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參數(shù)資料
| 型號： | SF3-DC5V |
| 英文描述： | POLARISED, MONOSTABLE SAFETY RELAY with (mechanical linked) forced contacts operation |
| 中文描述： | 極化，單穩(wěn)態(tài)與安全繼電器（機(jī)械連接）強(qiáng)迫接觸行動 |
| 文件頁數(shù)： | 7/7頁 |
| 文件大?。?/td> | 338K |
| 代理商： | SF3-DC5V |
9/1/2000
SF
No.1
No.2
No.3
No.4
No.8
No.7
No.6
No.5
Contact No.
Terminal No.
No.1 No.2 No.3 No.4
13–14 5–6
9–10 17–18
No.5 No.6 No.7 No.8
19–20 11–12 7–8 15–16
State of other contacts
3
4
>0.5
≠
>0.5
>0.5
>0.5
>0.5
≠
>0.5
>0.5
≠
>0.5
1
2
5
6
≠
7
8
≠
Welded
terminal
No.
1
2
3
4
5
6
7
8
>0.5
>0.5
>0.5
>0.5
>0.5
>0.5
>0.5
>0.5
≠
>0.5
>0.5
>0.5
>0.5
>0.5
≠
≠
≠
≠
>0.5
>0.5
>0.5
>0.5
>0.5
>0.5
>0.5
>0.5
>0.5
>0.5
≠
≠
>0.5
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.
>0.5: contact gap
is kept at min. 0.5
mm
.020 inch
≠
: contact closed
Empty cells: either
closed or open
Contact No.
Contact No.
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.
Contact Operation Table
If the No. 2 contact welds.
Each of the four form "a" contacts (Nos. 1, 3, 5,
and 7) maintains a gap of greater than 0.5 mm
.020 inch
.
No.1
No.2
No.3
No.4
No.8
No.7
No.6
No.5
Non-energized
No.1
No.2
No.3
No.4
No.8
No.7
No.6
No.5
Energized (when no. 2 contact is welded)
3) 4a4b Type
If the internal contacts (nos. 2, 3, 6, and 7) weld, the armature becomes non-operational and the contact gaps of each of the four form
“a” contacts are maintained at greater than 0.5 mm
.020 inch
. Reliable isolation is thus ensured.
Internal Contacts Weld
If the external contacts (nos. 1, 4, 5, and 8) weld, gaps of greater than 0.5 mm
.020 inch
are maintained between adjacent contacts
and the coil returns to an non-energized state.
External Contacts Weld
If external connections are made in series.
Even if one of the contacts welds, because the
other contacts operate independently, the contact
gaps are maintained at greater than 0.5 mm
.020
inch
.
Energized
Contact gap
min 0.5 mm
.020 inch
Weld
Non-energized
If the No. 1 contact welds.
The adjacent No. 2 contact maintains a gap of
greater than 0.5 mm
.020 inch
. The other con-
tacts, because the coil is not energized, return to
their normal return state; each of form “a” con-
tacts (nos. 3, 5, and 7) maintains a contact gap of
greater than 0.5 mm
.020 inch
; each of the form
“b” contacts (nos. 4, 6, and 8) return to a closed
state.
No.1
No.2
No.3
No.4
No.8
No.7
No.6
No.5
Energized
No.1
No.2
No.3
No.4
No.8
No.7
No.6
No.5
Non-energized (when no. 1 contact is welded)
For Cautions for Use, see Relay Technical Information (Page 48 to 76).
All Rights Reserved, Copyright Matsushita Electric Works, Ltd.
Go To Online Catalog
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