Omron VARISPEED F7 User Manual

6-3
6
Setting Precautions
C6-01 (Heavy/Normal Duty Selection)
The inverter supplies Heavy/Normal Duty modes Heavy Duty, Normal Duty 1 and Normal Duty 2. The setting
ranges and factory settings of some parameters change with the setting of C6-01. See page 5-81, Parameter
Initial Values that Change With the Setting of C6-01 and page 5-82, Parameter Setting Ranges that Change
With the Setting of C6-01.
The table below shows the main differences of the three modes.
Carrier Frequency Selection
When selecting the carrier frequency, observe the following precautions:
• Adjust the carrier frequency according to the cases shown below.
• If the wiring distance between Inverter and motor is long: Set the carrier frequency low. (Use the fol-
lowing values as guidelines.
• If speed and torque vary at low speeds: Lower the carrier frequency.
• If Inverter noise is affecting peripheral devices: Lower the carrier frequency.
• If leakage current from the Inverter is large: Lower the carrier frequency.
• If metallic noise from the motor is large: Increase the carrier frequency.
C6-01 Set Value 0 (Heavy Duty) 1 (Normal Duty 1) 2 (Normal Duty 2)
Inverter Current Overload Capa-
bility
150% of the Heavy Duty rated current
for 1 min.
* 1
* 1. The rated current depends on on the Heavy/Normal Duty selection. (See page -2, Specifications by Model for details)
120% of the Normal Duty 1 rated cur-
rent for 1 min.
*1
120% of the Normal Duty 2 rated cur-
rent for 1 min.
*1
C6-02 (Carrier Frequency Selec-
tion)
* 2
* 2. The factory setting and the maximum carrier frequency depend on the inverter capacity. (See page -2, Specifications by Model for details)
0: Low carrier low noise
1: Carrier 2 kHz
2: Carrier 5 kHz
* 3
3: Carrier 8.0 kHz
*3
4: Carrier 10.0 kHz
*3
5: Carrier 12.5 kHz
*3
6: Carrier 15 kHz
*3
F: User-set
*3
* 3. If the carrier frequency in Heavy Duty mode is set to a higher value than 2.5 kHz, a current derating must be considered.
0: Low carrier low noise
1: Carrier 2 kHz
2: Carrier 5 kHz
*2
3: Carrier 8.0 kHz
*2
4: Carrier 10.0 kHz
*2
5: Carrier 12.5 kHz
*2
6: Carrier 15 kHz
*2
F: User-set
*2
E1-04 and E3-02 (Max. Output
Frequency)
150 Hz 400 Hz
L3-02 (Stall Prevention Level
During Acceleration)
150% 120%
L3-06 (Stall prevention level
during run)
150% 120%
L8-15 (OL2 Characteristics at
low Speed)
0 (Disabled) 1 (Enabled)
Wiring Length 50 m or less 100 m or less Over 100 m
C6-02 (carrier frequency) setting 0 to 6 (15 kHz) 0 to 4 (10 kHz) 0 to 2 (5 kHz)

Omron VARISPEED F7 Specifications

General

Brand	Omron
Model	VARISPEED F7
Category	Inverter
Language	English