Explosionproof information display, LED (with static inscription and scrolling text) VEL-T

Purpose

Explosionproof LED displays are intended for use within explosion hazardous areas as informational signages, as well as means for visual and sound announcement.

Features

• Information providing at option of the Customer by means of the following: static inscription (VEL-T display); dynamically changing inscriptions (VEL-T display “SCROLLING TEXT”); static or dynamic inscription, as well as sound signal. Regarding display with “SCROLLING TEXT” inscription can be programmed for execution of a number of visual effects such as: blinking, returning after disappear (for works consisting of 5 letters maximum), inscription stop for the required amount of time. Inscription length is almost not limited (4000 symbols). The possibility to display inscription in any language. Use of LED light sources allows reducing expenses for maintenance. Service life of LEDs is up to 100,000 h.
• At similar light intensity LED light source consumes energy by ten times less than incandescent lamp.
• Corrosion-resistant materials of the display body with special coating ensure long_service life.
• Three various fasteners including the possibility of transit laying through junction box VAD-RSP.
• The possibility to manufacture with storage battery ensuring operation of both VEL-T and VEL-T “SCROLLING TEXT” displays in case of voltage loss up to 90 minutes.
• The possibility to manufacture VEL-T “Scrolling Text” display with indication up to 4 independent text messages.
• Availability of testing button allowing immediately checking serviceability of storage battery.
• Red or green inscription of “Scrolling Text” is visible under any conditions particularly at clear sunlight!

Design

The display consists of aluminum body with powder coating. Protective light-transmission element from borosilicate glass is thermal-resistant, extra strong with high light-transmission capability, is installed on the body with sealant and fixed from above by means of cover (frame). Cover is fixed with body by bolts. Light-transmission element of the display is nonremovable structure. Display maintenance shall be performed through side temporary entry. Inside the display conversion block, LED light sources and terminal clamps are installed. Grounding bolts are installed inside and outside display. In variant with sound annunciator piezo sound annunciator is installed.

VEL-T Х1 – Х2 Х3 – Х4/Х5 – (Х6Х7) Х8 – Х9 – Х10 – “SOUND”

VEL-T – explosionproof information LED display made by VELAN

Х1 – display series:

     Sh – version of the display with РВ ExdI explosion protection

Х2 – fastening type:

     PM – pendant mounting

     Wl – wall

     Cl – ceiling

Х3 – information inscription. Inscription can be made both by order and chosen from a number of standard ones, for example, “EXIT”, “EXIT TO THE LEFT”, “EXIT TO THE RIGHT”, “NOT ENTER”, “FIRE”, “GAS”, “BEWARE OF ELECTRIC TRAIN”, “FOAM”, “AEROSOL”, etc.

For scrolling text inscription “SCROLLING TEXT” is indicated (with the possibility to generate up to 4 messages, and inscription text and generation algorithm are given in the note to the order)

Х4 – letter color:

     W – white

     R – red

     Y – yellow

     B – blue

     Z – green

     Bl – black

For “SCROLLING TEXT” display inscription color: R – red, Y – yellow, Z – green

Х5 – background color:

     W – white

     R – red

     Y – yellow

     B – blue

     Z – green

     Bl – black

For “SCROLLING TEXT” display background color is not indicated

Х6 – nominal supply voltage, V: 12, 24, 36, 110, 127,220

Х7 – current type: АС – alternating, DC – direct

Х8 – A – index indicating storage battery availability. In the absence of storage battery index shall not be indicated

Х9 – maximum diameter of laid cable for the display:

     14 – for cable with nominal diameter up to 14 mm;

     25 – for cable with nominal diameter up to 25 mm

Х10 is a type of climatic version and arrangement category:

     U1, UHL1 – for display with 1ExdIICT6 explosion protection marking

     U1,5 – for display with РВ ExdI explosion protection marking

“SOUND” index is indicated only for display version with light and sound announcement. TU 3461-009-002135569-2008

Explosion protection marking: 1ExdIICT6, РВ ExdI

Level of dust and moisture protection: IP65

Supply voltage, V: from 12 to 220 / DC ±10 %

Power consumption, W:

     with static inscription <10

     with scrolling text <7

Time of operation from storage battery: up to 90 minutes

For variants with sound:

     carrier frequency of sound signal, Hz: 2500–3500

     sound frequency modulation, Hz: 4

     Level of sound pressure, dB: 100 ± 2

Type of cable glands:

     wall or ceiling mounting: 1хG¾; 1хG1”; 1хG¼”; 1хМ25х1.5; 1хМ32х1.5; 1хМ40х1.5

     pendant mounting 2хМ25

Diameter of laid cable:

     9–14 mm

     14–25 mm

Number and cross-section of connected cores: 3х(1–2.5 mm²)

Class of protection from electric shock according to GOST 12.2.007.0: I

Display operation temperature:

     for U1, U1.5 version – from -40 °С to +55 °C

     for UHL1 version – from -60 °С to +55 °C

Number of technical conditions: TU 3461-009-002135569-2008

Overall and connection dimensions