SET-3A

Manufacturer Part NumberSET-3A
DescriptionCONVERTER CURRENT 1-80A FOR SAO
ManufacturerOmron
SeriesSAO
SET-3A datasheets
 

Specifications of SET-3A

Accessory TypeCurrent ConverterFor Use With/related ProductsSAO Series
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther namesSET3A
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Current Sensor
SAO
Solid-state, Plug-in Current Sensor
• Applicable to motor overcurrent protection and 3-phase AC cur-
rent detection.
• Inverse-type, start-up lock type, and instantaneous type over-
current sensors available.
• Instantaneous type under current sensor available.
• Plug-in design simplifies installation, removal, and wiring.
• DIN sized (48 mm x 96 mm)
The SAO cannot be used in circuits with
waveform distortion, inverter circuits, or
with capacitor loads.
Model Number Structure
■ Model Number Legend
SAO-@@@@
1
2 3 4 5
1. Basic model name
SAO: Current Sensor
2. Operating time characteristics
R:
Inverse type: inverse time both at starting and during oper-
ation
Q:
Instantaneous type with start-up lock
S:
Regular instantaneous type
3. Detection function
U:
Undercurrent detection
None: Overcurrent detection
Ordering Information
Terminal/
Control voltage
mounting
Inverse type
Plug-in/DIN
100/110/120 VAC
SAO-R1N
rail via socket
200/220/240 VAC
SAO-R2N
24 VDC
SAO-R5N
48 VDC
SAO-R6N
100/110 VDC
SAO-R7N
* Fixed time-limit at start-up, instantaneous thereafter.
■ Accessories (Order Separately)
Current Converters
Model
Current range
SET-3A
1 to 80 A
SET-3B
64 to 160 A
4. Control voltage
1:
100/110/120 VAC
2:
200/220/240 VAC
5:
24 VDC
6:
48 VDC
7:
100/110 VDC
5. Product history
N:
New version
Overcurrent detection
Instantaneous type
W/start-up lock*
W/o start-up lock
SAO-Q1N
SAO-S1N
SAO-Q2N
SAO-S2N
SAO-Q5N
SAO-S5N
SAO-Q6N
SAO-S6N
SAO-Q7N
SAO-S7N
DIN rail socket
8PFA1
CSM_SAO_DS_E_2_1
Under current
detection
Instantaneous type
SAO-SU1N
SAO-SU2N
SAO-SU5N
SAO-SU6N
SAO-SU7N
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SET-3A Summary of contents

  • Page 1

    ... VAC SAO-R2N 24 VDC SAO-R5N 48 VDC SAO-R6N 100/110 VDC SAO-R7N * Fixed time-limit at start-up, instantaneous thereafter. ■ Accessories (Order Separately) Current Converters Model Current range SET- SET- 160 A 4. Control voltage 1: 100/110/120 VAC 2: 200/220/240 VAC 5: 24 VDC 6: 48 VDC 7: 100/110 VDC 5 ...

  • Page 2

    ... Specifications ■ Ratings Motor circuit Voltage:500 VAC max. 3-phase (primary voltage at SET Current Converter) Current 160 A 3-phase (primary current at SET Current Converter) Power supply circuit Voltage: 100/110/120 VAC, 200/220/240 VAC, 24, 48 VDC, or 100/110 VDC (leveled DC) Voltage fluctuation: Frequency: 50/60 Hz ±5% Current SV range See table of Current Converter ...

  • Page 3

    ... Malfunction: 98 m/s Destruction: 294 m/s Test button operation Operated quickly (without lighting the LED) Ambient temperature Operating: Storage: Ambient humidity Operating: 35% to 85% Altitude 2,000 m max. Weight Approx. 170 g Engineering Data ■ Operating Time Characteristics SAO-R Time Changeover Setting Time scale value ...

  • Page 4

    ... The contact is NC (between terminals 4 and 5) when the motor is not started. 2. The contact is NO (between terminals 5 and 6) when the startup pushbutton is pressed and a current larger than the reset current flows. 3. The contact is NC (between terminals 4 and 5) when the motor current is less than the operating value (i ...

  • Page 5

    ... R S Alarm buzzer Electro- magnetic contactor Phase advancing capacitor SET-3 Current Converter M Motor Note: To prevent the buzzer sounding when power is turned ON, in- stall a timer so that the buzzer sounds only when the timer’s contacts are closed. SAO T Stop Alarm BZ buzzer Start 6 ...

  • Page 6

    ... Determine the current scale multiplying factor corresponding to the current SV range obtained from Table 1 and paste the current scale multiplying decal to the current sensor. For example, when the current setting range the decal no. is 0.5. Setting Operating Current Set the current setting knob to the required current value ...

  • Page 7

    ... SET-3A CURRENT CONVERTER No. DATE OMRON Corporation 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 × 1 × ...

  • Page 8

    ... SET-3A CURRENT 144 160 CONVERTER No. DATE OMRON Corporation 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. ...

  • Page 9

    ... Checking Operation The following circuit can be used to check SAO-@ and SET-3@ characteristics. 200 VAC, 3-phase, 50/ 100 V C ± X SET-3 Current Converter Control voltage Pushbutton switch 100 VAC X SAO 6 Current 7 Sensor 3φSD: Three-phase voltage regulator A: AC ammeter CC: Cycle counter X: Auxiliary relay (15 A) ...

  • Page 10

    ... Dimensions Note: All units are in millimeters unless otherwise indicated. SAO-R/SAO SAO-S/SAO- Current Converter SET-3A, SET-3B 26 112 78.5 9.5 44 100 78.5 9.5 100 Two, M3.5 Three, 20-dia. terminal screws through holes 33.5 33 SAO The Height of DIN Rail Mounting SAO 111 ...

  • Page 11

    ... Use a commercial frequency power supply only for the control power supply. The SET-3@ Current Converter is designed for use with a single SAO Current Sensor; do not connect two units to a single SET- figure 1 below (even if a diode is included in the circuit). If the current transformer has sufficient capacity, the circuit in figure 2 is acceptable ...

  • Page 12

    ... The following describes the single-phase operating procedure for the SAO. Models for single-phase circuits, however, are also available. Refer to SAO- Connection Procedure Run the primary wires through any two of the three holes on the SET- 3 the number of times specified for the SET-3@. SAO SET-3@ ...

  • Page 13

    ... Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments. WARRANTY OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified) from date of sale by OMRON. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS ...