Micromod Micro-DCI: 53SL6000 Single Loop Controller - Manual (Page 61)

Table 7-1. Control Signal Descriptions
Signal Description
Aut Auto Status
For SnGL, cASc, L.LiM, and h.LiM control
schemes, Aut selects the PID algorithm
result instead of the output push buttons
to be directed to the control scheme’s
primary output (out).
In the in.Ld scheme, the B input scaled by
conF-cn.1(cn.2)-K1 and conF-cn.1(cn.2)-
b1 is used in place of the PID algorithm
result as the primary output (out).
For the Aut signal to become active, the
H input must be a logical one value and
the A/M push button activated. When
the Aut signal is active, the automatic
indicator LED lights and the manual
indicator LED is off.
When the H input is not a logical one,
and the A/M push button is activated,
the automatic indicator LED will flash
while the manual indicator LED will
remain lit.
Aut.2 Auto Status (Loop 2)
For cASc, L.LiM, and h.LiM control
schemes, Aut.2 selects the loop 2 PID
algorithm result instead of the loop 2
output push buttons to be used as the
loop 2 output which is applied to loop 1.
The Aut.2 signal is available as a digital
output from the control scheme block.
The Aut.2 signal is activated by the loop 2
A/M push button. When Aut.2 is active,
the loop 2 automatic indicator LED and
the manual indicator LED is off.
oVtS Output Track Status
For all control schemes, oVtS selects the D
input value to be directed to the control
scheme’s primary analog output (out),
thus bypassing the PID and output push
button values.
The output slew rate (oSr), and when
hard manual limiting is selected (hML),
the output high (oh) and output low (oL)
limit parameters are applied.
When the oVtS signal is active, it is
indicated with a flashing manual LED.
The oVtS signal is also available as a
digital output from the control scheme
block. The oVtS signal is simply the
inverse value of the control scheme K
input.
Table 7-1. Control Signal Descriptions
Signal Description
oVtS.2 Output Track Status (Loop 2)
For the cASc control scheme, oVtS.2
forces the loop 2 (primary) output to
match the loop 1 (secondary) setpoint
whenever loop 2 is not controlling the
setpoint of loop 1. This provides for
bumpless transfer from local or setpoint
tracking to remote setpoint (cascade)
operation.
When the oVtS.2 signal is active, it is
indicated with a flashing loop 2 manual
LED.
oVtS.2 does not apply to other control
schemes and is forced to an inactive
value.
rMt Remote Setpoint Status
Remote setpoint status selects the
setpoint from a source other than the
setpoint push buttons. For the SnGL
control scheme, this source is the B input.
For the cASc control scheme, the source
is the output of loop 2. For the L.Lim and
h.LiM control schemes, the source is the
conF-cn.1-bi parameter (conF-cn.1-K1 =
0.0), which can be thought of as a fixed
secondary setpoint.
The rMt signal is available as a digital
output from the control scheme block.
For the rMt signal to become active, the J
input must be a logical one value and
the R/L push button activated (in remote -
R). When the rMt signal is active, the
remote indicator LED lights and the local
indicator LED is off.
When the J input is not a logical one and
the A/M push button is activated, the
remote indicator LED will flash and the
manual indicator will remain lit.
Section 7. Control Scheme Block 53SL6000 Instruction Manual
7-3