Omron SYSDRIVE 3G3RV, User Manual

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6
-66
Application Precautions
• Frequency
outputs using UP/DOWN commands are limited by the frequency reference upper and lower
limits
set in parameters d2-01 to d2-03. Here, frequency references from analog frequency reference termi-
nal
A1 becomes the frequency reference lower limit. If using a combination of the frequency reference
from
terminal A1 and the frequency reference lower limit set in either parameter d2-02 or d2-03, the larger
lower
limit will become the frequency reference lower limit.
•
If
inputting the run command when using UP/DOWN commands, the output frequency accelerates to the
frequency
reference lower limit.
• When
using UP/DOWN commands, multi-step operations are disabled.
•
When
d4-01 (Frequency Reference Hold Function Selection) is set to 1, the frequency reference held using
the
UP/DOWN functions is stored even after the power supply is turned OFF. When the power supply is
turned
ON and the run command is input, the motor accelerates to the frequency reference that has been
stored.
To reset (i.e., to 0 Hz) the stored frequency reference, turn ON the UP or DOWN command while
the
run command is ON.
n
Connection Example and Time Chart
The
time chart and settings example when the UP command is allocated to the multi-function contact input
terminal
S3, and the DOWN command is allocated to terminal S4, are shown below.
Fig 6.50 Connection Example when UP/DOWN Commands Are Allocated
Parameter Name Set Value
H1-01 Multi-function
input (terminal S3)
10
H1-02 Multi-function
input (terminal S4)
11
Inverter
0 to 10 V analog
signal
Forward
operation/Stop
Reverse
operation/Stop
Up command
Down command
Sequence
common
Frequency
reference lower limit