Mitsubishi PBV20N2 Service Manual page 102

© Mitsubishi Forklift Trucks 2013. All © Mitsubishi Forklift Trucks 2013. All rights rights reserved. reserved. Revision: B Revision: B
PBV20N2 PBV20N2
Figure 57. Contactor Figure 57. Contactor
A contactor is an A contactor is an electrically-controlle electrically-controlled switch used fo
to a relay, except with higher current ratings. A contactor is controlled by a circuit, which to a relay, except with higher current ratings. A contactor is controlled by a circuit, which
has a much lower power level than the switched circuit. has a much lower power level
Contactor functionality check: Contactor functionality check:
1. 1. Measure the Measure the ohms ohms between the between the coil A1
The ohms value should be ~55 Ω. The ohms value should be ~55
If the ohms value is ~0 Ω or ~∞ If the ohms value is ~0
2. 2. Measure the Measure the ohms ohms between between the
The ohms value should be ~ The ohms value should be ~ ∞ ∞ Ω Ω . .
If the value does not match the above, replace the contactor. If the value does not match the above, replace the contactor.
3. 3. Supply + Supply +24 Vdc 24 Vdc between between the A1
4. 4. Measure b Measure between th etween the main e main contacts 1
If the contacts are not If the contacts are not closed, they are stuck together. In that case,
contactor. contactor.
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Document ID: 615023 Document ID: 615023
d switch used for switching a po
than the switched circuit.
coil A1 – – A2 A2 terminals terminals. .
Ω.
Ω or ~∞ Ω Ω , replace the contactor. , replace the contactor.
the main main switchin switching g contacts 1-2. contacts 1-2.
the A1 (+) and (+) and A2 (-) termi A2 (-) terminals.
contacts 1 – 2 that – 2 that the contacts the contacts are closed
closed, they are stuck together. In that case, replace the
101 (244) 101 (244)
Service Manual Service Manual
r switching a power circuit, similar wer circuit, similar
nals.
are closed. .
replace the