Fan Coil Actuator FCA 2
Updated: Feb-16 (subject to changes) Page
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Object 9 "Limitation of fan stage in %", "Limitation of fan stage (1-2-3)"
This object can be used to set the maximum permitted actuating value and the associated
maximum fan stage, either as a percentage value or as stage (1-3).
1
With 0-10 V fan control, only the percentage value format is permitted.
The following values are used.
Table 7
Value
Highest permissible fan stage
0 %
The fan is not switched on
1 % .. 99 % Maximum permissible fan speed for normal and forced operation
100 %
No limit, automatic operation (= object value after reset)
Example of percentage value:
Configured switch-on thresholds:
Fan stage 1, or switch-on threshold (at 0-10 V) = 10 %
Fan stage 2 = 40 % (only with standard)
Fan stage 3 = 70 % (only with standard)
Table 8: Standard fan controller.
Received value on object 9
Maximum fan stage
0 % .. 9 %
2
The fan is not switched on
10 % .. 39 %
1
40 % .. 69 %
2
70 % .. 100 %
3
3
Table 9: 0-10 V Fan controller.
Received value on object 9
Maximum fan speed
0 % .. 9 %
2
The fan is not switched on
10 % .. 99 %
Value from object 9
•
Object 10 "Fan off“
Report object for the fan status.
Sends a 1 if the fan is switched off.
1
See parameter
Format of forced operation and limitation
on Fan parameter
page.
2
The value is under the switch-on threshold for stage 1, the fan cannot be switched on.
3
The value is greater/equal to the switch-on threshold for stage 3, i.e. no limitation.
