Omron J7 series, User Manual

Page: 163 / 177

149
List of Parameters
Chapter 10
n33
(0121) Motor
protection
character-
istics Used to set the motor overload detection
(OL1) for the electronic thermal
characteristics of the motor.
0: Protection characteristics for general-
purpose induction motors
1: Protection characteristics for inverter-
dedicated motors
2: No protection
Note If a single Inverter is connected to
more than one motor, set the para-
meter to 2 for no protection. The
parameter is also disabled by setting
n32 for rated motor to 0.0.
0 to 2 1 0 No 6-14
n34
(0122) Motor
protective time
setting Used to set the electric thermal
characteristics of the motor to be connected
in 1-minute increments.
Note The default setting does not require
any changes in normal operation.
Note To set the parameter according to the
characteristics of the motor, check
with the motor manufacturer the
thermal time constant and set the
parameter with some margin. In other
words, set the value slightly shorter
than the thermal time constant.
Note To detect motor overloading quicker,
reduce the set value, provided that it
does not cause any application
problems.
1 to 60 1 min 8 No 6-14
n35
(0123) Cooling fan
operation
function Used to operate the Cooling Fan of the
Inverter while the Inverter is turned on or
only while the Inverter is in operation.
0: Rotates only while RUN command is input
and for 1 minute after Inverter stops
operating
1: Rotates while Inverter is turned on
Note This parameter is available only if the
Inverter incorporates a Cooling Fan.
Note If the operation frequency of the
Inverter is low, the life of the fan can
be prolonged by setting the parameter
to 0.
0, 1 1 0 No. 6-14
n36
(0124) Multi-function
input 1 (Input
terminal S2) Used to select the function of multi-function
input terminals S2 through S5. 2 to 8,
10 to
22 1 2 No 5-17
Set
value
Function Description
n37
(0125) Multi-function
input 2 (input
terminal S3) 0 Forward/
Reverse
rotation
command 3-wire sequence
(to be set in n37 only)
By setting n37 to 0,
the set value in n36 is
ignored and the
following setting are
forcibly made.
S1: RUN input
(RUN when ON)
S2: STOP input
(STOP whenn OFF)
S3: Forward/Reverse
rotation command
(OFF: Forward;
ON: Reverse)
0, 2 to
8, 10 to
22 1 5 No 5-17
n38
(0126) Multi-function
input 3 (Input
terminal S4) 2 to 8,
10 to
22 1 3 No 5-17
Para-
meter No.
(Register
No. (Hex))
Name Description Setting
range
Unit of
setting
Default
setting
Changes
during
operation
Refer-
ence
page