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Opacity and Dust Monitor
User Guide
Model 4500 MkIII
A - 28
A4.13 Reflector Shutter Control
Terminal Function
Shutter/AFU Terminal
Colour
20
Shutter
Supply
0V
AFU
27 -
21
Shutter
Supply
+24V
1 Red
22
Shutter
Open
NC
3 Blue
23
Shutter
Open
COM
5 Green
24
Screen
- Screen
25
Shutter
Closed
NO
7 Yellow
26
Shutter
Closed
COM
6 White
27
Open
Shutter
Common
AFU
20 -
28
Open
Shutter
2 Black
Note:
For correct operation, link AFU terminals 20 and 27.
Refer to Appendix A for connections of earlier AC-powered versions of the shutter.
A4.14 RS485 Modbus Control Port
For 2 wire operation, connect 46 to 42 and 45 to 43.
Terminal Function
40
Cable Screen
41
Cable Screen
42
Modbus TXD1
43
Modbus TXD0
44
Modbus Common
45
Modbus RXD0
46
Modbus RXD1
Baud and parity settings on S1
S1-1
S1-2
S1-3
S1-4
19200, Even, 1 stop
ON
OFF
OFF
OFF
(normal setting for Modbus)
9600, Even, 1 stop ON
ON
OFF
OFF
9600, None, 1 stop ON
ON
ON
ON
Termination and bias settings on S4 (See B4.9 for explanation):
S4-1
S4-2
S4-3
S4-4
Terminated
OFF
OFF
ON
OFF
(normal setting)
Terminate
and
bias ON
ON
ON
OFF
Un-terminated
OFF
OFF
ON
OFF
A4.15 RS232 Modbus Control Port
Terminal Function
2
TXD
3
RXD
5 Common
A4.16 Function Selector Switch
All switches are set to ON at the factory.
T
erminal Function
S7-1
Ambient temperature monitoring
S7-2
Reserved
S7-3
Calibration trigger and fuel selector inputs
S7-4
Blower monitoring and shutter control
Содержание 4500 MKIII
Страница 4: ...Opacity and Dust Monitor User Guide Model 4500 MkIII Preface Blank...
Страница 6: ...INTRODUCTION A...
Страница 27: ...A 21 Model 4500 MkIII Opacity and Dust Monitor User Guide A3 15 Installation with a Weather Cover Part N 809881...
Страница 29: ...A 23 Model 4500 MkIII Opacity and Dust Monitor User Guide A4 3 Mounting the AFU APS I O...
Страница 41: ...GETTING STARTED B...
Страница 42: ...Opacity and Dust Monitor User Guide Model 4500 MkIII Preface Blank...
Страница 76: ...THEORY OF OPERATION AND APPLICATION C...
Страница 86: ...SYSTEM SPECIFICATION D...
Страница 91: ...MAINTENANCE E...
Страница 108: ...CHANGING THE INSTALLATION PATHLENGTH F...
Страница 113: ...INSTRUMENT RECORD SHEETS G...
Страница 114: ...Blank...
Страница 117: ...OPTIONAL I O MODULES FOR AFU H...
Страница 118: ...Blank...
Страница 124: ...LONG PATHLENGTH OPTION App 1...
Страница 126: ...Opacity and Dust Monitor User Guide Model 4500 MkIII App 1 2...