|
Access 5.x |
Plate exchanger configuration example |
The airflow through the exchanger is controlled by a shut-off damper and a by-pass damper. Both dampers are controlled by the same "Exchanger" type sequence.
The table below shows a configuration example of the hardwired plate exchanger.
Variable |
Available options & Selection |
Note |
|
Sequence selection |
|||
Configuration > Functions > Function activation > Heating/Cooling sequence setup |
|||
Sequence for exchanger |
| SEQ-A | SEQ-B Exchanger |...| |
||
Sequence settings |
|||
Configuration > Functions > Function activation > Heating/Cooling sequence setup > Exchanger |
|||
Type of sequence |
|Cooling | Exchanger | Heating | Damper | Fan setpoint compensation | |
||
Type of exchanger |
| Rotary | Plate | Liquid | |
||
Digital start output |
| No | Yes | |
||
Type of defrosting |
| None | Temperature monitoring | Pressure monitoring | Section defrosting | |
||
Sequence output when recirculation/support |
| 0% | 100% | Auto | |
||
Sequence output min limit |
0% |
||
Sequence output max limit |
100% |
||
Sequence output when the unit is stopped |
0% |
||
PID Settings |
|||
Configuration > PID controllers > Exchanger |
|||
P-band |
10 oC |
PID settings for the sequence |
|
I-time |
100 s |
||
D-time |
0 s |
||
Hardwired interface to the Exchanger controller |
|||
Configuration > I/O allocation settings > |
|||
Analog outputs > Exchanger (SEQ-B) |
Any available I/O |
Sequence output to the exchanger controller |
|
Sequence control settings |
|||
Data & Settings > Temperature control > Exchanger |
|||
Start delay exchanger |
0 s |
||
100% exchanger at start up |
2 s |
||
Graphical representation |
|||
Flowchart |
|||
|
75% - indication of sequence output Exchanger open 75% By-pass open 25% |
||
