Detcon X40-32-N7 User Manual
Page 9
Model X40
Model X40 Instruction Manual
Rev. 3.3
Page 3 of 64
The analog sensors and analog field devices interfaced to the I/O modules communicate with the COMM1
Modbus™ master port on the X40 controller via the I/O Module. Serial sensors interface directly with the
COMM1 port and do not require I/O modules. The types of sensors/field devices interfaced will dictate the
I/O modules required for the X40 controller.
Configuration inputs are completely field-configurable
providing a distinctive combination of flexibility and expansion for the customer.
I/O modules are factory installed unless specifically instructed otherwise. The number of I/O modules that
can be installed in the X40 enclosure is dictated by the enclosure due to physical space limitations.
Additional I/O modules in excess of the maximum allowed for each enclosure must be mounted in a
separate enclosure by the customer. The module limits for each enclosure varies dependent on the type of
enclosure, and the set-up of the particular unit. The typical limitations are as follows:
•
X40-32-N1P enclosure - maximum of two I/O modules (Mounted on the back, outside)
•
X40-08-N4X enclosure - maximum of six I/O modules inside
•
X40-32-N4X enclosure - maximum of twelve I/O modules inside
•
X40-32-N7 enclosure - does not accommodate module installations
The X40 controller can be configured for various I/O module combinations at the Detcon factory.
Customer application/site specific information must be provided on the Configuration Form. Information
provided is verified for correct quantity and type of I/O modules to support application/site requirements.
The customer should supply the following site specific information:
1. Number of gas/sensor channels.
2. Detcon sensor model number and I/O type (Modbus™ or 4-20mA) for each channel.
3. Range, units, and gas type for each channel.
4. Alarm level(s) for each gas channel.
5. Device Tag for each channel.
6. Assignment and set-up information for each relay contact.
7. Analog output requirements for each channel.
NOTE
The set-up configuration is executed by the user in the field (Section 5.0). Modifications to
are expected to take place on site due to requirement changes and/or system expansions.
Detcon I/O Modules (Purchased Separately)
Analog 4-20mA Sensor Inputs (DA-4)
•
Provides power to any two or three wire field sensors
•
Receives standard 4-20mA signal outputs from the sensors
•
Four 4-20mA inputs to support up to four sensors
•
Uses RS-485 Modbus™ RTU protocol to communicate with the controller and must have a
unique Modbus™ address set between 01 and 7Fh.
Dry Contact Inputs (DI-4)
•
Relay contact outputs from field devices can be connected
•
Four relay contact inputs
•
Can be installed on the DIN rail of the controller
•
Uses RS-485 Modbus™ RTU protocol to communicate the state of the contact outputs from
field devices and must have a unique Modbus™ address set between 01 and 7Fh.
Analog 4-20mA Outputs (AO-4)
•
Provide a 4-20mA output equal to the current concentration reading reported to the
controller for the associated channel.
•
Uses RS-485 Modbus™ RTU protocol to receive the 4-20mA output levels. AO-4 modules
must have a unique Modbus™ address set between A0 and AFh.