Brochure

Page 1
SOLID STATE RELAYS IN PROFESSIONAL
FOOD EQUIPMENT
Background
In today’s hectic lifestyle, cooking and food
preparation equipment have become very
important in commercial, industrial and
residential establishments. There is an
increasing need for precise, safe and intelligent
professional food equipment.
Demanding users eat and drink food at
restaurants and cafes, equipped with the latest
machinery for cooking, warming and beverage
preparation, including mixers, convection
ovens, combi steamers, deep fat fryers, dough
divider rounders, food warming cabinets,
coffee machines, etc.
This demand has created a trend toward the
use of more accurate digital control technology,
along with compliance with related standards,
such as low EMC directives for commercial
and household use.
Solution
Sensata offers a broad range of solid state
relays and contactors that are perfectly suited
for use in the food equipment industry. In the
past, electromechanical relays (EMRs) were
used extensively in these systems due to their
lower cost, but they have been replaced in
recent years with solid state relays because of
an increased use of digital control equipment.
SSRs are well suited for use with digital control
signals because of their low input current and
higher switching speed, which is required in
most of these applications to maintain proper
temperature control. EMRs cannot keep up in
these types of applications.
SSRs have a much higher life expectancy
than EMRs and even though their initial cost
is higher, their total cost of ownership is lower
when you take into consideration the cost of
replacing EMRs.
Additionally, solid state relays have no acoustic
noise due to their lack of moving parts and
they produce less EMI noise. Sensata also
offers SSRs with a patented trigger circuit that
can reduce the switching noise generated by
the SSR to comply with levels specied by
standard IEC60947-4-3 Environment B for
low voltage domestic, commercial and light
industrial locations/installations.
APPLICATION NOTE
SSRs are well suited
for use with digital control
signals due to their low input
current and higher switching
speed, which is required
to maintain a proper
temperature control.