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9.4 Menu 4. INSTALLATION
In this menu, it is possible to set a number of operat-
ing data and thus match the MP 204 to the actual
installation.
The installation values should not be changed unless
the pump has stopped.
9.4.1 Supply mains
Set the supply mains to which the MP 204 is con-
nected:
• 3 phases (non-earthed) (factory setting)
• 3 phases w. FE (functional earth)
• 1 phase.
9.4.2 Trip class
Line 1: Select IEC trip class (1 to 45).
If manual indication of trip delay in the case of over-
load is required, select trip class "P".
Factory setting:
• Cls (trip class): P.
Line 2: Select trip delay.
Factory setting:
• Dly (trip delay): 10.0 s.
9.4.3 Trip delay
Set the trip delay before the MP 204 trips.
Note: This does not apply to overload. For tripping
due to overload, see the curves, pages 31 and 32.
Factory setting:
•5 s.
9.4.4 External current transformers
Set the external current transformer factor.
If no external current transformer is used, the factor
is 1.
Factory setting:
•1.
Note: Set the actual factor.
Example:
A current transformer with a 200:5 ratio is used and
five windings through the MP 204 are made, as
shown in fig. 9.
Note: The above table only applies to Grundfos cur-
rent transformers, connected as shown in figs. 9
and 10.
9.4.5 Power-on delay
Number of seconds elapsing from the moment volt-
age is applied to the MP 204 until the activation of
the trip relay (terminals 95-96) and signal relay (ter-
minals 97-98).
Factory setting:
•5 s.
Note: If the MP 204 and the contactor are mounted
as shown in figs. 8 and 9, the motor cannot start dur-
ing this delay.
Grundfos current
transformers
Set CT factor
200:5 8
300:5 12
500:5 20
750:5 30
1000:5 40
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