SF2-DC9V Просмотр технического описания (PDF) - Matsushita Electric Works
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SF2-DC9V
Matsushita Electric Works
SF2-DC9V Datasheet PDF : 7 Pages
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SF
2) 3a1b Type
Form “b” Contact Weld
If the form “b” contact (No. 3) welds, the armature becomes non-operational, the contact gaps at the three form “a” contacts are
maintained at greater than 0.5 mm .020 inch. Reliable isolation is thus ensured
No.4
No.1
No.3
No.2
Non-energized
No.4
No.1 If the No. 3 contact welds.
Each of the two form “a” contacts (Nos. 1, 2, and
4) maintain a gap of greater than 0.5 mm .020
inch.
No.3
No.2
Energized (when no. 3 contact is welded)
Form “a” Contact Weld
When the form “a” contacts (nos. 1, 2, and 4) weld, the armature remains in a non-returned state and the contact gap at the single
form “b” contact is maintained at greater than 0.5 mm .020 inch. Reliable isolation is thus ensured.
No.4
No.1
No.4
No.1 If the No. 2 contact welds.
The single form “b” contact (No. 3) maintains a
gap of greater than 0.5 mm .020 inch.
No.3
No.2
No.3
No.2
Energized
Non-energized (when no. 2 contact is welded)
Contact Operation Table
The table below shows the state of the other contacts when the current through the welded form “a” contact is 0 V and the rated volt-
age is applied through the form “b” contact.
No.4
No.1
No.3
No.2
Contact No. No.1 No.2 No.3 No.4
Terminal No. 11–12 7–8 5–6 9–10
Contact No.
Contact No.
1
Welded 2
terminal
No.
3
4
State of other contacts
1
2
3
4
>0.5
>0.5
>0.5 >0.5
>0.5
>0.5
>0.5: contact gap is kept at min. 0.5 mm .020 inch
Empty cells: either closed or open
Note: Contact gaps are shown at the initial state.
If the contacts change state owing to loading/breaking
it is necessary to check the actual loading.
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