Frequency Up/Down Function (Setting：28); Time Chart Of Output Frequency With The Up/Down Function; Forced Run (Setting：29) - TECO speecon 7200ma Instruction Manual

•Frequency UP/DOWN Function (Setting：28)
•The inverter can use either the digital operator or external multi-function input
terminals (terminal
downward.
•By setting the parameters of (Sn-04= 1，Sn-05= 1), firstly the run source and
frequency command is set through the control circuit terminals. Secondly, set
the parameter Sn-28 = 28 (terminal
original function is disabled). Then, terminal
and "DOWN" function to control /change the output frequency.
•Operation sequence as below:
Control circuit terminal
Control circuit terminal
Operation status
terminal or
1
terminal
7
terminal
8
Fig. 45 Time chart of output frequency with the UP/DOWN function
•Only set through parameter Sn-28
•When the frequency UP/DOWN function is being used, the output frequency
will accelerate to the lower_limit (Cn-19) if a run command is pressed.
•The output frequency held by the UP/DOWN function will be stored in memory.
This output frequency will be retained even after a power loss. When power is
back, the inverter will restart at this hold frequency if a run command is pressed
next time.
•When the UP/DOWN function and jog frequency command are both assigned to
multi-function inputs, the jog frequency command input has the highest priority.
•Forced Run (Setting：29)
•Only set through parameter Sn-28. It is for special use (smoke fan, etc.)
or
: UP function
: DOWN function
FWD REV
2
UP
DOWN
upper limit
output freq.
lower limit
D1 H
U = UP (ACC) status
D = DOWN (DEC) status
H = HOLD (Constant) status
) to change the output frequency upward or
will now have the function "UP", its
ON
OFF
ACC
(UP)
U H D H U H
U1 = bounded from upper_limit while ACC
D1 = bounded from lower_limit while DEC
86
and can be used for "UP"
OFF OFF
ON OFF
DEC Constant
(DOWN) (HOLD)
D D1 H U U1 H D D1
ON
ON
Constant
(HOLD)
H