Panasonic is part of a large worldwide groupselling relays and associated switching products under different brand names in different territories.The conditions of use in some territories may differ from those customary in Europe. In particular there are often major differences in regard to national and international specifications, such as UL, CSA, VDE, SEV, EVE, SEMKO, etc. Thus, when considering contact loads as stated in this catalogue (e.g. 10 A, 30 VDC for the SP relay) its hould be understood that these values are not necessarily an absolute maximum but tested ratings. Mostly the stated value has been tested for a certain life expectancy as stated by the manufacturer or the respective test house. Thus, under different conditions, the stated “maximum” may, in practice, be safely exceeded.
5mm.
NC contacts have contact
gap approx.
5 16
6 15
Coil energized. 1.
NC contacts closed.SFN4D
APPLICATION NOTES
The SFN4D Safety Relay
NC contact 5
Sub card 1
NO contact 7
Sub card 2
NO contact 9-
Armature
NO contact 12-11
Main card
NO contact 14-13
NC contact 16-15
Rem ark:
O nly 5-6 onitors
all contacts!
' 9
12 16
n
11
13 15
Legend for interpreting contact conditions
Contact (Normally Closed) (Normally Open)
Condition Closed Fully open Open Open closed Closed Fully open Open Open closed
Symbol
f
L
Î
L
I
L
f
|
i
Î
1
t
!
1
Contact gap 0
Maximum
(~1.
NO contacts closed.
Armature energized
position. 1.5mm)
>0.5mm.5mm
(forcibly guided)
Not defined
The SFN4D under normal operating conditions
Condition Illustration Relay State Condition Contacts
Coil deenergized.
Armature deenergized
position.
NO contacts have contact
gap approx.
5 16
6 15
5 7
6
588 61408 sfn4d: 130312D
.5mm
(forcibly guided)
Not defined 0
Maximum
(~1.5mm)
>0
