FAQ

Every few hours, in float mode, the charging voltage drops significantly, and the charging current increases. Over the next few minutes, the voltage rises back to the float voltage, and the current decreases to the float current. The best way to describe it would be that the charger steps back into the Fast/Boost charge mode for a few minutes and then returns to the float mode. Is that a normal operation?

No, it is normal that every 110 min the voltage decreases for 5 min but you should not see an increase of current, you should read zero. It is normal instead that after 5 minutes the voltage and the current go back to normal trickle charge conditions. It looks like a separate load might have been connected directly in parallel with the battery

Do you have BTU specifications (thermal/heat loss) for the DIN CBI models?

We specify power loss dissipation in our datasheet as “Dissipation power load max” in watt. The conversion from watt to BTU is the following: 1 watt is equal to 3.41214163513 BTU per hour.

There is a comment in the instructions manual that suggests that the battery connection is tested every 60 seconds, but the “no battery connected” Diagnosis LED illuminates within a couple of seconds after the battery is disconnected. What battery connection is tested every 60 seconds?

They are 2 different tests. Every 60 seconds we test the status of terminal connections. This is base on impedance measurement and we need to draw current from the battery for a short time. The “no battery connected” signal will appear quite immediately after the battery has been disconnected. This is simply based on voltage measurement

What are the accessories RTCONN, RJTEMP, and ERJ.CBI.004 means?

RTCONN: it is the cable for position 5

RJTEMP: it is the external temperature probe for battery charging compensation (please see the Instruction Manual)

ERJ.CBI.004: it is RJ45 cable for the connection of Two devices CBI Size 3 in Parallel (please see the Instruction Manual)

How/when do you decide to change from boost to float mode?

The transition from boost to float occurs when the current absorbed by the battery goes below 12% of the current set by the trimmer.

The charging diagram shows that in the Trickle/Float charging, the voltage is reduced to below the fast charge voltage and the current varies as a step function. When our battery (SLA) enters the trickle/float charging portion, we are not seeing any reduction in voltage, and the current does not act as a step function, it remains constant around 10-20mA. Is this expected?

Yes. The voltage and the current change only if you have set the fast charge jumper on its position. You have probably forgotten to set it.

The charge controller is rated to an operating temperature of -25°C. When the ambient temperature is below -20°C, you cannot charge an SLA but you can continue to discharge an SLA down to -40°C. When the ambient temperature is below -25°C, how will the performance of the charge controller degrade? Will the controller continue to supply battery power to the system in sub -25°C conditions?

Our CBI can work without problems or performance degradations till -40°C. We are outside of the guaranteed zone but they will work. If your concern is to prevent charging below -20°C, the best option is to install a separate thermostat on the battery output. It can be a simple external bi-metallic thermostat.

The Power Supply FLEX28024A have got a diode in the output?

The product FLEX28024A has an integrated diode.

If your request is about a redundant system, you have to insert also the item MR220 as shown in the instruction manual

Last week I began to test the DC-UPS CBI245A and I noticed that the Vdc output is 27.8 Vdc, similar to the battery output. The system is working with AC. These outputs are equal? Is this normal?

This is the normal condition of the CBI's World, the load Output follows the Battery Output, bat the maximum range it is until 28.8 Vdc (2.4 Vdc /cell max 15 hours) if you set jumper in position 6 like the instruction manuals, but only if you put the jumper in position 6.

Otherwise, the Outputs Voltage devices follow the maximum setting Voltage of Trickle Charge Jumper position.

In the battery type selection, there are options for both Sealed Lead Low and Sealed Lead High. I am not familiar with those terms and I don’t understand what is the difference between the two battery options. Can you please explain?

Sealed Lead High is also called AGM type. Only thing that differs from sealed lead low is the higher voltage in trickle charge

Occasionally in the float-charging mode, there is a reverse in current for a few milliseconds. Is this expected?

Yes. We test the quality of terminals connection with an impedance test every 60 sec

Could more detail be provided for the possible period for the “Recovery”, “Charge-boost/abortion” and “Charge-trickle/float” modes of charger operation? The specifications indicate a 15-hour maximum and 1 minute minimum for the boost mode. What governs this period and what are the periods for the other charging modes?

The passage from one stage of the battery charging is not determined by timing but rather by voltage and current measurements.

Recovery: stimulate the batteries with current pulses until the voltage does not exceed the threshold of 18V.

Charge-boost/absorption: the condition is terminated when the current absorbed by the batteries fall below 1/8 of the set from Charging Current Level (time out of 15 hours and a minimum of 1 minutes period).

Trickle/Float: he returns to the Boost Charge closing the pins of Fast Charge Enable (pos.6) or when the battery voltage falls below 24V and the current absorbed by the batteries is greater than ¼ of the set from Charging Current Level.

What is the difference between CBI2410A and CBI2410A/S? (I am not sure what does the battery startup means) Probably the same applies to CBI485A and CBI485A/S?

The “battery startup” means that the device can drive the output load also without input Mains but only with a battery connected; by Push-Bottom in the Front Panel of the device or by external Push-Bottom mounted in the Panel by RTCONN connector.

CBI2410A and CBI485A: Without “battery startup” (Jumper in position 5 for Boost or Trickle Charge)

CBI2410A/S and CBI485A/S: With “battery startup” (Jumper in position 5 for connection to RTCONN for connection to Push-Bottom mounted in the Panel)

Instruction manual

https://www.adelsystem.com/en/products/uninterruptible-power-supply-output-dc-cbi/datasheet/129/M/

I know, to have a regulated output will need to add regulator circuitry, but will be nice to have a regulated output to the load?

You have to know that the output load is stabilized,

This means that any variation of the absorption current of the Output Voltage is Fixed.

You have to put a regulator only if your customer needs a fixed voltage like 24 Vdc, because the device has not Industrial wide-range input of 20 – 30 Vdc that is standard.

There is a “max time boost-bulk charge” parameter in the specification of 15h. Does this mean the transition to float is controlled by a timer? Or maybe this timer is a safety

The max time boost charge of 15h meant as a time out security

There is a battery efficiency test every 220 minutes in float mode. How is this efficiency test conducted?

The life test is conducted by impedance test every 110 min. The internal software has a proprietary algorithm that can discriminate if a battery is sulfated. This test is conducted every 110 minutes and, if after 2 cycles in sequence (2x110 = 220 minutes) the test is positive, the diagnosis alarm will trigger indicating that the battery is sulfated and needs to be replaced. The life test can be disabled by setting a jumper in the appropriate position.

We would like to know how your devices differentiate between current to the batteries and current to the load

Our All in One series CBI has two independent outputs, one for the Load and one for recharging the battery, for which we can differentiate the current absorbed by the load from the current which flows in the battery.