Siemens SITRANS LUT400, Operating Instructions Manual

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A5E33329501 SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS Page 153
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2.7.1.9. OFF Setpoint Pump 2
The level at which Pump 2 turns OFF, defined in 2.1.1. Units.
This parameter is set according to level even when another reading, such
as volume, is shown on the LCD.
2.7.1.10. Service Ratio Pump 1
Selects pump usage based on the RUN time ratio rather than last used.
(See 3.2.7.1.Run Time Relay 2.)
This parameter only relates to relays with Pump Control Mode (2.7.1.4.) set
to Service Ratio Duty Assist or Service Ratio Duty Backup.
The number assigned to each pump relay represents the ratio applied to
decide the next pump to start or stop.
2.7.1.11. Service Ratio Pump 2
Selects pump usage based on the RUN time ratio rather than last used.
(See 3.2.7.2.Run Time Relay 3.)
This parameter only relates to relays with Pump Control Mode (2.7.1.4.) set
to Service Ratio Duty Assist or Service Ratio Duty Backup.
The number assigned to each pump relay represents the ratio applied to
decide the next pump to start or stop.
Values
Range: 0.000 to 99999.000
Default: 0.000
Values
Range: 0 to 255
Default: 1
Notes:
• The SITRANS LUT400 will not sacrifice other pumping strategies to
ensure that the ratio is held true.
• If the pump relays are set to the same value then the ratio equals 1:1
and all pumps are used equally (default).
Values
Range: 0 to 255
Default: 1
Notes:
• The SITRANS LUT400 will not sacrifice other pumping strategies to
ensure that the ratio is held true.
• If the pump relays are set to the same value then the ratio equals 1:1
and all pumps are used equally (default).