Detcon 410A RACK - Manual (Page 2)

terminations, Form C dry contact alarm outputs (normally open, normally closed and common),
4-20 ma outputs for remote recording devices, alarm reset, and 24 VDC input.
Form C relay outputs may be discreet, zoned or common by gold plated jumper tabs located
on the controller mother board.
1.2 SPECIFICATIONS
ELECTRICAL CLASSIFICATION: NEMA 1
DIMENSIONS: 13"W, 5"H, 8.25"D
CAPACITY: 4 Single Channels
POWER: 117 VAC to Power Supply Assembly; 24 VDC Input to Controller Motherboard
ALARM CONTACTS: Discreet Fault, Low, High, per Channel 2 Amp @ 30VDC/.6 Amp @ 125VAC
Common, Normally Open and Normally Closed
OUTPUTS: Discreet 4-20 MADC
OPERATING TEMPERATURE RANGE: -40°F to +175°F
POWER CONSUMPTION: <5 Watts per Channel (Power Supply Rated 57 Watts)
1.3 REMOTE RESET
The reset function is effective when the Model 10A's respective alarms have been pro-
grammed in the latching position and alarm conditions have passed. The alarm reset function is
common to all controllers and is activated by closing the circuit between the two reset contacts.
A normally open momentary switch is suitable.
1.4 INSTALLATION
01. Securely mount the 410A rack enclosure in accordance with the drawing in figure 1.
02. Connect 117 VAC input wiring to the lug-type terminal strip (labeled 120 VAC IN) on the
back of the power supply assembly (see fig 2). Line power current load is maximum 3 amps.
03. Connect the (optional) 24 VDC standby battery to the lug-type terminal strip (labeled AUX
DC IN) on the back of the power supply assembly (see fig 2).
Caution: Observe correct polarity when terminating all input / output field wiring. Failure
to do so may result in circuit damage on power up.
04. If applicable, connect a normally open momentary remote mounted switch to the lugless
terminal strip (labeled RESET) located on the controller mother board (see fig 2).
05. Refer to installation and wiring detail of remote mount sensor assemblies as detailed in
section 3.0. Terminate field wiring from sensors to Model 410A rack lugless terminal strips
located on the controller mother board (see fig 2).
Note: Based on the application and use of relay contact outputs, complete all wiring
terminations prior to application of power. Shut-in controls may be omitted until system
test is complete.
1.5 START-UP
Upon completion of all field wiring: Depress the power switch on the power supply assembly
front panel. Note that each Model 10A controller digital display illuminates. Varying readings
may occur during sensor warm-up. A 10 second alarm delay will occur on power up. Refer to
sections 2.0 and 3.0 for additional start-up detail.
Detcon Model 410A Rack Gas Detection System PG.2