Eaton Electrical ASY0529, ASY0673, ASY0567, ASY0674 manual Communication

COMMUNICATION

On-Generator:An external signal can indicate that the input power is being supplied by a generator. Closure of this contact causes the UPS to change the following parameters to preset values that are designed to optimize performance during periods of generator instability:

SPhase Lock Window and Frequency Slew Rate. These parameters increase the rate at which the UPS tracks the input line, which causes fewer recognized line faults during generator instability.

SFrequency Glitch Count. This parameter increases the number of bad frequency cycles before the unit transfers to battery power, allowing the UPS to operate smoothly during generator instability without transferring to battery.

SMaximum Delta and Line Delta. These parameters widen the acceptable input voltage range, allowing the UPS to ignore any transient voltage regulation problems a generator may experience during unstable periods.

These parameters are also available to trained service personnel through the Service Menu.

See Figure 14 on page 27 and Figure 21 on page 33 to make the connection for all dedicated input signals.

Eaton 9170+ UPS (3–18 kVA) User's Guide S 164201393 Rev E www.eaton.com/powerquality 91