User`s manual | American Power Conversion 420/620 Power Supply User Manual

990-7041 Revision 1 9/97
APC Smart-UPS 420/620
User’s Manual
Installation and Initial Start-Up
To obtain warranty coverage, please fill out and
return the warranty registration card now.
Connect Telephone/Network Surge
Suppression (Optional)
Connect a single line telephone or a
10Base-T/ 100Base-Tx network cable into the
RJ-45/RJ-11 telephone/network surge protection
IN jack on the back of the UPS. Connect from
the OUT jack with telephone cable (supplied) or
network cabling (not supplied) to a fax modem or
network port.
Inspect the UPS upon receipt. Notify the carrier
and dealer if there is damage. The packaging is
recyclable; save it for reuse or dispose of it
Check the Site Wiring Fault Indicator
Caution: If the site wiring fault indicator
lights, get a qualified electrician to correct
the building wiring.
Install the UPS in a protected area that is free of
excessive dust and has adequate air flow. Do
not operate the UPS where the temperature and
humidity is outside the specified limits.
Charge the battery
The UPS charges its battery whenever it is
connected to utility power. The battery will
charge fully during the first 4 hours of normal
operation. Do not expect full runtime during this
initial charge period.
Warning: Changes or modifications to this
unit not expressly approved by the party
responsible for compliance could void the
Connect to Utility
Connect Computer Interface
Port (Optional)
PowerChute® plus power management software
is included with this UPS. Connect the supplied
interface cable to the 9-pin computer interface
port on the back panel of the UPS. Connect to
the computer. See software documentation for
installation instructions.
Connect the Loads
Plug the loads into the output connectors on the
rear of the UPS. To use the UPS as a master
on/off switch, make sure that all of the loads are
switched on.
Caution: Do not connect a laser
printer to the UPS.
Operating Instructions
Switch On — Switch Off
With the UPS plugged in, press and
release the on/off/test button to supply
power to the loads.
The loads are immediately powered while the
UPS performs a self-test. Press and release the
button again to turn off power to the loads. It may
be convenient to use the UPS as a master on/off
switch for the protected equipment.
The on-line LED illuminates when the
UPS is supplying utility power to the loads.
The UPS performs a self-test automatically when
turned on, and every two weeks thereafter (by
default). Automatic self-test eases maintenance
requirements by eliminating the need for periodic
manual self-tests.
During the self-test, the UPS briefly operates the
loads on-battery. If the UPS passes the self-test,
it returns to on-line operation.
If the UPS fails the self-test it
immediately returns to on-line operation
and lights the replace battery LED.
The loads are not affected by a failed test.
Recharge the battery overnight and perform the
self-test again. If the replace battery LED is still
on, replace the battery using the Replacing the
Battery procedure.
On Battery
During on-battery operation, the onbattery LED illuminates and the UPS
sounds an audible alarm consisting of 4
beeps every 30 seconds. The alarm stops when
the UPS returns to on-line operation.
Low Battery
When the UPS is operating on-battery and the
energy reserve of the battery runs low, the UPS
beeps continuously until the UPS shuts down
from battery exhaustion or returns to on-line
When loads exceed the UPS’s capacity,
the overload LED illuminates and the
UPS emits a sustained tone. The alarm
remains on until the overload is removed.
Disconnect nonessential load equipment from
the UPS to eliminate the overload.
If the overload is severe, the input circuit breaker
may trip (the resettable center plunger of the
circuit breaker pops out). Disconnect
nonessential load equipment from the UPS to
eliminate the overload and press the plunger
back in.
If there is AC power and the circuit breaker does
not trip during overload, the loads are still
powered. If the circuit breaker trips or the UPS
attempts to transfer to battery, the loads’ power
will be shut off. Turn the UPS off then back on
to power the loads.
Replace Battery
If the battery fails a self-test, the UPS
emits short beeps for one minute and
the replace battery LED illuminates.
The UPS repeats the alarm every five hours.
Perform the self-test procedure to confirm
replace battery conditions. The alarm stops
when the battery passes the self-test.
Shutdown Mode
If there is no power, the host connected to the
computer interface port can command the UPS
to shut down. This is normally done to preserve
battery capacity after a controlled shutdown of
the protected system. In shutdown mode the
UPS stops supplying power to the load. The
online and overload LED indicators flash
alternately or, if the UPS has shutdown due to a
low battery, the UPS will beep once every 4
seconds for approximately 16 seconds. When
line power is restored, the UPS will return to online operation.
Cold Start
Note: Cold start is not a normal operating
When the UPS is off and there is no utility
power, it is possible to cold start the UPS to
power the loads from the UPS’s battery.
• Press and hold the on/off/test button
until the UPS begins beeping.
• Release the on/off/test button during the
beeping to start the UPS.
Storage Conditions
Store the UPS covered and upright in a cool, dry location, with its battery fully
charged. Before storing, charge the UPS for at least 4 hours. Disconnect any
cables connected to the computer interface port to avoid unnecessarily
draining the battery.
Extended storage
At -15 to +30 °C (+5 to +86 °F), charge the UPS’s battery every 6 months
At +30 to +45 °C (+86 to +113 °F), charge the UPS’s battery every 3 months.
Replacing the Battery
This UPS has an easy to replace hot-swappable battery.
3.Disconnect the two wires connecting the battery to the UPS.
Loosen the wires by wiggling them while pulling straight
back from the battery connector.
Note: Please read the cautions in the APC Safety Guide.
Replacement Batteries
See your dealer or call the number in this manual for information on
replacement battery kits. For 420 models, order RBC 2. For 620 models,
order RBC 4.
4.Connect the new battery in place of the old.
Note: Small sparks at the battery connections are
normal during connection.
Battery Replacement Procedure
Battery replacement is a safe procedure, isolated from electrical hazards.
You may leave the UPS and loads on for the following procedure.
5.Place the new battery in the UPS. Use care to avoid
pinching the wires.
Note: Once the battery is disconnected, the loads are not protected
from power outages.
6.Close the battery compartment door and replace the
1.Lay the UPS on its left side. Remove the two screws holding
on the battery door and open the door.
Note: It may be necessary to pull the battery door slightly
toward the front of the unit in order to open the door fully.
7.Dispose of the old battery properly at an appropriate
recycling facility or return it to the supplier in the packing
material for the new battery. See the new battery
instructions for more information.
2. Gently pull out the battery by grasping the white tab.
UPS will not turn on.
Possible Cause
On/off/test button not
UPS input circuit breaker
UPS will not turn on or off.
Computer interface
UPS operates on-battery
even though normal line
voltage is thought to exist.
UPS’s input circuit breaker
UPS beeps occasionally.
Normal UPS operation.
UPS does not provide
expected back up time.
The UPS’s battery is weak
due to recent outage or is
near the end of its service
On-line and overload
indicators are flashing
All indicators are flashing.
The UPS was shutdown
by PowerChute® plus
Internal UPS fault.
The UPS operates
normally, but the site
wiring fault indicator is lit.
On-line and on-battery
indicators only are
Building wiring error such
as missing ground or hot
to neutral wire reversal.
Internal UPS fault.
All indicators are off and
the UPS is not operating.
The UPS is shutdown and
the battery is discharged
from an extended power
The replace battery light is
Weak batteries.
The overload light is
illuminated or flashing
Replacement batteries not
connected properly.
The UPS is overloaded.
Press the on/off/test
button to power the UPS
and the loads.
Reduce the load on the
UPS by unplugging
equipment and reset the
circuit breaker by pressing
the plunger back in.
Disconnect the computer
interface. If the UPS now
works normally, check the
interface cable and the
attached computer.
Reduce the load on the
UPS by unplugging
equipment and reset the
circuit breaker by pushing
the plunger back in.
None. The UPS is
protecting the load.
Charge the battery. The
UPS’s batteries require
recharging after an
extended outage.
Batteries age faster when
put into service often and
when operated at elevated
temperatures. If the
battery is near the end of
its service life, consider
replacing the battery even
if the replace battery
indicator is not yet lit.
None. The UPS will restart
automatically when utility
power returns.
Do not attempt to use the
UPS. Turn the UPS off
and have it serviced
Have a qualified
electrician correct the
building wiring.
Do not attempt to use the
UPS. Turn the UPS off
and have it serviced
None. The UPS will return
to normal operation when
the power is restored and
the battery has a sufficient
Allow the batteries to
recharge for at least 4
hours. If the problem
persists after recharging,
replace the batteries.
Confirm the battery
Reduce the load on the
UPS by unplugging
For Computer Interface Port Specifications, see the APC Website.
If the UPS requires service do not return it to the dealer!
Follow these steps:
1.Use the Troubleshooting section to eliminate common problems.
2.Verify that no circuit breakers are tripped. A tripped circuit breaker is the
most common UPS problem!
3.If the problem persists, call customer service or visit the APC Internet
Website (
• Note the model number of the UPS, the serial number, and the date
purchased. A technician will ask you to describe the problem and try to
solve it over the phone, if possible. If this is not possible the technician will
issue a Return Merchandise Authorization Number (RMA#).
• If the UPS is under warranty, repairs are free. If not, there is a repair
4.Pack the UPS in its original packaging. If the original packing is not
available, ask customer service about obtaining a new set.
• Pack the UPS properly to avoid damage in transit. Never use Styrofoam
beads for packaging. Damage sustained in transit is not covered under
• Include a letter with your name, RMA#, address, copy of the sales receipt,
description of the trouble, your daytime phone number, and a check (if
5.Mark the RMA# on the outside of the package
6.Return the UPS by insured, prepaid carrier to the address below.
North & South America
132 Fairgrounds Road
West Kingston, Rhode Island 02892 USA
Ballybritt Business Park
Galway, Ireland 10800-702000
420 VA
620 VA
0 - 160 VAC
81-143 VAC
106-127 VAC
Resettable circuit breaker
47 - 63 Hz
4 ms typical, blackout response time
420 VA 260 W
620 VA 390 W
115 VAC
50 or 60 Hz, ±0.1 Hz; unless synchronized to
utility during brownout
On-battery waveshape
Stepped sine-wave
Output Over Current Protection
Overcurrent and short-circuit protected,
latching shutdown on overload
Battery type
Spill proof, maintenance free, sealed lead-acid
Typical battery life
3 to 6 years, depending on number of
discharge cycles and ambient temperature
Typical recharge time
2 to 5 hours from total discharge
Operating temperature
0 to +40 °C (+32 to +104 °F)
Storage temperature
-15 to +45 °C (+5 to +113 °F)
Operating and storage relative humidity
0 to 95%, non-condensing
Operating elevation
0 to +3,000 m (0 to +10,000 ft)
Storage elevation
0 to +15,000 m (0 to +50,000 ft)
Audible noise at 1 m (3 ft)
<45 dBA
Size (H x W x D)
16.8 x 11.9 x 36.8 cm
(6.6 x 4.7 x 14.5 in)
Weight - net (shipping)
10.0 (10.9) kg
12.3 (13.2) kg
22.0 (24.0) lb.
27.0 (29.0) lb.
Safety and approvals
UL 1778, UL 497A, CSA 107.1, FCC part 68
EMC verification
FCC/DOC Class B certified
Electromagnetic immunity
IEC 801-4 level IV, 801-5 level III
* User-adjustable through PowerChute® plus (see software documentation).
Acceptable input voltage
Input voltage (on-line operation)*
Output voltage *
Input Over Current Protection
Frequency limits (on-line operation)
Transfer time
Maximum load
On-battery output voltage
On-battery frequency
Download PDF