DC UPS module 15 A

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S module 15 A - Industry Mall - Siemens WW

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Interactive Catalog Siemens IA&DT Automation technology DC UPS with battery modules DC UPS module 15 A

Overview

Compact design, only 50 mm wide

Completely uninterruptible mains buffering through immediate electronic connection of the battery as soon as the DC

UPS input voltage falls below the value set by means of DIP switches.

High level of safety and availability through monitoring of operational readiness, battery supply line, battery aging

(message "Battery replacement necessary") and battery charge (message "Battery charged >85%")

Support for automatic warm restart of industrial PCs through selectable shutdown characteristics.

Optionally with serial or USB interface.

SW tool available for download from

http://www.siemens.de/sitop

Executes under Windows NT4.0, Windows 2000 and Windows XP.

Technical specifications

Product DC UPS module 15 A

Power supply, type 15 A

Order No. 6EP1 931-2EC21 5) 6EP1 931-2EC31(with serial interface)6EP1 931-2EC42(with USB interface)

Input L+/M in normaloperation

Controlled DC voltage

Rated voltage value Vin

rated1)

24 V DC

Voltage range 22 ... 29 V

Connection threshold for

battery

22.5 V DC 0.1 V (factory setting),

adjustable in the range 22 ... 25.5 V DC (in 0.5 Vincrements)

Rated current Iin rated 15 A + approx. 1 A with empty battery

Mains buffering

Mains buffering or buffer time Dependent on connected battery and load current, seeselection table battery modules and mains buffering

times as well as the relevant important informationnotes!

On/off contro l c ircu it External isolated NO contact requ ired(max. load 15 V DC / max. 10 mA).With an open control circuit, the battery is isolated fromoutput L+, thus canceling mains buffering. If there is noinput voltage, a quiescent current of approximately0.3 mA is drawn from the battery disconnected from the

output.

Methods of setting thebuffering time

Adjustable using DIP switches to a maximum bufferingtime up to forced shutdown due to exhaustive dischargeprotection (at approx. 19 V) or to a time limit of5 ... 635 s (in 10 s steps)

Interruption Adjustable using DIP switch, either:

Interruption in output voltage despite returning input

voltage for min. 5 s following expiry of set buffer

time to support automatic restarting of industrial PCs

No forced interruption on expiry of the set buffer

time

Output L+/M in normaloperation

Rated voltage value Vout rated 24 V DC (output voltage of SITOP power supply)

More

Ordering data Product Information All about DC UPS module 15 A

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Voltage range Input voltage Vin less approx. 0.5 V DC

Startup delay Approx. 1 s

Voltage rise Typ. 60 ms

Output current Iout 0 ... 15 A

Dynamic current withoverload

Electronic current limitation to 1.05 ... 1.4 x Iout rated for

approx. 80 ms, then electronic shutdown of the outputwith automatic restart attempts (approx. 20 s intervalsbetween restart attempts)

Dynamic current with short-

circuit

Electronic current limitation to 1.5 ... 3 x Iout rated for

approx. 20 ms, then electronic shutdown of the outputwith automatic restart attempts (approx. 20 s intervalsbetween restart attempts)

Output L+/M with batteryoperation

Rated voltage value Vout rated 24 V DC (from battery module)

Approximate voltage range 27 ... 19 V DC at Iout = 0.05 x C x 1/h or

24 V at Iout = 1 x C x 1/h or

23 V at Iout = 2 x C x 1/h

(C = total connected battery capacity in Ah), 19 Vswitch-off threshold for exhaustive discharge protection

Output current Iout2) 0 ... 15 A (permanently permissible)

Dynamic current with

overload

Electronic current limitation to 1.05 ... 1.4 x Iout rated for

approx. 80 ms, then latching switch-off of output (restartfollowing return to normal operation)

Dynamic current with short-

circuit

Electronic current limitation to 1.5 ... 3 x Iout rated for

approx. 20 ms, then latching switch-off of output (restartfollowing return to normal operation)

Output +Bat/-Bat in normaloperation

I - Vcharging characteristic(first constant current I, then constant voltage V)

End-of-charge voltage V 26.6 V DC 0.1 V (factory setting for +40 C batterytemperature),adjustable in the range 26.3 to 29.3 V (in 0.1 Vincrements)

Charging current I Approx. 0.7 A (factory setting), adjustable to 0.35 A or0.7 A(charging is carried out with closed and open on/offcircuit)

At a battery voltage of < 6 V (batteries defective),charging is not carried out as a protective measure.

Efficiency/heat loss

At Vout rated, Iout rated approx. 96.2 % / 14 W

With battery operation,approx.

96 % / 15 W

Protection and monitoring

Revers polarity protection Against polarity reversal on input voltage and batteries

Over load protection In accordance wi th "dynamic cur rent with over load" innormal operation (automatic restart attempts) or inbattery mode (restart following return to normaloperation)

Short-circuit protection In accordance with "dynamic current with short-circuit" innormal operation (automatic restart attempts) or inbattery mode (restart following return to normaloperation). Built-in (not accessible) 16 A fuse (6 A and15 A on DC UPS module) or 64 A fuse (40 A on DCUPS module).

Exhaustive discharge

protection

Automatic shutdown when battery voltage falls below

approx. 19 V.At a battery voltage of < 6 V (batteries defective),charging is not carried out as a protective measure.

Monitoring"Wire breakage in batterycircuit"

Alarm signal if battery circuit not closed or if it opensduring operation (cyclic test approximately every 20 s)

Monitoring"Battery replacement

required"

Alarm signal flashing at approx. 0.25 Hz repetitionfrequency (approx. 2 s alarm, approx. 2 no alarm,

approx. 2 s alarm, etc.).Check every 4 hours with 3 ohm load for 1 s if no buffermode or switch-off has taken place within 4 hours.

Monitoring"Battery charge status >85 %"

Indication whether batteries are charged to at least85 % of residual capacity still available depending onaging

Signaling3)

Normal operation Green LED (OK) and isolated changeover contact


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"24 V DC OK/Bat" at setting "24 V DC OK"4)

Buffer or battery mode(battery supplies loadalone or in addition to PS inthe case of overload)

Yellow LED (Bat) and isolated changeover contact"24 V DC OK/Bat" at setting "Bat" (de-energizedposition)

Alarm (buffer not ready, orprewarning from < 20.4 Vbattery voltage)

Red LED (alarm) and isolated changeover contact atsetting "Alarm" (= de-energized position).

Causes of the buffer not being ready during normaloperation can include: Off status or open on/off controlcircuit, battery module not connected, polarity reversal ordefective battery (battery voltage < 18.5 V) or wirebreakage between battery and UPS module. Scanningand thus updating of the signal every 20 s. Causes for

absence of buffer readiness during buffer mode can be:Accumulator voltage has dropped below 20.4 V DC (=

prewarning before shutdown through exhaustivedischarge protection) and shutdown of the accumulatordue to overload, short-circuit, exhaustive dischargeprotection or expired buffer time. The red LED then goesout.

"Battery replacement

required"

Red LED (alarm) flashing at 0.25 Hz and floating

changeover contact (alarm) switching at approx. 0.25 Hz

"Battery charge > 85 %" Second green LED (Bat > 85%) and floating NO contactclosed (de-energized position = open)

Compatibility switch (only with6EP1931-2FC21)

-

Optional interface and

software

Serial interface Only on 6EP1 931-2.C31Output of all signals and receipt of the "Remote timerstart" signal.

Technical design: PC-compatible. 8N1 send andreceive, 9600 baud, 8 data bits, 1 stop bit, no parity bit.Required connection to PC: 1 : 1 interconnected 9-polesub D extension cable (connector/socket), only

pin 2 (RXD), pin 3 (TDX) and pin 7 (RTS) are required.

USB interface Only on 6EP1 931-2.C42Output of all signals and receipt of the "Remote timerstart signal.Technical design: Specification 2.0 at full speed, i.e.2 Mbit/s. Supplied with +5 V by DC UPS ("self-powered").Required connection to PC: Commercially available 4-

core shielded cable, 90 Ohm, max. 5 m, USB series "A"connector to PC and USB series "B" connector to DCUPS

Software A software tool for reading out and processing thesignals (can run under Windows 2000, Windows XP andWindows Vista) is available for downloading from the

Internet at http://www.siemens.com/sitop.Further information about the interface is available there.

Control signals

On/off control signal Buffering is terminated or the battery is disconnectedfrom the output by opening the control circuit or bymeans of DIP switches on the device (DIP switch mustbe in "Off" position). All other functions are retained.

"Remote timer start" via serial

interface or USB

Starts mains buffering for the set buffering time

Safety

Pr imary/secondary isolat ion No

Protect ion class Class III (ext. circuit and power- supply unit: safety extralow voltage required in accordance with EN 60950)

EMC

Emitted interference EN 55022 Class B

Noise immunity Noise immunity according to EN 61000-6 -2

Ambient conditions

Ambient temperature during

operation

0 ... +60 C with natural convection

Transport/storagetemperature

40 ... +70 C

Degree of protection (EN60529)

IP20

Humidity class Conditions of use in accordance with EN 60721, climateclass 3K3 (relative humidity 5 % ... 85 % and absolute

humidity 1 g/m3 ... 25 g/m3 ; no condensation)

Approvals

CE mark Yes
http://www.siemens.com/sitophttp://www.siemens.com/sitop


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UL/cUL (CSA) approval cULus-listed (UL 508, CSA C22.2 No. 107.1) Fi leE197259

Mechanics

Input connections 24 V DC 2 screw terminals for 1 ... 4 mm 2 /17 ... 11 AWG

Output connections 24 V DC 4 screw terminals for 1 ... 4 mm 2 /17 ... 11 AWG

Battery module connections24 V DC

2 screw terminals for 1 ... 4 mm 2 /17 ... 11 AWG

Connections for control circuitand alarm signals

10 screw terminals for 0.5 ... 2,5 mm 2 /20 ... 13 AWG

Dimensions (W x H x D) inmm

50 x 125 x approx. 125

Weight, approx. 0.4 kg (with serial or USB interface: 0.45 kg)

Installation Snaps onto DIN rail EN 60715 35x7.5/15

1) All SITOP 24 V DC power supplies are permissible without restriction2) Two battery modules connected in parallel are required in order to achieve more than 20 A up to max. 40 A output current on the DC UPSmodule.3) Permissible contact rating: 60 V DC/1 A or 30 V AC/1 A.4) "24 V DC OK" means: voltage of the power supply unit is greater than the battery connection threshold set on the DC-UPS module 6.5) SIPLUS module 6AG1 931-2EC21-2AA0 for extended temperature range -25 C to +60 C and use under medial load (e.g. chlorine-sulfuratmosphere).

Dimensional drawings

Version 1.0.4044.2

20110127_153409
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DC UPS module 15 A