Precautions On Constant Setting - ACP Speecon 7200M3 Manual

To display constant Pn-
Constant Pn- is displayed

2.1.3 Precautions on Constant Setting

(1) Perform constant setting securely.
Improper setting may cause functions not to operate or protective function to operate.
(2) Record the constants of which setting has been changed.
Recording the final setting of constants is effective for maintenance or early troubleshooting. Refer to
the Par. 2.6 "FUNCTION/ CONSTANT LIST" which has a column for entering setting of constants on
page 58.
(3) Change control constants in increments
Do not change the motor control constant setting such as V/f maximum output frequency, etc. rapidly.
Change it in increments , checking the motor current or load machine status. Changing setting very rapidly
may affect the inverter or machine.
(4) In the following cases are setting error, the set value blinks for 3 seconds and the data before changing
are returned.
(a) When a value exceeding the setting range is set.
(b) If the following condition is not satisfied in the multifunction input selection constant setting:
Multifunction input selection 1 (Pn-32)<Multifunction input selection 2(Pn-33).
(c) If the following conditions are not satisfied in the V/f constant setting:
Pn-02>=Pn-04>=Pn-05>=Pn-07
For details, refer to "V/f CHARACTERISTIC SETTING "on page 69.
(d) If the following condition is not satisfied in the frequency reference constant setting:
Pn-13~17<=Pn-02×Pn-24
For details, refer to "V/f CHARACTERISTIC SETTING" on page 69 and "OUTPUT FREQUENCY
LIMIT" on page 79.
(e) If the following condition is not satisfied in the frequency reference upper/lower limit value setting:
Pn-25<=Pn-24
DSPL
- - 52
005.0
Pn- 09