NEMA 4X instrument Front
531 - Automatic PID backup of critical loops
532 - Automatic manual backup of critical loops
Not a point of failure!
Full indication and alarm capability
Available in new Field Mount case
Powers
™ has taken a step ahead in the control world by
providing a simple and cost effective way to provide automatic PID or Auto/Manual backup control of critical loops controlled
by PLC, DCS, or PC systems. Not a point of failure,
Powers™
offers a wide range of programmable functions to tailor
the response to lost or returning host signal to your
application's specific needs.
The Powers
™ 531 provides automatic PID control backup of
your critical loops. The host 4-20 mA control signal passes
through the 531 without degradation. Upon loss of the
control signal, the 531 resumes PID control based on the
last known good control signal. Upon control signal return,
the 531 will provide a bumpless transfer from the existing
signal to the new control signal. As an alternative, the
return to the HOST control signal can be programmed to
take place only by operator intervention. This allows
verification of the control signal's propriety.
The Powers
™ 532 Auto/Manual station also detects lost signal
but substitutes a fixed signal based on the last known
good control signal or a preset control signal. The operator
may then manually adjust the Auto/Manual station's output.
The return of the HOSTS control signal is handle in the
same manner as the 531.
Powers™
now offers cost effective protection from system
failure
531
Spec Sheet
