The following provides additional information on the Electronic Synchronization System on our LS, VS, CS and XRS type shutter devices and our Manufacturer's Warranty. Please note, the synchronization system available on the NS type devices, is described separately.
The Electronic Synchronization System provides a feedback signal after the shutter transfers to the open state. The system incorporates an infrared emitting diode, an infrared sensitive detecting transistor, and an interrupting vane. The vane is attached to the shutter so as to block the light path between the emitter and detector in the closed position. When the shutter transfers to the 80% open position, the vane is removed from the infrared light path, allowing the emitter to switch the detector to the active state. See Figure #3 for the CS25 and CS35 schematic with the Electronic Synchronization system. This system uses a similar activation flag attached to the mechanism, which triggers a reflective emitter/detector device. See Figure #4 for the sync schematic of the Electronic Synchronization system for a shutter equipped with a 5-pin connector (exception – CS25 and CS35 – as indicated, these devices have a specially designed synchronization system – see Figure #3). See Figure #5 for the CS25/CS35 schematic without the Electronic Synchronization. See figure #6 for the schematic of all other shutter models with Electronic Synchronization. See Figure #7 for the schematic of all other shutter models without Electronic Synchronization. Please note that the CS90HS shutter device will contain two 24 ohm coils wired in parallel to provide a total resistance of 12 ohms. All other standard devices (LS,VS, and CS type) devices contain a single 12 ohm coil. This allows the CS90HS to be driven by all standard UNIBLITZ® drive systems.
The Synchronization system for the NS type devices incorporates a small magnet mounted to the driving mechanism and a Hall Effect sensor. When the device achieves approximately 80% of full open, the magnet causes the Hall Effect sensor to change state producing a signal to indicate that the shutter has switched to the active state. See Figure #8 for the NS shutter schematic which incorporates the Electronic Synchronization system. See Figure #9 for NS shutter models without Electronic Synchronization.
Support circuitry for the Electronic Synchronization System is built into the VCM, VDM and VMM type drive equipment. See the Timing section's Figure 1 for typical synchronization output waveform in the timing specifications.