Insulation Resistance - Grundfos TPE Betriebshandbuch

The functions of the two indicator lights and the signal relay are as shown in the following table:
Indicator lights
Fault Operation
(red) (green)
Off Off
Permanently
Off
on
Off Flashing
Permanently
Off
on
Permanently Permanently
on on
Permanently
Flashing
on
Resetting of fault indication
A fault indication can be reset in one of the following ways:
• Briefly press the button or
change the setting of the pump.
A fault indication cannot be reset by means of
buttons have been locked.
• Switch off the power supply until the indicator lights are off.
• Switch the external start/stop input off and then on again.
• Use the R100. See section
When the R100 communicates with the pump, the red indicator
light will flash rapidly.
30
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Signal relay activated during:
Fault/Alarm,
Warning and Operating
Relubricate
C NO NC C NO NC
C NO NC
NO NC
C
C NO NC
C NO NC
C NO NC
C NO NC
C NO NC C NO NC
C NO NC
C NO NC
on the pump. This will not
or if the
8.1.3 Fault indications.
Description
Pump
Ready
running
The power supply has been switched off.
C NO NC
NO NC
C
The pump is operating.
C NO NC C NO NC
The pump has been set to stop.
C NO NC
C NO NC
The pump has stopped because of a
Fault/Alarm or is running with a Warning
or Relubricate indication.
If the pump was stopped, restarting will be
attempted (it may be necessary to restart
C NO NC C NO NC
the pump by resetting the Fault
indication).
The pump is operating, but it has or has
had a Fault/Alarm allowing the pump to
continue operation or it is operating with a
Warning or Relubricate indication.
If the cause is "sensor signal outside
signal range", the pump will continue
operating according to the max. curve and
the fault indication cannot be reset until
C NO NC C NO NC the signal is inside the signal range.
If the cause is "setpoint signal outside
signal range", the pump will continue
operating according to the min. curve and
the fault indication cannot be reset until
the signal is inside the signal range.
The pump has been set to stop, but it has
been stopped because of a Fault.
C NO NC
C NO NC

16. Insulation resistance

Up to 7.5 kW
Do not measure the insulation resistance of
Caution
motor windings or an installation incorporating
E-pumps using high voltage megging equipment,
as this may damage the built-in electronics.
11-22 kW
Do not measure the insulation resistance of an
installation incorporating E-pumps using high
voltage megging equipment, as this may damage
Caution
the built-in electronics.
The motor conductors can be disconnected
separately and the insulation resistance of the
motor windings can be tested.