Detcon X40-32-N7 - Manual (Page 40)

Model X40
Model X40 Instruction Manual Rev. 3.3 Page 34 of 64
NOTE
External devices attached to the RL4 outputs must require a tool to access their wiring
terminals to prevent unauthorized access.
NOTE
Hazardous live voltages of external devices attached to the equipment must be isolated or
disconnected prior to accessing the terminals of the external devices
NOTE
The cable penetration for the relay outputs must be made in the bottom of the enclosure
(See Figure 13). All penetrations must use a NEMA4 rated cable gland (Appleton p/n CG-
2575 or equivalent) to prevent water ingress and restrict access to the internal circuits of the
X40.
Serially address the module in hex using the two rotary switches on the front panel labeled MSD (most
significant digit) and LSD (least significant digit). Ensure that each RL-4 module has a unique Modbus™
address. Set the relay Modbus™ address for each RL-4 module in accordance with Table 3.
Table 3 RL-4 Relay Modbus™ Addresses
Bank Module Decimal Hex
Bank1 1 128-129 80-81
Bank2 2 130-131 82-83
Bank3 3 132-133 84-85
Bank4 4 134-135 86-87
Bank5 5 136-137 88-89
Bank6 6 138-139 8A-8B
Bank7 7 140-141 8C-8D
Bank8 8 142-143 8E-8F
If the N4X unit is ordered with an integral alarm strobe, it will be connected to the Alarm 1 connector of
the first RL-4 installed in the enclosure.
The RL-4 is configured to Bank1, Alarm1, but can be
reconfigured by the user (refer to Section 5.2.4).
NOTE
The RL-4 modules must be connected to the RS-485 Master Port, and must be addressed
correctly in the range of 80h-8Fh.
A DI-4 module connected properly to the controller will have a flashing DATA COMM LED to indicate a
valid communication status and will provide the controller with a 4mA reading when the contact from the
field device is open and a 20mA reading when the contact is closed for the corresponding channels. All
other information will need to be modified on the Channel Details screen for each channel corresponding to
the appropriate DA-4 module.
3.6 RS-485 Serial Gas Sensors
RS-485 Serial Sensors will communicate directly with the X40 via Modbus™. Connect the five wires of
the Modbus™ capable sensor to the Modbus™ DIN rail mounted terminal blocks labeled RS-485
MASTER and VDC Out (Figure 34).