Omron SYSDRIVE 3G3MV A2002, User Manual

Page: 192 / 348

6-50
·
The following ON/OFF combinations of UP and DOWN commands are possible.
Command Acceleration Deceleration Hold Hold
S6 (UP command) ON OFF OFF ON
S7 (DOWN command) OFF ON OFF ON
·
With the UP/DOWN function used, the output frequency has the following restrictions
for upper and lower limits.
Upper limit: The maximum frequency in n011 or the frequency reference upper limit
in n033, whichever is smaller.
Lower limit: The minimum output frequency in n016 or frequency reference lower
limit in n034, whichever is smaller.
·
When the RUN command for forward or reverse rotation is input, the Inverter will start
operating at the lower limit regardless of whether the UP/DOWN command is input or
not.
·
When the UP/DOWN function and inching frequency command are both assigned to
multi-function inputs, an inching frequency command input will have the highest prior-
ity.
·
If n100 for UP/DOWN frequency storage is set to 1, the output frequency held by the
UP/DOWN function for 5 s or more will be stored in the memory. The output frequency
will be held by the UP/DOWN function when both UP and DOWN commands are ON or
OFF together.
6-10-10
Input Open-phase Detection (n166, n167)
·
The input open-phase detection function is provided for 5.5- and 7.5-kW Inverters only.
·
This function detects the occurrence of an input power supply open phase. The open
phase is detected by means of fluctuations in the main circuit DC voltage, enabling
detection of power supply voltage fluctuations and imbalances, decreasing values due
to ageing of the main circuit capacitor, and so on, in the same way.
·
If the fluctuations in the main circuit DC voltage exceed the input open-phase detection
level (n166), and persist at this level for longer than the input open-phase detection
time (n167), a main-circuit voltage fault (PF) will be detected.
n166 Input Open-phase Detection
Level
Register 01A6
Hex
Changes during
operation
No
Setting
range
0 to 100 Unit of
setting
1 % Default setting 0
n167 Input Open-phase Detection
Time
Register 01A7
Hex
Changes during
operation
No
Setting
range
0 to 255 Unit of
setting
1 s Default setting 0
Advanced Operation Chapter 6