until SP.
can use as upper limit or
lower limit control of PV.
Actuator
Set type of actuator control signal. Select from
Pulse Length, Pulse Frequency, or Analogout.
Pulse Length /
Pulse Frequency /
Analogout
(Default: Pulse Length)
Duty
Cycle
When selecting Pulse length, the Duty Cycle
set the period of time proportion for Relay
ON/OFF.
1~1800 sec
(Default:1 sec)
Max
Frequency
When selecting pulse frequency, the Max
frequency sets the maximum frequency of
relay ON/OFF
1~150 pulse/min
(Default:60 pulse/min)
Analogout
Type
When selecting Analogout, the 0~20mA or
4~20mA current output can be selected.
0-20 mA / 4-20 mA
(Default:4-20 mA)
Expiration
Time
To set the end time. When control output value
u with 100% continual output and the set end
time, the u value will reset as 0% which the
display will shows and twinkles the alarm text
as “Expiring”. Users may enter the setup of
setting/calibration mode to reboot the PID
control function.
0~9999 min
(Default: 0 min, it means to
turn off the function)
Static
Error
Reset
To set the static error reset value. When using
proportional control alone, with the use of
Damping Time to eliminate the static error.
0~100%
(Default: 0%, it means to
turn off the function)
Damping
Time
To set the damping time. When using
proportional control alone, with the static error
reset to eliminate the static error. Damping
time has two meanings: 1.When Process
measurement value(PV) reaches SP
30%, it
starts to count the time. If within damping time
the value cannot reach SP
DB, then it reset the
control output value u to static error reset
value.
2. When Process measurement value(PV)
exceeds SP
DB range, it starts to count the
time. If within damping time the value cannot
reach SP
DB, then it reset the control output
value u to static error reset value.
0~3600 sec
(Default:60 sec)
Manual
Output
To set the actuator control signal by manual
output. Select ON, and go back to the
measurement mode. Users may adjust the
control output volume u manually or simulate
the control signal output(At the time, MTC
manual adjust function is turned off.) The
function can be only provided under “Direct”
or “Reverse” control.
On / Off
(Default:Off)
Note: When selecting ON, at the
time the control output volume u
completely proceeds output
according to user’s setting no
longer through PID control.
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