Introduction
451 series (models 451 to 454)
Three sorts of isolated logic input are available:
• The
standard
input is suitable for all control signals for solid state contactors,
generated by the Eurotherm controllers.
• The
TTL
input, available as an option, allows greater sensitivity, without
increasing the current consumption. This input can be driven by a standard
TTL
logic.
• The
"multi-input",
available as an option, is used when several units
must be driven by the same logic signal, and with a minimum current
consumption.
The 451 series can be equipped with a partial load failure
detection.
455 series (models 455 to 458)
The input signal and thyristor firing mode configurations are
set
at order and cannot be
changed (soldered bridge configuration).
The 455 series has a "Slave" output and an
inhibition
function.
461 series (models 461 to 464)
The input signal and thyristor firing mode configurations are easy to
modify
by the user
with configuration mini-switches.
The 461 series has current limit, partial load failure
detection, gating
(except on the 461
model),
inhibition
functions and the
"Slave"
output.
1-2
451-461 User Manual
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