The Helpy 2W-EWMS from Rocom.

The Helpy 2W-EWMS from Rocom. (Photo: © Rocom Energie- und Kommunikationssysteme)

Emergency call device now also with VoLTE


The Helpy 2W-EWMS from Rocom is an emergency call device according to EN81.28 (2018), which offers not only emergency calls, but also extended surveillance and maintenance functions for Lift 4.0 applications.

The emergency call device is in a compact housing. It includes a battery power supply, LTE or VoLTE gateway, an RS232, RS485 and CanBUS interface for lift control, a two-wire bus line for up to 32 voice terminals, a two-wire bus line for external E-LMS maintenance modules four freely programmable sensor inputs, a USB connection and a WLAN access point.

The built-in battery is capable of operating the device in the event of a power failure for up to eight hours in stand-by and two hours in active operation. The battery is constantly checked and in the event of failure an alarm can be triggered via P100, SMS or voice message.

The emergency call device is connected via the LTE interface with the public telephone network and Internet. "The VoLTE version provides high quality voice communication with clear advantages also when it comes to transmitting the protocols to the emergency call control centre," explained the manufacturer. Moreover, simultaneous transmission of voice and data is possible. As a result, simultaneous access to the lift control or a serial video camera during an emergency call is possible.

Connect with VNDNet service via the Internet

Optionally, the device can also be connected with the VNDNet service via the Internet and in this way can constantly exchange functional and operating parameters for the extended surveillance and administrative functions, up to and including predictive maintenance.

The integrated RS232, RS485 and CanBUS interfaces not only permit remote connection to the lift control for maintenance purposes, but also on request transferring operating data and information from the controller to the VNDNet service.

The free cloud-based VNDNet service provides the option of remote maintenance via secure, encrypted Internet connections. However, it also serves as the data receptacle for the lift and emergency call operating parameters, which can then be prepared for example via the new MyLift cloud application for maintenance and predictive maintenance of lifts or also transferred via API to other applications.

Up to 32 voice terminals

Older design lifts can be brought up to the state of the art with the optional E-LMS maintenance modules or new lifts fitted with a maintenance function independent of the controller.

Up to 32 voice terminals can be connected with a two-wire bus, of which 16 are active and 16 passive. These permit lift groups of up to eight lifts to be connected to a single device: eight cars, eight pits and 16 voice terminals on or below the car.

The likewise have extended maintenance functions, such as automatic testing of microphones and loudspeakers, active testing of emergency call buttons and monitoring the connection between the voice terminal and control centre with corresponding alarm transmission in the event of failure.

Configuration via browser

Configuration of the emergency call device is possible via the integrated web domain to any data device using a browser via the built-in WLAN access point. This connection also permits direct wireless connection for maintenance purposes to the lift controller using the integrated serial RS232, RS485 and CanBUS interfaces. The access point is correspondingly protected for this purpose and features an adjustable range.

Other configuration options exist via a micro USB connection and PC with Estant programming software, SMS, DTMF suffix dialling or via the Internet and the new MyLift cloud application.

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