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 for 1.5 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. Operation in the interface
mode is not possible in such cases. Mains power must be
restored to the MAVOLOG PS/C before, for example, data can be
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 61 010-1 / 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 the device indicates a device malfunction, 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.
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