DWEx-LE-MR Explosion-proof Call Station

DWEx‑LE‑MR is used as a subscriber equipment of public address and paging system, as well as the emergency notification system being part of the ARMTELICS digital communication network (DCN) manufactured by Armtel LLC, Russia.

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Parameter

Value

Permissible supply voltage range, VDC

36 to 60

Provision for power supply connection of any polarity

Yes

Power supply via phantom power line (PoU) using U-interface links, in versions w/o 25 W amplifier

Yes

Static current w/o 25 W amplifier and with heating off, maximum, mA, supply voltage 60/48/36 V

39/46/60

Static current w/o 25 W amplifier and with heating on, maximum, mA, supply voltage 60/48/36 V

146/175/229

Static current with 25 W amplifier and with heating off, maximum, mA, supply voltage 60/48/36 V

68/81/218

Static current with 25 W amplifier and with heating on, maximum, mA, supply voltage 60/48/36 V

173/209/368

Maximum consumption current w/o 25 W amplifier and with heating off, maximum, mA, supply voltage 60/48/36 V

105/127/166

Maximum consumption current w/o 25 W amplifier and with heating on, maximum, mA, supply voltage 60/48/36 V

207/254/340

Maximum consumption current with 25 W amplifier and with heating off, maximum, mA, supply voltage 60/48/36 V

749/941/1025

Maximum consumption current with 25 W amplifier and with heating on, maximum, mA, supply voltage 60/48/36 V

856/1054/1190

Main amplifier maximum power, W

0,43 ± 10 %

25 W amplifier maximum power, W

25 ± 10 %

Amplifier rated output voltage, V

100

Audible signal transmission channel bandwidth (at minus 3 dB), Hz

от 300 до 6800

Communication protocol

Armtel

Ua/Ub DWEx LE MR line interface

Uk0-interface/
Up0-interface

Rated supply voltage, including via phantom power line (PoU), VDC

Maximum voltage switched by a built-in relay, VDC

Maximum power switched by a built-in relay, W

Sound pressure level of the integrated speaker at maximum volume, not less than, dB
at a distance of 0.3 m
at a distance of 1 m

100
99

Number of programmable direct connections/functions

2 / 4 / 6
(depends on the version)

Explosion-proofing labelling as per GOST 31610.0-2014

1Ex d e ib IIC T4 Gb X
Ex tb ib IIIC T135°C Db X

Climatic category as per GOST 15150-69

В1

IP degree of protection according to GOST 14254-2015 (IEC 60529:2013)

IP66/IP67

Permissible ambient air temperature range, °C

–60 to +60

Permissible atmospheric pressure range, kPa

84.0 to 106.7

Relative air humidity at +25 °C, %

100

Max. overall dimensions, mm

520 × 130 × 205

Weight, kg, max
– RMLT.465311.025
– RMLT.465311.025-01
– RMLT.465311.025-02
– RMLT.465311.025-03
– RMLT.465311.025-04
– RMLT.465311.025-05

8,55
8,70
8,85
9,25
9,40
9,55

DWEx‑LE‑MR can be used in continuous cycle production facilities in metallurgy, chemical, oil and gas, metal processing, and wood processing industries, as well as in facilities of the Ministry of Railways, the Ministry of Emergency Situations, the Ministry of Internal Affairs, the Ministry of Defence, etc. where standard loudspeaking equipment cannot be used due to operating conditions.

DWEx‑LE‑MR is intended for use as part of the DCN communication system, in the ARMTELICS communication system with digital Uk₀-interface connection, and in other communication systems with digital Up₀-interface connection.

establishing connection with other subscriber terminals using direct buttons with indication of the programmable functions’ status;
two-way simplex loudspeaking communication with other subscriber terminals (intercoms);
making outgoing group calls;
receiving incoming group calls;
broadcasting alarms, alerts and other recorded messages to other individual subscribers and groups of subscribers;
receiving alarms, alerts and other recorded messages from other subscribers, both individually and as part of a group;
indication of incoming connections, indication of unavailability of other intercoms;
maintaining the call priority system;
broadcasting to an external loudspeaker through a 25 W amplifier;
manipulating the external light signalling device (lamp) using the built-in relay.

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