403 - Actual Value
This display indicates the actual discharge pressure.
404 - Speed
This display indicates the performance sum of all the oper-
ating pumps. Each pump is rated at 100% when running
full speed. For example, in a three-pump system where all
pumps are running at max. speed, Display 404 will indicate
300%.
In the same three-pump system with one pump running
at max. speed, one pump frequency-controlled to 50%, and
one pump stopped, Display 404 will indicate 150%.
405 - Set-point Max.
This display indicates the maximum set-point as set in
Display 200.
406 - Clock Program (Multiple Set-points)
This display gives an overview of the switching times set
in Display 201.
407 - On/Off Band
This display indicates the “on/off band” values set in
Display 207.
408 - System Time Constant (Reaction Time)
This display indicates the system time constant set in
Display 204.
409 - Minimum Switching Time
This display indicates the minimum switching time set in
Display 205.
410 - Pump Change (Rotation)
This display indicates whether time-dependent change has
been selected, Display 208.
[on] Time-dependent pump change is active.
[off] Time-dependent pump change is inactive.
After each pump stops, the PMU 2000 changes the starting
order of the pumps regardless of the on/off status of this
display.
411 - Time for Pump Change
This display indicates when time-dependent pump change
is initiated after the system is started (Display 209).
[00:05] (5 minutes after midnight) is the default. Be sure
to set the correct time in Display 103. Whatever the set-
ting, time-dependent rotation occurs 24 hours after the
initiation and occurs again every 24 hours thereafter unless
demand change has caused pumps to start and stop or a
fault occurs.
412 - Control Function
This display indicates the control function selected in
Display 214.
[normal] If the actual value is smaller than the set-point,
the pump performance is increased.
[invers] If the actual value is smaller than the set-point, the
pump performance will be reduced.
413 - Medium Sequence
Timing function, only available when service code is
entered.
414 - Pre-pressure Measuring
This display indicates the following as set in Display 216.
[on] Pre-pressure measuring is active.
[off] Pre-pressure measuring is inactive.
415 - External Set-point Influence
This display indicates the external influence selected in
Display 217.
416 - Pressure Sensor Measuring Range, Input 1, Discharge
Pressure
This display indicates the measuring unit of the discharge
pressure sensor, Display 219.
417 - Pressure Sensor Measuring Range, Input 2, Inlet
Pressure
This display indicates the measuring unit of the inlet pres-
sure sensor, Display 220.
418 - Pre-Pressure Measuring
[on] or [off]. Corresponds to Display 216.
419 - Input 4
This display indicates the function of PMU 2000 digital
Input 4, Display 222.
420 - Input 4 (Value)
This display indicates the values set in the following dis-
plays. Display 222 must be set to “reduced op.” in order for
Displays 224 and 225 to show.
[reduced op] Display 224 [set-point max1] Display 225
421 - Stand-by Pump
This display indicates the number of stand-by pumps,
Display 226.
422 - Pump Priority
Indicates the operating priority of the pumps, Display 227.
423 - Max. Limit
Indicates the “maximum limit,” Display 228. If this limit
is exceeded for 0.5 second, the pumps will stop and a fault
is indicated. If the pressure drops below the “maximum
limit” for more than five seconds, the system will restart
automatically.
424 - Min. Limit
Indicates the discharge “minimum limit,” Display 229. If
the discharge falls below this limit, a fault occurs.
If [off] is selected in Display 230, the pumps are switched
off as well as a fault indicated.
31
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