Continuing Operation At Constant Speed When Frequency Reference Is Lost - Omron VARISPEED G7 Instruction Manual

Continuing Operation at Constant Speed When Frequency Reference Is
Lost
The frequency reference loss detection function continues operation using 80% speed of the frequency refer-
ence before loss when the frequency reference using an analog input is reduced 90% or more in 400 ms.
When the error signal during frequency reference loss is output externally, set H2-01 to H2-05 (multi-function
contact output terminal M1-M2, M3-M4, M5-M6, P3-C3, and P4-C4 function selection) to C (frequency ref-
erence lost).
Related Constants
Con-
stant
Number
L4-05
-62
6
Name
Description
Display
Operation 0: Stop (Operation follows the
when fre- frequency reference.)
quency refer- 1: Operation at 80% speed
ence is continues. (At 80% of speed
missing before the frequency reference
was lost)
Frequency reference is lost: Fre-
Ref Loss Sel
quency reference dropped over 90%
in 400 ms.
Change
Setting Factory during
Range Setting Opera-
V/f
tion
0 or 1 0 No A
Control Methods
Open Open
V/f Flux
Loop Loop
with Vec-
Vector Vector
PG tor
1 2
A A A A