The unique Digital-to-Synchro/Resolver (D/S) converter modules used in NAI’s Multi-function boards are solid state designs that eliminate the need for external transformers and operate with lower AC reference frequencies – offering huge space savings. The reduced size and low power consumption of these modules make it possible to supply up to 10 channels of standard-power or 18 channels of lower-power output drive.
NAI offers three types of programmable, isolated output, Digital-to-Synchro/Resolver simulation (D/S) function modules.
The first and most commonly used form factor is a three-channel, high density module with lower-power (0.25 VA max.) output drive capability supported on all multi-function I/O platforms.
The second, a two-channel form factor with standard-power 1.5 / 2.2 VA max. for 2-28 VLL and 28-90 VLL output ranges respectively, and the third is a single-channel high-power (3 VA max.) form factor with output drive capability. (Types two and three are supported on certain platforms).
All D/S modules feature a wrap-around self-test capability and most platforms support an optional programmable AC excitation supply. Utilizing state-of-the-art technologies and design algorithms, many useful application features such as reference voltage and frequency measurement, reference loss detection, paired channel two-speed operation and many others are “built-in.” All type (D/S) converter modules used/supported on the Multi-function I/O board platforms are unique solid-state designs that operate down to 47 Hz.