Detcon 700 Series Remote Sensor/Alarm Relay Module With Profibus DP Interface - Manual (Page 8)

700 Profi-RAM
NOTE: If the 700 sensor and Profi-RAM are directly connected, it is not necessary to
install/use the transient protection module that is shipped with every 700 Gas Sensor.
detcon inc.
Sensor
detcon inc.
MODEL
XX-700
PGM1
ZERO
PGM2
SPAN
Model 700
Power Input
mA Output
Profibus Interface
Fault
Annunciator
Alarm 1
Annunciator
Alarm 2
Annunciator
Figure 6 Installation with 700 Gas Sensor
If remote sensor separation is required, the Profi-RAM will be separated from the 700 sensor. Remote
separation distances of up to 1000 feet are possible with the recommended cables.
NOTE: It is highly recommended to install the interconnecting cabling inside rigid metal
conduit to eliminate potential EMI and RFI interference.
detcon inc.
Sensor
detcon inc.
MODEL
XX-700
2.115"
PGM1
ZERO
PGM2
SPAN
2"
Model 700
Power Input
mA Output
Profibus
Interface
700 Profi-RAM
Module
Cabling to/from Remote
700 Series Sensor
Remote 700
Series Sensor
Transient Protection
Module in Detcon
standard J-Box
Figure 7 Remote 700 Gas Sensor with Profi-RAM
The recommended cables for remote sensor separation are Belden 8770 (18AWG three wire, Shielded cable)
for connection of power and mA signal return, and Belden 9841 for serial Modbus™ communications. Use
Belden 3079A for the Profibus communications.
NOTE 1: The yellow (reserved wire) does not need to be connected in the remote sensor
configuration.
NOTE 2: Both the 3 wire power/mA cable and the 2 wire Modbus™ serial communications
cable are required when remote wiring between the Profi-RAM and the 700 Gas Sensor.
Profibus RAM I.M. Rev. 0.3 Page 4 of 14