Emerson EV1000-2S0004G User Manual page 50

48 Chapter 5 Parameters
One's place: STOP/RESET key's function
It is to set the usage and function of STOP/RESET key when
you want to stop the drive.
0: effective when keypad control is selected.
1: effective for keypad, terminal and serial port control. Press
this key and the drive will stop in specified manner.
2: effective for keypad, terminal and serial port control. In
keypad control mode, press this key and the drive will stop in
specified manner. But in terminal or serial port control mode,
pressing this key will trigger E015 alarm and the drive will
coast to stop.
STOP/RESET can be used to reset a fault in all control
mode.
Ten's place: reserved
Hundred's place: lock up keypad selection
You can select to lock all or part of the keys.
0: not lock the keypad.
1: lock all keys on the keypad.
2: lock all keys on the keypad except STOP/RESET key.
3: lock all keys on the keypad except
4: lock all keys on the keypad except RUN and STOP key.
Keypad locking method: press FUNC/DATA key and PRG
key at the same time for 3 seconds.
Unlocking method: press FUNC/DATA key and hold it, press
▼ key three times (within 3 seconds) .
F9.08 Reserved
F9.09 Acc/Dec time unit
0: second
1: minute
It is valid for all acceleration or deceleration except jog and
traversing operation.
The Acc/Dec time can be as long as 60 hours.
Note
It is recommended to select Second as time unit.
F9.10 Droop control
The function applies to the occasion that many drives control
a single load for equalizing power distribution. As Figure
5-64 shows, 5 drives are driving a conveyer of 5 motors.
Conveyer
Motor
2
Drive 1
Figure 5-64 Droop Control
When some drive's load is too heavy, it will reduce output
power to shirk part of the load according to F9.10. You may
adjust the value gradually. Refer to Figure5-65 for the
relation of load and output frequency.
key.
Range: 0, 1 【0】
Range: 0.00~10.00Hz 【 0.00Hz 】
Load
3 4 5
EV1000 Series General Purpose Variable Speed Drive User Manual
Droop control
Torque
No droop control
Rated
torque
o
Synchronuous speed
Figure 5-65 Droop Control Effect
F9.11 High usage of bus voltage
When the electric network voltage is much lower (under 15%
of rated voltage) or the drive works with a heavy load for long
time, it will boost its bus voltage usage rate to increase
output voltage.
0: disabled
1: enabled
Note
If F9.11 is enabled, the output harmonic components will increase
slightly.
F9.12 Zero freq. threashold
F9.13 Zero freq. hysteresis
The above two parameters are to set zero frequency
hysteresis control.
Take analog CCI for example, see Figure5-66:
Startup process:
When the Run command is given out, only after CCI current
arrives at I and the corresponding frequency reaches fb,
b
does the drive start and accelerate to the preset frequency.
Stop:
During operation, if CCI current reduces to I
not stop until it reaches I
a
becomes fa, where fa is the threshold of zero frequency
defined by F9.12. The difference between fb and fa is zero
frequency hysteresis, defined by F9.13.
This function can realize dormancy to save energy. In
addition, the frequent start and stop at threshold frequency
can be avoided.
Speed
Range: 0, 1 【1】
Range: 0.00~650.00Hz 【0.00Hz】
Range: 0.00~650.00Hz 【0.00Hz】
, the drive will
b
and the corresponding frequency