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146
Functional description
CG Drives & Automation 01-7491-01r0
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 transition speed should be used.
•
If the additional pump has 'fast' start/stop dynamics,
then a lower transition speed should be used.
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.
Fig. 125 Transition speed stop
Reset Run Times 1-6 [39H1] to [39M1]
Pump Status [39N]
Number backup/reserve [39P]
Sets the number of pumps used for backup/reserve which in
normal conditions can not be selected. This function can be
used for increasing redundancy in the pump system by
having pumps in reserve that can be activated when some
pumps indicate fault or are shut off for maintenance.
39G
TransS Stop
Default:
60%
Range:
0-100% of total min speed to max speed
NOTE: If set to 0 %, the transition speed when
stopping pumps, is ignored and no speed adaption is
made.
I.e. the slave pump is stopped directly and speed of
the master pump is continued.
Speed
Max
Trans
Actual
Min
Actual shut down of pump
Master pump
Switch off procedure starts
Additional pump
Flow/Pressure
39H
Run Time 1
Unit:
h:mm:ss (hours:minutes:seconds)
Range:
0:00:00–262143:59:59
39H1
Rst Run Tm1
Default:
No
No
0
Yes
1
39N
Pump 123456
Indication
Description
C
Control, master pump, only when alternating
master is used
D
Direct control
O
Pump is off
E
Pump error
39P
No of Backup
Default:
0
Range:
0-3
Содержание FDU Series
Страница 1: ...Emotron FDU 2 1 AC drive Instruction manual English Valid from software version 5 00...
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Страница 10: ...6 CG Drives Automation 01 7491 01r0...
Страница 50: ...46 Installation CG Drives Automation 01 7491 01r0...
Страница 60: ...56 Control Connections CG Drives Automation 01 7491 01r0...
Страница 64: ...60 Getting Started CG Drives Automation 01 7491 01r0...
Страница 84: ...80 EMC and standards CG Drives Automation 01 7491 01r0...
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Страница 196: ...192 CG Drives Automation 01 7491 01r0...
Страница 204: ...200 Troubleshooting Diagnoses and Maintenance CG Drives Automation 01 7491 01r0...
Страница 219: ...CG Drives Automation 01 7491 01r0 Technical Data 215...
Страница 254: ...250 Menu List CG Drives Automation 01 7491 01r0...
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