Siemens HydroRanger 200 HMI Operating Instructions Manual page 161

2.8.1.12. Service Ratio
2.8.2. Modifiers
Provides alternate ways of starting the pumps in the pump group.
2.8.2.1. Relay Selector
2.8.2.2. Pump Group
A5E36281317
closed). This parameter allows the reversal of the operation so that
relay contacts can be Normally Closed or Normally Open.
Relay Logic
is preset to Positive logic.
Negative Logic
2.8. 1 . 1 1. Relay Logic
When
indexed relay is reversed from normal.
Selects pump usage based on the RUN time ratio rather than
Last used.
Relay
Index
Range: 0.000 to 9999
Values
Preset: 20.000
2.8. 1 .4. Relay Function
Related
This parameter only applies to relays with
Service Ratio Duty Assist or Service Ratio Duty Backup.
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.
Notes:
• The HydroRanger 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).
Sets the relay index for all parameters applicable to this sub-menu.
Organizes pumps into groups, for multiple pump rotations on one
transducer.
Relay
Index
*Group 1
Options
Group 2
2.8. 1 .4. Relay Function
Alters
nate Duty Assist or Alternate Duty Backup
This feature groups pumps (Relay Points 1 - 6) into Groups 1 or 2. It is
applied to pump rotation and occurs independently within each
group.
HydroRanger 200 HMI – OPERATING INSTRUCTIONS
= Negative logic, the operation for the
2.8. 1 .4. Relay Function
2.8. 1 .4. Relay Function
, when
2.8.1. 1 1.
=
= Alter-
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