NetSafety UNI-TROL Rack-Mount-Gas Controller Owner's manual

Brand: NetSafety

Model: UNI-TROL Rack-Mount-Gas Controller

Type: Owner's manual

ISO

9001

Certified Company

MODELS: R1G, R2G and R4G

UNI-TROL

GAS CONTROLLER

One, Two and Four-Channel Rack-Mount Controller

Part Number: MAN-0004 Rev. 1

Printed in Canada

This manual is provided for informational purposes only. Although the information contained in this

manual is believed to be accurate, it could include technical inaccuracies or typographical errors.

Changes are, therefore, periodically made to the information within this document and incorporated

without notice into subsequent revisions of the manual. Net Safety Monitoring Inc. assumes no

responsibility for any errors that may be contained within this manual.

This manual is a guide for the use of a Gas controller and the data and procedures contained within

this document have been verified and are believed to be adequate for the intended use of the

controller. If the controller or procedures are used for purposes other than as described in the manual

without receiving prior confirmation of validity or suitability, Net Safety Monitoring Inc. does not

guarantee the results and assumes no obligation or liability.

No part of this manual may be copied, disseminated or distributed without the express written consent

of Net Safety Monitoring Inc.

Net Safety Monitoring Inc. products, are carefully designed and manufactured from high quality

components and can be expected to provide many years of trouble free service. Each product is

thoroughly tested, inspected and calibrated prior to shipment. Failures can occur which are beyond

the control of the manufacturer. Failures can be minimized by adhering to the operating and

maintenance instructions herein. Where the absolute greatest of reliability is required, redundancy

should be designed into the system.

Net Safety Monitoring Inc. , warrants its sensors and detectors against defective parts and

workmanship for a period of 24 months from date of purchase and other electronic assemblies for 36

months from date of purchase.

No other warranties or liability, expressed or implied, will be honored by Net Safety Monitoring Inc.

Contact Net Safety Monitoring Inc. or an authorized distributor for details.

Table of Contents

Unit I

GENERAL INFORMATION

DESCRIPTION................................................................ 1

FEATURES .................................................................. 1

SPECIFICATIONS ............................................................. 1

Figure 3 - Controller Face-Plate ................................... 2

Figure 1 - Controller Dimensions............................................ 2

BASIC OPERATION ........................................................... 2

FACEPLATE DESCRIPTION .............................................. 2

OUTPUTS ............................................................. 3

Figure 3 - Jumper Selections for an Isolated or Non-isolated Current Output ......... 3

PROGRAMMING OPTIONS ............................................... 4

EXTERNAL RESET ..................................................... 5

AUTOMATIC DIAGNOSTICS AND FAULT IDENTIFICATION..................... 5

OPERATING MODES .................................................... 5

Unit II

SYSTEM INSTALLATION

INSTALLATION ............................................................... 7

SENSOR LOCATIONS ................................................... 7

GENERAL WIRING REQUIREMENTS....................................... 8

CONTROLLER WIRING .................................................. 8

DIP SWITCH SETTINGS ....................................................... 15

Figure 7a - Relay and Dip Switch Positions .................................. 15

ACTIVE CHANNELS.................................................... 15

CALIBRATION GAS CONCENTRATION .................................... 16

POWER-UP TIME DELAY .......................................... 17

ALARM SETTINGS ..................................................... 18

LATCHING/NON-LATCHING SELECTION .................................. 19

ENERGIZED/DE-ENERGIZED SELECTION ................................. 19

RELAY SETTINGS............................................................ 20

Figure 7c - Relay Settings ................................................ 20

INSTALLATION CHECKLIST.................................................... 20

Unit III

SYSTEM OPERATION

MENU AND FUNCTION SELECTION ............................................. 22

START-UP PROCEDURE ...................................................... 23

MAIN MENU SELECTIONS ..................................................... 24

ERROR CHECK MODE (Err Chc) ......................................... 24

SET-POINT DISPLAY MODE (SPd) ........................................ 25

SENSOR CALIBRATION (CAL) ........................................... 26

SENSOR REPLACEMENT MODE (SrP) .................................... 28

SPECIAL FUNCTION MENU SELECTIONS ........................................ 28

FORCED CURRENT OUTPUTS (FoP) ..................................... 28

CURRENT CALIBRATION MODE (CuC) .................................... 29

ADDRESS SET MODE (Adr Set) (OPTIONAL) ............................... 29

CHANNEL DISPLAY(Chd) ............................................... 29

BYPASS (bPS) ........................................................ 29

OPERATING MODES ......................................................... 30

RESET MODE ......................................................... 30

FORCED RESET MODE ................................................ 30

NORMAL OPERATING MODE ............................................ 30

FORCED DISPLAY (FdP) ................................................ 31

Unit IV

SYSTEM MAINTENANCE

ROUTINE MAINTENANCE ..................................................... 31

MANUAL CHECK OF OUTPUT DEVICES .................................. 31

SYSTEM CHECK IN NORMAL MODE ..................................... 31

SENSOR REPLACEMENT .............................................. 32

TROUBLESHOOTING ........................................................ 32

Appendix B

Record Of Dip Switch Settings ............................................ 35

Wire Resistance In Ohms................................................ 36

SENSOR REPLACEMENT MODE (SrP) ......................................... 28

SPECIAL FUNCTION MENU SELECTIONS ............................................. 29

FORCED CURRENT OUTPUTS (FoP) ........................................... 29

CURRENT CALIBRATION MODE (CuC) ........................................ 29

ADDRESS SET MODE (Adr Set) (OPTIONAL) .................................... 29

CHANNEL DISPLAY (Chd) ................................................... 29

BYPASS (Bps) .............................................................. 30

OPERATING MODES ............................................................... 30

RESET MODE .............................................................. 30

FORCED RESET MODE ...................................................... 31

NORMAL OPERATING MODE ................................................ 31

FORCED DISPLAY (FdP) ..................................................... 31

UNIT IV - SYSTEM MAINTENANCE

ROUTINE MAINTENANCE .......................................................... 32

MANUAL CHECK OF OUTPUT DEVICES ....................................... 32

SYSTEM CHECK IN NORMAL MODE .......................................... 32

SENSOR REPLACEMENT .................................................... 32

TROUBLESHOOTING ............................................................... 33

DEVICE REPAIR AND RETURN ...................................................... 33

Table 9 - Troubleshooting Guide ................................................. 34

Appendix A .......................................................................... i

Appendix B ......................................................................... ii

Appendix C .........................................................................iii

- 1 -

Unit I

GENERAL INFORMATION

DESCRIPTION

The Uni-Trol R1G, R2G and R4G Controllers accept 4-20 mA DC analog input signals from Net Safety

Combustible and toxic gas sensors. Controller response includes actuation of relays for direct control of

field response devices, 4-20mA outputs and a full array of faceplate indicators. The type of controller and

its range can be determined from the model number as shown below:

RXG-100-LEL = 0 to 100% LEL controller

RXG-100-H2S = 0 to 100ppm H

S controller

RXG-1000-CO = 0 to 1000ppm CO controller

RXG-20-SO2 = 0 to 20ppm SO

controller

NOTE

The controller displays the gas concentration in parts per million (p.m.) for all types of gases

unless it is a combustible gas controller which shows the gas concentration as % of lower

explosive limit (LEL).

FEATURES

< Controller accepts 4 to 20 mA analog inputs from Net Safety Combustible and toxic gas sensors.

< Two digital displays, one bar graph display, and high intensity LEDs indicate important system

status.

< AutoCal feature provides easy and accurate calibration.

< Microprocessor-based controller is easily field programmable.

< 4-20mA current outputs to send important system information to other devices.

< Relay alarm and fault outputs.

SPECIFICATIONS

< Operating Voltage:

24 Volts DC. Device can operate between 18 and 32 Volts DC

< Power Consumption (Controller only):

2.4 Watts nominal, 4.4 Watts maximum (100 mA nominal, 180 mA maximum at 24 Volts

DC)

Maximum start-up current is 1.5 Amperes for 10 milliseconds. Power supplies with

foldback current limiting are not recommended

< Maximum Ripple:

Ripple should not exceed 5 Volts peak-to-peak. The sum of DC plus ripple must be

$18

Volts DC and

#32 Volts DC

< Temperature Range:

Operating: -40ºC to +85ºC (-40ºF to +185ºF)

Storage: -55ºC to +150ºC (-65ºF to +302ºF)

< Relay Contacts:

Normally open/normally closed contacts rated at 5 Amperes at 30 Volts DC/250 Volts

- 2 -

Figure 3 - Controller

Face-Plate

< Current Outputs:

Two 4-20mA DC current, with a maximum external loop resistance of 600

S at 18-32

Volts DC

< Dimensions:

Refer to Figure 1

< Shipping Weight (approximate):

2 lbs. (0.9 kilograms).

< Certification:

Designed to meet CSA and FM specifications for ordinary locations.

Figure 1 - Controller Dimensions

BASIC OPERATION

FACEPLATE DESCRIPTION

The controller faceplate provides LEDs for identifying status conditions, two

digital displays and a bar graph display for indicating the sensor inputs, and

MENU/SET and SELECT/RESET push-buttons for programming, calibrating

and resetting the system. Refer to Figure 2 for the location of indicators and

push-buttons.

< Digital Displays - Two digital displays are used to display the sensor

inputs in both the Normal and Calibrate Modes; one display indicates

the channel and one display indicates the corresponding sensor input.

In the event of a fault, it identifies the nature of the fault using an

alphanumeric code. In the Normal Operating Mode, each channel is

sequentially displayed for 5 seconds. In other operating modes, the

digital displays show the alarm set-points, programmed calibration gas

concentration, or the communication addresses for the Digital

Communication. A negative zero drift condition is indicated by a

minus sign in the left-hand digit. Since at least one display is always

lit, it also functions as a power indicator.

- 3 -

< Bar Graph Display - The common 10-segment bar graph display provides readings of the four

sensor inputs in 5% of full range increments (ie. for a 50ppm controller each segment represents

2.5ppm, which is 5% of the full range of 50ppm), from 0% to 50% of full range; all 10 segments

are illuminated for 50% of full range and higher gas concentrations.

< High Alarm LED (HI) - Flashes in response to a sensor signal that exceeds the high set-point.

< Low Alarm LED (LOW) - Flashes in response to a sensor signal that exceeds the low set-point.

< Calibrate LED (CAL) - is illuminated while the controller is in the Calibrate Mode.

< Fault LED (Fault) - is illuminated upon detection of an overall system fault or a channel related

fault.

< Channel LEDs - are illuminated when status on the corresponding channel is displayed on the

common indicators (digital displays and bar graph). During power-up, a channel LED is on if the

channel is selected for operation.

< MENU/SET Push-Button - is used for changing the menu display as well as other system

programming and calibration functions.

< SELECT/RESET Push-Button - is used for menu selection and other system programming, as

well as for resetting the controller.

OUTPUTS

Relay Outputs:

The relay outputs have SPDT contacts rated at 5 Amperes at 30 Volts DC or 250 Volts AC. The four relays

include an Area 1 low alarm (channels 1 and 2), an Area 2 low alarm (channels 3 and 4), one common high

alarm, and a fault alarm.

RECOMMENDATION

The fault relay output should not be used to activate an automatic shutdown procedure. The fault

output indicates a potential problem with the controller, not an alarm condition.

Current Outputs:

Two 4-20mA DC current outputs for transmitting system information to other devices are also included.

The current outputs can be wired for isolated or non-isolated operation by changing the positions of J12 and

J18, as shown in Figure 3. Refer to Table 1 for a description of the current output signal levels.

- 4 -

Figure 3 - Jumper Selections for an Isolated or Non-isolated

Current Output

Current Output Situation

0mA Open or shorted signal output, or loss of power

1mA Fault or Power up

2mA Power Fault

3mA Sensor Calibration

4mA to 20mA 0 to 100% of full scale

Table 1 - Current Outputs

PROGRAMMING OPTIONS

A set of dip-switches, located on the circuit board, can be used to ‘program’ various options and set-points,

including:

< the channels selected for operation,

< low and high alarm settings,

< calibration gas concentration,

< power-up delay time (either 45 or 90 seconds),

< latching/non-latching selection, and

< energized/de-energized selection

The alarm outputs are programmable for either normally energized or normally de-energized operation

(programmable as a group only, not individually). The fault output is normally energized. The low alarm

outputs are programmable for either latching or non-latching operation. The high alarm output is always

latching and the fault output is non-latching. Refer to Table 2.

OUTPUT

Selectable Normally

Open/Closed

Selectable Normally

Energized/De-Energized

Selectable Latching/Non-

latching

LOW

HIGH Y Y

FAULT Y N

Table 2 - Selectable Output Options

Low alarms are programmed together, not individually

Programmable together, not individually

High alarm relay is always latching

Fault relay is normally energized

Fault relay is non-latching

- 5 -

EXTERNAL RESET

A normally open, momentary closure switch can be connected between the external reset terminal and the

negative power terminal to provide remote reset capabilities.

AUTOMATIC DIAGNOSTICS AND FAULT IDENTIFICATION

The microprocessor-based controller features self-testing circuitry that continuously checks for problems

that could prevent proper system response. When power is applied, the microprocessor automatically tests

memory. In the Normal Operating Mode, it continuously monitors the input signals from the

sensor/transmitter to ensure proper functioning. In addition, a ‘watchdog’ timer is maintained to ensure that

the program is running correctly. The timer resets the micro-controller if it enters erroneous processor

states within a reasonable period of time.

If a fault is detected, the Fault LED illuminates, the digital display identifies that a fault has occurred, the

fault relay output becomes de-energized, and the current output drops to 1 mA. The nature of the fault can

be identified by a numeric code, which can be viewed in the Fault Message Display mode.

OPERATING MODES

The controller can operate in any of the modes discussed in this section. Operating modes other than

Normal are selected by pressing the appropriate MENU/SET and SELECT/RESET buttons located on the

controller front panel. Refer to Figure 2 for a diagram of the controller front panel.

NOTE

This section is intended to acquaint the user with the basic operation of the controller. Refer to

‘Unit III’ for detailed instructions and description.

Normal Operating Mode:

If no alarms or faults are occurring, the module will be in a Level 1 Display Mode; the bar graph and digital

display sequentially indicate the sensor inputs for 5 seconds on each channel, and all the LEDs are off

except the appropriate channel LEDs. Relay outputs are in their normal state, and the current outputs

correspond to the sensor inputs.

If a low alarm condition occurs on any channel, the module will be in a Level 2 Display Mode; the bar

graph and digital display will display only the channel that is in alarm. If more than one channel is in

alarm, the channel with the highest alarm will be displayed and the channel LED for any other channel(s) in

alarm will flash. The low alarm LED will flash, the low alarm relay(s) change state, and the current outputs

change to indicate the alarm. If the signal(s) decreases below the low set-point again, the corresponding

alarm relays return to their normal state if programmed for non-latching operation and remain unchanged if

programmed for latching operation. The current outputs will return to the normal output level. The low

alarm LED will still illuminate whenever the channel which had the alarm condition is displayed.

If a high alarm condition occurs, the module will be in a Level 3 Display Mode; the bar graph and digital

display will cycle through all channels with a high alarm condition. While one channel is displayed, the

channel LED for any other channel in a high or low alarm state will flash.

NOTE

When 1 or more channels are in a high alarm condition and 1 or more channels are in a low

alarm condition, only the channels in the high alarm condition will be cycled on the display. The

channel LED for any channel in the low alarm condition will flash.

- 6 -

Reset Mode:

The Reset Function is entered by pressing the SELECT/RESET button located on the front panel of the

controller. (Refer to Figure 2) When the SELECT/RESET button is activated momentarily, all LEDs turn

off and all outputs return to their normal condition if no alarms or faults are occurring (basic reset).

Forced Reset Mode:

If any of the channels receives a reading beyond 100% of full scale, a reset will not clear the alarms, even if

the channel has returned to levels below the low alarm set point. The error resulting from this occurrence

must be cleared and a forced reset applied. To apply a forced reset, press the SELECT/RESET button for 3

second, the LEDs turn off and the outputs return to their normal condition. The remote reset performs a

forced reset.

NOTE

The remote reset performs a reset function only. It cannot be used for other controller functions.

Forced Display (FdP):

This mode forces a sequential display of all the active channels. It can be used during alarm situations

when the digital and bar graph display normally remain on the

channel with the highest alarm condition. This function is also useful while in menu functions that do not

show the sensor readings.

Sensor Replacement Mode (SrP):

This mode inhibits all controller outputs to allow replacement of the sensor(s) without removing power

from the controller. Alarm set-points and calibration gas concentration are not affected. The upper display

will show ‘SrP’ while in the sensor replace mode. The lower display will show the status of the sensor

being replaced (‘NoS’ means no sensor is connected). The fault LED is on and the fault relay is de-

energized. The channel LED will be on for the sensor being replaced.

All other sensors remain active during sensor replace mode. If an alarm condition occurs on one of the

active channels while in this mode, the appropriate channel LED will flash and relays and current outputs

will act accordingly. All other display features will be inhibited. In order to exit this mode the

SELECT/RESET button must be pressed. The controller will perform a power-up countdown (45 or 90

seconds) for the sensor that was replaced and the affected current output will be 1mA during this time.

Sensor Calibration Mode (CAL):

The Uni-Trol

™

Controller uses a fully automatic calibration procedure that requires no adjustments by the

operator. The controller displays ‘Air’ on the upper display and the channel status on the lower display

while automatically performing the zero adjustments. Next the controller will signal the user to apply the

calibration gas by alternating ‘gas’ and ‘in’ on the upper display. When the controller detects that the gas

has been applied to the sensor, the upper display will read ‘gas’. Once the controller has finished the gain

adjustments it will alternate ‘Cut’ and ‘gas’ on the upper display, telling the user that it is time to remove

the calibration gas. Upon completion of the calibration the controller will automatically return to the

normal operating mode.

If the operator fails to complete the calibration procedure, if an error in the calibration procedure occurs, or

if a successful calibration cannot be completed, the microprocessor will automatically return to the Normal

Operating Mode and continue to use the previous calibration data. A fault indication will be displayed until

a reset occurs. If the microprocessor determines that the sensor is approaching the end of its useful life, a

fault code will indicate this.

- 7 -

While in the calibration mode, all controller outputs for the affected channel are inhibited, the current

output is 3mA, and the ‘Cal’ LED is illuminated. All other channels remain active, however if an alarm

condition occurs, the only display indication will be a flashing channel LED, all other display features will

be inhibited.

Set-Point Display (Spd):

In this mode, the digital display sequentially shows the programmed low and high alarm set-points,

calibration gas concentration, and communication addresses. Each value is displayed for approximately 2

seconds.

Address Set (Adr Set):

The communication addresses for Digital Communications are set in this mode, which is found in the main

menu. The MENU/SET and SELECT/RESET buttons are used to raise and lower the address. This mode

can only be exited by allowing ten seconds to go by without pressing either button.

Error Message Display (Err Chc):

The microprocessor-based controller features self-testing circuitry that continuously checks for problems

that could prevent proper system response. As a diagnostic and troubleshooting tool, identifiable faults are

displayed on the digital display, using error codes, during the Error Message Display Mode. The controller

will also display an error message after the last channel in the cycling routine.

Channel Display (Chd):

In this mode, the displays can be forced to monitor only one channel, as long as no alarms are occurring, on

other channels. If an alarm occurs on the channel that is being monitored, the controller will remain in the

manual display mode. If an alarm occurs on any other channel the controller will automatically return to

the Normal Operating Mode.

Unit II

SYSTEM INSTALLATION

INSTALLATION

SENSOR LOCATIONS

Proper location of the sensors is essential for providing maximum protection. The method for deciding the

most effective number and placement of sensors varies depending on the conditions at the job site. The

individual performing the installation must rely on experience, common sense, and knowledge of plant

operations to determine the number of sensors needed and the best controller locations to protect the area

adequately.

The following factors are important and should be considered for every installation:

< Sensors should be located where they are safe from potential sources of contamination

< Refer to sensor application manuals and follow guidelines for sensor installation

< Sensors must be accessible for testing and calibration

< Exposure to excessive heat or vibration can cause premature failure of electronic devices, and

should be avoided if possible

- 8 -

GENERAL WIRING REQUIREMENTS

NOTE

The wiring procedures in this manual are intended to ensure proper functioning of the device

under normal conditions. However, because of the many variations in wiring codes and regula-

tions, total compliance to these ordinances cannot be guaranteed. Be certain that all wiring

complies with applicable regulations that relate to the installation of electrical equipment in a

hazardous area. If in doubt, consult a qualified official before wiring the system.

The use of shielded cable is highly recommended for any signal wires to protect against interference caused

by extraneous electrical 'noise'. This includes power and current outputs; relay outputs do not require

shielded cable. In applications where the wiring cable is installed in conduit, the conduit must not be used

for wiring to other electrical equipment.

Water will damage electronic devices. Moisture in the air can condense within electrical conduit and drain

into the enclosure, therefore, water-proof and explosion-proof conduit seals are recommended to prevent

water accumulation within the enclosure. Seals should be located as close to the device as possible and not

more than 18 inches (46 cm) away. Explosion-proof installations may require an additional seal where

conduit enters a non-hazardous area. Conform to local wiring codes.

When pouring a seal, use a fibre dam to assure proper formation of the seal. The seals should never be

poured at temperatures below freezing.

The jacket and shielding of the cable should be stripped back to permit the seal to form around the

individual wires. This will prevent air, gas and water leakage through the inside of the shield and into the

enclosure.

It is recommended that explosion-proof drains and conduit breathers be used. In some applications,

alternate changes in temperature and barometric pressure can cause 'breathing' which allows moist air to

enter and circulate inside the conduit. Joints in the conduit system are seldom tight enough to prevent this

'breathing'.

CONTROLLER WIRING

NOTE

The controller contains semiconductor devices that are susceptible to damage by electrostatic

discharge. An electrostatic charge can build up on the skin and discharge when an object is

touched. Therefore, use caution when handling, taking care not to touch the terminals or electron-

ic components. For more information on proper handling, refer to the Appendix.

The Uni-Trol™ controllers can be wired for isolated or non-isolated current outputs by changing the

positions of ‘J12' and ‘J18', as shown in Figure 3. Figures 4a, 5a, and 6a show the terminal proper wiring

of the controller for non-isolated current outputs with 2 and 3 wire sensors. Figures 4b, 5b and 6b show

the proper wiring of the controller for isolated current outputs with 2 and 3 wire sensors.

NOTE

If local wiring codes permit, and if a ground fault monitoring system is not being used, the minus

side of the DC power source can be connected to chassis (earth) ground. Alternatively, a 0.47

microfarad, 100 Volt capacitor can be installed (negative side of power supply terminal 13, to

chases ground, terminal 8).

- 9 -

BLK

RED

BLK

SENSOR

CONTROLLER

SENSOR INPUT 1. J17 (9)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SHIELD TO SYSTEM COMMON

J17 (18,19)

CUT SHIELD

ST1200 H2S SENSOR

OR OTHER 2 WIRE SENSOR

TRANSMITTER

SC1100 LEL SENSOR

SENSOR

RED

BLK

CONTROLLER

RED

WHT

CUT SHIELD

SHIELD TO SYSTEM COMMON J17 (18,19)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SENSOR INPUT 1. J17 (9)

WHT

BLK

SYSTEM COMMON. J17 (18,19)

CAN -

CAN +

NOT USED

REMOTE RESET

CHASIS GROUND

NOT USED

SENSOR INPUT 1

NOT USED

- 24Vdc SYSTEM POWER

NOT USED

AREA 1 CURRENT OUTPUT

+ 24Vdc SYSTEM POWER

HIGH ALARM RELAY

FAULT RELAY

24Vdc

R1G-XXXX CONTROLLER

NON-ISOLATED CURRENT OUTPUT

TO USER EQUIPMENT

ALARM RELAY CONTACTS ARE

JUMPER SELECTABLE AS N.O.

OR N.C.

FAULT RELAY COIL IS

NORMALLY ENERGIZED

JB AND

TERMINAL

BOARD

TX-LEL-C-24

TRANSMITTER

NOT USED

AREA 1 LOW ALARM RELAY

SENSOR POWER (+24Vdc)

SYSTEM COMMON

EXTERNAL POWER FOR CURRENT OUTPUT

SYSTEM COMMON

J16

J17

4-20mA LOOP

Figure 4a - Wiring for R1G with Non-Isolated Current Output

- 10 -

BLK

RED

BLK

SENSOR

CONTROLLER

SENSOR INPUT 1. J17 (9)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SHIELD TO SYSTEM COMMON

J17 (18,19)

CUT SHIELD

ST1200 H2S SENSOR

OR OTHER 2 WIRE SENSOR

TRANSMITTER

SC1100 LEL SENSOR

SENSOR

RED

BLK

CONTROLLER

RED

WHT

CUT SHIELD

SHIELD TO SYSTEM COMMON J17 (18,19)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SENSOR INPUT 1. J17 (9)

WHT

BLK

SYSTEM COMMON. J17 (18,19)

CAN -

CAN +

NOT USED

REMOTE RESET

CHASIS GROUND

NOT USED

SENSOR INPUT 1

NOT USED

- 24Vdc SYSTEM POWER

NOT USED

AREA 1 CURRENT OUTPUT

+ 24Vdc SYSTEM POWER

HIGH ALARM RELAY

FAULT RELAY

24Vdc

R1G-XXXX CONTROLLER

ISOLATED CURRENT OUTPUT

TO USER EQUIPMENT

ALARM RELAY CONTACTS ARE

JUMPER SELECTABLE AS N.O.

OR N.C.

FAULT RELAY COIL IS

NORMALLY ENERGIZED

JB AND

TERMINAL

BOARD

TX-LEL-C-24

TRANSMITTER

24Vdc

NOT USED

AREA 1 LOW ALARM RELAY

SENSOR POWER (+24Vdc)

SYSTEM COMMON

EXTERNAL POWER FOR CURRENT OUTPUT

SYSTEM COMMON

J16

J17

4-20mA LOOP

Figure 4b - Wiring for R1G with Isolated Current Output

- 11 -

BLK

RED

BLK

SENSOR

CONTROLLER

SENSOR INPUT 1. J17 (9) OR SENSOR INPUT 2 J17 (10)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SHIELD TO SYSTEM COMMON

J17 (18,19)

CUT SHIELD

ST1200 H2S SENSOR

OR OTHER 2 WIRE SENSOR

TRANSMITTER

SC1100 LEL SENSOR

SENSOR

RED

BLK

CONTROLLER

RED

WHT

CUT SHIELD

SHIELD TO SYSTEM COMMON J17 (18,19)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SENSOR INPUT 1. J17 (9) OR SENSOR INPUT 2 J17 (10)

WHT

BLK

SYSTEM COMMON. J17 (18,19)

CAN -

CAN +

NOT USED

REMOTE RESET

CHASIS GROUND

NOT USED

SENSOR INPUT 2

SENSOR INPUT 1

NOT USED

- 24Vdc SYSTEM POWER

NOT USED

AREA 2 CURRENT OUTPUT

AREA 1 CURRENT OUTPUT

+ 24Vdc SYSTEM POWER

HIGH ALARM RELAY

FAULT RELAY

24Vdc

R2G-XXXX CONTROLLER

NON-ISOLATED CURRENT OUTPUT

TO USER EQUIPMENT

ALARM RELAY CONTACTS ARE

JUMPER SELECTABLE AS N.O.

OR N.C.

FAULT RELAY COIL IS

NORMALLY ENERGIZED

TWO (2)

JB AND

TERMINAL

BOARD

TWO (2)

TX-LEL-C-24

TRANSMITTER

AREA 2 LOW ALARM RELAY

AREA 1 LOW ALARM RELAY

SENSOR POWER (+24Vdc)

SYSTEM COMMON

EXTERNAL POWER FOR CURRENT OUTPUT

SYSTEM COMMON

J16

J17

4-20mA LOOP

Figure 5a - Wiring for R2G with Non-Isolated Current Output

- 12 -

BLK

RED

BLK

SENSOR

CONTROLLER

SENSOR INPUT 1. J17 (9) OR SENSOR INPUT 2 J17 (10)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SHIELD TO SYSTEM COMMON

J17 (18,19)

CUT SHIELD

ST1200 H2S SENSOR

OR OTHER 2 WIRE SENSOR

TRANSMITTER

SC1100 LEL SENSOR

SENSOR

RED

BLK

CONTROLLER

RED

WHT

CUT SHIELD

SHIELD TO SYSTEM COMMON J17 (18,19)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SENSOR INPUT 1. J17 (9) OR SENSOR INPUT 2 J17 (10)

WHT

BLK

SYSTEM COMMON. J17 (18,19)

CAN -

CAN +

NOT USED

REMOTE RESET

CHASIS GROUND

NOT USED

SENSOR INPUT 2

SENSOR INPUT 1

NOT USED

- 24Vdc SYSTEM POWER

NOT USED

AREA 2 CURRENT OUTPUT

AREA 1 CURRENT OUTPUT

+ 24Vdc SYSTEM POWER

HIGH ALARM RELAY

FAULT RELAY

R2G-XXXX CONTROLLER

ISOLATED CURRENT OUTPUT

ALARM RELAY CONTACTS ARE

JUMPER SELECTABLE AS N.O.

OR N.C.

FAULT RELAY COIL IS

NORMALLY ENERGIZED

TWO (2)

JB AND

TERMINAL

BOARD

TWO (2)

TX-LEL-C-24

TRANSMITTER

AREA 2 LOW ALARM RELAY

AREA 1 LOW ALARM RELAY

SENSOR POWER (+24Vdc)

SYSTEM COMMON

EXTERNAL POWER FOR CURRENT OUTPUT

SYSTEM COMMON

J16

J17

TO USER EQUIPMENT

24Vdc

4-20mA LOOP

Figure 5b - Wiring for R2G with Isolated Current Output

- 13 -

BLK

RED

BLK

SENSOR

CONTROLLER

SENSOR INPUT 1. J17 (9) OR SENSOR INPUT 2 J17 (10) OR

SENSOR INPUT 3 J17 (11) OR SENSOR INPUT 4 J17 (12)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SHIELD TO SYSTEM COMMON

J17 (18,19)

CUT SHIELD

ST1200 H2S SENSOR

OR OTHER 2 WIRE SENSOR

TRANSMITTER

SC1100 LEL SENSOR

SENSOR

RED

BLK

CONTROLLER

RED

WHT

CUT SHI ELD

SHIELD TO SYSTEM COMMON J17 (18,19)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SENSOR INPUT 1. J17 (9) OR SENSOR INPUT 2 J17 (10) OR SENSOR INPUT 3

J17 (11) OR SENSOR INPUT 4 J17 (12)

WHT

BLK

SYSTEM COMMON. J17 (18,19)

CAN -

CAN +

NOT USED

REMOTE RESET

CHASIS GROUND

NOT USED

SENSOR INPUT 2

SENSOR INPUT 1

SENSOR INPUT 3

- 24Vdc SYSTEM POWER

SENSOR INPUT 4

AREA 2 CURRENT OUTPUT

AREA 1 CURRENT OUTPUT

+ 24Vdc SYSTEM POWER

HIGH ALARM RELAY

FAULT RELAY

R4G-XXXX CONTROLLER

NON-ISOLATED CURRENT OUTPUT

ALARM RELAY CONTACTS ARE

JUMPER SELECTABLE AS N.O.

OR N.C.

FAULT RELAY COIL IS

NORMALLY ENERGIZED

FOUR (4)

JB AND

TERMINAL

BOARD

FOUR (4)

TX-LEL-C-24

TRANSMITTER

AREA 2 LOW ALARM RELAY

AREA 1 LOW ALARM RELAY

SENSOR POWER (+24Vdc)

SYSTEM COMMON

EXTERNAL POWER FOR CURRENT OUTPUT

SYSTEM COMMON

J16

J17

TO USER EQUIPMENT

4-20mA LOOP

24Vdc

Figure 6a - Wiring for R4G with Non-Isolated Current Output

- 14 -

BLK

RED

BLK

SENSOR

CONTROLLER

SENSOR INPUT 1. J17 (9) OR SENSOR INPUT 2 J17 (10) OR

SENSOR INPUT 3 J17 (11) OR SENSOR INPUT 4 J17 (12)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SHIELD TO SYSTEM COMMON

J17 (18,19)

CUT SHIELD

ST1200 H2S SENSOR

OR OTHER 2 WIRE SENSOR

TRANSMITTER

SC1100 LEL SENSOR

SENSOR

RED

BLK

CONTROLLER

RED

WHT

CUT SHIELD

SHIELD TO SYSTEM COMMON J17 (18,19)

SENSOR POWER 24Vdc. J17 (20 OR 21)

SENSOR INPUT 1. J17 (9) OR SENSOR INPUT 2 J17 (10) OR SENSOR INPUT 3

J17 (11) OR SENSOR INPUT 4 J17 (12)

WHT

BLK

SYSTEM COMMON. J17 (18,19)

CAN -

CAN +

NOT USED

REMOTE RESET

CHASIS GROUND

NOT USED

SENSOR INPUT 2

SENSOR INPUT 1

SENSOR INPUT 3

- 24Vdc SYSTEM POWER

SENSOR INPUT 4

AREA 2 CURRENT OUTPUT

AREA 1 CURRENT OUTPUT

+ 24Vdc SYSTEM POWER

HIGH ALARM RELAY

FAULT RELAY

R4G-XXXX CONTROLLER

ISOLATED CURRENT OUTPUT

ALARM RELAY CONTACTS ARE

JUMPER SELECTABLE AS N.O.

OR N.C.

FAULT RELAY COIL IS

NORMALLY ENERGIZED

FOUR (4)

JB AND

TERMINAL

BOARD

FOUR (4)

TX-LEL-C-24

TRANSMITTER

AREA 2 LOW ALARM RELAY

AREA 1 LOW ALARM RELAY

SENSOR POWER (+24Vdc)

SYSTEM COMMON

EXTERNAL POWER FOR CURRENT OUTPUT

SYSTEM COMMON

J16

J17

TO USER EQUIPMENT

24Vdc

4-20mA LOOP

Figure 6b - Wiring for R4G with Isolated Current Output

- 15 -

Figure 7b - Dip Switch

DIP SWITCH SETTINGS

NOTE

See Table 4 for a list of the standard factory settings.

It is essential that the controller be properly programmed before applying power to the system. There are

three banks of dip switches located on the controller. Each switch bank has eight individual switches that

can be set to an on or off position.

NOTE

The dip switches are located on the circuit board. The switch banks are numbered from bottom to

top as numbers SW3, SW4, and SW5. Refer to Figure 7a. Individual switches are referenced as

‘X.Y’, where ‘X’ refers to the bank number and ‘Y’ refers to the switch number on ‘X’ bank. For

example, switch 3.4 (SW3.4) is switch number four on bank number three.

Switches are set as either OFF or ON. Refer to Figure 7b.

Figure 7a - Relay and Dip Switch Positions

NOTE

IT IS VERY IMPORTANT THAT POWER TO THE CONTROLLER IS RECYCLED AFTER ANY

DIP SWITCH CHANGES, TO MAKE THE CHANGES TAKE EFFECT!

ACTIVE CHANNELS

Switches for setting the active channels (the channels that are to have sensors/transmitters attached) can be

found on Switch Bank 3, switches 1 to 4 (SW3.1 through SW3.4). Set the designated switch to OFF if the

channel is to be connected (sensor attached), and ON if the channel is not to be used.

SW3.1: OFF: channel 1 connected

ON: channel 1 not connected

SW3.2: OFF: channel 2 connected

ON: channel 2 not connected

SW3.3: OFF: channel 3 connected

ON: channel 3 not connected

SW3.4: OFF: channel 4 connected

ON: channel 4 not connected

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NetSafety UNI-TROL Rack-Mount-Gas Controller Owner's manual

NetSafety UNI-TROL Rack-Mount-Gas Controller Owner's manual

NetSafety UNI-TROL Rack-Mount-Gas Controller Owner's manual

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