User manual - METER SRP-457
CONTENTS
1. BASIC REQUIREMENTS AND USER SAFETY........................................................................................3
2. GENERAL CHARACTERISTICS................................................................................................................4
3. TECHNICAL DATA......................................................................................................................................4
4. DEVICE INSTALLATION............................................................................................................................6
4.1. UNPACKING.......................................................................................................................................6
4.2. ASSEMBLY........................................................................................................................................6
4.3. CONNECTION METHOD...................................................................................................................8
4.4. MAINTENANCE................................................................................................................................12
5. FRONT PANEL DESCRIPTION................................................................................................................13
6. PRINCIPLE OF OPERATION...................................................................................................................13
6.1. MEASUREMENT MODE..................................................................................................................13
6.2. DETECTION OF THE PEAK VALUES............................................................................................14
6.3. CONTROL OF THE RELAY OUTPUTS..........................................................................................15
6.3.1. On thr shold mod ................................................................................................................16
6.3.2. Two thr sholds mod ..............................................................................................................18
7. DEVICE PROGRAMMING.........................................................................................................................19
7.1. PROGRAMMING MENU..................................................................................................................19
7.2. PARAMETERS EDITION.................................................................................................................20
7.2.1. Num ric param t rs (digit chang mod )...............................................................................20
7.2.2. Num ric param t rs (slid chang mod )..............................................................................20
7.2.3. Switch param t rs (“LIST” typ ).............................................................................................21
7.3. MENU DESCRIPTION.....................................................................................................................21
7.3.1. “rEL1” m nu.............................................................................................................................21
7.3.2. “bEEP” m nu...........................................................................................................................24
7.3.3. “inPt” m nu..............................................................................................................................24
7.3.4. ”bri” param t r.........................................................................................................................29
7.3.5. ”HOLd” m nu...........................................................................................................................29
7.3.6. ”SECu” m nu...........................................................................................................................30
7.3.7. ”rS” m nu.................................................................................................................................30
7.3.8. ”Edit” param t r......................................................................................................................31
7.3.9. ”dEFS” param t r....................................................................................................................32
7.3.10. ”SErv” m nu..........................................................................................................................32
7.4. MENU STRUCTURE........................................................................................................................33
. OVER-CURRENT PROTECTION.............................................................................................................35
9. DISPLAYED VALUES CALCULATION....................................................................................................35
9.1. ADDITIONAL CALCULATIONS (USED CONVERSION CHARACTERISTIC)...............................35
9.1.1. Lin ar charact ristic................................................................................................................36
9.1.2. Squar charact ristic..............................................................................................................36
9.1.3. Squar root charact ristic.......................................................................................................37
9.1.4. Us r d fin d charact ristic.....................................................................................................37
9.1.5. Volum charact ristics of a cylindrical tank............................................................................38
9.2. EXAMPLES OF CALCULATIONS...................................................................................................39
10. THE MODBUS PROTOCOL HANDLING...............................................................................................43
10.1. LIST OF REGISTERS....................................................................................................................44
10.2. TRANSMISSION ERRORS DESCRIPTION..................................................................................47
10.3. EXAMPLES OF QUERY/ANSWER FRAMES...............................................................................48
11. DEFAULT AND USER'S SETTINGS LIST.............................................................................................50
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