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•
Partial Search
e.g. after replacement of a defective fan
Condition: the new fan must have the Modbus address 1 (factory setting). If this is not the case, the
Manual Search (recommended) or the Complete Search must be performed.
•
Complete Search
for all fans (recommended for initial commissioning)
Note: the configuration of the switching sequence is lost for the complete search and must be checked /
defined.
•
Manual Search
for a fan by entry of its serial number
2. Defining configuration of the switching sequence
In the first step, the complete search sorts the switching sequence of the individual fans in the gas cooler
package in ascending order according to their serial numbers. As the fans in the gas cooler package have a
fixed (physical) position, their switching sequence (assignment to a stage) must be defined.
Example with 4 fan stages and a single-row gas cooler package:
•
Modbus address allocation is performed automatically (not configurable), the fan with the lowest serial
number always obtains the address 10 etc.
•
Switching sequence is performed automatically, the fan with the lowest address obtains the switching
sequence 1 etc.
•
The switching sequence in this case is appropriate and does not have to be adjusted.
Single-row gas cooler package
Stage 1
Stage 2
Stage 3
Stage 4
1
SN: JJWW000101
Modbus address:
10
Switching sequence:
1
2
SN: JJWW000102
Modbus address:
11
Switching sequence:
2
3
SN: JJWW000103
Modbus address:
12
Switching sequence:
3
4
SN: JJWW000104
Modbus address:
13
Switching sequence:
4
Example with 4 fan stages and a two-row gas cooler package:
•
Modbus address allocation is performed automatically (not configurable), the fan with the lowest serial
number always obtains the address 10 etc.
•
Switching sequence is performed automatically, the fan with the lowest address obtains the switching
sequence 1 etc.
•
Note: In the case of a two-row gas cooler package, the fans arranged in pairs are controlled
jointly (as "one stage").
Therefore, their switching sequence for the fan pairs must be identical and manually adjusted:
Содержание VS 3015 C
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