參數(shù)資料
型號(hào): SF4
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(dòng)
文件頁數(shù): 6/7頁
文件大?。?/td> 338K
代理商: SF4
263
SF
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
No.4
No.3
No.1
No.2
Contact No.
Terminal No.
No.1
11–12
No.2
7–8
No.3
5–6
No.4
9–10
State of other contacts
1
2
3
4
Welded
terminal
No.
1
2
3
4
>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
Empty cells: either closed or open
Contact No.
Contact No.
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.4
No.3
No.1
No.2
Non-energized
No.4
No.3
No.1
No.2
Energized (when no. 3 contact is welded)
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.
Form “a” Contact Weld
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.4
No.3
No.1
No.2
Energized
No.4
No.3
No.1
No.2
Non-energized (when no. 2 contact is welded)
2) 3a1b Type
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
Form “b” Contact Weld
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