Alpha Technologies CFR 1500, CFR 2000, CFR 2500, CFR 3000 - Manual (Page 26)

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3.2.1 Terminal Block Input and Output
CAUTION : Installation and wiring should be performed by qualified service personnel
in accordance with applicable electrical codes. Verify that the main utility panel is
switched OFF before proceeding. Mark all circuit breakers supplying the UPS.
1. Connect the input and output wires (Refer to the table below for
recommended wire sizes and tightening torques.)
3. INSTALLATION
Fig. 10
CFR 1500, CFR 2000, CFR 2500,
and CFR 3000 Rear Panels
UPS
Receptacle
BATTERY
Circuit Breaker
AC LINE
Power Cord
GROUND Lug
AC LINE
Circuit Breaker
MODEL TERMINAL BLOCKS TIGHTENING TORQUE
AWG mm 2 Inch Newton
Pounds Meters
1500-2500 (60Hz) 14 2.0 35 4.0
3000 (60Hz) 12 3.0 35 4.0
2000-3000 (50Hz) 16 1.5 35 4.0
Leveling Feet
(CFR 3000 only)
5.10 Maintenance Parameters, continued
5. RS-232 TERMINAL COMMUNICATION
Slow Detect Hi Ref
Increasing this value will make the UPS more sensitive to a slow,
high amplitude line disturbance (sustained overvoltage) by lowering the
overvoltage detection level.
NOTE: The Slow Detect Hys Hi Ref should also be adjusted by the
same amount.
Slow Detect Hys Lo Ref
Increasing this value will raise the voltage level at which the UPS
will resume LINE POWER operation after a line disturbance has been
corrected. This setting should normally be 1 - 3 settings above the
Slow Detect Lo Ref setting.
Slow Detect Hys Hi Ref
Increasing this value will lower the voltage level at which the UPS
will resume LINE POWER operation after an overvoltage condition has
been corrected. This setting should normally be the same, or 1 - 3
settings
above, the Slow Detect Hi Ref setting.
Max. PLL Slew Rate
Increasing this value will reduce the speed at which the Phase
Locked Loop (PLL) will change the output frequency while the UPS
resumes LINE PRESENT operation after a line fault has been cor-
rected. It will also increase the time required to resume LINE
PRESENT operation.
Battery Warning Ref
Increasing this value will increase the time before a LOW
BATTERY WARNING occurs, thus allowing the batteries to drain more
of their charge before a warning is given. Decreasing this value will
allow more run time between LOW BATTERY WARNING and SHUT-
DOWN.
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