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Page 132 HydroRanger 200 – INSTRUCTION MANUAL 7ML19981FC01

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Parameters

P122 Pump Service Ratio

Selects pump usage based on the RUN time ratio rather than last used.

This parameter only relates to relays with P111 = 54 or 55.

To make this parameter useful, assign it to all of the pump relays. The number assigned to

each pump relay represents the ratio applied to decide the next pump to start or stop.

Independent Relay Failsafe (P129)

P129 Relay Failsafe

Sets the failsafe operation per relay to allow for more flexible programming.

Use this for operations independent of the Failsafe Material Level (P070).

Relay Failsafe is only available for the following relay functions (P111) and is not used for

any other relay control function.

Primary Index Relay

Values

Range: 0.000 to 9999

Preset: 20.00

Related • P111 Relay Control Function

Primary Index Relay

Values

OFF * Response governed by P071 Failsafe Material Level

HOLd For LAST KNOWN relay state retention

dE To have the relay de-energize immediately on failsafe

En To have the relay energize immediately on failsafe

Altered by • P071 Failsafe Material Level

• P070 Failsafe Timer

• P111 Relay Control Function

Notes:

• The HydroRanger 200 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 (preset)

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Siemens HydroRanger 200 Bedienerhandbuch Seite 146