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Net Safety Monitoring Inc

Modbus Controller & 4-20 Fire Head

14

Appendix E: R

ESISTANCE

 T

ABLE

 (O

HMS

)

Note:

Resistance shown is one way. This figure should be doubled when determining closed loop resistance.

Distance (Feet)

AWG #20

AWG #18

AWG #16

AWG #14

AWG #12

AWG #10

AWG #8

100

1.02

0.64

0.40

0.25

0.16

0.10

0.06

200

2.03

1.28

0.80

0.51

0.32

0.20

0.13

300

3.05

1.92

1.20

0.76

0.48

0.30

0.19

400

4.06

2.55

1.61

1.01

0.64

0.40

0.25

500

5.08

3.20

2.01

1.26

0.79

0.50

0.31

600

6.09

3.83

2.41

1.52

0.95

0.60

0.38

700

7.11

4.47

2.81

1.77

1.11

0.70

0.44

800

8.12

5.11

3.21

2.02

1.27

0.80

0.50

900

9.14

5.75

3.61

2.27

1.43

0.90

0.57

1000

10.20

6.39

4.02

2.53

1.59

1.09

0.63

1250

12.70

7.99

5.03

3.16

1.99

1.25

0.79

1500

15.20

9.58

6.02

3.79

2.38

1.50

0.94

1750

17.80

11.20

7.03

4.42

2.78

1.75

1.10

2000

20.30

12.80

8.03

5.05

3.18

2.00

1.26

2250

22.80

14.40

9.03

5.68

3.57

2.25

1.41

2500

25.40

16.00

10.00

6.31

3.97

2.50

1.57

3000

30.50

19.20

12.00

7.58

4.76

3.00

1.88

3500

35.50

22.40

14.10

8.84

5.56

3.50

2.21

4000

40.60

25.50

16.10

10.00

6.35

4.00

2.51

4500

45.70

28.70

18.10

11.40

7.15

4.50

2.82

5000

50.10

32.00

20.10

12.60

7.94

5.00

3.14

5500

55.80

35.10

22.10

13.91

8.73

5.50

3.46

6000

61.00

38.30

24.10

15.20

9.53

6.00

3.77

6500

66.00

41.50

26.10

16.40

10.30

6.50

4.08

7000

71.10

44.70

28.10

17.70

11.10

7.00

4.40

7500

76.10

47.90

30.10

19.00

12.00

7.49

4.71

8000

81.20

51.10

23.10

20.20

12.70

7.99

5.03

9000

91.40

57.50

36.10

22.70

14.30

8.99

5.65

10 000

102.00

63.90

40.20

25.30

15.90

9.99

6.28

Summary of Contents for MAN-0069

Page 1: ...4 20 mA FIRE HEAD with Analog RS 485 Modbus AD CONTROLLER User Manual Part Number MAN 0069 Rev 2 May 2006...

Page 2: ......

Page 3: ...ed 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 he...

Page 4: ...sitions Current Output 5 MODBUS Termination 6 Figure 8 Modbus Termination Jumpers 6 Step 4 Operate 7 Figure 9 Controller Functionality 7 The Main Menu 8 Accessing the Main Menu 8 Calibration Button 8...

Page 5: ...ps B C and D for hazardous applications It was designed for either a 1 man intrusive calibration or 2 man non intrusive calibration The Manual The manual has been designed to make installation of the...

Page 6: ...Figure 2 Components Note Refer to the specific Fire Head manual for components LOCATE CONTROLLER FIRE HEAD Fire Head Locate Fire Heads as per the manual provided with the specific product Controller T...

Page 7: ...eals 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...

Page 8: ...be used for separations up to 2000 feet Consult the factory if a greater separation distance is required Ensure the appropriate wire is used for Class 1 Division 1 hazardous applications Note If the...

Page 9: ...ote Unless otherwise specified all models ship with non Isolated current output Figure 7 Jumper Positions Current Output RST 24V COM 4 20 ISO Power to Monitor Supply Terminal Board Power Terminal Stri...

Page 10: ...ad 6 MODBUS TERMINATION Devices are networked in a daisy chain The device located at the end of the chain requires end of line termination Place both jumpers over the pins as shown in Figure 8 for end...

Page 11: ...s messages and prompts Refer to Table 4 Current Output LEDs and Display Messages on page 10 Pull Here knob unscrew the two screws and gently pull to remove faceplate Removal allows access to the PCB b...

Page 12: ...lock position to make a selection select YES Main Menu Functionality 1 Ensure that the Controller has been turned on and no fault is present 2 Hold the magnet against the Reed Switch or press and hold...

Page 13: ...3 Wait for the prompt New Address YES and press the Calibration Button or use the Reed Switch to select Step 4 Use the Calibration Button or Reed Switch to select each of three numbers in the new add...

Page 14: ...u l t Start Delay 90 seconds 3 0 mA Blip S t a r t D e l a y M i l l e n n i u m Normal Operation 4 0 mA Blip N O R M Background radiation source UV 6 0 mA Flash U V P r e s e n t Background radiatio...

Page 15: ...re specific you are regarding the problem the quicker our Service department can determine and correct the problem 3 A company name contact name and telephone number 4 A Purchase Order from your compa...

Page 16: ...ver 2 Turn the power to the detector off 3 Unscrew both the knobs marked Pull Here 4 Lift Controller faceplate from Housing and allow to hang from ribbon cable 5 Unscrew the two metal standoffs 6 Care...

Page 17: ...for an indefinite period of time followed by a sudden failure To eliminate potential ESD damage review the following guidelines Handle boards by metal shields taking care not to touch electronic comp...

Page 18: ...1 09 0 63 1250 12 70 7 99 5 03 3 16 1 99 1 25 0 79 1500 15 20 9 58 6 02 3 79 2 38 1 50 0 94 1750 17 80 11 20 7 03 4 42 2 78 1 75 1 10 2000 20 30 12 80 8 03 5 05 3 18 2 00 1 26 2250 22 80 14 40 9 03 5...

Page 19: ...at units power terminals Enclosure Material Powder coated Copper Free Cast Aluminum Certifications CSA and NRTL C certified for hazardous locations Class I Division 1 Groups B C and D Temperature T5...

Page 20: ...Net Safety Monitoring Inc 2721 Hopewell Place NE Calgary Alberta Canada T1Y 7J7 Telephone 403 219 0688 Fax 403 219 0694 E mail netsafe net safety com www netsafety com Distributed by...

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