GENEREX‘s 3rd generation BACS (Battery Analysis & Care System) is the most advanced product of its kind on the market today. An ethernet integrated battery monitoring and management system, BACS® uses web management technology to monitor the temperature, internal resistance, and voltage of every single battery in a given system.
Through our patented balancing process—called Equalization1 in Europe and Balancing elsewhere— BACS calibrates the charging voltage of all batteries with the charger‘s target value, keeping all batteries within optimal voltage operating range.
1—Note: The term GENEREX uses in Europe (equalizing) should not be confused with the process of overcharging from wet-cells. As pertains to BACS, the term ‗Equalizing‘ (like the term Balancing) refers to the process of harmonizing the voltages of cells with the charger‘s target voltage.
The constant monitoring and harmonization of the individual charging voltages of batteries helps to guarantee the availability of the battery at all times, making the Achilles‘ heel of any UPS system—or any other battery powered device—a thing of the past!
What‘s more, BACS has the capacity to manage environmental measurements (temperature, humidity, acid fill level, hydrogen gas concentration, etc.) and appliances (UPS, inverters, transfer switches, generators, dry contacts, air conditioning systems, etc.).
BACS is the ideal system for lead-acid batteries (open/wet cell, maintenance free, gel, AGM, etc.), as well as NiCad, NIMH and most types of Li-Ion batteries.
BACS is designed to monitor and optimize lead-acid and other battery types in a given battery sytem.
Free BACS viewer software shows the Equalization (Balancing) of a battery (the bold violet line in the graphic) within a string of 32 batteries during a discharge/recharging process. BACS Equalization (Balancing) prevents the overcharging of the violet battery, while the batteries around it continue to charge.
By means of a patented process called Equalization (or Balancing), BACS regulates the voltage supply from the charger or UPS for every battery. This process serves to calibrate the batteries and results optimal capacity and improved lifespan.
Oscilloscope graph of battery voltages during the Equalizing (Balancing) process: The voltages of the 3 batteries behave differently given the regulating influence of the BACS modules. The ideal harmonic charging curve will be achieved for every battery in the string.
The Equalization (Balancing) process prevents the unintended overcharging of batteries. (By preventing overcharging, BACS helps to limit gassing, dry-out, and thermal runaway.)
By balancing the voltages of a system‘s batteries, BACS prevents damage caused to batteries by neighbors in the system. Thus, a new battery can be swapped into a string of older ones without risk of overcharge, making full swaps unnecessary.
Because it monitors key battery parameters and set thresholds, BACS is able to provide advance warning—via audio, video, and network messages—of system events that require attention.
By means of an embedded dry contact output, the BACS system is capable of tripping the battery breaker in the event of thermal runaway. Automatic stringwise battery disconnection is possible, given the presence of a GX_R_AUX relay, which trips the battery breaker when user defined parameters are met.
The GX_R_AUX module provides 4 relay contacts and 4 digital inputs. It controls up to 4 breakers. The digital inputs read the battery breaker status and display it in the BACS web interface. Other alarm devices (for example, audio alarms) may be connected to the outputs or digital inputs of the GX_R_AUX.
BACS guarantees, through Equalization (Balancing), a full charge level and the optimal functioning of the battery system.
By monitoring impedance trends, BACS allows the user to detect weak or damaged batteries in early stages of deterioration. Timely replacement of bad batteries is vital to improving the lifespan of the battery system as a whole.
BACS includes a full qualified UPS/SNMP and MODBUS manager, one that is compatible with any UPS presently on the market! Among BMS systems on the market, this function is unique.
BACS allows MODBUS clients to read the system data through IP and RS232 (and, optionally, RS485), as well as through SNMP. Conversion to PROFBIS and LONBUS is possible through optional converters.
Provides graphical BACS data analysis and reports!
The Equalization (Balancing) process also prevents unintended undercharging. (By preventing undercharging, BACS helps to limit sulfation and loss of capacity.)
The charging of accumulators according to BACS patented equalization process. The charging of Battery 3 is capped to prevent overcharging and gassing. Supply of charging energy to Battery 2 is continued and boosted until the target charging voltage is obtained. Battery 1 performs ideally and is not regulated.
Typical battery problems like sulfation, corrosion, gassing, dry-out, thermal runaway are detectable given proper monitoring. (Changes in impedance and temperature which are monitored by BACS - tend to indicate the onset of such issues.)
Sulfation is often a problem for UPS batteries given that they are consistently held at a float charge level or subject to a charging principle that leaves them uncharged for long periods of time. Without proper regulation, there is no guaranteeing that all batteries have been fully charged when the UPS charge switches from boost to float charging. Often enough, when this takes place, some batteries are overcharged, while others remain incompletely charged. The Equalization (Balancing) process retards sulfation by maintaining ALL batteries at a balanced voltage level and keep them at the ideal SOC - and, thus, in the ideal SOH (State of Health).
By catching increases in impedance and drifting voltages, BACS® allows the user to detect battery stratification. From time to time, in order to reverse stratification, a battery‘s acid-gel-water mix requires rectification. It is by rectifying the mix that the ill- effects of stratification are managed. By verifying lower impedance and improved Equalizing (Balancing) performance, BACS® confirms for the user the benefits of the rectifying process.
The service life of a string of batteries depends on the weakest cell of the weakest battery in the string. Typically, in a UPS, the service life of such a string is 50-60% of what is called for by manufacturing designs. By virtue of the Equalizing (Balancing) process, each of the batteries within the string is maintained at optimal voltage levels, eliminating the ill-effects of improper charging. The constant care provided for by the Equalizing (Balancing) process has been shown to increase service life of batteries by more than 30%! And, given the virtues of the Equalizing (Balancing) process, we aspire to improve on this. (Test results from 2004 have demonstrated that an increase of 50% in not unrealistic. Two BACS regulated systems in our labs have been running on the same batteries for 10 years - two years longer than the time frame stipulated by manufacturing specs. These systems are still running.) BACS® proves it is possible to meet - and even greatly exceed - service lives called for by manufacturers
BACS monitors UPS system data and environmental parameters (temperature, humidity, hydrogen gas concentration, acid fill level, DC current, dry contacts, etc.). Alerts can be set up, and this information can be accessed via multiple communication systems.
Here, a BACS web server displays the battery status of 140 batteries. Actual impedance, temperature, and voltage of every cell is displayed and stored. Status LEDs show a change of color if any battery drifts beyond thresholds.
BACS improves the service quality by providing remote monitoring through Internet, VPN, or any network that allows for the downloading of real time data and battery history. It is now possible to test batteries without going to the trouble of disconnecting them from the system. Maintenance and testing take place under real operating conditions and require no downtime!
Discharge process displayed through BACS Viewer software shows the voltage drop of several batteries during a discharge, unnoticed by the UPS. In a later stage, these accumulators would cause the complete system to collapse! BACS® corrects this problem and attempts to fully recharge this specific battery.
In this graphic, we see the data capacity of the BACS WEB-MANAGER flash rom during float charging operation. By default, battery data is autosaved every 20 minutes. After a discharge - or any other significant event - the autosave interval is greatly reduced. This increases the amount of data saved on the flash rom, but provides very precise data for analysis. (The user may access this data through the BACS VIEWER.) The number of BACS modules and the number of discharges determine the available capacity. The table above shows the number of days of battery history that can be stored on the flash rom during normal system operation (i.e. assuming no significant event has occurred). This data may be transferred to other storage systems on the network. Older files get overwritten once capacity is reached, and only the latest battery data is retained on the flash rom. We recommend downloading and saving battery history on a regular basis. (This also can be done via the BACS VIEWER.)
The reliability of a battery based power supply can only be guaranteed if every battery in it is able to perform at an optimal level 100% of the time!
BACS battery modules are capable of taking precise measurements of a battery‘s internal resistance, temperature, and voltage. These measurements are essential to making precise analyses of the batteries in any given system. BACS transfers this data through a bus system to the BACS WEB-MANAGER. The WEB-MANAGER handles events involving the UPS, inverters, environmental sensors, transfer switches, generators, dry contacts, and other devices.
The BACS WEB-MANAGER acts as the battery system‘s central control unit. It gathers, evaluates, and (on its internal flash memory) stores all pertinent system information. The user is provided access to three web server pages. One displays the actual status of batteries; a second shows actual UPS data; the third shows environmental data and alarm contacts status. The web browser interface of the system is designed for easy configuration. It provides the user with access to all system values and events. A flexible programming interface known as the EVENT MANAGER coordinates a system response to significant events (alarms, notifications, etc.).
The BACS WEB-MANAGER reads individual battery voltages and compares them to the battery system‘s target voltage. The latter value (the target voltage) is sent to each BACS module, which steers voltage levels of the batteries under its control if they happen to deviate from the target. This is the process we call equalization (or balancing). By virtue of it, the voltages of all batteries in a given system can be calibrated to within 0.01 volts of that system‘s target voltage.
BACS effectively mitigates the possibility of overcharging batteries. In this way, it helps to prevent gassing and drying. It also mitigates the possibility of undercharging. Thus, it helps to prevent sulfation. Through Equalization (Balancing), system batteries are kept at an optimal charging voltage, and, therefore, in an optimal SOH (State of Health).
BACS VIEWER shows the individual battery voltage of all accumulators at the end of a discharge. The red dotted line shows the voltages when power has returned. The lower bar graph indicates those accumulators that have collapsed early and have been discharged to a very low level. These batteries are a risk to the entire system.
By managing a battery system‘s charging voltages, BACS vastly improves its durability and reliability.
BACS has the ability to send out ―advance warning‖ alarms via email, email-to-SMS, network message, SNMP, RCCMD, MODBUS, and, optionally, PROFIBUS, LONBUS, and GSM. (Alarm parameters can be configured by the user to match battery type.) For instance, discovering rising internal resistance in an battery—an indicator of corrosion or sulfation— BACS® triggers an alarm. (Sulfation, when caught in time, can be reversed by means of a series of charging and discharging cycles.) Given early warning of the issues that such a rise indicates, the user is able to investigate and take action far in advance of the consequences that can result from them. And the effects of corrective actions taken are immediately observable. In addition to internal resistance, BACS® monitors voltage, temperature, the Equalizing (Balancing) process, the system‘s charging/discharging cycles, and, optionally, current. When preset thresholds pertaining to any of these categories are crossed, an alarm is communicated.
In addition to sending network alarms, BACS also warns users via acoustical and visual signals (a buzzer on the BACS MANAGER and alarm LEDs on the module and BACS MANAGER).
The BACS WEB-MANAGER is equipped with flash memory or SD memory cards. Depending on the size of the battery system, it can log anywhere from 6 months‘ to 3 years‘ worth of system data. Using the BACS VIEWER software, data can be downloaded and archived, freeing up storage capacity for further data logging. The alarms of any device connected to the BACS WEB-MANAGER (for example, a UPS) are logged in various files on the device and at remote interfaces. The BACS WEB-MANAGER is equipped with a real-time clock, which is automatically synchronized with a network time server (SNTP). The WEB-MANAGER applies precise data and time stamps to all log files.
In a typical UPS battery installation, one tends to find large numbers of batteries connected in series, this, in order to produce a high string voltage. Modern UPS systems, augmented with IGBT rectifiers, work very efficiently, but require a high string voltage compared to older systems. This increased need means an increase in the number of batteries one might find in any given string. (With larger strings, it‘s not unusual to see voltages of 800V or higher.) At the same time, in data centers, space is an increasingly precious commodity. Managers will often choose space saving Valve Regulate Lead Acid (VRLA) batteries over their Flooded Lead Acid (FLA) counterparts. Where VRLA batteries are smaller, they run hotter—and therefore tend to gas and dry out—often resulting in a shortened lifespan.
EARLY REPLACEMENT, REDUNDANCY…
More batteries in a string… this means higher voltage, but it also means more cables, more connectors, greater impedance, and significant voltage drop. The net effect of this is to create charging issues. (2V fluctuations from battery to battery in such a string are not unusual.) And these issues worsen over time. Over time, discrepancies of no more than a few tenths of a volt grow incrementally. It becomes increasingly difficult to maintain a float voltage of 13.6V on any given battery.
All batteries are not created equal. This is a truism. So, it stands to reason that, given a long string, providing individual batteries and cells with precisely the float voltage required to prevent charging issues is an inherently problematic task. Thus, for years, it has been commonly accepted in the UPS industry that such issues and the ill-effects they bring about (sulfation, drying out, shorter and shorter battery life, etc.) were unavoidable. Lacking a technical solution, rather than focusing on the problem, UPS makers have simply recommended replacing batteries earlier than their expected lifetime. Users wanting to avoid the risk of UPS failure have simply had to accept replacing batteries at 50-60% of the lifetimes specified by manufacturing designs.
Naturally, UPS users have never been satisfied with this solution. Changing batteries more often does not completely mitigate the risk of UPS failure. New bat-teries have been known to fail without warning. And no high voltage UPS can tolerate missing batteries. Entire systems may collapse given a single point of failure.
Typically, given the peculiarities of its batteries— without correction—the voltages in such a system will tend to be different. The longer such differences remain uncorrected, the more the voltage patterns start drifting. There comes a point at which these patterns begin to show a significant difference (1 volt or more). That is what we see in the screenshot right.
So, UPS makers have offered another solution: re-dundancy. Redundant UPS systems feature two or more strings of batteries. This reduces the risk of UPS failure, but has several disadvantages: increased cost, increased space requirements, increased service costs. And it is still no guarantee. The user has no idea what is going on in any given battery string at any given time. The reduction in risk accom-plished by adding more strings is only theoretical.
To counteract the risk of unnoticed battery failures and loss of backup, UPS users began installing auto-matic transfer switches to redundant UPS systems and using emergency generators as a backup in case of power failure. This is both an extremely costly solution and one that involves a further risk. Emer-gency generators on standby require at least a ten second startup time—time enough to lose data in the event of battery failure. The generator‘s starter battery is still another risk factor. The battery remains the Achilles’ heel of any backup system known to man!
In light of this fact, the Battery Management System (BMS) has become fashionable.
It is out position a complete Battery Management System should not only detect imminent battery fail-ure, it should 1) tell the user why batteries are failing, and 2) provide a reliable Advance Warning System, and 3) initiate actions to counteract battery issues. In a word, a good BMS should not only monitor but regulate.
By virtue of its patented Equalization (Balancing) process, BACS® is the only BMS on the market that does both: monitor and regulate!
The graphic below shows the battery history in a UPS that might be found in any data center today. It is five years old; the float voltages of the batteries in the string it contains vary within a window of +/- 1.8V. (That‘s a large window!) During the period of time described in this readout, this UPS system was not managed by BACS.
BACS VIEWER SCREENSHOT
As seen by BACS, after 5 years of operation, a UPS with
64 12V batteries presents voltage patterns that vary widely
(a window of +/-1.8V).
On the lower picture, we see quite a different screenshot…
BACS VIEWER SCREENSHOT
As seen by BACS, the same 5 year old system as shown in the previous graphic, this time, after the application
of the patented Equalization (Balancing) process. Within a few hours, this process brings the variance in float
voltage to within 1/100th of a volt of the level recommended by the manufacturer.
Applying the patented Equalization (Balancing) process used by BACS to this same system, note that we are able to eliminate virtually all of the variance in float voltage. The Equalization (Balancing) process brings the float voltage of all batteries in the string to within +/- 1/100th of a Volt, this despite such factors as connections, location within the string, and so on and so forth. BACS keeps each of the batteries at full change and at the float voltage recommended by the manufacturer
A general description about the principle of equalization and an explanation of the reasons it extends battery life drastically and extends cycle life by at least a factor of 3 is scientifically is explained in the INTELEC Paper 32.1 ―Life Extension through charge Equalization of Lead-Acid Batteries‖ by Philip T. Krein, Member of IEEE.
The BACS® patent has been established based on scientific principles and investigations conducted by GENEREX from 2002-2004.
A diagram of a BACS module installation:
A calibrated measuring cable with 2 high-voltage fuses connected to the positive and the negative Battery poles uses a 4-string wire for measuring the individual battery data.
The BACS module measures through an integrated sensor the surface temperature of the accumulator, the voltage and the impedance.
The BACS module is available in 5 different types: 16Volt, 12Volt, 6Volt, 2Volt and for NiCd, NiMH and Lithium Ion batteries with a wide range of 1.2 V- 3Volt.
At Equalization (Balancing) mode, the thermal energy is transferred through the cooling fins to the environment, until the process has finished.
The status is shown at an LED on the front panel.
Simple installation or retro-fitting through Velcro tapes and bus cables.
2 external and 1 UPS slot version
Management of up to 330 BACS C modules in up to 10 parallel strings.
Includes a full qualified UPS-SNMP & MODBUS manager at COM 1 for the monitoring of a UPS/inverters/rectifiers or other devices with a serial interface.
COM 2 for optional environmental sensors (e.g. temperature, humidity, current, acid fill level, etc.).
1 programmable alarm relay output, 1 alarm-LED, 1 alarm buzzer, mute button.
Integrated web server for status display configuration of all alarm thresholds (battery impedance, voltage, temperature, UPS alarms, environmental alarms, etc. network messaging system (email, SMS, SNMP, RCCMD, MODBUS and (optional) PROFIBUS, LONBUS, BACnet.
Data logger for all measuring data, (optional) current sensors for charge- and discharge current measuring.
Compatible to UNMS monitoring software and LED matrix remote display.
Integrated DIN rail mounting on all external manager types.
BACS® modules REV 3 |
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Construction |
Measuring modules with equalisation |
Power |
Consumption at normal operation: 15-20mA |
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Measuring precision |
Internal resistance : < 10 % at C40, < 5% at C20/30 |
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Reference HIOKI |
Voltage : < 0,5 % |
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Interfaces |
2x RJ10 for BACS battery bus |
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Housing |
ABS housing (UL certified, flame retardant, cooling fins) |
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dimensions, weight |
55 x 80 x 24 mm = 2,17 x 3,15 x 0,94 in. (B x H x T), 45g |
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Operating condition |
Temperature 0 - 60°C, max. humidity 90%, not condensing |
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Int. protection rating |
IP 42 coated against dust and condensate) |
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High voltages security tested |
Protection against high ohmic batteries fault voltages up to 150 Volt /per module (fuse opens). At higher voltages the fuse opens, but BACS module is damaged. All REV 3.1 modules are designed for fault voltages up to 600 Volt |
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MTBF (calculated) |
87.600 hours (10 years) |
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Module BACS® C20 |
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Order No. BACSC20 |
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REV 3 module for 12Volt 7-600Ah lead batteries (UL certified) |
Voltage range |
9.7V - 17V`` |
RI range |
0.5-60mOhm |
Equalisation power |
0.15 A |
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Module BACS® C23 |
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Order No. BACSC23 |
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Order No. BACSC23 |
Voltage range |
9.7V - 21V |
RI range |
0.5-60mOhm |
Equalisation power |
0.12 A |
Module BACS® C30 |
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Order No. BACSC30 |
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REV 3 module for 6Volt 7-900Ah lead batteries |
Measuring value |
4.8V - 8.0V |
RI range |
0.5-60mOhm |
Equalisation power |
0.3 A |
Module BACS® C40 |
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Order No. BACSC40 |
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REV 3 module for 2Volt 7-5000Ah lead, NiCd, NiMH batteries (UL certified) |
Measuring value |
1.25V - 3.2V |
RI range |
0.02-6mOhm |
Equalisation power |
0.9 A (at 2.27V) |
Module BACS® C42 REV 3 for NiCd/NiMH & Li-Ion |
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Order No. BACSC42 (Discontinued) |
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REV 3 module for 2,4 Volt NiCd/NiMH & 2Volt lead batteries |
Measuring value
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1.2V - 3.6V |
Equalisation power
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0.9 A (at 3.4V) |
BACS WEBMANAGER BUDGET (external version) |
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Order No. BACSKIT_B |
Processor and memory |
32-Bit RISC-processor, 32 MB storage / 64 MB RAM up to 256 BACS modules |
Power consumption |
At 12V default power supply = 200mA (the connected BACS modules at the BACS BUS |
Interfaces |
3x RS-232 interfaces, (COM1= UPS/power device, COM2 =Multipurpose, COM3=BACS battery bus) |
Display |
2x LED (Manager status, UPS/device alarm) |
Housing |
PVC, RAL 7035 (light gray) ETL listed, FCC class A |
Dimensions |
69 x 30 x 126mm = 2,72 x 1,18 x 4,96 in. (L x W x H) |
W eight |
110g |
Operating condition |
Temperature 0 - 60°C, max. humidity 90%, not condensing |
MTBF (calculated) |
70.000 hours (8 years) |
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BACS WEBMANAGER BUDGET SC (slot version) |
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Order No. BACSKIT_BSC |
Processor and memory |
32-Bit RISC-processor, 32 MB storage / 64 MB RAM up to 256 BACS modules |
Power consumption |
At 12V default power supply = 200mA (the connected BACS modules at the BACS BUS CONVERTER will be supplied via own power supply and need +5mA per BACS module |
Interfaces |
3x RS-232 interfaces, (COM1= UPS/power device, COM2 =Multipurpose, COM3=BACS battery bus) |
Display |
2x LED (Manager status, UPS/device alarm) |
Housing |
Slot card ―SC format‖ for UPS devices witch compatible slots |
Dimensions |
60 x 20 x 130mm = 2,36 x 0,79 x 5,12 in. (L x W x H) - Slot card „SC format― |
W eight |
90g |
Operating condition |
Temperature 0 - 60°C, max. humidity 90%, not condensing |
MTBF (calculated) |
70.000 hours (8 years) |
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BACS WEBMANAGER BUDGET III 12Volt (UL certified) |
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Order No. BACSKIT_B_III |
Processor and memory |
32-Bit RISC-processor, 32 MB storage for battery history in days ( see Example table in the |
Number of Sensors & Power |
Stabilized external power supply 12V 2000mA supplies 1830mA for up to 330 BACS C |
consumption |
modules (à 5mA) and other BACS bus sensors (See datasheet of other BACS sensors for |
Interfaces |
3x RS-232 interfaces, (COM1= UPS/power device, |
Display/Signal |
1x Buzzer with mute button |
Housing |
130 x125 x 30mm = 5,12 x 4,92 x 1,18 in. (W x L x H) |
Dimensions |
180g |
W eight |
Temperature 0 - 60°C, max. humidity 90%, not condensing |
Operating condition |
70.000 hours (8 years) |
MTBF (calculated) |
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BACS WEBMANAGER BUDGET III 18V-72V |
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Order No. BACSKBIII72 |
Description |
Identical to BACSKIT_BIII, but designed for power supply directly from the 24Volt or 48Volt |
BACS WEB-MANAGER BUDGET III 120V - 370V |
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Order No. BACSKBIII370 |
Description |
Identical to BACSKIT_BIII, but designed for power supply directly from the 24Volt or 120Volt to 370 Volt batterie group. The external pluggable power s upply is |
BACS BUS CONVERTER 3 & 5 |
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Construction |
Conversion and galvanic separation of the BACS battery bus to the BACS W EBMANAGER BUDGET plus real time clock (RTC) timer for the BACS W EBMANAGER, if no timeserver is at hand into the network environment |
Power supply |
Stabilized external 12V/2000mA for up to 330 BACS module (à |
Interfaces |
1xRJ12 for COM3 BACS W EBMANGER BUDGET |
Display |
Optical display (LED) additionally, alarm buzzer with acknowledge button |
Housing |
Polystyrene housing in grey |
Dimension, weight |
91,5 x 67 x 25 (W x H x D), 120g, Temperature 0 - 60°C, max. humidity 90%, not condensing |
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BACS SPLITTING BOX |
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Construction |
Passive splitter for BACS communication cables. For the optimization of the cable lenghts and for the creation of an optical pleasant wiring. In addition to the extension of the 2 BACS bus inputs at the BACS CONVERTER. W e recommend to use the BACS SPLITTING BOX, if you want to connect more than 50 |
Power supply |
Not required, passive element for the star wiring of BACS bus cables |
Interfaces |
1x RJ10 for the connection to BACS CONVERTER or rather |
Housing |
Polystyrene housing in grey |
Dimension, weight |
91,5 x 67 x 25 (B x H x T), 90g, |
BACS DC current sensor 200/400 |
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Construction |
Ord. No: BACS_CS200 or rather BACS_CS400 |
Power supply |
No external power supply, device is powered by the BACS bus |
Power consumption |
70mA |
Interfaces |
2x RJ10 for BACS bus cable, pluggable system |
Housing |
DIN rail |
Dimension, weight |
110x90x76mm 4,33 x 3,54 x 2,99 in. (LxW xH), 380g |
Operating condition |
Temperature 0 - 60°C, max. humidity 90%, not condensated |
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BACS DC current sensor 500/1000/1500 |
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Ord. No: BACS_CS500, BACS_CS1000, BACS CS_1500 |
Description |
DC current sensor for measuring battery string discharge and charging process +/-500A, 1000A, 1500A DC Other technical details identical to BACS_CS300/400 |
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BACS bus interface GX_R_AUX |
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Construction |
Order No. GX_R_AUX |
Power supply |
No external power supply, device is powered by the BACS bus |
Power consumption |
ca. 170mA |
Interfaces |
4 potential-free relays, 4 digital inputs |
Relay output |
50VAC - 2A, 30VDC - 1A |
Dimension, weight |
75 x 75 x 45mm = 2,95 x 2,95 x 1,77 in. (LxW xH), 170g |
Housing |
Polyamid, pluggable system DIN rail |
Operating condition |
Temperature 0 - 60°C, max. humidity 90%, not condensated |
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BACS external temperature sensor |
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Order No. BACS_TS |
Construction |
External temperature sensor for BACS REV 2 and REV 3 for |
Measuring range/precision |
-10°C - +90°C, +/- 1 °Celsius |
Dimension, weight |
Length 25 cm from BACS housing, sensor dimension 2cm x 1.5cm x |
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BACS measuring cables |
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Order No. BC4B-xxxxx |
Specification: |
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cable cross section: |
2x1,50mm² |
nominal voltage U0/U |
300V/500V |
fuses: |
1000V/10A und 1000V/1A |
temperature range : |
-25°C - 70°C |
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Order No. BC5-xxxxx, |
Specification: |
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cable cross section: |
2x0,75mm² |
nominal voltage U0/U: |
300V/300V |
fuses: |
1000V/2A und 1000V/500mA |
temperature range. |
-25°C - 70°C |
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Order No. BC5-xxxxxH |
Specification: |
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cable cross section: |
2x0,75mm² |
nominal voltage U0/U: |
300V/300V |
fuses: |
1000V/2A und 1000V/500mA |
temperature range: |
-15°C - 70°C |
cable coating: |
halogen free in acordance with |
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All measuring cables are avialable in various length and different connection terminals. See latest BACS pricelist for details. |
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BACS bus cables |
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Order No. B2BCRJx |
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High quality halogen free twisted pair RJ10 BACS communication bus cable. Various lengths available. See latest BACS pricelist for details. |
Control cabinet for BACS® systems. Plug-play, with AC input plug (Euro) ready to install. W ith optical and audible display on the outside door, protection class IP 56. Only an AC power supply and Ethernet cable has to be provided by the customer. Easy connection of inputs and outputs through a strip terminal. There is a wide range power supply installed for every BACS ® W EB- MANAGER with an input from 110V-240V AC, max. power consumption is 20W att depending on the number of BACS ® components in the bus. Output of the power supply is 12Volt 1600mA, which results in 1140mA available for up to 330 BACS ® modules or other components in the BACS® bus (For BACS® bus components power consumptions, see data sheets of the BACS® devices).
Order No. BACS_CC1
1 * BACS WEBMANAGER BUDGET III,
1 * 12V Power supply (100 - 240V, 50/60Hz),
1 * CAT 6 Ethernet socket,
1 * Alarm contact (potential-free) , max. 230VC, 30VDC, 8A
in front door integrated:
1 * POW ER LED, 1 * BACS ALARM LED
6 * spare bus communication cable
Dimension: 400 x 500 x 210 mm = 15,75 x 19,69 x 8,27 in. (W xHxD)
Order No. BACS_CC2
2 * BACS WEBMANAGER BUDGET III,
2 * 12V Power supply (100 - 240V, 50/60Hz),
2 * CAT 6 Ethernet socket,
2 * Alarm contact (potential-free) , max. 230VC, 30VDC, 8A
in front door integrated:
2 * POW ER LED, 2 * BACS ALARM LED
8 * spare bus communication cable
Dimension: 400 x 500 x 210 mm = 15,75 x 19,69 x 8,27 in. (W xHxD)
Order No. BACS_CC3
3 * BACS WEBMANAGER BUDGET III,
3 * 12V Power supply (100 - 240V, 50/60Hz),
3 * CAT 6 Ethernet socket,
3 * Alarm contact (potential-free) , max. 230VC, 30VDC, 8A
in front door integrated:
3 * POW ER LED, 3 * BACS ALARM LED
10 * spare bus communication cable
Dimension: 500 x 500 x 210 mm = 19,69 x 19,69 x 8,27 inch (W xHxD)
Order No. BACS_CC4
4 * BACS WEBMANAGER BUDGET III,
4 * 12V Power supply (100 - 240V, 50/60Hz),
4 * CAT 6 Ethernet socket,
4 * Alarm contact (potential-free) , max. 230VC, 30VDC, 8A
in front door integrated:
4 * POW ER LED, 4 * BACS ALARM LED
12 * spare bus communication cable
Dimension: 500 x 500 x 210 mm = 23,62 x 29,92 x 8,27 in. (W xHxD)
Order No. BACS_CC5
5 * BACS WEBMANAGER BUDGET III,
5 * 12V Power supply (100 - 240V, 50/60Hz),
5 * CAT 6 Ethernet socket,
5 * Alarm contact (potential-free) , max. 230VC, 30VDC, 8A
in front door integrated:
5 * POW ER LED, 5 * BACS ALARM LED .
14 * spare bus communication cable
Dimension: 600 x 800 x 250 mm = 23,62 x 29,92 x 8,27 in. (W xHxD)
BACS CONTROL CABINET Type 6
Order No. BACS_CC6
6 * BACS WEBMANAGER BUDGET III,
6 * 12V Power supply (100 - 240V, 50/60Hz),
6 * CAT 6 Ethernet socket,
6 * Alarm contact (potential-free) , max. 230VC, 30VDC, 8A
in front door integrated:
6 * POW ER LED, 6 * BACS ALARM LED .
16 * spare bus communication cableDimension: 600 x 800 x 250 mm
23,62 x 29,92 x 8,27 in. (W xHxD)
