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The LDM-1000 is an extremely versatile and popular LVDT/RVDT signal conditioning module and the perfect choice for industrial applications requiring the DIN standard rail mount. The LDM-1000 provides everything you will need for accurately interfacing an AC operated Linear or Rotary Variable Differential Transformer to your industrial position control system.

The LDM-1000 was designed with maximum sensor/system compatibility in mind. A wide range of gains, excitation voltages and frequencies ensure compatibility with virtually all LVDT and RVDT type transducers. A full-wave synchronous demodulator eliminates quadrature and harmonics to maximize external noise rejection.

The LDM-1000 also provides several different input/output options to accommodate varying PLC and analog I/O requirements:

√ Single-ended voltage outputs with the use of 100% zero suppression to maximize the sensor stroke utilization while simplifying programming (no need to
deal with sign)

√ Bipolar voltage output to maximize A/D bit usage with most PLC analog input modules, for applications requiring high resolution

√ 4-20mA current output for applications requiring long signal runs or where noise immunity may be an issue. The 4-20mA loop is driven by an internal power supply,
provided by the LDM-1000.

Finally, the frequency response is internally selectable and so is the master/slave function which allows synchronization of multiple LDM-1000 modules to prevent beat frequencies and cross talk between transducers.

SPECIFICATIONS

• 10 to 30VDC operation
• Standard DIN rail form factor
• 4 to 20mA and VDC outputs
• Zero, span and phase adjustable
• 2.5, 5 and 10kHz excitation frequencies
• Low noise, 3-pole Butterworth filter
• Master/slave capability
• Compatible with 4, 5 & 6-wire LVDTs/RVDTs
• Works with very low input impedance LVDTs and RVDTs

FEATURES

• Standard DIN rail form factor
• Voltage and current output signals
• Phase correction
• Status LED’s for power and loop integrity
• Multiple LVDT master/slave capability

APPLICATIONS

• Gas and steam turbine control systems
• Process control systems
• Reeler/dereeler control systems
• Automotive test trackinstrumentation
• Paper head box control