ABB DSSR 116 Power Supply Unit

The ABB DSSR 116, also cataloged under the product number DSSR 116, operates as a dedicated hardware component for localized power distribution and voltage regulation within Advant Master and related heritage automation chassis. Configured as a slot-mounted subrack module, this power supply unit conditions auxiliary input voltages to deliver stable, isolated direct-current rails to adjacent logic processors and I/O cards across the parallel backplane bus.

Hardware Specifications

Backplane Bus Communication Velocity and System Integration

The DSSR 116 regulates internal DC power layers to secure steady backplane bus communication velocity metrics, suppressing voltage ripple and thermal drift that could otherwise cause data packet jitter or timing errors in the high-speed processing lines. By delivering dedicated, isolated voltage outputs directly to the chassis bus channels, the hardware simplifies expansion routines and optimizes physical I/O density scaling setups without taxing external panel-mounted power blocks. The internal power management architecture maintains absolute firmware flash compatibility with upstream control hosts, using integrated feedback pathways to monitor internal voltage tolerances and log power diagnostics straight to the central system error registers.

Frequently Asked Questions

Q: What specific diagnostic states do the front-panel LED indicators communicate to field personnel?

A: The onboard LED arrays monitor the status of the primary output rails. A continuous illumination state confirms that the voltage levels match standard operational tolerances, whereas a darkened or blinking status indicates an input power loss, an internal component fault, or a downstream short-circuit across the backplane power rails.

Q: Can the DSSR 116 power supply module be hot-swapped while the subrack chassis is actively managing process loops?

A: No, hot-swapping this power supply is strictly prohibited unless it is part of an explicitly configured parallel-redundant power setup. Pulling a standalone DSSR 116 card under load cuts off the power to the backplane, shutting down the local processors and I/O cards instantly, which will cause connected field loops to drop into their unpowered fail-safe defaults.