Specifications

7000 Series Microprocessor Controller
Voltage and Frequency Sensing
Page 9
• 3-Phase under and over voltage settings on
normal and emergency sources.
• Under and over frequency settings on normal and
emergency.
• True RMS Voltage Sensing with +/- 1% accuracy;
Frequency Sensing Accuracy is +/- 0.2%.
• Selectable settings: single or three phase voltage
sensing on normal and emergency; 50 or 60Hz.
• Phase sequence sensing for phase sensitive loads.
• Voltage unbalance detection between phases.
Status and Control Features
Time Delays
• Output contacts for engine-start signals.
• Selection between “commit/no-commit” on trans-
fer to emergency after engine start and normal
restores before transfer.
• Advanced inphase algorithm which automatically
measures the frequency difference between the two
sources and initiates transfer at appropriate phase
angles to minimize disturbances from transferring
motor loads.
• Event log displays 99 logged events with the time and
date of the event, event type and event reason.
• Output signals for remote indication of normal and
emergency source acceptability
• Statistical ATS/System monitoring data
screens which provide:
• Total number of ATS transfers.
• Number of ATS transfers caused by power
source failure.
• Total number of days ATS has been in operation.
• Total number of hours that the normal and
emergency sources have been available.
• Engine start time delay - delays all engine starting
signals to override momentary normal source out-
ages - adjustable 0 to 6 seconds (can be extended to
60 minutes with external 24 volt DC source).
• Transfer to emergency time delay - adjustable
0 to 60 minutes.
• Emergency source failure time delay to ignore
momentary transients during initial generator set
loading - adjustable 0 to 6 seconds.
• Retransfer to normal time delay with two settings:
• Power failure mode - 0 to 60 minutes.
• Test mode - 0 to 60 minutes.
• Unloaded running time delay for engine
cooldown - adjustable 0 to 60 minutes.
• Pre and post transfer signal time delay for selective
load disconnect with a programmable bypass on
source failures - adjustable 0 to 5 minutes. This sig-
nal can be used to drive a customer furnished relay,
or for (2) sets of double throw contacts rated 3 amps
at 480 volts AC, specify ASCO optional accessory
31Z.
• Fully programmable engine exerciser with (7) seven
independent routines to exercise the engine genera-
tor, with or without loads, on a daily, weekly,
bi-weekly or monthly basis.
• Contains all alarm signals, logic and time delays for
use with closed transition switches.
• Insynch time delay - 0 to 3 seconds.
• Failure to synchronize - 1 to 5 minutes.
• Extended parallel - 0.1 to 1.0 seconds.
• Delayed transition load disconnect time delay -
adjustable 0 to 5 minutes.
• The same controller can be used for open, closed and
delayed transition control sequences.
• Digital microprocessor.
• Touch pad programming of features and settings with-
out the need for meters, variable power supplies and
reference manuals.
• Sixteen (16) selectable operating voltages available in
a single Controller.
• On-board diagnostics provide control panel and ATS
status information to analyze system performance.
• Displays and counts down active timing functions.
• Selectable multi-language display (English, German,
Spanish, French. For others contact ASCO).
• Password protection to prevent unauthorized
tampering.
• Serial communications board (RS-422/485 protocol)
for viewing adjustments and features with ASCO
PowerQuest communications products. Specify
optional accessory 72A.
• Programmable load shed option for SYNCHROPOW-
ER
®
bus optimization applications. Specify optional
accessory 30B.
Features