Continued
H. Hold Command (27): Accel/Decel Hold
By programming data "Hold Command" (" 27 ") into one of the multifunction input
parameters ( n036 thru n040), one of the multi-function input terminals (S2 thru S6)
becomes a HOLD command input. As long as the HOLD command is present, accel and
decel are in a prohibit state, and the output speed is held at the level it was at the time the
HOLD command was input. When the HOLD command is removed while the system is still
in Run condition, accel or decel will again become active to allow output to reach set speed.
If Stop is initiated while the HOLD command is present, the prohibit state is cancelled and
the system enters stop operation.
I. PID Polarity Sel ( 28 ) : PID Changeover
Programming data "PID Polarity Sel" (" 28 ") for n040 allows the PID input characteristic
changeover to function as follows:
Multi-function input: Open = As usual
Closed = Polarity of
Deviation is
changed over
5-39
5.19 MULTI-FUNCTION INPUT TERMINALS (Term. S2-S6)
GPD 506/P5
S6
S
C
FS
FV SETPOINT
FC
o o
Setpoint
PID
Fout
Feedback
–1
+
–
HOLD Function Timing
FWD RUN
HOLD CMD
SPEED REF.
OUTPUT SPEED
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