D4 Sequence - YASKAWA E7U Programming Manual

d4 Sequence

d4-01 MOP Reference Memory
Setting
0 Disabled (factory default)
1 Enabled
The Drive offers the capacity to change the speed command much the way a Motor Operated Potentiometer (MOP) would. Using
programmed digital inputs configured as MOP Increase (H1-0x= 10) and MOP Decrease (H1-0x= 11), the Drive will increase the
speed command whenever the MOP Increase input is closed and decrease the speed command whenever the MOP Decrease is
closed. The speed command will remain constant whenever both inputs are open or closed.
Parameter d4-01 determines whether the last speed command, before the Run command was removed, is remembered even if the
power is cycled to the Drive. If d4-01= "0: Disabled", then when a new Run command is issued the Drive's speed command will
be 0 rpm. If d4-01= "1: Enabled", then the speed command will be the last commanded speed before the Run command was
removed (See Figure 34).
d4-02 Trim Control Level
Setting Range: 0 to 100% of Maximum Speed
Factory Default: 10% of Maximum Speed
Using digital inputs, the Drive can add or subtract a set percentage of the maximum output frequency (E1-04) to or from the speed
commanded by the analog input. Parameter d4-02 sets the percentage that will be used to trim the speed command. Once the
applicable digital input that is configured as either the Trim Control Increase (H1-0x= 1C) or Trim Control Decrease (H1-0x= 1D)
is re-opened, the speed will go back to the speed determined by the analog reference.
Description
Speed Command +d4-02
Drive
Output
Speed Command-d4-02
Speed Command - d4-02
Fig. 28 Trim Control Effect on Speed Command
Programming 36
+ d4-02
+d4-02 Trim Control Increase
+ d4-02
- d4-02 -d4-02 Trim Control Decrease
Speed