Vingtor Stentofon VMP-5004, Installation & User Manual

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VSP-Ex System Installation & User Manual
2 A100K10872
VSP-512
Select station, press call
for 10 seconds,
giving signal to the station.
Lift of the handset, press
the handset button and
keep it pressed during
the whole conversation.
2
General Description
2.1 Introduction
The Intrinsically Safe Set for VSP consists of:
VSP-5012 Buffer unit for a safe area, and operating unit VSP-512 to be mounted in a hazardous
area.
The VSP-512 can call all other units in the total system.
Alternative:
Buffer unit VMP-5004 / VMP-5008 for safe area, and Operating unit VSP-512 to be mounted in a
hazardous area.
The VSP-512 can call 4 - 8 other units in the total system.
Buffer unit:
VSP-5012 VSP-512
Alternative: VSP-5004/VSP-5008
The operative unit VSP-512 is designed for use in a hazardous area: II (1)G Ex ia IIC T4 Ta=60°C
The buffer unit VSP-5012 is designed for use in a safe area: II (1)G [Ex ia] IIC Ta=60°C
2.2 Operating Unit
The Operating Unit VSP-512 enables communication to and from a person located in hazardous
areas. The conversation is possible via the unit handset.
2.3 Buffer Unit
The two Zener barriers MTL 7760ac handle the communication lines.
The relay IM1-22Ex-R2-ch (6 pieces in VSP-5012 and 2-4 pieces in VSP-5004/VSP-5008) provide
for call functions from the operation unit in a hazardous area to the VSP system units in a safe
area.
Other relays provide output for connection of Ex-approved external signaling units operating on
24V DC.
When calling a VSP station in the hazardous area from a VSP station located in the safe area, a
relay K2 to K5 in the buffer opens up for supplied power to the separate call signal device in the
hazardous area.