Gossen MetraWatt MAVOLOG BP User manual

Operating Instructions
3-349-044-03
1/4.99
MAVOLOG BP
Uninterruptible Power Supply
for MAVOLOG 10
1 Applications
The MAVOLOG BP (BP = battery pack) is an uninterruptible DC back-up
power supply which automatically supplies power to interconnected
MAVOLOG 10 instruments in combination with the MAVOLOG PS/C in
the event of a power failure.
If the batteries are fully charged, the uninterruptible power supply is capa-
ble of supplying power for1.5 to 10 hours depending upon the number of
interconnected MAVOLOG 10 instruments.
Note
☞The MAVOLOG BP supplies power to the interconnected
MAVOLOG 10 instruments when mains power to the
MAVOLOG PS/C has been interrupted. Operationin the interface
mode is not possible in such cases. Mains power must be
restored to the MAVOLOG PS/C before, for example, data canbe
read out from the MAVOLOG 10 instruments, or before their
parameters can be configured.
2 Safety Features and Precautions
The MAVOLOG BP has been manufactured and tested in accordance
with safety regulations IEC 61010-1 / EN 61010-1 / VDE 0411-1.
If used for its intended purpose, the safety of the user, as well as that of
the device, is assured.
Read the operating instructions carefully and completely before using
your uninterruptible power supply, and observe all points included therein.
The device may not be used:
• If the housing is open
• If it demonstrates visible damage
• If it no longer functions flawlessly
• After extreme stresses due to transport
• After lengthy periods of storage under unfavorable conditions
(e.g. moisture, dust, excessive temperature)
Meanings of symbols on the device:
The symbols on the device have the following meanings:
Warning concerning a point of danger.
(Attention: observe documentation!)
Indicates EC conformity
3 Connecting the MAVOLOG BP
The MAVOLOG BP is used exclusively in combination with the
MAVOLOG PS/C power supply. In addition to a charge voltage of approx-
imately 24 V DC, the power supply also generates a charge control signal
at the “SYSCLK” terminal, which is required for correct functioning of the
MAVOLOG BP. If the “SYSCLK” terminal is not connected, only trickle-
charge operation is possible.
Correct poling of the supply voltage must be assured when the
MAVOLOG BP is connected to the MAVOLOG PS/C.
➭Use only insulated cable (e.g. H07V-U), or insulated wires with con-
nector sleeves for connecting the power supply. Wires without con-
nector sleeves may be pulled out of the connector terminals at the
MAVOLOG BP and cause short-circuiting.
➭Connect the “+24 V DC” and “–24 V DC” terminals to the terminals
with the same designations at the MAVOLOG PS/C.
➭The “SYSCLK” terminal at the MAVOLOG BP must be connected to
the terminal with the same designation at the MAVOLOG PS/C, in
order to assure correct functioning of both units.
No other connections are required.
Note
☞When installing the MAVOLOG BP, a clearance of 1 to 2 cm must
be left between the MAVOLOG PS/C and theMAVOLOG BP, so
that heat generated within the devices can be adequately dis-
persed.
4 Working with the MAVOLOG BP
4.1 Charging and Discharging of the Battery
The MAVOLOG BP is delivered from the factory with a pre-charged
battery in the deactivated condition. Activation takes place automatically
as soon as a correctly poled supply voltage of 20 V DC to 30 V DC is
applied. The LEDs “ACTIVE” and “CHARGE” light up and the internal,
rechargeable battery is charged. Charging is always initiated when mains
power has been restored after a power failure, and the MAVOLOG PS/C
is once again capable of supplying charge current. After rapid charging
for a duration of approximately three hours, trickle charging ensues with
greatly reduced charge current.
If the MAVOLOG PS/C power supply fails, e.g. due to mains failure, the
MAVOLOG BP supplies power to the interconnected MAVOLOG 10
instruments in an uninterrupted fashion from the internal, rechargeable
battery. The “DISCH” LED (discharge) lights up in such cases. The “emer-
gency power phase” is ended when mains power is restored, or when the
capacity of the rechargeable battery has been depleted. The
MAVOLOG BP is shut down automatically in such cases, in order to pro-
tect the rechargeable battery from exhaustive discharge.
If mains failure occurs frequently within a short period of time, recharging
of the battery is started each time failure occurs. The temperature of the
battery is monitored in order to prevent overcharging in such cases. If a
limit temperature is exceeded, the “TEMP” LED lights up and rapid charg-
ing is interrupted (“CHARGE” LED is extinguished).
Note
☞Neither the fact that the “TEMP” LED lights up nor conspicuous
warming of thedevice indicatesa devicemalfunction, but is rather
the result of a frequently, repeatedly started charging cycle.
4.2 Switching the Device Off
If the MAVOLOG BP is removed from a system, or if the system is shut
down, and if backup power from the MAVOLOG BP is thus no longer
required, it can be switched off (i.e. deactivated) with the “OFF” key.
The MAVOLOG BP is deactivated automatically in order to protect the
rechargeable battery if a short-circuit occurs, or if power consumption
form the interconnected MAVOLOG 10 instruments is too great.
The next time supply power is switched on, the MAVOLOG BP is auto-
matically reactivated.
Note
☞The “OFF” key can be used to prevent unnecessary discharging
of the device’s rechargeable battery during periods of non-use.
Do not press the “OFF” key if the device has been installed to a
system and is being supplied with power from a
MAVOLOG PS/C. The “OFF” key is disabled in such cases.
!

GOSSEN-METRAWATT GMBH
Thomas-Mann-Str. 16-20
90471 Nuremberg, Germany
Phone [phone]
Fax [phone]
e-mail: [e-mail]
http://www.gmc-instruments.com
Printed in Germany • Subject to change without notice
5 Replacing the Rechargeable Battery
Depending upon the operating cycle, the service life of the rechargeable
battery amounts to approximately 1000 charging and discharging cycles,
or approximately 3 to 5 years in the standby mode.
The rechargeable battery must be replaced if:
• The duration for which the MAVOLOG 10 instruments can be
operated is substantially reduced
• The MAVOLOG BP is automatically deactivated when a mains failure
occurs
• Charging and discharging of the battery no longer function properly
• The rechargeable battery has been in operation for more than 5 years
A new rechargeable battery is available as a replacement part
(see chapter 8).
Use only original rechargeable batteries, because only these allow for
appropriate temperature monitoring. Rechargeable batteries without tem-
perature monitoring may be destroyed due to overcharging.
Proceed as follows in order to replace the rechargeable battery:
➭Disconnect the terminals at the MAVOLOG BP from all other devices,
remove it from the top-hat rail and deactivate.
➭Carefully open the housing by inserting the blade of an appropriate
screw driver from the side into the indentation at the transition be-
tween the cover and the housing base, and gently lifting the cover. In-
dentations are located in the middle of both the right and left-hand
sides of the housing.
➭Carefully pull the rechargeable battery plug from the PCB and remove
the cover along with the electronics.
➭In order to remove the hold-down plate from above the battery,
slightly press the housing base in an outward direction at its upper
edge until the hold-down plate is released and can be removed.
➭The rechargeable battery can now be removed and recycled.
➭Follow the above instructions in the reverse in order to install the new
rechargeable battery.
➭Make sure that the hold-down plate snaps into position when is it
reinserted.
➭Insert the rechargeable battery plug back into the PCB and carefully
snap the housing cover back onto the housing base.
Your MAVOLOG BP can now be reactivated.
6 Characteristic Values
Electrical Data
Charge Voltage 20 V DC ... 30 V DC
Discharge Voltage 18 V DC ... 21 V DC
Charge Current, “CHARGE” 120 mA
Charge Current, “STANDBY” 20 mA
Overall Consumption, “CHARGE” 150 mA
Overall Consumption, “STANDBY” 50 mA
Rechargeable Battery Characteristic Values
Charge Time, “CHARGE” approx. 3 hours
Max. Discharge Current approx. 2 A,
depending upon battery condition
Type 15 ea. round cells,
1.2 V, NiCd sinter battery
Nominal Capacity 700 mAh
Service Life approx. 1000 charging
and discharging cycles
approx. 3 to 5 years
in standby mode
Short-circuit protection by means of automatic shut-down.
Protection against exhaustive discharge by means of automatic shut-
down.
Overload protection by means of temperature monitoring.
Ambient Conditions
Storage Temperature –20° C ... +60 ° C
Operating Temperature –10° C ... +50° C
Deployment indoor use only
Climatic Category 3z/-20/50/60/75%
(in compliance with VDI/VDE3540)
Altitude max. 2000 m above sea level
Electrical Safety
Operating Voltage safety low-voltage
Contamination Factor 2
Interference Emission EN 50081-1
Interference Immunity EN 50082-2
Mechanical Design
Housing plastic housing for snap mounting to standard
top-hat rail per DIN EN 50022/35 x 15,
or for wall mounting
Terminals screw terminals,
max. conductor cross-section: 2.5 square mm
Protection terminals: IP20, housing: IP40
Dimensions 75 mm x 55 mm x 109 mm (HxWxD)
Weight approx. 480 gr.
7 Housing Maintenance
Use a dry or slightly dampened cloth to clean the housing. Avoid the use
of cleansers, abrasives or solvents. No moisture may be allowed to enter
the housing!
8 Repair, Replacement Parts and Rental Device Services
When you need service, please contact:
GOSSEN-METRAWATT GMBH
Service Center
Thomas-Mann-Strasse 20
90471 Nuremberg, Germany
Phone [phone] - 410 / 256
Fax [phone] - 2 53
e-mail [e-mail]
This address is for Germany only.
Abroad, our representatives or establishments are at your disposal.
9 Product Support
When you need service, please contact:
GOSSEN-METRAWATT GMBH
Product Support Hotline
Phone [phone] - 112
Fax [phone] - 709