assignment / Can Interface
Manual Load Switch LS 804 4.7.1 Pin assignment / CAN interface Function (( unoccupied )) (( unoccupied )) CAN-L CAN-GND (( unoccupied )) (( unoccupied )) CAN-H (( unoccupied )) (( unoccupied )) Table 2– X1 – Pin assignment / CAN interface 4.7.2 Pin assignment / RS485 interface / optional RS232 interface... -
Page 13: Operation And Display Ls 804
Function keys The LS 804 device is set to the operating or programming status by means of function keys F1, F2 and Note: The functions of the respective keys F1 to F3 are indicated in the bottom line of the display matrix. -
Page 14: Led Indicators
Run: LS 804 ready for operation Caution! The LS 804 cannot be returned to the operating status (LED Run lights green) until the causes of failure have been eliminated and the device has been restarted by means of the Reset key. or input IN12. -
Page 15: Led "Error" And Error Displays
Manual Load Switch LS 804 5.2.2. LED "Error" and error displays LED Error indicates a system error. At the same time an error message will appear in the display according to the following example: F A T A L - E R R O R ! -
Page 16: Matrix Display - 4 X 20 Characters
The four-line matrix display serves to indicate operating statuses and signals as well as acting as a display when configuring the LS 804. Die 4-zeilige Matrixanzeige dient sowohl der Anzeige von Betriebszuständen und Signalen als auch der Anzeige bei der Konfiguration des LS 804. 5.3.1. Operating display / sensor signals a to d and switching contacts Following application of the operating voltage and the connection of operable sensors, sensor signals a and b will be displayed. -
Page 17: Operating Display / Network For Browser Accessing
Actuating brings about a display change of sensors a/b and c/d. In addition the LS 804 variant (mV / mA) will be displayed as well as the current limit set. M e a s . s c a l e... -
Page 18: Operating Display For Load Spectrum Recorders
Manual Load Switch LS 804 5.3.3. Operating display for load spectrum recorders Load spectrum recorders (LSR) are provided for displaying the service life of the individual sensors a to d, computed in accordance with FEM Directive 9.755. For this purpose, a signal is evaluated second-by-second, proportional to the load 0…100% of the relevant hoist unit when this is operated and saved in a totalizing memory. -
Page 19: Configuration Via Keypad
Chapter 6.4 Limits (K1 to K6) with the "Limit set" function. On the LS 804 it is possible to deposit up to 8 limit sets. -
Page 20: Adjustment
Manual Load Switch LS 804 5.4.2. Adjustment Sensors a to d can be accessed to in the Adjustments Menu. The sensor signals a and b can be adjusted in accordance with the following illustration (Fig. 25): Using cursor keys facilitates switching back and forth to and from the display containing sensors c and d. -
Page 21: Configuration Via Web Browser
The configuration routine is accessed to via the browser by means of the IP address specified under Chapter 5.3.2 Operating display / network for browser accessing (Figure 17 – Network information). The LS 804 load switch has been operably tested under the following browsers/operating systems: - WindowsXP ... -
Page 22: Settings (Scaling, Interfaces, Password)
Manual Load Switch LS 804 6.2. Settings (scaling, interfaces, password) By accessing to the “Settings” window it is possible to display and modify the current data. Any changes made to the settings are written into the device by pressing the button. -
Page 23: Security Settings
The values can only be entered as whole numbers. Any of the sensors can be disabled at will. Note: Where changes are made to the individual sensors, the LS 804 will automatically switch over to the Adjustments Mode after the “OK” button has been pressed. -
Page 24: Adjustment (Load Calibration)
6.3. Adjustment (load calibration) This is where adjustment of the LS 804 to the sensors essentially takes place. Accessing to the “Adjustment” window will display the current data on "Sensor characteristics". Figure 28 – Adjustment, setting the LS 804 according to sensor characteristics (LS 804.01) Figure 29 –... - Page 25 Further information on adjustment status will be found under 6.3.1 Adjustment status ! Caution! Adjusted values (load calibration) will not be taken over by the LS 804 until the SAVE button is pressed! As long as the values have not been taken over the following message will appear: "Adj.
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Page 26: Adjustment Status
Manual Load Switch LS 804 6.3.1. Adjustment status Via the „Adjustment status“ link it is possible to check whether all necessary steps have been performed and completed for adjustment. Figure 30 – Adjustment status – Adjustment completed Figure 31 – Adjustment status – Adjustment wrong... -
Page 27: Limits (K1 To K6)
Manual Load Switch LS 804 6.4. Limits (K1 to K6) Accessing to the "Limit set" window will display the current settings in respect of switching points K1 to K6 for that particular limit set currently in use. Figure 32 – Limits "Enable change with dig. - Page 28 Manual Load Switch LS 804 Button Release of "Limits" for changes. The header "Limits active" will be displayed. Accessing to a limit set as that currently due to be edited. Repeated reading of limit sets and display of current values. Corresponds to Start button.
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Page 29: Load Spectrum Recorders (Lsr)
Manual Load Switch LS 804 6.5. Load spectrum recorders (LSR) Accessing to the “LSR” page will display the following image: Figure 33 – Load spectrum recorders (LSR) Theoretical values Theoretical useful life D (Useful life) is entered in the Theoretical values field in respect of signals a to d as well as the starting values pertaining to actual useful life S (Start value) of the respective sensors. -
Page 30: Configuration / Config
It is possible to select a binary file by means of the button “Datei auswählen“/“Select file“ and to send it to the LS 804 by pressing the “Send“ button. A check is carried out of the device type and checksum of the binary file. -
Page 31: Maintenance / Error Messages
Manual Load Switch LS 804 Maintenance / Error messages 7.1. Status of relays K1 to K6 The status of relays K1 to K6 as well as Error1 and Error2 is queried by means of the browser, Chapter 6.1 Status (information), link “Relay status”. The relay-flags window that opens displays the status of the contacts corresponding to the settings specified in Chapter 6.4 Limits (K1 to K6). -
Page 32: Status Of Relays Error1 And Error2
Where a system error occurs, all relays (K1 to K6 and Error1 / Error2) will be de-energised! Caution! The LS 804 can only be returned to the operating state (LED Run lights up green) after the causes of failure have been eliminated and the device has been started up with key Reset or input IN12. -
Page 33: Instructions In The Event Of Failure
Manual Load Switch LS 804 Instructions in the event of failure The most probable causes of failure – “Sensor errors” (Chapter 8.2. Sensor errors and “Adjustment errors” (Chapter 8.3) – will be found specified in Table 7 and Table 8. Allocation to Ch1 and Ch2 is of no importance. -
Page 34: Sensor Errors
Manual Load Switch LS 804 8.2. Sensor errors This type of error can be caused for example by wire breakage on +SI b (terminal 44). The error is identified by SF=xx / HW=02. F A T A L - E R R O R ! -
Page 35: Communication Errors / Logic Units L1/L2
Manual Load Switch LS 804 Figure 41– Adjustment error / Start – Status After the adjustment function has been accessed to, the LCD will indicate whether adjustment is erroneous or free of errors. A d j u s t m e n t... -
Page 36: Technical Data
Manual Load Switch LS 804 Technical data LS 804.01 LS 804.02 Sensor inputs for DMS sensors for 4 ... 20mA sensors Input signal range (+Si/-Si) -5.0mV/V ... +5.0mV/V 4mA ... 20mA Impedance range for DMS bridge. Bridge resistance: 350 ... 1000 Ω... -
Page 37: 10. Project Planning Assistance
Manual Load Switch LS 804 10. Project planning assistance Settings (scalings) Sensor a Sensor b Sensor c Sensor d Signal used Meas. scale set. Final Value (100% Load) Type Signal AnalogOut 1/2 (4…20mA od. +/-10V) (a,b,c,d, Ʃa+b, Ʃc+d, Ʃa-d) Analogue output 1... -
Page 38: 11. Ec Declaration Of Conformity
Manual Load Switch LS 804 11. EC declaration of conformity Page 34 of 34 Subject to technical changes. 06/2017 A.S.T. - Angewandte System Technik GmbH, Mess- und Regeltechnik...
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