Detcon X40-32-N7 - Manual (Page 11)

Model X40
Model X40 Instruction Manual Rev. 3.3 Page 5 of 64
N7 Enclosure
The X40-32-N7 controller is housed in an explosion proof NEMA 7 enclosure for indoor/outdoor use. The
N7 enclosure does not accommodate module installations. Modules must be mounted externally by the
customer. Any sensors and associated I/O modules will need to be powered separately by the customer.
The X40 controller can be powered directly by an external DC source provided by the customer, which
meets the input requirements (11.5-30VDC) of the unit. A plug-in male connector is provided for input
wiring terminations. A plug-in male connector provides quick disconnect convenience during replacement
or servicing.
An optional AC/DC converter board inside a condulet/J-Box is available from Detcon to only power the N7
controller with an AC voltage source. The converter uses AC inputs between 100-240VAC and provides a
24VDC (up to 167mA) output. Power to I/O modules or sensors must be provided by the customer.
Detcon offers an optional mounting plate for mounting the X40-32-N7 controller to a pole.
1.7 Alarms and Fault Condition
The alarms (Alarm 1, Alarm 2, Alarm 3, and Fault) can be used to control annunciating devices or as signal
inputs to other control devices. The field configurable magnetic user interface permits alarm values and
fault condition to cause an assigned relay or bank of relay outputs to fire, triggering external alarm devices.
The assigned relay outputs will return to normal state when a gas alarm or a fault condition clears.
Additionally, an external manual switch can be wired to the X40, acting as an acknowledge/reset switch
(Section 1.12).
When the X40 is in alarm, the display will remain on the channel group with the alarm. When there is
more than one alarm/fault, the controller will cycle through group pages with alarms/faults including the
transceiver, RL-4/alarm station, and AO-4 group pages. The user can manually cycle to any group page
that exists using the arrow switches. After a time out period, the X40 will resume page cycle protocols
based upon the existence of alarms/faults. Four LED indicators on the front panel show alarm/fault alarm
output status and are labeled respectively as ALM 1 (yellow), ALM 2 (yellow), ALM 3 (red), and FAULT
(blue).
All alarms can be configured Energized/De-Energized, Latching/Non-Latching and Silenceable/Non-
Silenceable for the relays.
Energized Mode
The normally open contact is closed if the alarm level has not been reached or if the sensor is not in fault.
Energized mode provides for fail-safe operation since a loss of power or cable failure will cause the contact
to be open.
De-Energized Mode
The normally open contact is open if the alarm level has not been reached or if the sensor is not in fault.
Silenceable
The corresponding alarm LED and relay can be deactivated by acknowledging the Alarm Silence function
on the front panel of the X40 controller or by activating the external acknowledge switch if installed
(Section 7.0).