Siemens SITOP UPS500S Ex Manuale di istruzioni per l'uso - Pagina 6

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Signaling

"Normal operation", i.e. the input voltage at the DC-UPS basic unit is higher than the set cut-in threshold. The loads are being fed by the line-side power supply. If a

expansion module is connected, it is fully charged. Under normal operation, the green LED (o.k.) is illuminated and relay contact X2.2 – X2.3 (o.k.) is closed.

">85% charge", i.e. capacitor is loaded more than 85% (available rest capacity dependent upon aging). The second green LED (Bat>85%) is illuminated and relay

contact X2.7 – X2.8 is closed. (second green LED off and relay contact X2.7 – X2.8 open (de-energized position when unit is disconnected) means : Bat<85%, i.e.

capacitor charge below 85%)

"Floating operation", i.e. the input voltage is lower than the set cut-in threshold. The loads are being supplied by the DC-UPS. In floating operation, the yellow LED

(Bat) is illuminated and relay contact X2.1 – X2.2 (Bat) closed (de-energized position when unit is disconnected).

Alarm signal "Buffering not ready": When the "Buffering not ready" signal is active, the red LED (Alarm) is illuminated and relay contact X2.4 – X2.5 (Alarm) closed

(de-energized position when unit is disconnected). Causes for the "Buffering not ready" state in normal operation are as follows: "OFF" operating state, defective

capacitors or capacitor voltage < 7V. The interval for polling the operating states ON/OFF, capacitors or capacitor voltage < 7V, and for activating the relevant signal

output is 20 s during normal operation. After the end of the failure the signal remains till to the next polling.

The "Alarm" signal in floating operation means that the capacitor voltage has dropped to <12V and automatic disconnection is imminent. When the floating operation

has been finished due to overload, short circuit, exhaustive discharge protection or buffering timeout, the red LED (Alarm) gets dark, but relay contact X2.4 – X2.5

remains closed. Load rating of relay contacts (SELV (ES1) must be maintained): 30 V DC/1 A.

USB:

The signals are additionally outputs via a PC-capable USB interface. They are each displayed in the shape of 5

characters of plain text. The assignment is shown in the table on the right. A tool for reading out and processing the

signals is available free of charge on the Internet at http://www.siemens.com/sitop-ups. This website also contains

further information about the interface.

Technical specification: The USB interface is according to specification 2.0, the communication runs only at full speed,

i.e. 12Mbit/s. The Interface will be supplied by the DC-UPS with +5V ("self-powered"), signal state output every 75ms ±

20%; data output 29ms ± 20%, pause 46ms ± 20%. The connection to the PC is made by means of a usual 4-wired

shielded USB-cable with a wave-resistance of 90Ohm, a USB Series"A" connector to the PC and a USB Series "B"

connector to the DC-UPS and a maximum length of 5m. The cable contains two 28 to 20 AWG "non-twisted" USB-

supply wires (VBUS and GND) and two 28 AWG "twisted pair" data wires (D+ and D-).

Pin assignment: Pin1: VBUS (+4.4V to +5.25V DC), transmit data on Pin2 (D-) and Pin3 (D+), Pin4: GND

Receiving data: Receive of the character "R" (Signal Remote Timerstart) starts the timer of the DC-UPS basic unit with

the set buffering time (table 2). After the set buffering time, floating operation ends or, during normal operation, the

output voltage is interrupted for 5 s if "disconnection" is set. Receipt of the character "S" (shutdown signal) starts the

timer in the DC-UPS basic unit with the set buffering time (table 2). After the set buffering time the DC-UPS basic unit is

switched off retentively. It is restarted by disconnecting the DC supply voltage for at least 1 s. In combination with a

SITOP power supply the line voltage has to be interrupted for approx. 10 s for a restart.

Environment

Operating conditions acc. to EN 60721-3-3, climate model 3K3 (relative air

humidity 5% to 85%, absolute air humidity 1 g/m

Stationary operation, weather protected, pollution degree 2

Temperature for storage and shipment:

Temperature for operation:

Overvoltage category: II to 2000 m

Weight

6EP1933-2EC51-8AA0

1.2kg

6EP1935-5PG01-8AA0

0.7kg

Installation Instructions

In order to guarantee effective cooling, the unit must be vertically installed such that the input and output terminals and the incoming air slots are at the bottom. A

clearance of at least 50 mm must be left above and below the unit. Assembly / disassembly see page 8.

To reduce EMI and thermal strain DC-UPS and capacitor modules should be installed at least 50cm away from commutating chokes! Interface (USB) and control leads

(ON/OFF control circuit) must not be laid directly in parallel to power leads or cables (especially leads between frequency converter and motor or frequency converter

and commutating choke).

To minimize EMI the distance to those leads should be at least 10cm.

If the device is to be used in a hazardous zone it must be installed in an enclosure with degree of protection IP54 or higher. This enclosure must comply with the

requirements of EN 60079-0.

Before commencing with the installation or any repair work, switch off the plant main switch and lock it in the "OFF" position. Please read the operating

instructions for SITOP power.

Connection and Terminal Assignments

Terminals

Function

X1.1

Input voltage DC 24V

X1.3, X1.5

Output voltage DC 24V

X1.2/X1.4, X1.6

Input/output voltage DC 0V

X2.1,2,3

Signal: Normal operation / Floating operation

X2.4,5,6

Signal: Buffering not ready / ready

X2.7,8

Signal: charge >85%

X2.9/X2.10

On/Off jumper (no jumper =Off)

Serial interface or USB-interface

X10

Capacitor module

Use copper wire approved for 60/75 °C.

CAUTION

The external circuitry of all terminals (including signaling and status contacts) must meet the safety requirements stipulated by

EN61204-7: SELV (ES1).

A5E51289135, 12.2021

to 25 g/m

, no condensation)

-40 to +70°C

0 to +60°C

Cable cross-

section

1.0 ... 4mm

17...11 AWG

0.5... 2.5mm

20...13 AWG

Standards

Degree of protection: IP20 to EN60529

Protection class III, designed to be connected to regulated 24 V DC power

supplies

Protection class III to EN60950

UL 508 / CSA C22.2 File E197259

The device complies with ATEX directive 2014/34/EU; EN 60079-0; EN 60079-7

ATEX (see page 8), DNV GL and ABS

Comments

Screw-type terminals for screwdriver with

4.5mm blade width

Recommended tightening torque 0.7-0.9Nm

Screw-type terminals for screwdriver with

3.5mm blade width

Recommended tightening torque 0.5-0.7Nm

See description above

Tailored wire set

English

Signal

Buffering ready

Buffering not ready

Normal operation

Not normal operation

Not floating operation

Floating operation

>85% charge

<85% charge

6 von 8

SITOP UPS 500S

SITOP UPS 501S

Text

BUFRD

ALARM

DC_OK

DC_LO

*****

*BAT*

BA>85

BA<85