6. Description of Parameters
- 129 -
6
Function Code Parameter Name Setting Range Default
FA-25
PID integral property
Whether to stop integral
operation when PID output
reaches the limit
0: Continue integral operation
1: Stop integral operation
Integral separation
0: Disabled
1: Enabled
00
FA-25 determines whether to enable integral separation function and whether to stop
integral operation when PID output reaches limit.
If integral separation is enabled, when a DI set for function 38 “PID integral disabled” is
on, the integral operation becomes disabled. In this case, only the P gain and derivative
time take effect.
If integral separation is disabled, no matter whether the DI set for function 38 "PID integral
disabled" is on, integral separation is inactive.
Function Code Parameter Name Setting Range Default
FA-26
Detection level of PID feedback
loss
0.0%: No detection
0.1% to 100.0%
0.0%
FA-27
Detection time of PID feedback
loss
0.0s to 20.0s 0.0s
)$DQG)$GH¿QHWKH3,'IHHGEDFNORVVGHWHFWLRQIXQFWLRQ:KHQ3,'IHHGEDFNLV
smaller than the value set in FA-26 for time set in FA-27, AC drive detects Err31 and acts
as selected in ten thousands position in F9-49.
Function Code Parameter Name Setting Range Default
FA-28
Selection of PID operation at
stop
0: Disabled
1: Enabled
0
FA-28: This function parameter determines whether to continue PID operation when the
AC drive stops.
Ƶ
Serial Comms.
We have the serial communications options, Modbus, Profibus-DP, CANlink and
CANopen.
F0-28 has to be set correctly to engage the selected serial communication card if Modbus,
3UR¿EXV'3RU&$1RSHQLVVHOHFWHG)QHHGQRWEHVHWLI&$1OLQNLVVHOHFWHG
Function Code Parameter Name Setting Range Default
F0-28
Serial port
communication
protocol
0: Modbus protocol
1: PROFIBUS-DP protocol or CANopen
protocol
0
When the AC drive is controlled via serial communication, the host computer must send
write command to the AC drive. The below Figure 6-26 uses the Modbus protocol to
control frequency reference.
To Next Page
Loading...
