Group: PULS
Catalog excerpts
DC-UPS CONTROL UNIT No Change in Output Voltage in Battery Mode Selectable Output Voltages in Battery Mode 1-Battery-Concept Each 12V Battery is Charged and Monitored Separately for Longest Battery Life Precise Battery Charging by Using a Temperature Sensor Battery Size Selector for Small or Large Batteries 50% BonusPower®, 30A for up to 4s High Breaking Capacity for Branch Protectors Smart Battery Diagnostics and Monitoring Functions 3 Year Warranty GENERAL DESCRIPTION SHORT-FORM DATA The UB20.241 uninterruptible power supply controller (DC-UPS) is used in addition with a 24V power supply and batteries to bridge power failures or voltage fluctuations. This configuration can prevent expensive downtimes, long restart cycles and loss of data. Input voltage Output voltage A unique feature of the UB20 series is the constant voltage in battery mode, which will not change as the batteries discharge. The buffer voltage in battery mode can be set to four different output values. Another feature is the utilization of two independent battery chargers for the two 12V-batteries in series. This feature makes matching batteries unnecessary and allows for precise battery charging, testing and optimized usage of the battery capacity to achieve the longest battery service life. Output current The UB20.241 includes many battery diagnostic functions that ensure a reliable operation of the entire system. Furthermore, a temperature controlled charging extends the life of the batteries. It also includes a selectable buffer time limiter as well as ready, buffering and replace battery contacts. For safety and maintenance, an inhibit input signal is included which prevents a battery backup. ORDER NUMBERS 18-30Vdc in power supply mode in battery mode Allowed battery sizes Buffer time Temperature range Derating Dimensions Weight Standard DC-UPS unit Battery module 24V, 7Ah UZK24.071 without batteries Battery module 24V, 12Ah UZK24.121 without batteries Sensor & center tap board Panel/ wall-mount bracket Side-mount bracket IECEx Class I Div 2 planned Marine, planned Jan. 2015 / Rev. 2.0 DS-UB20.241-EN All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0
Open the catalog to page 1The information presented in this document is believed to be accurate and reliable and may change without notice. No part of this document may be reproduced or utilized in any form without permission in writing from the publisher. Jan. 2015 / Rev. 2.0 DS-UB20.241-EN All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0
Open the catalog to page 21. TERMINOLOGY AND ABBREVIATIONS DC-UPS Abbreviation for Uninterruptible Power Supply system with a DC input and a DC output. A DC-UPS utilizes batteries as back-up energy source. Power supply mode Describes a condition where the input voltage is in the rated input voltage range and the supplying power supply can deliver a sufficient amount of current for the DC-UPS and the load. Additionally it is assumed that the output is loaded within the allowed limits and the battery is charged, if necessary. The mode can also be called “Normal mode”. Battery mode Describes a condition where the input...
Open the catalog to page 32. INTENDED USE This device is designed for installation in an enclosure. Use an appropriate enclosure which protects against mechanical, electrical and fire hazards. This device is intended for professional use in areas such as in industrial control, office, communication, and instrumentation equipment. Do not use this device in equipment or systems where malfunction may cause severe personal injury or threaten human life. 3. INSTALLATION NOTES This device may only be installed and put into operation by qualified personnel. The input must be powered from a SELV or PELV power source. Use...
Open the catalog to page 4Risk of electrical shock, fire, personal injury or death. - Turn power off and disconnect the battery fuse before working on the device. Protect against inadvertent repowering. - Make sure that the wiring is correct by following all local and national codes. - Do not modify or repair the unit. - Do not open the unit as dangerous voltages may be present inside. - Use caution to prevent any foreign objects from entering the housing. - Do not use in wet locations or in areas where moisture or condensation can be expected. - Do not touch during power-on, and immediately after power-off. Hot...
Open the catalog to page 54. INPUT / OUTPUT The output is connected to the input through a back-fed protection (MOSFET). In power supply mode, the output voltage follows the input voltage decreased by a small voltage loss. In battery mode, the output voltage is a constant voltage, which can be preselected in one of four voltages. Input Voltage Range: At voltages within the input voltage range, control functions such as LEDs, monitoring features, relay contacts, etc. are functioning normally. Within the input voltage range the unit can either be in power supply mode or in battery mode. Normal Operating Voltage Ranges...
Open the catalog to page 6Input voltage Input voltage range Control functions such as LEDs, monitoring features, relay contacts, etc. are working. The unit can either be in power supply mode or in battery mode. See Fig. 4-2. Temporarily allowed, no damage to the DC-UPS. The red error LED will report “Input Voltage”, charging and buffering are not possible. See Fig. 4-2. Absolute max. voltage with no damage to the unit. Ranges, where the unit does not switch to battery mode. See Fig. 4-2. Range A for a 22.5V buffer voltage setting Range B for a 24V buffer voltage setting Range C for a 25V buffer voltage setting Range...
Open the catalog to page 7Output current in power supply mode in battery mode typ. Overload behavior in power supply mode in battery mode Output short circuit current in power supply mode in battery mode Return current Allowed voltage between input and earth (chassis) Capacitive and inductive loads 1) 2) 3) Continuously allowed For max. 5s Continuously allowed see Fig. 4-7 (interpolate linearly between 22.5V and 26V) For typ. 4s (BonusPower® 4)) see Fig. 4-7 (interpolate linearly between 22.5V and 26V) For typ. 25ms, output voltage stays above 20V, (dynamic peak current), see Fig. 4-9. Description see footnotes 1)...
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