Hoffer Flow Controls HIT-2A, Руководство пользователя

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HP-306
CONTENTS
1. Introduction --------------------------------------------------------------- 1
1-1 Model Number Designation ---------------------------------------- 2
2. SPECIFICATIONS ------------------------------------------------------ 3
2-1 General ---------------------------------------------------------------- 3
2-2 Inputs ------------------------------------------------------------------ 3
2-3 Battery Powered Version ------------------------------------------- 4
2-4 DC Power/Loop Powered------------------------------------------- 4
2-5 AC Power ------------------------------------------------------------- 4
2-6 Analog (4-20mA) Output Option ---------------------------------- 4
2-7 Pulse Output Option ------------------------------------------------- 5
2-8 Alarm Output Option------------------------------------------------ 5
2-9 Physical --------------------------------------------------------------- 5
3. Theory of Operation ----------------------------------------------------- 7
3-1 Functional Blocks---------------------------------------------------- 7
3-1-1 User Interface--------------------------------------------------- 7
3-1-2 Preamplifier----------------------------------------------------- 7
3-1-3 Microcontroller------------------------------------------------- 7
3-1-4 Loop Driver----------------------------------------------------- 8
3-1-5 Pulse and Alarm Output--------------------------------------- 8
3-1-6 Communications Interface------------------------------------ 9
3-2 System Response Time---------------------------------------------- 9
4. Installation ---------------------------------------------------------------- 11
4-1 Typical Input Connections----------------------------------------- 11
4-2 Typical Output Connections--------------------------------------- 14
4-3 Communications Connections------------------------------------- 17
4-4 Wiring ---------------------------------------------------------------- 17
4-5 Terminal Designations --------------------------------------------- 17
5. Configuration ------------------------------------------------------------ 19
5-1 Local Configuration ------------------------------------------------ 19
5-2 Default Configuration ---------------------------------------------- 22
5-3 Remote Configuration---------------------------------------------- 22
6. Operation and Maintenance------------------------------------------- 23
6-1 Operation------------------------------------------------------------- 23
6-2 Maintenance --------------------------------------------------------- 24
6-3 Error Messages ------------------------------------------------------ 24
6-4 Analog Output Calibration----------------------------------------- 25
Appendix A – Default Configuration -------------------------------------- 27
Appendix B - Communications --------------------------------------------- 29
Message Format And Timeout --------------------------------------------- 29
Messages---------------------------------------------------------------------- 31