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.
General Application Guidelines
[4] PRECAUTIONS REGARDING LATCHING RELAYS
Latching relays are shipped from the
factory the reset state. DS4candSTrelaysareconstructed sothat
the set coil and reset coil are separated for
high insulation resistance.), connect diode to
the set coil reset coil series. another
electrom agnetic relay coil, motor,
transformer, etc.
(a) Parallel connection set coils
(c) Parallel connection set and reset coils
Figure 16
(b) Parallel connection reset coils
(d) Circuit with inductive load parallel with
the set coil reset coil
16 ds_x61_en_relay_technical_information_091112D
.
Connect diode shown since
latching may compromised when
the relay used the following
circuits.
• Two Coil Latch Induction Voltage
Each coil 2-coil latch relay wound
with set coil and reset coil the
same iron cores.
As guide, make the minimum pulse
width order set reset latching
relay least tim the set tim reset
tim each product and apply a
rectangular-wave rated voltage.
Figure (d)
Use diode having ample margin of
safety for repeated reverse voltage
and peak reverse voltage applications
and having average rectified current
greater than equal the coil current. Figure (a), (b)
- Also, the set coil relay and the
reset coil another relay are
connected parallel, connect a
diode the coils series.
Avoid applications which conditions
include frequent surges the power
supply. DSP, TQ, Srelaysare not applicable dueto
polarity.
1c —
DS 16
4c
*
NC
Flat 6
Slim 4
ST
*
SP 4
Notes:
1.
Avoid impressing voltages the set
coil and reset coil the same time. shock the
relay during shipping installation
may cause change the set state. Please inquire if
you cannot obtain pulse width at
least tim the set (reset) time. This helps keep the insulation
high between the two winding. Figure 16
(c)
- the set coil reset coil be
connected parallel with an
inductive load (e.
Relay Type Term inal Nos.
Avoid using the following circuit since
self-excitation the contacts will inhibit
the normal keep state
In the 2-coil latching type circuit shown
below, one term inal one end the set
coil and one term inal one end the
reset coil are connected common and
voltages the same polarity are applied
to the other side for the set and reset
operations.
- set coils reset coils are be
connected together parallel,
connect diode series each
coil. this type circuit, short 2
term inals the relay noted the
table.g. Accordingly, induction
voltage generated the reverse side
coil when voltage applied and shut off
to each coil. Also,
please inquire regarding capacitor drive. Also,
please verify operation.
2.
Therefore, recommended that the
relay used circuit which
initializes the relay the required state
(set reset) henever the power is
turned on. Although the ount of
induction voltage about the same as
the rated relay voltage, you must be
careful the reverse bias voltage when
driving transistors
