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SSI700 User Manual Description of Function Codes
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• 6: Multi-reference
In multi-reference mode, combinations of different DI terminal states correspond to
different set frequencies. The SSI700 supports a maximum of 16 speeds implemented by
16 state combinations of four DI terminals (allocated with functions 12 to 15) in Group 12.
The multiple references indicate percentages of the value of P0-10 (Maximum frequency).
If a DI terminal is used for the multi-reference function, you need to perform related setting
in group P4.
• 7: Simple PLC
When the simple programmable logic controller (PLC) mode is used as the frequency
source, the running frequency of the AC drive can be switched over among the 16
frequency references. You can set the holding time and acceleration/deceleration time of
the 16 frequency references. For details, refer to the descriptions of Group 12.
• 8: PID
The output of PID control is used as the running frequency. PID control is generally used
in on-site control, such as constant pressure control and constant tension control.
When applying PID as the frequency source, you need to set parameters of PID function
in group 10.
• 9: Communication setting
The frequency is set by means of communication.
If the AC drive is a slave in point-point communication and receives data as the frequency
source, data transmitted by the master is used as the set frequency. The data format
is -100.00% to 100.00%. 100% corresponds to the value of P0-10 (Maximum frequency).
In other conditions, data is given by the host computer through the communication
address 0x1000. The data format is -100.00% to 100.00%. 100.00% corresponds to the
value of P0-10 (Maximum frequency). The SSI700 supports four host computer
communication protocols: Modbus. They cannot be used simultaneously. If the
communication mode is used.
•
10: Potentiometer key pad
When AI is used as the frequency setting source, the
corresponding value 100% of the voltage input corresponds to the value of
P0-10 (Maximum frequency).
Property
Default Setting Range Parameter Name
Function
Code
Group P0: Standard Function Parameters
★ 1
0: Digital setting Preset P0-08,
UP/DOWN Can be modified.
(non-retentive at power failure)
1: Digital setting Preset P0-08,
UP/DOWN Can be modified.
(retentive at power failure)
2: AI1
3: AI2
4: Reserved
5: Pulse setting (DI5)
6: Multi-reference
7: Simple PLC
8: PID
9: Communication setting
Auxiliary frequency
source B selection
P0-04
When used as an independent frequency input channel (frequency source switched over
from A to B), the auxiliary frequency source B is used in the same way as the main
frequency source A (refer to P0-03).
When the auxiliary frequency source is used for operation (frequency source is "A and B
operation"), pay attention to the following aspects: