Automated Production TC4-1CH Manuel D'utilisation page 16

TC4-1CH
S
ECURITY OVERRIDES
A security override can be defined to disable the automatic positioning of
the damper in case of a sudden change in room temperature. High and
low offsets are defined on either side of the temperature set point. These
offsets define a normal range of operation within which the controller will
adjust the damper opening as a function of outside temperature.
Damper
Opening
100 %
Upper
Opening
Lower
Opening
0
Two damper openings are defined for operating the winch outside the
normal range: a lower opening when the room temperature drops be-
low the set point minus the lower offset; and an upper opening when
the room temperature climbs above the set point plus the upper offset.
When the security override is enabled, the SECURITY pilot light turns
on.
Offsets can range from 1
offsets are set to 8
within the normal range of operation, the security override is disabled
and the damper opening is adjusted according to outside temperature.
To disable the security override, the controller uses a fixed hysteresis
o
of 1.5 F (0.8
16
TC4-1CH.rev.01
Lower Security
Override
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
o
F to 40
o
F (4.4
o
C).
Hysteresis
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
LOWER
OFFSET
Set Point
o o
F (0.6
o
C). When the room temperature returns
Upper Security
Override
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
1 2 3
UPPER
OFFSET
Room Temperature
o
C to 22.2 C). Initially, both