Table des Matières
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SOMMAIRE
Légende carte principale CPU MRS3 4
Légende carte de commande
3.1.
3.2.
3.3.
3.4.
- Liste des paramètres
6.1.
6.2.
6.3.
6.4.
6.5.
7.1.
7.2.
7.3.
7.4.
7.5.
7.6.
7.7.
7.8.
7.9.
8.1.
8.2.
8.3.
11.1. Puissance maxi
distance
- Raccordement pour liaison RS 485 (2 fils)
- Raccordement pour liaison RS 485 (4 fils)
17. Protocole MODBUS MRS3 4
18. Signalisation des voyants
PAGE
4
4
5 à to 7
8
9
10
10
11
11
11
12 à to 15
16
16
16
17 et and 18
18 à to 20
20
20 et and 21
6.5. Control temperature as function of external temperature
21
21
21 et and 22
23
23
23
24
25 à to 28
29
29 et and 30
30
31
31 et and 32
32 et / and 33
34
34
35 et and 36
36
36
36
36 et and 37
37
38
11. Servo control and external commands
38
38
38
38
38
38
38
39
39
39
40
40
41 et and 42
42 à to 50
51
52
53
54 à to 56
57
3
2. Composition
CPU MRS3 4 main card legend
3. Description
3.2. Control and display panel
3.3. Remote control
4. Configuration
- List of parameters
5. Operating mode
6.1. Type of control
6.2. Standard control
6.4. Forced control with transfer
7. Study of the functions
7.1. Control of chilled or hot water temperatures
7.3. Automatic re starting
7.4. Water circulation fault
7.8. Additional heating
7.11. Load sheddubg
7.12. Compressors safety :
- Oil pressure safety
- Compressor motor overload
- Discharge temperature control
9. Validation of compressor operation
10.1. Number of settings
10.2. Adjustment of setting
11.1. Maximun ouput
11.3. Heating / cooling selection
11.4. Setting 1 / setting 2 selection
11.5. Forced stages control
11.7. Additional heating control
11.8. Automatic control
11.9. Load shedding
11.10. Clients connection of inputs
12. Test mode
13. Starting up
14. Remote control of the unit
15. Relay cards
- RS 485 (2 wires) liaison connection
- RS 485 (4 wires) liaison connection
MRS3 4 MODBUS protocole
Signaficance of display lights
SUMMARY
1. General
Control card legend
Set of cards
3.1. Main card
3.4. Relay card
6. Control
6.3. PIDT control
7.2. Starting priority
7.5. Frost limit
7.6. Operating limit
7.7. Defrosting
7.9. External fans
7.10. Counting
- Anti short cycle
- High pressure
- Low pressure
8. Sensors
8.1. Characteristics
8.2. Sensor control
8.3. Indications
10. Setting
11.2. General fault
11.6. Pump control
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