37
RQ3
This command is used to run an in-service battery check test for 60 seconds. The LCD
screen on the cabinet will show that this test is being run. RQ0 will terminate this test early.
After the battery test is initiated, type
VG<enter>
to view the battery status during the test. If
your batteries are in very poor condition, the test may abort prematurely and immediately
display a very low charge percentage on DISPLAY #1 for about 1 minute. If this happens,
have the unit serviced immediately as you have insufficient battery capability to survive
any
type of utility outage, and if such an event occurs, your load will crash! If the test completes
its full minute and your battery charge does not drop below 75%, your batteries are still
good. A result below 75% will require further investigation.
RES
This command is a RESET command and can be used to silence the "battery discharging"
audible alarm when triggered. "Overloads" and "warning" alarms must be reset via the front
panel.
OPT
This command reveals the various options specific to this particular UPS: configuration
version x.xx, the output/input kVA ratings, power transformer step-up ratio, internal battery
amp-hr rating, and 100 mv shunt current (100 mv = _ amps).
Table 4 UPS Software Parameters
S/V option
UPS Parameter
Notes
A
AC line voltages (in RMS volts)
B
AC line currents (in RMS amperes)
C
UPS output voltages (in RMS volts)
D
UPS output currents (in RMS amperes)
E
AC line frequency and UPS output frequency (in Hertz)
F
UPS output currents (in percentage of rated output)
G
Battery (DC voltage/ DC current /percentage charge remaining)
1, 2
H
Load power (KW/KVA/power factor)
I
Temperature of heat sink A/B/C (in
°
C)
J
Room/Control PC board ambient temperature (in
°
C)
K
Fault status (Indicates operational problems, should they exist)
L
AC line status (Indicates problems with the AC line)
M
Battery Voltage (Batteries/Bus, should be approx. equal)
N
Battery Amps (Total/From Internal batteries)
O
AC Line Power (KW/KVA/power factor)
P
Power (AC U Battery/Load/Efficiency)
Q
Neutral Amps/Percentage of Rated Load
None
Parameters A through L displayed all at once
Notes on the MESTA UPS Parameters:
1. Current draw from the batteries is "+" if batteries are being discharged and "-" if batteries are
being charged. A small positive or negative value of .1 or .2 amps may not necessarily reflect
that the batteries are being charged or discharged.
