Brand:ABB

Type:3BSE008538R1

Origin: the Swiss

Warranty: 365 days

Colour: new/used

Shipping method: Courier delivery

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Automatic generator synchronization can be performed through a Woodward Digital Synchronizer & Load Control (DSLC). The DSLC connects to a 505E analog input to bias the 505E’s speed setpoint directly to vary generator speed, frequency and phase. Optionally the DSLC can interface with the unit voltage regulator to match system voltage across a generator breaker. When the 505E is configured for a Generator application, a special speed setpoint rate (Sync Window Rate) is used to increase setpoint resolution around synchronous speed. This allows for tighter setpoint control to accommodate synchronizing manually or by an automatic synchronizer which interfaces to the 505E discretely. This Sync rate is defaulted to two RPM/SEC and is only adjustable through the 505E’s Service mode. This rate is only used when the generator breaker is open the speed setpoint is within 10 RPM of rated speed (also tunable through the Service mode). The DSLC can be used as a synchronizer only or as a synchronizer and load control. When the DSLC is used as a synchronizer only, the 505E must be configured to accept the DSLC’s analog Speed Bias signal and have this input enabled. A ‘Sync Enable’ contact input or function key (F3 or F4) can be programmed to enable the 505E’s synchronizing input when synchronization is desired. The Sync Enable command becomes disabled when the generator breaker closes, however, it may re-enabled again to allow the DSLC to perform tie breaker synchronizations. To re-enable this input the ‘Sync Enable’ contact must be opened and re-closed. Typically a double pole single throw (DPST) switch is used on a site’s synchronizer control panel to select automatic synchronizing by enabling both the DSLC sync mode and 505E analog input at the same time. To configure the 505E to utilize a DSLC for generator synchronization only, program the ‘Synchronizing input’ function to the ‘ANALOG INPUT #6’ setting and program the ‘Sync Enable’ function to a ‘CONTACT INPUT X’ setting. Analog Input #6 is isolated and is the only input directly compatible with the DSLC’s output signal. The ‘Synchronizing input’ function has preset range and gain settings that are tunable only in the Service mode. 

Thus the 4 mA and 20 mA Program Mode settings for the Synchronizing input are irrelevant and are not used by the function’s operation. See Volume 2 of this manual or Woodward manual 02007 for more information on applying the DSLC. When programming a Function Key (F3 or F4), instead of a contact input, to enable the 505E’s analog Synchronizing input, a 505E relay output can also be programmed to select a DSLC’s synchronizing mode. To configure the 505E for this functionality, program the ‘Sync Enable’ function to a ‘FX KEY PERFORMS’ setting, and the ‘Sync Enabled’ function to a ‘RELAY X ENERGIZES ON’ setting. When the 505E is programmed to use the DSLC for Synchronization, the RMT key can also be used to access and enable the Synchronizing function and monitor all synchronization mode messages. See Chapter 5 for information on how to enable this function through the RMT key. By pressing the RMT key and scrolling up or down through the RMT screens, the following synchronizing mode messages can be viewed: