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A
pplication Overview
The S350P Proportional Stage Module must be used
in conjunction with an A350 Temperature Control. The
S350P receives its power, setpoint, and sensor inputs
from the A350. The S350P adds a proportional or
proportional plus integral output to the A350 control.
The maximum number of stages that can be used in a
system varies with the type of control module (on-off,
proportional, or reset), type of stage module (on-off,
slave, or proportional), and type of power supply
(external transformer or Y350R). Use the following
table to determine the maximum number of stages that
may be used with each control module.
Table 1: Maximum S350 Stage Modules per
Control Module
Maximum
S350A or
S350C
Control
Stage
Modules
A350A,
9
A350B,
A350E,
A350R,
A350S
(using
Y350R)
A350P
4
(using
Y350R)
Any A350
9
(using
external
40 VA
transformer)
2 Add-On Modules—S350P Proportional Plus Integral Temperature Stage Module Product/Technical Bulletin
Maximum
Maximum
S350A or
S350A or
S350C
S350C
(with 1
(with 2
S350P)
S350P)
6
4
2
N/A
8
7
O
peration
IMPORTANT: Use this A350P Proportional Plus
Integral Temperature Stage Module
only as an operating control. Where
failure or malfunction of the module
could lead to personal injury or
property damage to the controlled
equipment or other property,
additional precautions must be
designed into the control system.
Incorporate and maintain other
devices, such as supervisory or alarm
systems or safety or limit controls,
intended to warn of or protect against
failure or malfunction of the module.
IMPORTANT: Utiliser ce A350P Proportional Plus
Integral Temperature Stage Module
uniquement en tant que dispositif de
contrôle de fonctionnement.
Lorsqu'une défaillance ou un
dysfonctionnement du module risque
de provoquer des blessures ou
d'endommager l'équipement contrôlé
ou un autre équipement, la conception
du système de contrôle doit intégrer
des dispositifs de protection
supplémentaires. Veiller dans ce cas
à intégrer de façon permanente
d'autres dispositifs, tels que des
systèmes de supervision ou d'alarme,
ou des dispositifs de sécurité ou de
limitation, ayant une fonction
d'avertissement ou de protection en
cas de défaillance ou de
dysfonctionnement du module.
The S350P is powered by the A350, and provides
two simultaneous analog outputs: 0 to 10 VDC and
0 to 20 milliamperes (mA). A cover-mounted,
ten segment LED bar graph indicates the percentage
of output currently in use. S350P features include:
adjustable offset
selectable Reverse Acting (RA) or Direct Acting
(DA) mode of operation
adjustable throttling range (proportional band)
adjustable minimum output
selectable integration constant
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