Instruction
iSave 21
4
180R9222 / 521B1175 / DKCFN.PI.003.L1.02 / 04.2011
The current monitoring relays constantly measure the current in an electrical wire. The current is
indirectly reflecting the torque on the electrical motor. If the measured value exceeds the adjusted
threshold value the relay sent a signal to a main switch that cut of the power to the electrical motor.
When using a current monitoring relays together with a VFD attention must be on choosing a VFD
compatible relay.
A standard thermo relay is not an acceptable protection for the overload protection of the iSave. This
is because of the slow reaction time of the relay.
Danfoss VLT302 with two iSaves
Electrical schematic diagrams according to EN60204-1
Protection by a current
monitoring relays
Summary of Contents for iSave 21
Page 5: ...User manual iSave 21 5 180R9221 521B1174 DKCFN PS 003 A1 02 1 CE Declaration of conformity...
Page 32: ...User manual iSave 21 32 180R9221 521B1174 DKCFN PS 003 A1 02...
Page 38: ...User manual iSave 21 38 180R9221 521B1174 DKCFN PS 003 A1 02...
Page 43: ...User manual iSave 21 43 180R9221 521B1174 DKCFN PS 003 A1 02 10 3 Data sheet...
Page 44: ...User manual iSave 21 44 180R9221 521B1174 DKCFN PS 003 A1 02...
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Page 59: ...User manual iSave 21 59 180R9221 521B1174 DKCFN PS 003 A1 02 10 4 iSave part list...
Page 60: ...User manual iSave 21 60 180R9221 521B1174 DKCFN PS 003 A1 02...
Page 61: ...isave danfoss com iSave 21 Parts list 180R9209 DKCFN PC 003 A2 02 Parts list...
Page 66: ...Parts list iSave 21 Parts list 6 180R9209 DKCFN PC 003 A2 02 03 2011 Exploded view Vane pump...
Page 68: ...Parts list iSave 21 Parts list 8 180R9209 DKCFN PC 003 A2 02 03 2011 Exploded view iSave...
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Page 71: ...User manual iSave 21 71 180R9221 521B1174 DKCFN PS 003 A1 02 10 5 iSave overload protection...
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