LD250 series display for SSI encoders: built to be as versatile as you need
Anzeigen, Meß und Regeltechnik, Elektromechanische Komponenten und Geräte
LD250 is the multifunction display expressly developed by Lika Electronic for SSI single-turn and multi-turn encoders. It is designed to display position information in both linear and angular modes and is suitable for installation with the whole range of Lika's SSI serial interface encoders and sensors. It can operate in both Master (clock signal is generated by the LD250 unit) or Slave (clock signal is generated by an external device) work modes accomplishing a variety of tasks and further includes several options to always meet your specific practical requirements.
LD250 is a bright and easy-to-read LED display featuring six 15 mm high digits and can show numeric values in the range from -199999 to 999999. It is designed to connect to both single-turn and multi-turn absolute encoders or linear sensors fitted with SSI interface having a resolution between 8 and 32 bits and Binary or Gray code, without restrictions on protocols; SSI baud rate, i.e. the clock frequency, can be up to 1 MHz. SSI telegram as well as functions and parameters (such as Master/Slave operation mode, bit length of the SSI string, Binary or Gray SSI code, scaling factor, counting direction, etc.) can be easily set and configured in the menus accessible using the three keys in the front panel. LD250 series can operate at DC/AC multi-voltage power supply (24VDC and 115/230VAC) and further provides +24V power to supply an external unit through the auxiliary output.
Among the key features the scaling function must be especially emphasized: it allows position information to be scaled to any engineering notation, thus angular and linear positions can be displayed in the unit of measurement you need. LD250 also boasts the selectable linearization function with 16 interpolation points, useful to convert a non-linear input signal into a linear representation and vice versa; this can be done using the simplified "Teach" procedure. It further includes reset and zero position features and bit blanking function to blank out unused bits when requested in specific applications. The bit blanking function also allows the SSI information to be split into two separate units, so displaying for instance the single-turn information (angular position) in one unit and the number of turns in the other.
LD250 series is offered in four configurations to meet any requirements in many different applications. LD250 is a display only version; LD251 further features an analogue output configurable either as 0 ... +10V / –10V ... +10V voltage output or as 0-20 mA / 4-20 mA current output and includes offset and gain functions; LD252 encompasses two optocoupler / transistor digital outputs with adjustable hysteresis for preset function; lastly LD253 boasts a serial RS-232/RS-485 interface for communication with a PC or data output transmission (cyclic or manual).
In addition thanks to the advanced configurations LD250 series can be used to check the encoder status through the monitoring of the digital outputs; and to transmit values in serial string format.
LD250 multifunction display is sealed to IP65 standards in the front side, thus it is suitable also for use in industrial environments such as food, dairy and beverage as well as packaging industries.
, Elektromechanische Komponenten und Geräte
, Elektronische Zähler
, Encoder Absolute
, Meß und Regeltechnik