Detcon 610-N4X-SA User Manual

Model 610-N4X-SA

NEMA 4 X Control Enclosure

Model 610-N4X www.detcon.com

Detcon Inc.

Detcon Inc.

Gas Detection Control System

www.detcon.com

www.detcon.com

d e t co n I n c .

RESET/ACK

BUTTON

Houston Texas

Houston Texas

Operator’s Installation and Instruction Manual

Covers 3 and 5 relay, Stainless and Fiberglass Enclosures

DETCON, Inc.

3200 Research Forest Dr.,

The Woodlands, Texas 77387

Ph.281.367.4100 / Fax [phone]

www.detcon.com

July 15, 2005• Document #3001• Revision 0.1

This page left intentionally blank

Model 610-N4X-SA

610-N4X-SA Instruction Manual ii

Model 610-N4X-SA

Table of Contents

1.0 Introduction.............................................................................................................................................. 1

1.1 Description ........................................................................................................................................... 1

1.2 Specifications ....................................................................................................................................... 1

1.3 Relay Logic Description....................................................................................................................... 2

1.4 Front Panel Alarm Reset ...................................................................................................................... 2

2.0 Installation................................................................................................................................................ 3

2.1 Start Up ................................................................................................................................................ 6

3.0 Maintenance & Repair ............................................................................................................................ 6

4.0 Spare Parts List........................................................................................................................................ 8

5.0 Warranty .................................................................................................................................................. 8

Table of Figures

Figure 1 Mounting................................................................................................................................................ 3

Figure 2 Motherboard Schematic Wiring Diagram.............................................................................................. 4

Figure 3 Component Layout................................................................................................................................. 5

Figure 4 Alarm Wiring......................................................................................................................................... 5

Figure 5 Typical Dry Contact Connections.......................................................................................................... 6

Figure 6 Input Power Connections....................................................................................................................... 6

Figure 7 Backplane Configuration Jumpers......................................................................................................... 7

610-N4X-SA Instruction Manual iii

Model 610-N4X-SA

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Shipping Address: 3200 A-1 Research Forest Dr., The Woodlands Texas 77381

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

Phone: [phone] • Fax: [phone] •

610-N4X-SA Instruction Manual iv

www.detcon.com • [e-mail]

Model 610-N4X-SA

1.0 Introduction

Detcon Model 610-N4X-SA Gas Detection System consists of 3 major assemblies:

1. The 610-N4X-SA Fiberglass or Stainless Steel control enclosure.

2. The Model 10 single channel digital control modules.

3. The remote mount gas sensor assemblies.

The NEMA 4X control enclosure is detailed in this manual, the Model 10 digital control modules are detailed
in the Detcon Model 10 Operators Installation and Instruction Manual, and applicable sensor assemblies in
their corresponding Operators Installation and Instruction Manual.

1.1 Description

Detcon Model 610-N4X-SA control enclosure, along with Model 10 digital control modules, is designed to
serve as a host assembly for up to six remote mount gas detection sensor assemblies. The control enclosure is
rated NEMA 4X, which is by definition rain tight and therefore suitable for outdoor location in electrically
non-hazardous environments. The single channel modular design supports application flexibility wherein one
or two gas detection systems are configured dependent on the three or five alarm relay model. All control
modules are plug-in front panel accessible for easy maintenance and repair. The system is powered by
120VAC unless otherwise specified at the time of order.

Discrete output terminal strips located on the controller motherboard are provided for sensor terminations. The
4-20 mA outputs for remote recording devices and an RS-485 serial ModBus™ output are located on the
motherboard. The VDC power in, and remote alarm reset terminations are also provided on the Motherboard.
Din Rail mounted terminal block outputs are provided for two or four alarm and one fault relays.
Terminations for AC power-in are also provided on a Din Rail.

All Relays on the Model 10 digital control modules are configured as Latched, Normally Energized in No­Alarm/No-Fault condition. These relays control the state of the Alarm Relays mounted on the motherboard.
Each Alarm Relay is a DPDT relay with one set of contacts for annunciator power and one set of dry contacts
for customer use. Three – 5Amp Fuse Blocks are provided for each alarm, providing the ability to connect up
to three annunciators for each alarm condition (including Fault).

1.2 Specifications

Electrical Classification

NEMA 4X

Dimensions

24''W x 24''H x 10 1/2''D

Capacity

6 single channels

Power Input

220VAC/117VAC/24VDC

Power Consumption

<5 watts per channel (includes gas sensor and control modules. Does not include annunciators.)

Outputs

Discrete Analog 4-20 mA DC
Serial RS-485 Modbus™
Discrete or zoned alarm relays (Alarm 2 Timer(s))

Discrete alarm relays K1, K3 (and if applicable K4)

Resistive load: 7.5A, 240 VAC; 10A, 30 VDC

610-N4X-SA Instruction Manual Rev. 0.1 Page 1 of 8

Model 610-N4X-SA

Inductive load: 5A, 240 VAC; 7.5A, 30 VDC
Max. operating current: 10A

Time delay relays K2 (and if applicable K5)

Resistive load: 10A, 240 VAC; 10A, 30 VDC
Inductive load: 7A, 240 VAC; 7.5A, 30 VDC
Max. operating current: 10A

Operating Temperature Range

-40°C to +175°C

Battery Backup (If applicable)

2ea. 12V 2.9Ah batteries in series; ½ hour minimum operating time

Warranty

One year

1.3 Relay Logic Description

Relay Assignments

The 610-N4X-SA comes with 3 or 5 Alarm Relays for use with one or two gases respectively. One or two of
these relays are timer relays (Dependent on one or two gas). (Refer to Figure 3) In this typical system the
Relays are:

K1 – Alarm 1 – H2S Low Relay
K2 – Alarm 2 – H2S High Time delay relay
K3 – Fault relay (Common Fault for three and five relay systems)
K4 – Alarm 1 – LEL Low Relay (If applicable)
K5 – Alarm 2 – LEL High Time delay Relay (If Applicable)

Alarm 1 – H2S/LEL Low

During Alarm 1 conditions, the Normally Energized coil(s) on the control modules will de-energize. This will
energize Alarm 1 Relay, K1 (or K4 if applicable), applying power to annunciators attached to alarm 1 (H2S or
LEL Low). Alarm 1 conditions can be Acknowledged and Reset via the RESET/ACK Switch on the front
panel of the unit.

Alarm 2 – H2S/LEL High

During Alarm 2 conditions the Normally Energized coil(s) on the control modules will de-energize. This will
energize the Alarm 2 Relay K2 (or K5 if applicable) applying power to annunciators attached to alarm 2 (H2S
or LEL High). The time delay relay controlling the annunciators will energize for a number of minutes
determined by the setting of the relay, and will then release. Alarm 2 conditions can be Acknowledged and
Reset via the RESET/ACK Switch on the front panel of the unit.

Fault Alarm

During Fault conditions, when any controller goes into fault, or upon loss of power, the Normally Energized
coil(s) on the control modules will de-energize. This will de-energize the Fault Relay K3, applying power to
the annunciators attached to the Fault relay.

1.4 Front Panel Alarm Reset

A Front Panel mounted, normally open, momentary switch is used to reset the alarms of all Model 10
controllers. The reset function is effective when the Model 10’s respective alarms have been programmed in

610-N4X-SA Instruction Manual Rev. 0.1 Page 2 of 8

Model 610-N4X-SA

the latching position and alarm conditions have passed. Each Model 10 controller also has its own discrete
alarm reset switch, which is discussed further in the Model 10 Instruction Manual.

2.0 Installation

1. Securely mount the 610-N4X-SA Enclosure in accordance with figure 1. Stainless Steel version
mounting footprint is the same as that shown.

25.59in [649.94mm]

22.75in [577.85mm]

Model 610-N4X www.detcon.com

Detcon Inc.

Detcon Inc.

Gas Detection Control System

www.detcon.com

www.detcon.com

d et c o n I n c .

MODEL 10

MODEL 10

MODEL 10

MODEL 10

MODEL 10

MODEL 10

ALM 2

ALM2

ALM 2

ALM 2

ALM2

ALM 2

ALM 1

ALM1

ALM 1

ALM 1

ALM1

ALM 1

FAULT

FAULT

FAULT

FAULT

FAULT

FAULT

ALARM

ALARM

ALARM

ALARM

RESET

RESET

RESET

RESET

TEST

TEST

TEST

TEST

TEST

TEST

RESET/ACK

BUTTON

MODEL 10MODEL 10MODEL 10MODEL 10MODEL 10MODEL 10

ALM2

ALM 2

ALM 2

ALM2

ALM 2

ALM 2

ALM1

ALM 1

ALM 1

ALM1

ALM 1

ALM 1

FAULT

FAULT

FAULT

FAULT

FAULT

FAULT

ALARM

ALARM

ALARM

ALARM

ALARM
RESET

RESET

ALARM

ALARM

ALARM

RESET

RESET

RESET

RESET

RESET

RESET

TEST

TEST

TEST

TEST

TEST

TEST

Reset/Ack Push Button

Houston Texas

Houston Texas

Mounting Holes R0.28in [R7.14mm]

26.8in [681.99mm]

10.4in [263.91mm]

27.8in [707.39mm]

Figure 1 Mounting

2. Refer to installation and wiring detail of remote mount sensor assemblies as detailed in the Sensor
Instruction Manual. Terminate field wiring from sensors on the 610-N4X-SA motherboard. Terminals
are labeled “Sensor” (mA, + and –, Figure 2).

3. If applicable, terminate the discrete 4-20 mA outputs to external device(s). Terminals are labeled “4­20 Out” (+ and –, Figure 2).

4. If applicable, terminate the RS-485 serial output to external device(s). Terminals are labeled “RS­485” (A+, B–, and Shield, Figure 2). If applicable, terminate RS-485 Shield to Earth Ground via the
jumper tab located to the left of the RS-485 terminals. Place the jumper on the bottom 2 contacts to tie
RS-485 shield to Earth Ground or place the jumper tab on the top two terminals for storage.

5. There are three fused 5Amp 120VAC outputs for every Alarm Relay and the Fault Relay. These Fuse
Block Terminals are located near the bottom center of the enclosure (Figure 3 and Figure 4). To the
left of the Fuse Blocks are as many Thru-blocks tied to Neutral. Based on the application and use of
relay contact outputs, all annunciators should be connected to these output terminals. All wiring

610-N4X-SA Instruction Manual Rev. 0.1 Page 3 of 8

Model 610-N4X-SA

terminations should be completed prior to application of power. Shut-in controls may be omitted until
system test is complete.

PS VAC

RED +

BLK -

L1-BLK
N-WHT
GND-GRN

A(+)

B(-)

Alarm 2

Alarm 1

Fault

VDC-

+

-

L1

GND

Shld

+

VDCVAC

-

L1

GND

+

-

VDC

N

CH1

CH2-CH6
P12-P16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

+

-

mA

NC

NO

COM

NC

NO

COM

NO

NC

COM

+

Out

-

CH1
P11

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Typical

Jumpers

Typ. x 6

Sensor

N

ALM2

ALM1

FAULT

4-20mA

Figure 2 Motherboard Schematic Wiring Diagram

610-N4X-SA Instruction Manual Rev. 0.1 Page 4 of 8

Battery
Backup

Model 610-N4X-SA

610 - Mother Board

BRKR

+

P1

-

+

P2

­PS DC

MODEL 10

ALM 2
ALM 1
FAULT

TEST

A1

PS VAC
L1
N

P3

GND

MODEL 10

MODEL 10

MODEL 10

MODEL 10

MODEL 10

ALM 2

ALM 2

ALM 2

ALM 2

ALM 1

ALM 1

FAULT

FAULT

ALARM

ALARM

ALARM

RESET

RESET

RESET

TEST

TEST

ALM 2

ALM 1

ALM 1

ALM 1

FAULT

FAULT

FAULT

ALARM

ALARM

ALARM

RESET

RESET

RESET

TEST

TEST

TEST

TB3

Cut-Off

TB2

Low Voltage

123

4

TB1

AC INPUT ALARM OUTPUTS

123 4 567891011121314

ALM RESET

VDC IN

+

-

VAC IN
L1
N

GND

RS-485

A(+)
B(-)
Shld

ALM POWER

+

-

L1
N

GND

ALM COIL

+

-

COMMON ALARMS
ALM2
ALM1
FAULT
VDC-

P4

P5

P7

P7

P8

P9

P10

CH1+CH2 CH3 CH5CH4 CH6

­mA

SENSORALM2

NC
NO
C
NC
NO
C

ALM 1

NC
NO
C
+

OUT

-

4-20 FAULT

27

K1 K2 K3

86543127865431

ALARM RELAYS K1 - K5

789101617181920

5

6

1112131415

21

23

22

24

2526272829

H2S LOW H2S HIGH FAULT LEL LOW LEL HIGH

Figure 3 Component Layout

TB1 - 3 Relay Unit

15 16 17 18 19 20 21 22 23

C

EN

S

27

27

27

S

T

PU

N

I

R

SO

A

m

2

0

-

4

:

-

6

1

H

K5K4

865431

30

865431

865431

32

333435

363738454647484950

3940414243

44

DRY CONTACTS

424344

4645484749

50

AC INPUT ALARM OUTPUTS

321

4

AC INPUT

Neutral

Rtn

8

657

Neutral

Rtn

19

131211109

1514181716

20

H2S LOW H2S HIGH FAULT

21

23

22

26

24

25

H2S LOW

ALARM OUTPUTS

FAULT

H2S LOW

H2S HIGH

DRY CONTACTS

30

29

27

28

333235

34

LEL LOWH2S HIGH FAULT

LEL HIGH

36

43

40

393837

FAULT

H2S LOW

H2S HIGH

50

444142

494748

45

46

LEL LOW

LEL HIGH

DRY CONTACTS

TB1 - 5 Relay Unit

Figure 4 Alarm Wiring

610-N4X-SA Instruction Manual Rev. 0.1 Page 5 of 8

Model 610-N4X-SA

6. Each alarm has an associated set of dry contacts from the Alarm/Fault relay’s (Figure 3 and Figure 5).
These dry contact terminals consist of a Common relay connection through a terminal disconnect, and
the NC and NO Contacts via through terminals (Figure 4).

24

COM - Common
NC - Normally Closed
NO - Normally Open

25 26

COM

NC

Disconnect Terminal Block

Through Terminal Block

NO

Figure 5 Typical Dry Contact Connections

7. If applicable, connect a 24VDC source or standby battery to the terminal strip labeled “VDC IN” (+
and –) on the Motherboard (Figure 2).

8. Connect 117VAC input to the Circuit Breaker labeled “VAC IN” in the lower left of the enclosure
(Figure 3 and L1, N, EARTH in Figure 6). If applicable, connect 220VAC. The power supply will
accept both voltages.

9. Connect Earth Ground to Terminal TB1-1, and Neutral to terminal TB1-5 (Figure 6).

20Amp

Brkr

78956

Neutral / N

Ground / Earth

123

4

ON

VAC Input / L1

Figure 6 Input Power Connections

2.1 Start Up

Upon completion of all field wiring: Apply power to the 610-N4X-SA by turning the 20Amp Circuit Breaker
ON. Note that each Model 10 controller digital display illuminates. Note; varying readings may occur during
sensor warm-up. A 10 second alarm delay will occur on power up. Refer to the applicable Sensor Instruction
Manual for additional sensor start-up details.

3.0 Maintenance & Repair

The Detcon Model 610-N4X-SA’s modular design allows for minimum ‘down-time’ during maintenance
and/or repair.

610-N4X-SA Instruction Manual Rev. 0.1 Page 6 of 8

Model 610-N4X-SA

Adding/Removing Control Modules

When adding or removing Control Modules it is imperative that the backplane jumpers are correctly removed
or added to insure proper operation of the fault alarm circuitry (see Figure 7). When removing a Control
Module, the jumpers for Fault (JPx-G, H, and I) directly to the left of the module being removed, must be
installed to allow proper signal flow and fault operation. When a Control Module is being added to the
configuration, the jumpers (JPx-G, H, and I) directly to the left of the module being installed, must be removed
to insure that the signal does not bypass the new module. Incorrect placement of jumpers will cause the fault
alarm circuit to operate incorrectly.

CH4CH3 CH5 CH6

Jumpers removed for

Control Modules 7 and 8.

A
B
C
D
E
F

G

H

I

JP6

1
2
3
4
5
6
7
9
9
10
11
12
13
14

A
B
C
D
E
F

G

H

I

JP7

1
2
3
4
5
6
7
9
9
10
11
12
13
14

A
B
C
D
E
F

G

H

I

JP8

1
2
3
4
5
6
7
9
9
10
11
12
13
14

A
B
C
D
E
F

G

H

I

JP9

1
2
3
4
5
6
7
9
9
10
11
12
13
14

Jumpers installed for Control
Modules not installed in unit.

FAULT Output to Fault Relay

Fault Jumper positions
G, H, and I.

Figure 7 Backplane Configuration Jumpers

Model 10 Control Modules

A Model 10 control module may be changed by simply loosening its mounting screw and sliding the module
out of its card cage. See the Model 10 Instruction Manual for more information on the Model 10 controller.

Circuit Breaker/Power Switch

If the circuit breaker should trip due to a high current or over voltage, the circuit breaker can be reset by
cycling the breaker ‘OFF’ and back ‘ON’. If the breaker trips again, a problem has occurred that will need to
be alleviated before power can be restored.

Replacement of the circuit breaker is accomplished by disconnecting power from the unit, disconnecting the
wires going to the breaker, and removing the breaker from the Din-Rail. Replace the breaker and reconnect
the wires to the new breaker.

Power Supply

Replacement of the power supply is accomplished by, removing the 10 screws that secure the 610-N4X-SA
face plate, disconnect the two power supply plugs from their respective headers, remove the three screws
holding the power supply bracket to the Motherboard. Remove the four screws that hold the power supply
bracket to the power supply; disconnect the wires from the power supply and reassembly with the new power
supply. Reference Figure 6 for wiring details.

610-N4X-SA Instruction Manual Rev. 0.1 Page 7 of 8

Model 610-N4X-SA

4.0 Spare Parts List

Part # Description
363-752400-000 110 watt, 24 VDC switcher power supply
0224 Gold plated jumper tab
305-300410-000 Din-Rail Mounted Fused Terminal
0302 5Amp 3AG Slow-Blo Fuse
3309 DPDT 8 Pin Octal 10A Relay
330-901100-024 DPDT Hermetically Sealed 8 Pin Octal 10A Relay
330-794500-124 DPDT 8 Pin Octal Timer Relay
226-910120 20 Amp Circuit Breaker
500-505000-000 Low Voltage Cut-off PCB (If applicable)
3423-2 12V 2.9Ah Battery (If applicable)

5.0 Warranty

Detcon Inc., as manufacturer, warrants under intended normal use each new Model 610-N4X-SA NEMA 4X
control enclosure to be free from defects in material and workmanship for a period of one year. The warranty
period begins from the date of shipment to the original purchaser and ends one year thereafter. All warranties
and service policies are FOB the Detcon Inc. facility located in The Woodlands, Texas.

610-N4X-SA Instruction Manual Rev. 0.1 Page 8 of 8