Detcon 610A-FB User Manual

DDeettccoonn MMooddeell 661100AA--FFBB

Gas Detection System

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September 14, 1999 Document #684 Rev. 1.1

1.0 Introduction

1.1 Description

1.2 Multiple Alarm Relay Circuit

1.3 Alarm Disable

1.4 Remote Reset

1.5 Installation

1.6 Start-up

1.7 Power Supply

1.8 Warranty

1.9 Spare Parts

detcon inc.

11..00 II

NNTTRROODDUUCCTTIIOONN

Detcon Model 610AFB gas detection system consists of 3 major assemblies:

1. The NEMA 4 fiberglass control enclosure.

2. The single channel digital control modules.

3. The remote mount gas sensor assemblies.
The NEMA 4 fiberglass control enclosure is detailed in section 1.0 of the manual, the control modules in

section 2.0 and applicable sensor assemblies in section 3.0.

11..11 DD

EESSCCRRIIPPTTIIOONN

Detcon Model 610A-FB control enclosure is a NEMA 4X molded fiberglass case with hinged, gasketed door
and is designed for surface mounting in both indoor and outdoor locations. An unbreakable glass view win­dow is gasket mounted in the door. The NEMA 4X rating is by definition raintight and therefore suitable
for outdoor location in electrically non-hazardous environments.

The control enclosure houses the mainframe hardware compatible with Detcon Model Series 10A digital
electronic controls. Model 610A-FB system capacity is up to 6 channels consisting of remote mounted area
sensors and single channel electronic controls (Detcon Model 10A). The system is powered by AC line
power and/or 24 VDC unless otherwise specified at time of order.

The control enclosure includes, as standard operating controls (see figure 1); a power on/off switch, an
alarm disable switch and a line power fuse. Discreet output terminal strips located on the controller mother
board are provided for sensor terminations, Form C dry contact alarm outputs, 4-20ma outputs for remote

Detcon Model 610A-FB Gas Detection System PG.2

MODEL 610A-FB

POWER 2 AMP ALARM

HOUSTON T EXAS

C

C

K

K

O

O

L

L

L

MODEL 10A

MODEL 10A

MODEL 10A

H2S MONITOR

H2S MONITOR

H2S MONITOR

ppm

ppm

HIGH

HIGH
LOW

LOW
FAULT

FAULT

ALARM

ALARM
RESET

RESET

detcon inc.

detcon inc.

detcon inc.

HOUSTON, TEXAS

HOUSTON, TEXAS

HOUSTON, TEXAS

detcon inc.

C

C

K

O

L

MODEL 10A

H2S MONITOR

ppm

HIGH
LOW
FAULT

ALARM
RESET

detcon inc.

HOUSTON, TEXAS

C

K

ALARM
RESET

O

L

MODEL 10A

H2S MONITOR

ppm

HIGH
LOW
FAULT

ALARM
RESET

detcon inc.

HOUSTON, TEXAS

K

O

ppm

HIGH
LOW
FAULT

DISABLE

C

O

L

MODEL 10A

H2S MONITOR

ppm

HIGH
LOW
FAULT

ALARM
RESET

detcon inc.

HOUSTON, TEXAS

C

K

K

O

L

MODEL 10A

H2S MONITOR

ppm

HIGH
LOW
FAULT

ALARM
RESET

detcon inc.

HOUSTON, TEXAS

recording devices, AC power in, DC power in, remote reset as well as relay logic and power terminations for
the multiple alarm relay circuit. Form C relay outputs may be discreet, zoned or common by gold plated
jumper tabs located on the controller mother board. Form C dry contacts; common, normally open and nor­mally closed, are provided for 3 alarms; High, Low and Fault. Contacts are rated at .6 amp @125 VAC / 2
amp @ 30 VDC. When used in conjunction with the multiple alarm relay circuit (part #5026), contacts are
rated 8 amp @ 117 VAC / 5 amp @ 30 VDC.

Detcon Model 610A-FB Gas Detection System PG.3

Figure 1 - Controller Terminals

MODEL 610A-FB

+

GND

+DC

COM

GND

L1
L2

L1
L2

DC IN

RESET

AC IN

ALARM
POWER

POWER 2 AMP ALARM

HOUSTON TEXAS

C

O

K

L

MODEL 10A

H2S MONITOR

ppm

HIGH
LOW
FAULT

ALARM
RESET

detcon inc.

HOUSTON, TEXAS

C

O

K

L

MODEL 10A

H2S MONITOR

ppm

HIGH
LOW
FAULT

ALARM
RESET

detcon inc.

HOUSTON, TEXAS

detcon inc.

C

O

K

L

MODEL 10A

H2S MONITOR

ppm

HIGH
LOW
FAULT

ALARM
RESET

detcon inc.

HOUSTON, TEXAS

C

O

K

L

MODEL 10A

H2S MONITOR

ppm

HIGH
LOW
FAULT

ALARM
RESET

detcon inc.

HOUSTON, TEXAS

+

SENSOR

MANONCC

NO NCC

FAULT

NONCC

HIGH

LOW

+

4-20MA

ALARM

COIL

DC

POWER

+

4

3

2

1

COM

DISABLE

C

O

K

L

MODEL 10A

H2S MONITOR

ppm

HIGH
LOW
FAULT

ALARM
RESET

detcon inc.

HOUSTON, TEXAS

C

O

K

L

MODEL 10A

H2S MONITOR

ppm

HIGH
LOW
FAULT

ALARM
RESET

detcon inc.

HOUSTON, TEXAS

I/O

C

NC

4

NO

C

3

NC

NO

C

2

NC

NO

C

1

NC

NO

11..22 MM

UULLTTIIPPLLEEAALLAARRMMRREELLAAYYCCIIRRCCUUIITT

A multiple alarm relay circuit (figure 2) mounted on the controller mother board is provided with each
Detcon Model 610A-FB. The alarm circuit consists of 4 interposing relays (contacts are rated 8 amp @ 117
VAC / 5 amp @ 30 VDC) with 24VDC coils as standard. Other coil voltage ratings must be specified at time
of order. The alarm circuit can be configured to output Form C dry contacts (common, normally open and
normally closed), AC power or DC power. A 5 amp microfuse is provided for each relay and is configured in
series with the common pole of its respective relay. This configuration is functional regardless of whether
Form C dry contacts, AC power or DC power outputs are used.

An In/Out termination is provided for applying AC or DC power into any one of the interposing relays. A
gold plated jumper tab is used to apply the in/out power option to its corresponding relay, thus the 4 relays
may be used in a combination of Form C dry contacts and VDC outputs or Form C contacts and VAC out­puts.

The terminations labeled "Alarm Coil Power" located to the left of the alarm circuit are used only for coil
power. The "+" termination may be used to provide for various relay logic through the Form C dry contacts
of each individual Model 10A channel located on the controller mother board directly above the alarm cir­cuit card. The "-" termination should be wired into the common termination (shown by a common symbol)
located on the left of the alarm circuit board.

The terminations labeled "Alarm Power" located to the far left of the unit are used for providing power to
the In/Out termination on the alarm circuit card. As can be seen in the 610A-FB schematic / wiring diagram
(figure 3), the alarm power terminations for AC come directly from the AC input terminals located above on
the controller mother board. The same is true of the DC power terminations. Note: DC power used to drive
alarms must be obtained through a remote DC power source. The remote DC power source should be termi­nated to the terminals labeled "DC IN" located on the controller mother board. The "DC IN" terminations
function as both an alternative DC source used to power the 610A-FB as well as provide power for DC
alarms. The 610A-FB power supply is not capable of providing power for alarm devices.

Detcon Model 610A-FB Gas Detection System PG.4

COIL #4
COIL #3
COIL #2
COIL #1

COMMON

Figure 2 - Multiple Alarm Relay Circuit

I/O JUMPERS

#4 #3 #2 #1

5 AMP MICRO FUSE

#4

#3

#2

#1

IN / OUT
COM
N.C.
N.O.
COM
N.C.
N.O.
COM
N.C.
N.O.
COM
N.C.
N.O.

#4

#3

#2

#1

11..33 AA

LLAARRMMDDIISSAABBLLEE

The alarm disable switch, located on the front panel, operates by removing DC common from the "Alarm
Coil Power" terminals. Disabling of alarms does not inhibit any function of the Model 10A digital control
module. The digital display, alarm LED's and on board alarm relays remain active.

Detcon Model 610A-FB Gas Detection System PG.5

Figure 3 - Schematic/Wiring Diagram

+DC 16 GA. Red to TB2 Pin 5

–DC 16 GA. Black to TB2 Pin 4

POWER
SUPPLY

BRACKET

L1

COMMON

+IN

+OUT

DISABLE

16 GA.-BLK

16 GA.-BLK

16 GA.-RED

16 GA.-RED

16 GA.-BLK

DC IN

+

PS+
PS-

TB2

5

4

3

2

1

TB1

DC+

DC–

L1

L2

GND

L1 - 16 GA.Black to TB1 Pin 3

3

L2 - 16 GA.White to TB1 Pin 2

2

GND - 16 GA.Green TB1 Pin 1

1

POWER

SUPPLY

SWITCH PCB

ALARM

POWER

COMMON BUS

RESET BUS
+ POWER BUS

16 GA.-BLK

2 AMP

DISABLE

TYP. MODEL 10A CONTROLLER TERMINALS

GND

L2

PS L1

RESET

AC IN

+

MANCNOCNONCCNONCC

SENSOR

FAULTHIGHLOW

L1

L2

GND

COIL

POWER

+DC

COM

+DC

COM

+

4-20MA

L1

L2

GND

ALARM

POWER

11..44 RR

EEMMOOTTEERREESSEETT

A remote mounted normally open momentary switch may be used to reset all Model 10A controllers. The
reset function is effective when the Model 10A's respective alarms have been programmed in the latching
position and alarm conditions have passed. Each Model 10A controller has its own alarm reset switch which
is discussed further in section 2.0.

11..55 II

NNSSTTAALLLLAATTIIOONN

Step 1. Securely mount the 610A-FB enclosure (see figure 4).

Step 2. Connect 117 VAC input wiring to the lugless terminal strip (labeled AC IN) on the controller mother
board as detailed in figure 1. Line power current load is maximum 2 amps.

Step 3. Connect the 24 VDC standby battery to the lugless terminal strip (labeled DC IN) on the controller
mother board as detailed in figure 1. The DC current load is a maximum 3 amps.

Caution: Observe correct polarity when terminating all input / output field wiring. Failure to do so may
result in circuit damage on power up.

Step 4. If applicable, connect a normally open momentary remote mounted switch to the lugless terminal
strip (labeled RESET) located on the controller mother board as detailed in figure 1.

Detcon Model 610A-FB Gas Detection System PG.6

Figure 4 - Dimensions/Mounting Detail

.31" DIA. MOUNTING HOLE
.56" DIA. COUNTERBORE

17.25

14.75"

PADLOCKING
LATCH

DIMENSIONS WITH MOUNTING FOOT: WIDTH - SAME AS STANDARD;
HEIGHT - 18.75"
MOUNTING HOLE DIMENSIONS (CENTER TO CENTER):
VERTICLE - 17.25
HOROZONTAL - 10.5

10"

13.25"

9.65

Step 5. Refer to installation and wiring detail of remote mount sensor assemblies as detailed in section 3.0.
Terminate field wiring from sensors to Model 610A-FB lugless terminal strips located on the controller moth­er board as shown in figure 1.

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.

11..66 SS

TTAARRTT

--UU

PP

Upon completion of all field wiring: Depress the power switch on the controller assembly front panel. Note
that each Model 10A controller digital display illuminates. Varying readings may occur during sensor warm­up. A 10 second alarm delay will occur on power up. Refer to section 3.0 for additional sensor start-up detail.

11..77 PP

OOWWEERR

SS

UUPPPPLLYY

The 610A-FB is modularly designed so as to avoid unnecessary down time in the event of component failure.
In the event of a power supply failure, the power supply may be removed without disconnecting field wiring.
To remove and replace the power supply, follow the instructions below.

Note: Reference figure 3 for wiring locations and colors.

1. Remove the Model 10A control modules.

2. Remove the 4 screws from the front panel and expose the power supply.

3. Disconnect the 5 pin plug on the left of the power supply.

4. Disconnect the 2 pin plug on the right of the power supply.

5. Remove the 4 screws from the bracket that holds the power supply to the controller mother board.

6. Lift the power supply and front panel assembly out of the enclosure.

7. Remove the two screws that hold the power supply to the power supply bracket.

8. Use a screwdriver to remove the five wires that terminate to the power supply.

9. Reverse the above procedure with the new power supply (Detcon part number 3655-24

).

Note: Be sure to re-connect the wires properly (see figure 3). Failure to do so may result in damage during power up.

11..88 WW

AARRRRAANNTTYY

Detcon inc., as manufacturer, warrants under intended normal use each new Model 610A-FB control enclo­sure to be free from defects in material and workmanship for a period of one year from the date of shipment
to the original purchaser. All warranties and service policies are FOB the Detcon Inc. facility located in the
Woodlands, Texas.

11..99 SS

PPAARREEPPAARRTTSS

PART # DESCRIPTION
5026 Multiple alarm relay circuit
3655-24 3 amp, 24 vdc switcher power supply
0224 Gold plated jumper tab
2812 28 vdc lamp for power and disable switch
0295 5 amp micro fuse
0298 2 amp 3AG fuse
3218 Power switch
3218 Disable switch
2806 Green switch cap
2807 Red switch cap
3280 Fuse holder

Detcon Model 610A-FB Gas Detection System PG.7

Shipping Address: 3200 A-1 Research Forest Dr., The Woodlands, Texas 7381

Mailing Address: P.O. Box 8067, The Woodlands, Texas 77387-8067

phone [phone] • fax [phone] • www.detcon.com • [e-mail]