Siemens 6EP1931-2DC21

ambient temperature
during operation	-25...+60C; with natural convection
during storage	-40...+85C
during transport	-40...+85C
environmental category according to IEC 60721	Climate class 3K3, 5

certificate of suitability
as approval for USA	cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259
C-Tick	No
CE marking	Yes
shipbuilding approval	ABS, DNV GL

display version
for normal operation	Normal operation: LED green (OK), floating changeover contact "Bat/OK" to setting "OK" ("OK" means: Voltage of the supplying power supply unit is greater than cut-in threshold set at the DC UPS module); Lack of buffer standby: LED red (alarm), floating changeover contact "Alarm/Bat" to setting "Alarm"; Battery replacement required: LED red (alarm) flashing with approx. 0.25 Hz, floating changeover contact "Alarm/Bat" switching with approx. 0.25 Hz; Energy storage > 85%: LED green (Bat > 85%), floating NO contact "Bat > 85" closed; Permissible contact current capacity: DC 60 V/1 A or AC 30 V /1 A
in buffering mode	Buffered mode: LED yellow (Bat), floating changeover contact "OK/Bat" to setting "Bat"; Prewarning battery voltage < 20.4 VDC: LED red (alarm), floating changeover contact "Alarm/Bat" to setting "Alarm"; Energy storage > 85%: LED green (Bat > 85%), floating NO contact "Bat > 85" closed

efficiency in percent
at rated output voltage for rated value of the output current ty	95%
in case of operation on rechargeable battery typical	94.5%

Input
adjustable response value voltage for buffer connection	22...25.5V; Adjustable in 0.5 V increments
adjustable response value voltage for buffer connection preset	22.5V
input current at rated input voltage 24 V rated value	6A; + approx. 0.6 A with empty battery
input voltage range	22 ... 29 V DC
supply voltage at DC rated value	24V
voltage curve at input	DC

Interface
product component PC interface	No

Interface
design of the interface	without

Mains buffering
design of the mains power cut bridging-connection	Dependent on connected battery and load current, see selection table battery module and mains buffering times as well as the relevant important information notes!
type of energy storage	with batteries

Mains buffering
adjustable charging current maximum note	factory setting approx. 0.4 A
charging current	0.2A-0.4A

Mechanics
for control circuit and status message	10 screw terminals for 0.5 ... 2.5 mm

Mechanics
for rechargeable battery module	24 V DC: 2 screw terminals for 1 ... 4 mm

Mechanics
at input	24 V DC: 2 screw terminals for 1 ... 4 mm
at output	24 V DC: 4 screw terminals for 1 ... 4 mm
depth of the enclosure	125mm
height of the enclosure	125mm
type of electrical connection	screw-type terminals
width of the enclosure	50mm

output current
in buffering mode	0...6A
in normal operation	0...6A
peak current	6.3A
property of the output short-circuit proof	Yes
rated value	6A
supplied active power typical	144W

output voltage
formula for output voltage	Vin - approx. 0.5 V
in buffering mode at DC rated value	24V
in normal operation at DC rated value	24V
output voltage in buffering mode at DC	19...28.5V
startup delay time typical	1s
voltage increase time of the output voltage typical	60ms

power loss [W]
at rated output voltage for rated value of the output current ty	7W
in case of operation on rechargeable battery typical	8W

product function
reverse polarity protection against energy storage unit polarity	Yes
reverse polarity protection against input voltage polarity rever	Yes

required spacing
bottom	50mm
electrical accessories	Battery module
fastening method	Snaps onto DIN rail EN 60715 35x7.5/15
left	0mm
MTBF at 40 C	1085776h
net weight	0.4kg
other information	Specifications at rated input voltage and ambient temperature +25 C (unless otherwise specified)
product feature of the enclosure housing can be lined up	Yes
reference code according to IEC 81346-2	RB
right	0mm
top	50mm

Safety
galvanic isolation between input and output	No
operating resource protection class	Class III
protection class IP	IP20

standard
for emitted interference	EN 55022 Class B
for interference immunity	EN 61000-6-2