Detcon 1600A-N4X - Manual (Page 5)

1600A-N4X
1600A-N4X Instruction Manual Rev. 0.2 Page 1 of 38
1.0 Introduction
The Detcon Models 1600A-N4X is a “user-configurable” multi-channel alarm controller. The 1600A is
configurable for up to 16 channels. Through the use of I/O modules the 1600A can receive analog inputs from
either 4-20mA, or can alternatively poll serial sensors via RS-485 Modbus™.
The 1600A-N4X controller uses a modular design approach that allows the user to customize the selection of
stand-alone input and output modules. I/O modules are available in four channel sets for 4-20mA inputs, relay
outputs, and 4-20mA outputs. Detcon’s I/O Modules are DIN rail mounted and stackable allowing for
seamless system expansion. These addressable I/O modules can be located remotely near the gas sensors to
simplify wiring.
The status of sensor inputs is displayed on a backlit graphic display that utilizes a touch-screen user interface.
Typical sensor status includes channel number, tag name, gas type, concentration, and alarm/fault status. Each
input channel can be assigned up to three alarm levels and fault. A standard RS-485 or optional RS 232 serial
output is provided for communication with PLC’s, PC’s, and monitoring devices.
The controller can be powered by 110/220VAC, 20-30VDC, or both. The enclosure is rated for NEMA 4
locations. Remote mounted gas sensors (purchased separately) can include serial or 4-20mA input devices
such as; toxic gas, combustible gas, or oxygen deficiency sensors or contact closure inputs such as liquid level,
temperature, pressure, heat, smoke, pull station, etc. Additional features include: one-touch Alarm Inhibit,
Alarm Reset, and Alarm Silence (Acknowledge) functions. An Alarm Reset Switch is also mounted on the
outside of the enclosure on the left side. The 1600A controller provides for a unique combination of user
programming flexibility and customizable expansion capability, in a low-cost and simple-to-operate package.
Alarm 1
Alarm 2
Alarm 3
Fault
Sensor 15
Sensor 14
Sensor 16
to Master Control
Sensor 1
Sensor 3
Sensor 2
Sensor . . .
RS-485/RS-232
System, DCS, PC, etc.
Power Input
The 1600 will only
handle a maximum of 16
channels.
Model 1600A-N4X
Muiti-Channel Gas Detection Control System
Figure 1 Interface Diagram