ASCO is a premier global brand for critical power reliability solutions, automatic transfer switches, and industrial fluid automation products.
ASCO is a globally recognized name in industrial automation and critical infrastructure, historically known as the Automatic Switch Company. The brand is primarily associated with two major product lines: ASCO Power Technologies (now part of Schneider Electric) and ASCO Fluid Automation (part of Emerson).
ASCO Power Technologies is the industry standard for power reliability, offering a comprehensive range of Automatic Transfer Switches (ATS), paralleling switchgear, load banks, and power control systems used in data centers, healthcare facilities, and telecommunication networks. ASCO Fluid Automation manufactures an extensive portfolio of solenoid valves, pneumatic valves, and fluid control components. This page aggregates user manuals, installation instructions, and technical guides for ASCO's diverse range of heavy-duty equipment.
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The Group G Controller manages the operation of ASCO Automatic Transfer Switches (ATS). It monitors voltage and frequency of power sources, initiates transfer between normal and emergency power, and provides status indications and control contacts for engine starting and load management.
To operate the switch non-automatically (manually), refer to the 'Non-Automatic Operation' section of your specific installation guide. This typically involves ensuring the safety of the environment and using a physical handle or a customer-mounted selector switch if the unit is configured for manual control. Always interpret the position indicators carefully before switching.
Feature 31 provides a set of contacts to signal a load disconnect. It is used to disconnect motors or other high-inrush loads before the transfer switch moves between sources (pre-transfer) and reconnect them after the transfer is complete (post-transfer), preventing current surges and nuisance tripping.
Firmware updates for ASCO controllers are typically available through the ASCO Power Technologies support portal on the Schneider Electric website. Updating often requires specific interface cables (such as a USB to RS485 converter) and utility software.
Maintenance includes periodically cleaning the filter element and draining accumulated water. For manual drain versions, rotate the drain knob anti-clockwise to purge water. The filter element should be cleaned with mild detergent or replaced if damaged.