Detcon SmartWireless CX - Manual (Page 9)

Sentinel CX
Sentinel CX Sensor Station IM Rev. 1.4 Page 5 of 26
1.6 Sensor Inputs
The SmartWireless® CX Sensor Station includes a Sensor Input PCA that accepts 4-20mA inputs from up
to 4 attached sensors. The PCA includes two rotary switches to set its Modbus address (Figure 3). This
address is set to 01 for SmartWireless® systems using a CXT or Model X40 controller. If an MCX-32
controller is being used, this address needs to be unique for each CX Sensor Station in the system. For an
MCX-32 system, the addresses should start at 40h and continue sequentially for each CX in the system.
Sensor Connector Ratings
Voltage: 9-11.2 VDC
Current: 100 mA max through any single sensor connector
Modbus Address
LSD Switch
Modbus Address
MSD Switch
Figure 3 Sensor Input PCA
Four "quick connects" on the side of the CX are for sensor connection (Figure 4), supply power to the
sensor from the internal battery and accept the 4-20mA signal from the sensor.
NOTE
Power supplied to the sensors is 11VDC. Any attached sensor must be designed to work at
this voltage level.
The four sensor input lines are fused at the PC board level for safety purposes. These fuses are not
designed for field replacement and shall not under any circumstances be attempted to be changed out by
anyone but Detcon Factory trained Service personnel.
CAUTION
These PC board mounted fuses are not designed for field replacement and shall not
under any circumstances be attempted to be changed out by anyone but Detcon
Factory-Trained Service personnel.