Germany Siemens/Siemens 6EP1931-2EC21 24V buffer for several hours Continuous process

6EP1931-2EC21 Introduction: Siemens SITOP DC DIN Rail Mount UPS Uninterruptible Power Supply 6EP1931-2EC21, 22 → 29V dc input

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Model features introduced

SITOPDCUPS
The DC UPS module can be combined with at least one 24 V battery module and one SITOP power supply unit. This combination means that longer power failures can be bridged without any interruptions. Even when larger buffer currents are required, this DC UPS is equipped with a maintenance-free lead battery for optimal safety. It can delay power failures for up to several hours and can deliver up to 40A.

Features and Benefits:

24V buffering for several hours for continuous processes

Maintenance-free battery modules with capacities from 1.2Ah to 12Ah

Work readiness, battery feeders, aging, and state of charge can be monitored to ensure high reliability and availability

Thanks to the integrated battery management, the load and battery have a long working life

Set via DIP switch: battery connection threshold, charging terminal voltage, charging current, bridging time

Free software tool for easy configuration and integration in PC-based systems
Product application information
These battery modules can be connected in parallel and can bridge power failures for several hours. The bridge allows a process or part of a process to continue, record measurements without interruption, and maintain normal communication. High-performance industrial PCs, which must be shut down, also have high energy requirements. This is especially true when large panels need to be kept running during downtime. DC UPS are used in machine tool production, in the textile industry, in production lines, in filling equipment, and also in obstruction lights in wind power plants.

DC-UPS	6A module	15A module	40A module
Rated input voltage	DC 24V
Voltage range	DC 22→29V
Maximum input current	6.6A	16A
Battery switching threshold	22.5V, adjustable 22→25.5V
Power buffer:	Depends on the battery:
With 3.2Ah battery (+25°C)	6A after about 10 minutes	15A after about 45 seconds	–
With 7Ah battery (+25°C)	6A after about 30 minutes	15A after about 7 minutes	40A after about 2 minutes
Output UA1:
Voltage power supply operation	Input voltage - approx. 0.5V
Voltage buffer operation	DC 27V (disconnected load voltage)... 19V (low voltage disconnect)
Output current	0→6A	0→15A	0→40A
Short-circuit protection	Electronic current limiting
Output UA2:
Charging terminal voltage	27V, adjustable 26.3→29.3V
Charging current	0.2/0.4A	0.35/0.7A	1.0/2.0A
monitoring	Low voltage disconnection, wire disconnection, battery life, state of charge
Status signals	Power operation, buffer operation, alarm
Operating temperature	0→+60°C
Installation	Depending on the standard installation rails DINEN50022, 35x15/7.5
Dimensions (WxHxD)	50x125x125mm		102x125x125mm
weight	Approximately 0.45kg		1.1kg

Battery module	size	Ambient Temperature:	weight
24V/1.2Ah	96x106x108mm	+5→+40°C	2.0kg
24V/3.2Ah	190x151x82mm	+5→+40°C	3.5kg
24V/7Ah	186x168x121mm	+5→+40°C	6.0kg
24V/12Ah	253x118x121mm	+5→+40°C	9.0kg

Approved CE, UL/cUL

Model parameters are introduced

attribute	numeric value
Model	SITOPDC
Input voltage	22→29V DC
Output voltage	21.5→28.5V DC
Installation type	DIN rails
communication	Serial port, USB
Current rating	15A
length	125mm
width	50mm
depth	125mm
Maximum temperature	+60°C
weight	600g
Minimum temperature	0°C
size	125x50x125mm

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Germany Siemens/Siemens 6EP1931-2EC21 24V buffer for several hours Continuous process

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