Instruction Manual

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detcon inc.

Detcon

Model 1212B

Rack Mount Control Enclosure

Operator’s Installation & Instruction Manual

April 1, 1999 Document #2078 Ver. 1.2

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

ALARM 3

ALARM 2

ALARM 1

FAULT

ALARM

RESET/

Tes t

HOUSTON, TEXAS

detcon inc

able

disable

ALARM

MODEL 12B

HYDROGEN

SULFIDE

MONITOR

ppm H

odel

1212B

HOUSTON, TEXAS

detcon inc.

Summary of content (5 pages)

PAGE 1
Detcon detcon inc.
PAGE 2
Table of Contents 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Introduction Description Specifications Schematic Installation Start-up Spare Parts List Warranty 1.0 INTRODUCTION Detcon Model 1212B consists of 3 major assemblies: 1. The NEMA 1 rack mount control enclosure. 2. The single channel digital control modules. 3. The remote mount gas sensor assemblies. The NEMA 1 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. 1.
PAGE 3
Alarm Relays (discrete or zoned) Contacts include common with jumper selectable choice (on controller) of normally-open or normally-closed for four alarms Resistive load: 5A, 250 VAC; 5A, 30 VDC Inductive load: 2A, 250 VAC; 2A, 30 VDC Max. operating current: 5A Operating Temperature Range -40°F to +175°F Warranty One year 1.3 SCHEMATIC Typ.
PAGE 4
1.4 INSTALLATION 1. Securely mount the 1212B enclosure in accordance with the drawing in figure 1. Note: Reference figure 2 for wiring terminations. Figure 1 Panel cutout (centered) 17.5 x 6.65 Panel depth - 8.75 7 .375 3 .218 Slot Detail use 10-32 screw 19 2. Connect 24VDC input to the terminal strip labeled “VDC IN” (+ and —). 3. Refer to installation and wiring detail of remote mount sensor assemblies as detailed in section 3.0. Terminate field wiring from sensors to the 1212B motherboard.
PAGE 5
Figure 2 Zone Programming Jumpers VDC IN RS-485 Com NO/NC Com NO/NC Com NO/NC Com NO/NC CH1 CH11 4-20mA Sensor Out Alarm Reset Fault Alm 1 Alm 2 Alm 3 CH12 A (+) B (–) Shld mA 1.5 START UP Upon completion of all field wiring apply 24VDC power. Note that each Model 12B controller’s 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. 1.