4-189
09-05: Communications Data Bits Selection
= 0: 8 bits data
= 1: 7 bits data
09-06: RS-485 communication error detection time
09-07: Stop selection of RS-485 communication failure
= 0: Deceleration to stop by deceleration time 00-15
= 1: Coast to stop
= 2: Deceleration to stop using the deceleration time of 00-26 (emergency stop time)
= 3: Continue to operate (only shows a warning message, press the stop button to stop operation)
= 4: Run the frequency command given by AI2 (After setting the Communication Error Detection Time
(09-06), when RS-485 communication error, the warning message will display, and run the
frequency given by AI2, when stop key is pressed, the inverter stops)
09-08: Comm. fault tolerance count
When the number of communication errors exceeds the value set in parameter 09-08 the inverter will
display the comm. Fault alarm.
09-09: Wait time of inverter transmission
Sets the inverter response delay time. This is the time between the controller message and the start of the
inverter response message. Refer to Fig. 4.4.67. Set the controller receive time-out to a greater value than
the wait time parameter (09-09).
09-09 setting
24 bits long
Inverter to Master
Master to Inverter
t
Command Message
Response Message
Figure 4.4.67 Communication Message Timing
Group 10: PID Parameters
10- 00
PID Target Value Source Setting
Range
【0】:
Keypad Given (for PUMP or HVAC mode)
【1】: AI1 Given
【2】: AI2 Given
【3】: Reserved
【4】: 10-02 Given
【5】: Reserved
【6】: Frequency Command (00-05)
【7】: Multi-speed Frequency Command
Operation Pressure Setting (23-02) or Target Value of Flow Meters (PUMP or HVAC function selection)
can be set as PID’s target value only when 10-00=0 and 23-00=1 or 2.
When 10-00=1 or 2, signal source proportional is corresponding to PID target via analog input terminal.
For example, 0~10V is corresponding to the target of 0~100% so given 2V is equivalent with the target
value of 20%.
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