Omron SX-F, Инструкция по эксплуатации

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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
Transition Speed Stop [39G]
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
39F Settle Stop
Stp
0s
39G TransS Stop
Stp
60%
A