Detcon 700 Series Remote Sensor/Alarm Relay Module With Profibus DP Interface - Manual (Page 7)

700 Profi-RAM
Profi-RAM Electronics
Package
External Wiring
Interconnect
Wiring
Connectors
Input Port
The Electronics
Package sets
on the
stand-offs in the
enclosure
Provide at least
a 6" Service
Loop for all
wiring
6"
Input Port
Figure 4 Exploded View of Assembly
1.3 Field Wiring
The field wiring connections are made on the backside of the Profi-RAM using a series of removable
connector blocks. There is 6-pin terminals block for connection to the 700 Gas Sensor (labeled 700 Sensor), a
9-pin terminal block for connection to the 3 relay contacts (labeled Relays), a 3-pin terminal block for
connection of power and mA output (labeled Host) and a 5-pin terminal block for the Profibus Connection.
NOTE: It is critical to provide 5-7 inches of service loop wiring on customer wiring
connections, such that the Profi-RAM can be removed from the stand-offs and the connector
blocks can be accessed.
700 Sensor
Connections
Unit Power and
mA Output
(No connection)
Alarm Relay
Connections
Profibus
Connections
Figure 5 Interface connections
Typically the 700 Gas Sensor is connected directly to the Profi-RAM if there is no requirement for remote
sensor separation (
). In this case, the 700 sensor will not require its own junction box and it is not
necessary to install/use the transient protection module shipped with the 700 sensor. The 700 series sensor
may arrive from the factory pre-assembled with the Profi-RAM in the j-box, but only if it is ordered in this
configuration. In this configuration, the wires from the 700 series sensor will be directly connected to the
Profi-RAM terminals labeled “700 Sensor”. It is recommended to Use Belden 3079A for the Profibus
communications.
Figure 6
Profibus RAM I.M. Rev. 0.3 Page 3 of 14