Specifications

122 | Personal Security Data Book
Use of existing contacts
Existing contacts (switches, sensors etc.) in combination
with a Bosch DP6000 system with Multi-purpose coupler
are used.The existing contacts are connected to an MPC
which is designed to reliably interface between the
existing contacts and the DP6000 system.
Multi-purpose coupler (MPC)
The MPC is connected to a dedicated central control
personal computer (alphadesk PC), which provides
operator control for all paging functions, including
paging calls with numeric and alphanumeric messages,
call conversions and call monitoring functions (see fig.1).
The MPC functions as an interface between the
Alphadesk PC and the external contacts, switches, or
sensors etc and includes:
• Each MPC has a maximum of 32 contact inputs and 2
output relay contacts (see Figure 1 and 2). The relays
can be activated by: - activating an input contact -
communication failure between MPC and the
alphadesk PC - specific call on DP6000 bus line - via
keyboard of alphadesk PC - at the end of a call cycle
• Easy to install, a maximum of 31 MPCs can be
connected to the LBB 6000 card located in the
alphadesk PC giving in total a maximum of 992
contact inputs and 62 relay outputs.
• The contact inputs can be ‘voltage free’ or 12V DC
• Each input contact can be activated by ’opening’,
closing, pulsing or toggling
• Optocouplers are used to ensure complete galvanic
isolation of all the circuits from the coupler head.
Multi-purpose Coupler software
The MPC software package (LBB 6501) enables each
contact input of the MPC to be individually programmed
as either a ‘Call’,’Presence’or ‘Reset input’, or to start a
reroute function or as an input to control the control
relay outputs. Each programmed input determines how
often a call plus information is transmitted, repeated or
whether an assistance or alarm call is transmitted when
the generated call receives no reaction.
Bosch
Figure 2: MPC reroute function
Figure 1: Schematic diagram of DP6000 system with MPC