Battery Monitoring System
Type EBMS
Technical description
The battery monitoring system is used to permanently
monitor fixed installed UPS batteries. The
instrument monitors the attached battery while it
records constantly the battery’s parameters to the
plugged USB-stick. When needed, the stick can
be removed any time to evaluate the current and
past battery state.
All cell voltages as well as the current, the ripple
current and the ripple voltage of the whole battery
are available on the USB-stick if wanted. Furthermore
also the battery room temperature and its
hydrogen concentration are also written to the
USB-stick.
On the high resolution display all measured parameters
can directly be displayed without the use
of a PC or a tablet. Additionally the instrument can
be directly connected via USB to a PC or the
Megger Torkel instrument.
Since the instrument is equipped with a standard
MODBUS RTU interface, the data can easily be
made available on your local PLC or PC without a
large software overhead. Like this, the battery is
remotely monitored and you have the data available
at all times.
In case, you need to monitor more than 60 cells,
the instrument can directly be cascaded with its
second RS485 interface in order to allow more
cells.
Furthermore, the instrument has 3 potential free
relay contacts. Multiple parameters can be programmed
to these relays to have a simple interface.
Like this the instrument is connected to a
PLC without the use of MODBUS.
For discharge and impedance tests, the instrument
can be directly connected to the Megger
Torkel instrument.
60 Cells per instrument (max 160V)
U/I ripple monitoring
Charge-Discharge current monitoring
Continuous measurement of individual
cell impedance
3 potential free alarm contacts
Cascadable
Megger Torkel compatible
PT100 Temperature monitoring
Input hydrogen gas concentration
USB Logger
RS485 Modbus RTU for PLC, PC‘s
High resolution TFT Display
DIN-Schiene 35mm
Specifications
Supply voltage: 20-160VDC
Power consumption: Max. 5W
Power supply: universal power supply 20 – 160VDC
Working temperature range: -5ºC to +45ºC
Max. humidity: 95%, non-condensing
Mounting: DIN-rail 35mm
Max. number of cells: 60
Max. voltage per cell: 0 – 160VDC, 300V/600V upon request
Cell input impedance : 1.04MΩ
Min. resolution of cell voltage: 3mV
Accuracy: +/- 3mV @ 25ºC
Long term stability(3 month
period):
+/- 0.1%
Limit contacts:
- Status
- Contact hysteresis:
- Max. contact load:
- Life span of contacts:
3 potential free change over contacts
Trigger criteria’s programmable in the instruments menu
Symbol on the internal display
Adjustable, factory setting is +/- 5 counts
1A resistive / 230VAC
100‘000 cycles at max. load
10‘000‘000 cycles at no load
Measurement input ripple voltage: no need to connect this signal. The signal is directly measured from the
instruments power supply connection.
Accuracy ripple current: +/- 0.3%
Measurement input current: depending on the requested maximum current, a current sense module
is supplied.
Accuracy current measurement: +/- 0.1% gain error, Offset +/- 0.1%
Accuracy ripple current measurement:
+/- 0.25% gain error, Offset+/- 0.1%
Temperature measurement: -30 … +70 ºC, with external 3-wire Pt-100 temperature sensor
Accuracy: +/- 0.1 ºC
Pt-100 sensor cable length: 1000m, automatic cable length compensation
Hydrogen concentration input: 4 … 20mA, measurement with an external hydrogen sensor
USB data logger: accepts FAT32 formatted USB-sticks
USB Anschluss: galvanically separated USB Type B connector for the connection between
the Torkel or PC
Data connection to PLC / PC: RS485, termination resistors selectable by DIP switches
- Galvanically separated
- Protocol: MODBUS RTU
- Terminals for the cable shield and the connection to the next
instrument on the same bus connection
Dimensions: L x W x H = 213mm x 91mm x 62mm
Weight: 425g
CE-conformity: fulfilled
Basic diagram
PC Monitoring and Analyst Software
Fig. 1 Real-Time Voltage Monitoring
Fig.2 Multiple Battery Banks on 1 PC for Easy Monitoring
Fig.3 Real-time Monitoring of Voltage/Current/Impedance in 1Hr/5Hr/1Day/1Week/1Month/3Month/1Year
24/7 Analyze Software
Cell Voltages from the simulator
Alarm Log with RTC
Trend measuring: Float charge / discharge / recharge condition over 1 week
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