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169
Process and Application Parameters [300]
Section 11-3
stop method. This could cause unnecessary starting and stopping of addi-
tional pumps.
During the Settle stop:
•
PID controller is off.
•
the speed is kept at a fixed level after stopping a pump
Communication information
The transition speed stop is used to minimize a flow/pressure overshoot when
shutting down an additional pump. The setting depends on the dynamics of
both the master drive and the additional drives.
In general:
•
If the additional pump has 'slow' start/stop dynamics, then a higher transi-
tion speed should be used.
•
If the additional pump has 'fast' start/stop dynamics, then a lower transition
speed should be used.
Communication information
Example
Max Speed = 1500 rpm
Min Speed = 200 rpm
TransS Start = 60%
When less additional pumps are needed, the speed will be controlled up to
min speed + (60% x (1500 rpm - 200 rpm)) = 200 rpm + 780 rpm = 980 rpm.
When this speed is reached, the additional pump with the highest run time
hours will be switched off.
Default:
0 s
Range:
0–999 s
Modbus Instance no/
DeviceNet no:
43175
Profibus slot/index
169/79
EtherCAT index (hex)
4c67
Fieldbus format
Long, 1=1 s
Modbus format
EInt
Default:
60%
Range:
0-100% of total min speed to max speed
Modbus Instance no/
DeviceNet no:
43176
Profibus slot/index
169/80
EtherCAT index (hex)
4c68
Fieldbus format
Long, 1=1%
Modbus format
EInt
A
0s
60%
A
Содержание SX-F
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Страница 14: ...6 Table of contents...
Страница 20: ...12 Glossary Section 1 6...
Страница 32: ...24 Cabinet mounting Section 2 3...
Страница 58: ...50 Connecting options Section 5 6...
Страница 72: ...64 Load Monitor and Process Protection 400 Section 7 5...
Страница 74: ...66 EMC standards Section 8 1...
Страница 266: ...258 System Data 900 Section 11 9...
Страница 274: ...266 Maintenance Section 12 3...
Страница 284: ...276 Liquid cooling Section 13 12...