SET-3A Omron, SET-3A Datasheet - Page 7

• Manufacturer Part Number: SET-3A
• Description: CONVERTER CURRENT 1-80A FOR SAO
• Manufacturer: Omron
• Series: SAOr

Specifications of SET-3A

• Accessory Type: Current Converter
• For Use With/related Products: SAO Series
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SET3A

■ Operating and Setting Procedures
Make the settings for the SAO Current Sensor and the SET-3@ Current Converter according to the current of the load to be used.
Steady Current
Note: The current setting range is determined by the number of times the conductors to the SET-3@ are passed through and by the setting tap of
Determining Current Sensor Settings
1. Determining the Current Scale Multiplying
Determine a current scale multiplying factor that matches the steady
current obtained from the table, and attach that decal to the Current
Sensor. For example, when the current setting range is 2 to 5 A, the
label number is 0.5.
2. Setting the Operating Current
Determine the operating current setting from the required steady
current and the label number (i.e., multiplying factor) and make the
setting using the current setting knob. The following table shows the
relation between scale values and actual operating current values.
3. LED Operation Indicator
The indicator is continuously lit when the Sensor operates due to
overload.
4. Setting the Operating Time
• Set the time setting knob to
• The scale value can be
Factor
× 0.25
× 0.5
× 1
× 2
× 4
× 8
× 16
Note
After detection, the operation indicator automatically turns OFF
when there is no longer an overload.
Setting
the required time. The
operating time is equal to
the scale value times scale
multiplying factor.
selected using the
changeover switch. For the
SAO-R, this is the operating
time in the event of a 600%
overcurrent. For the SAO-Q,
this is the operating time in
startup mode. There is no
operating time SV for the
SAO-S.
(current setting
Rated current
Factor
range) (A)
16 to 40
32 to 80
64 to 160
the SET-3@. The current scale values are always 4 to 10 A. Therefore, attach the included current scale multiplying factor label to the SAO
that matches the current range.
1 to 2.5
2 to 5
4 to 10
8 to 20
SAO-R, -Q, -S
16
32
64
4
1
2
4
8
10
20
40
80
1.25
2.5
5
5
multiplying factor
Current scale
label number
16
The figures are steady current values. (Unit: A)
0.25
0.5
1
2
4
8
12
24
48
96
6
1.5
3
6
Time scale value
10
1
2
3
4
5
6
7
8
9
112
Scale multiplying
14
28
56
1.75
3.5
7
7
conductor passings
128
16
32
64
8
Number of
2
4
8
factor
144
8
4
2
1
1
1
1
18
36
72
2.25
4.5
9
9
10 s
× 1
1 s
2 s
3 s
4 s
5 s
6 s
7 s
8 s
9 s
Current converter
160.5
12 s
16 s
20 s
24 s
28 s
32 s
36 s
40 s
10
20
40
80
10
× 4
4 s
8 s
2.5
5
Setting tap
Fixed
20
20
20
20
40
80
5. Test Button
Pressing the button momentarily operates the output relay. The LED
indicator, however, does not light during this operation.
Determining Current Converter
Settings
1. Determining the Number of Passes for
• Determine the number of primary conductor passes and the setting
• Pass the three wires through the holes from the same direction. It
2. Setting the Tap
Use a screwdriver to screw the included setting screw into the
required tap hole. After the setting has been made, be sure to mount
the cover as it was before.
The SET-3B does not have tap settings.
tap according to the table. For example, for a current setting range
of 2 to 5 A, the number of passes is four and the setting tap is 20.
doesn’t matter which wires go through which holes.
Primary Conductors
SET-3A
SET-3B
Model
(The conductors pass
through the holes once.)
OMRON Corporation
SET-3A
CURRENT
CONVERTER
No.
DATE
2 5 0 5 3
1 9 8 3
One conductor pass
MADE IN JAPAN
20
40
60
(The conductors pass
through the holes four times.)
Four conductor passes
(1)
(2)
SAO
7