Detcon X40-32-N7 - Manual (Page 37)

Model X40
Model X40 Instruction Manual Rev. 3.3 Page 31 of 64
CONTACT
INPUT
COMM
M
S
D
L
S
D
NO NC
COM
Relay Contacts
Input 4
Input 3
Input 1
Input 2
There are four relay
contact inputs on
each DI-4 module.
mA +
mA +
+ mA
+ mA
NO NC
COM
Relay Contacts
4mA Reading
20mA Reading
Figure 31 Model DI-4 Contact Input Module
NOTE
The terminals on the DI-4 module are rated for a maximum of 30VDC. They are designed
to accept solid or stranded wire between 12AWG and 24AWG.
NOTE
External devices attached to the equipment 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 penetrations for the dry contact inputs 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 DI-4 module has a unique Modbus™
address and is addressed within the range 01h-7Fh.
NOTE
DI-4 modules must be connected to the RS-485 Master port, they must be addressed
correctly in the range of 01h-7fh.
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.
3.4 Analog 4-20mA Outputs (AO-4)
There are four 4-20mA outputs in each Model AO-4 module (See Figure 32). These can be used as signal
inputs to other control devices. AO-4 modules can be installed on the DIN rail of the controller.