GE Power Supply 1000 VA User Manual

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GE Industrial Systems  
Digital Energy ML Series  
Uninterruptible Power Supply  
350-500-700-1000 VA  
Manufactured by:  
GE Digital Energy  
General Electric Company  
CH – 6595 Riazzino (Locarno)  
Switzerland  
Telephone +41 (0)91 / 850 51 51  
Fax  
+41 (0)91 / 850 51 44  
Website  
ML Series UPS  
Technology for the Digital World.  
ver 1.1 - GB  
 
GE Digital EnergyML Series  
1 - Introduction  
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1.1  
Introduction  
The GE (General Electric) Digital Energy™ ML Series UPS, an uninterruptible power supply, protects  
your equipment from all forms of power interference, including complete power failures.  
1.2  
Safety Rules  
CAUTION: RISK OF ELECTRICAL SHOCK. The UPS contains batteries. The  
appliance outlets may be electrically live, even when the UPS is disconnected from the  
mains.  
The UPS contains potentially hazardous voltages. Do not open the UPS, there are no  
user serviceable parts inside.  
Apart from battery replacement on the ML 350/500/700 models, all maintenance and  
service work should be performed by qualified service personnel.  
Always isolate the UPS from the mains during battery replacement.  
1.3  
Transport / Storage  
No liability can be accepted for any transport damage when the equipment is shipped in non-  
original packaging.  
Before storing, charge the batteries for at least 24 hours.  
Store the UPS in a dry location, storage temperature must be within -20 +45 °C. If the unit is  
stored for a period exceeding 3 months, optimal battery lifetime is obtained if the storage  
temperature does not exceed 25°C. Be sure that the UPS is switched off, and that no cable is  
connected to the interface port.  
If the unit is stored for a period exceeding 3 months, the batteries must be recharged  
periodically. Connect the unit to a wall outlet for a period of approx. 48 hours, minimum every 3  
months.  
2 - Installation  
The shipping box contains a Digital Energy™ ML Series UPS, a power cord, a computer interface  
cable, a CD ROM and this manual. After unpacking, inspect the UPS for damage. If you find any damage  
please immediately notify the carrier and place of purchase.  
IMPORTANT:  
Before making any connection and switching on the Digital Energy™ ML Series UPS, please check the  
following conditions:  
your mains supply is 220 - 240 Volts and 50 Hz, and  
the total power demand of the connected equipment does not exceed the rated output power of  
the UPS (indicated on the rear panel).  
2.1  
Installation Rules  
The UPS is intended to be used in normal domestic and office situations.  
Protect the UPS, according to the wiring rules, with a 16A D-type fuse.  
The UPS must be powered from a single phase grounded wall outlet. Do not use extension  
cords.  
Avoid locations that are excessively humid, near water, near heat sources or in direct sunlight.  
The ambient temperature should not exceed 40°C. Optimal battery lifetime is obtained if the  
ambient temperature does not exceed 30°C.  
It is important that ventilation air can move freely around and through the unit. Do not block the  
air vents.  
Do not plug appliances such as electric heaters, toasters and vacuum cleaners into the UPS.  
The UPS output can be used only for electronic loads such as computers and  
telecommunications equipment.  
Be careful when connecting laser printers: be sure that the demanded power does not exceed  
the capacity of the UPS.  
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2.2  
Installation Procedure  
ML 350-700  
ML 1000  
1.  
2.  
Switch off your computer, and unplug it from the  
socket-outlet.  
Disconnect the power cord from the computer (rating  
250Vac/10A) and connect this cord to the male input  
socket (2) at the rear of the UPS (figures on the right  
show simplified ML 350-700 model).  
3.  
4.  
Using the output cord provided, connect the computer  
to the appliance outlets (3) of the unit.  
Connect the mains cord of the UPS to a working,  
grounded AC wall socket outlet. The green LED  
'LINE' will blink now: mains power is available and the  
batteries are charging.  
5.  
6.  
For best results, allow the UPS to recharge the  
batteries for a period of approx. 10 hours. It is  
acceptable to use the UPS without first charging the  
battery, but the runtime may be reduced.  
For advanced communication possibilities, the RS232  
interface port (4) can be connected to a computer  
system. See chapter 4.  
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3 - Operation  
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3.1  
Start-up  
3.1.1 Start-up, mains available  
1 Press keypad 'ON' for 2 seconds  
LED ‘LINE’ (already blinking) will illuminate continuously now.  
2 The equipment connected to the UPS can now be switched on.  
3.1.2 Start-up, mains not available (‘battery start’)  
If the mains input is absent (power cord not connected, or mains failure):  
1 Press keypad 'ON' for 2 seconds until LED ‘BAT’ illuminates.  
The UPS operates on battery: it discharges the batteries.  
3.2  
Use: Normal Operation  
3.2.1 Normal operation conditions:  
the mains supply is present,  
the UPS is on,  
the load does not exceed the capacity of the UPS and  
the operating temperature is below alarm level.  
AVR (Automatic Voltage Regulation):  
If the quality of the incoming mains is poor, the AVR boosts a low incoming voltage or reduces a  
high one. The load receives a voltage within the normal range (see chapter 7).  
3.2.2 Self test (UPS operation and battery condition)  
In case of a system failure the output voltage can be lost. It is therefore recommended to switch  
off the load before performing a self test. See chapter 6.  
1 During normal operation, press keypad 'ON' for 2 seconds.  
2 If the battery does not pass the self test, a ‘replace battery’ alarm is given. See 3.3.  
3.2.3 Auto-off (no-load shutdown)  
When mains is not available (mains failure or battery start) the UPS will switch off when the load  
is less than 5% of the maximum load. In this way unnecessary discharging of the batteries is  
avoided. The unit will automatically turn on again when mains power is restored. The no-load  
shutdown function cannot be de-activated.  
3.2.4 Switching off  
1 Press keypad ‘OFF’ for 2 seconds.  
2 If electric isolation is required, unplug the power cord from the wall outlet.  
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3.3 Use: Status and Alarm Indications  
o status indications  
low priority alarms  
!! high priority alarms  
the operating mode  
!
abnormal operating situations  
situations in which the actual output voltage of the UPS is no longer  
guaranteed; immediate action should be taken  
RESET  
BUZZER  
SITUATION  
LINE  
BAT  
BUZZER  
Charger on  
(3.3.1)  
Normal  
operation  
(3.3.2)  
Mains on.  
UPS output off  
Green blinking  
1x /sec  
O
O
Mains on.  
UPS output on  
Green on  
On battery  
(3.3.3)  
Battery low  
(3.3.4)  
Mains off or abnormal, UPS  
output on  
UPS on battery, battery  
under drained condition  
Beeps  
1x /4 sec  
Beeps  
!
Red on  
Red on  
Possible*  
Not  
possible  
!!  
1x /sec  
Green on  
(mains mode)  
Green blinking  
1x /sec  
Mains on, UPS output on.  
UPS has failed to pass the  
previous self test  
Red  
blinking  
1x /30 sec  
Replace  
battery (3.3.5)  
Beeps  
1x /30 sec  
!
(standby mode)  
Overload on  
mains (3.3.6)  
Mains on, output power >  
105% of the rated capacity.  
Mains off or abnormal,  
Output power > 105% of the  
rated capacity.  
Mains on, unit switches to  
battery mode for 6 secs to  
check the bat. condition  
Not  
possible  
!!  
!!  
Green on  
Continuous  
Continuous  
Overload on  
battery (3.3.6)  
Not  
possible  
Red on  
Red on  
Self test  
(3.3.7)  
O
Green on  
Operating modes and corresponding indications, see 3.3.1 – 3.3.7.  
* Reset Buzzer alarm: Press keypad ‘ON’ for 2 seconds.  
Only the actual buzzer is muted; a next alarm re-activates the buzzer.  
A buzzer reset does not affect the computer interface alarm.  
3.3.1 Charger on  
Mains on, UPS output off, the batteries are charging.  
3.3.2 Normal operation  
Mains on, UPS output on, see also 3.2.1.  
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3.3.3 On battery  
The UPS uses the energy stored in the batteries: see chapter 7 ‘Batteries - autonomy’.  
The UPS will shutdown  
after the batteries have been discharged (automatic restart), or  
if keypad 'OFF' is pressed for >2 seconds (manual restart required) or  
if a 'UPS shutdown' command is given by the computer (automatic restart).  
3.3.4 Battery low (end of autonomy)  
The batteries are nearly discharged. Controlled shutdown of your computer equipment should be  
completed within 1 minute.  
3.3.5 Replace battery  
The battery is bad. Perform the self test again (see 3.3.7) to confirm the ‘replace battery’  
condition. The alarm only goes out after the next self test: if the battery has either been  
sufficiently charged (discharged battery) or replaced by a new one (worn out battery). See also  
5.3.  
3.3.6 Overload on mains/battery  
The demanded power of the equipment exceeds the UPS's rated output power. If the load  
exceeds 150% of the rated power:  
during battery operation, the UPS output will be switched off immediately  
during mains operation, the UPS output will be switched off after 30 seconds.  
3.3.7 Self test  
The self test can be started manually: when the UPS operates in mains mode press the ‘ON’  
button for 2 seconds. During the test the unit will switch to battery operation for 6 seconds to  
check the battery condition. After 6 seconds the unit will switch back to normal operation: mains  
mode. See also 3.2.2.  
4 - Communication  
The RS232 port is a plug-in interface port (4-pin, RJ-11, 4P-4C) which enables advanced communication  
between the UPS and the computer. Use UPS software for unattended operation of workstations, power  
quality related data logging, shutdown notification and control, auto-restart, diagnostics, and battery  
conservation features.  
We strongly recommend using only original GE Digital Energy™ software in combination with the  
RS232 interface port.  
For specific information on GE Digital Energy's connectivity products please contact your local dealer or  
The communication port is available as long as the UPS is ON.  
Pin #  
Function  
1
2
3
4
Tx  
Rx  
No connection  
GND  
RJ-11 4P-4C  
ML 350-700  
ML 1000  
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5 - Maintenance  
5.1  
General  
The UPS is virtually maintenance free: take care of proper environmental conditions and keep air inlets-  
outlets free of dust. Please read 2.1.  
5.2  
Fuses  
If the AC input fuse (1) is defective, be sure it is replaced by a compatible fuse from the same make and  
type. Fuse ratings: see chapter 7.  
5.3  
Batteries  
5.3.1 General  
The service life of the battery is up to 6 years.  
As a healthy battery is critical to the UPS, keypad 'ON' allows a battery test (3.2.2). When the condition of  
the battery is critical, a 'replace battery' alarm will be given (see 3.3). Charge the batteries for at least 10  
hours, switch the UPS off and back on, and perform a self test. If the alarm persists replace the batteries  
as soon as possible.  
5.3.2 Battery replacement  
Warning: first read the safety rules in section 1.2.  
When replacing the batteries, use the same number and voltage(V)/capacity(Ah).  
Proper disposal or recycling of the batteries is required. Refer to your local codes for disposal  
requirements.  
Never dispose of batteries in a fire: they may explode.  
Do not open or mutilate batteries: their contents (electrolyte) may be extremely toxic. If exposed to  
electrolyte, wash immediately with plenty of water.  
Avoid charging in a sealed container.  
Never short circuit batteries. When working with batteries, remove watches, rings or other metal  
objects, and only use insulated tools.  
Battery replacement procedure (ML 350/500/700)  
NOTE: This procedure refers to the ML 350/500/700 models only. The batteries of the ML 1000 are not  
user replaceable, please contact your dealer.  
1 press keypad “OFF’ and remove the UPS input power cord from the AC mains supply  
2 remove UPS front panel (two screws on bottom side)  
3 pull out the battery and disconnect the battery wires  
4 connect the new battery (black -, red +); small sparks can occur, this is normal  
5 reinstall the new battery, do not pinch or clamp the wires  
6 reinstall UPS front panel.  
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6 - Troubleshooting  
Whenever a malfunction occurs, first check external factors (e.g. connections, temperature, humidity or  
load) to determine whether the problem is caused by the unit itself or by its environment. Subsequently  
check the input fuse: it may be blown. If so: replace the fuse (see 5.2) and be sure that the UPS is not  
overloaded.  
The following chart is a simple troubleshooting checklist only. If the suggested solution does not succeed,  
or if the information is insufficient to solve the problem, please contact your dealer or consult  
PROBLEM  
POSSIBLE CAUSE  
SOLUTION  
Blown input fuse  
Output overload  
System failure  
Reduce load, replace fuse  
Please contact your dealer or  
No output voltage during self  
test (3.2.2)  
System failure  
Please contact your dealer or  
Only battery start possible  
Blown input fuse  
See above  
No communication between  
computer and UPS  
Computer interface problem  
Check interface cable and  
attached computer.  
UPS operates on battery  
though mains is present  
Blown input fuse  
See above  
Very high, low or distorted  
mains voltage  
Check mains voltage, contact  
qualified electrician  
Continuously sounding  
buzzer  
UPS overload  
Reduce load  
mains present  
Continuously sounding  
buzzer  
UPS overload in battery mode  
Reduce load  
mains not present  
UPS does not provide the  
expected back-up time, no  
alarm ‘replace battery’  
Weak battery: recent outage or Charge the battery. If the battery is  
worn out battery  
near the end of its service life,  
consider replacing the battery  
even if the ‘replace battery’ alarm  
is not yet active.  
Blinking LED ‘BAT’,  
intermittent buzzer  
Battery test just after  
installation or mains failure  
Allow the UPS to recharge the  
batteries  
Weak battery  
Read 5.3  
UPS output switches OFF  
Battery depleted during mains  
failure: end of runtime  
Wait until mains returns  
Load is less than 5% of rated  
output and no mains power is  
present (no-load shutdown  
function is active)  
Wait until mains returns  
Reduce load  
Load is more than 150% of  
rated output  
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7 - Specifications  
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ML Series model  
:
:
:
350  
500  
700  
1000  
Ratings  
Voltage Amperes (VA) / Watts (W)  
350 / 210  
500 / 300  
700 / 420  
1000 / 600  
Input  
AC input voltage (Vac)  
220 - 240  
AC input voltage window (Vac) (mains) : 140 - 300V  
140 - 300V  
150  
140 - 300V  
150  
160 - 265V  
170  
Maximum AC input voltage (Vac)  
Minimum start-up AC voltage (Vac)  
Input frequency (Hz)  
:
:
:
:
350  
150  
50  
Input frequency range  
nominal ± 10 %  
Typical no-load power consumption,  
normal operation (W)  
AC input current (A)  
:
:
:
12  
2.5  
5
12  
3.6  
5
27  
5
6.3  
27  
6.3  
10  
AC input fuse (A)  
Output  
AC output voltage (Vac)  
AC output voltage tolerance  
Output frequency (Hz)  
Output frequency stability (Hz)  
Output waveform  
:
:
:
:
:
:
:
:
230 (suitable for 220-240 Vac loads)  
nominal ± 5% (before battery low)  
50  
< ± 0.1 (battery operation)  
step sine wave  
0.6 (0.7 at 90% load)  
typically 4, max 10  
if the input voltage is within the input voltage window,  
the output voltage varies between 198-265Vac  
Power factor  
Transfer time (ms)  
Buck/Boost voltage regulation  
Batteries (ratings given for 25°C)  
Nominal voltage (Vdc)  
Number x capacity (Ah) of batteries  
Type  
:
:
:
:
:
12  
1x5  
12  
1x7  
24  
2x5  
24  
2x7  
12Vdc, sealed lead acid, maintenance free  
up to 6 years (depending on use)  
0.5  
Service life  
Recharge current (A)  
Battery recharge time for 80%  
capacity (hours, approximation)  
0.7  
0.5  
0.7  
:
3
Runtime in minutes  
VA / Watts  
100/ 60  
350/210  
500/300  
25  
3
-
40  
8
3
-
60  
14  
7
85  
24  
11  
7
700/420  
-
3
1000/600  
-
-
-
3
General  
Weight (kg)  
:
:
:
:
6.5  
7.5  
11  
13  
Dimensions (hxwxd, mm)  
Enclosure / protection  
Colour (operating panel / case)  
150x110x300  
steel-plastic / IP20  
RAL 9006 (aluminium) / RAL 7035 (light grey)  
150x110x420  
150x110x450  
Environment  
Safety  
:
:
:
:
:
EN 50091-1-1 (EN 60950)  
EN 50091-2  
-10 to +40°C;  
< 35 dB(A)  
95% (non-condensing)  
Electromagnetic compatibility  
Ambient temperature  
Sound at 1 meter  
Maximum relative humidity  
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