Chapter 3 - Programming Features
FP5/GP5 Operation
· Terminal FV Gain (n048, Terminal FV Gain)
The analog input voltage value for the maximum output frequency
(n011) can be set in units of 1%, from 0 to 200%.
Factory setting: 100%
· Terminal FV Bias (n049, Terminal FV Bias)
The frequency reference that is generated when the analog input is 0V can be set in units of 1%, from -100% to 100%. (n011: maximum output frequency = 100%)
Factory setting: 0%
· Terminal FI Gain (n050, Terminal FI Gain)
The analog input current value for the maximum output frequency
(n011) can be set in units of 1%, from 0 to 200%.
Factory setting: 100%
· Terminal FI Bias (n051, Terminal FI Bias)
The frequency reference that is generated when the analog input is 4mA can be set in units of 1%, from -100% to 100%. (n011: maximum output frequency = 100%)
Factory setting: 0%
· Examples
To operate the inverter with a frequency reference of 0% to 100% at a 0 to 5V input:
Max. Output
Frequency (100%)
0%
Figure 30 Frequency Signal Adjustment Example - 0 to 5V input
Gain: Parameter n048 = “200”
Bias: Parameter n049 = “0”
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To operate the inverter with a frequency reference of 50% to 100% at a
0 to 10V input:
Max. Output
Frequency (100%)
50%
0V 10V
Figure 31 Frequency Signal Adjustment Example - 0 to 10V input
Gain: Parameter n048 = “100”
Bias: Parameter n049 = “50”
Jog Operation
Multi-function inputs (Terminals S2 to S6) can be programmed to function as a jog reference selection. Operation can then be enabled at the jog frequency reference set in parameter n030 by activating this input. A
“RUN” command must also be given to start the inverter. When multistep speed references 1 or 2 are input simultaneously with the jog frequency reference, the jog frequency reference has priority.
Name Parameter No. Setting
Jog frequency reference n030 6.0Hz (Factory default)
Multi-function contact input selection (S2 to S6) n036, n037, n038, n039, n040
Set to “Jog Command” for any parameter.
Jump Frequencies (n062, Jump Freq 1; n063, Jump Freq 2, n064, Jump Bandwidth)
This function enables the “jumping” of critical frequencies so that systems can operate without excessive vibration or noise. Setting the value to
0.0Hz disables this function.
Set jump frequency 1 or 2 such that n062
≤
n063. If this condition is not satisfied, the inverter displays the parameter setting error “OPE6”.
Output Frequency n063 n062 n064 n064 Frequency
Reference
Figure 32 Jump Frequencies
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FP5/GP5 Operation
MODBUS Communication
The FP5/GP5 can perform serial transmission by using a programmable controller (PLC) and MODBUS communication. MODBUS is composed of one master PLC and 1 to 31 (maximum) slave inverters. In signal transmission between master and slave units, the master unit always starts transmission and the slave units respond to it.
The master unit performs signal transmission with one slave unit at a time. Hence, different address numbers must be assigned to each slave unit in advance and the master unit specifies a number to perform signal transmission. The slave unit which receives the command from the master unit executes the function and returns the response to the master unit.
Communication Specifications
· Interface: RS-485, RS-422 (communication interface card SI-K2/P must be mounted.)
· Synchronization: Asynchronous
· Transmission parameter: Baud rate: selectable from 2400, 4800,
9600 BPS (parameter n105)
Data length: fixed at 8 bits
Parity: parity/no parity, even/odd selectable (parameter n106)
Stop bit: fixed at 1 bit
· Protocol: In accordance with MODBUS
· Maximum number of units to be connected: 31 units (when RS-485 is used)
Data to be Sent/Received by Communication
Data to be sent/received by communication are run commands, frequency reference, fault contents, inverter status and parameter setting/reading.
· Operation Mode Selection (n002, Oper Mode Select)
Select the run command and frequency reference input method in parameter n002. To provide a run command and/or frequency reference by communication, set this parameter to a selection that contains
“COM” for SEQ and/or REF. Regardless of this selection, monitoring of running status, parameter setting/reading, fault reset and multi-function input commands from the PLC are possible. The multi-function input command becomes “OR” with the command input from control circuit terminals S2 to S6.
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· MODBUS Frequency Reference Unit (n103, MODBUS Fref Unit)
The frequency reference units from the PLC and in the frequency reference and output frequency monitors (by communication) are set with parameter n103. The output frequency resolution of the FP5/GP5 is 0.1Hz. Even if the frequency reference unit is changed to 0.01Hz in parameter n103, the value in the hundredth digit of the received frequency reference is rounded off internally. When 30,000/100% in units of 0.1% is selected, the value is rounded off in the same way.
· MODBUS Slave Address (n104, MODBUS Address)
Sets the slave address number. It is necessary to set the address number so that it will not overlap with the address number of another slave unit connected on the same transmission line.
Note: To change the values set in parameters n104 to n106 and enable new settings, it is necessary to cycle power after entering the desired values.
Motor Overload Detection
The FP5/GP5 protects against motor overload with a UL-recognized, built-in electronic thermal overload relay function.
· Motor Rated Current (n033, Motor Rated FLA)
Set to the rated current value shown on the motor nameplate.
Note: setting to 0.0A disables the motor overload protection function.
· Motor overload protection selection (n034, Motor OL Sel)
LED Setting LCD Setting Electronic Thermal Characteristics
0 Disabled Protection disabled
1 STD Motor / 8 min Applied to general-purpose motor, standard rating (Class 20 overload)
2 STD Motor / 5 min Applied to general-purpose motor, short time rating (Class 10 overload)
3 INV Motor / 8 min Applied to blower-cooled / inverter duty motor, standard rating (Class 20 overload)
4 INV Motor / 5 min Applied to blower-cooled / inverter duty motor, short time rating (Class 10 overload)
The electronic thermal overload function estimates motor temperature, based on inverter output current and time, to protect the motor from overheating. When the electronic thermal overload relay is activated, an
“oL1” error occurs, shutting OFF the inverter output and preventing excessive overheating in the motor.
When operating with one inverter connected to one motor, an external thermal relay is not needed. When operating several motors with one inverter, install a thermal relay on each motor. In this case, set parameter n034 to “Disabled”.
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